ESP32-C3-DevKitC-02

The ESP32-C3-DevKitC-02 is an entry-level development board.

SoC: ESP32-C3-WROOM-02
RGB LED
micro USB

pinout

left side - J1

1 GND
2 3V3
3 3V3
4 RST
5 GND
6 GPIO4
7 GPIO5
8 GPIO6
9 GPIO7
10 GND
11 GPIO8, RGB_LED
12 GPIO9
13 5V
14 5V
15 GND

right side - J3

1 GND
2 GPIO0
3 GPIO1
4 GPIO2
5 GPIO3
6 GND
7 GPIO10
8 GND
9 GPIO20 U0RXD
10 GPIO21 U0TXD
11 GND * 12 GPIO18 USB_D-
13 GPIO19 USB_D+ * 14 GND
15 GND

back to microcontrollers page.

Links

Espressif Systems ESP32-C3-DevKitC-02 User Guide,

crates.io mandown lib.rs mandown,

local links

c1, c2, vm4, sb,

History

2025-01-28: testing the wifi_dhcp example from the esp-wifi crate

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02/esp32c3_wifi_test $ env SSID=mySSID PASSWORD=myPASSWD cargo run --example wifi_dhcp
   Compiling esp-hal v0.23.1
   Compiling esp-wifi v0.12.0
   Compiling esp32c3_wifi_test v0.1.0 (/zs/tingo/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02/esp32c3_wifi_test)
    Finished `dev` profile [optimized + debuginfo] target(s) in 5.30s
     Running `espflash flash --list-all-ports --monitor target/riscv32imc-unknown-none-elf/debug/examples/wifi_dhcp`
[2025-01-28T18:40:22Z INFO ] Detected 2 serial ports
[2025-01-28T18:40:22Z INFO ] Ports which match a known common dev board are highlighted
[2025-01-28T18:40:22Z INFO ] Please select a port
[2025-01-28T18:40:25Z INFO ] Serial port: '/dev/cuaU0'
[2025-01-28T18:40:25Z INFO ] Connecting...
[2025-01-28T18:40:26Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8
App/part. size:    678,032/4,128,768 bytes, 16.42%
[00:00:01] [========================================]      13/13      0x0
[2025-01-28T18:40:29Z INFO ] Segment at address '0x8000' has not changed, skipping write
[00:00:38] [========================================]     377/377     0x10000
[2025-01-28T18:41:09Z INFO ] Flashing has completed!
Commands:
    CTRL+R    Reset chip
    CTRL+C    Exit

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:2
load:0x3fcd5820,len:0x1714
load:0x403cc710,len:0x968
load:0x403ce710,len:0x2f9c
entry 0x403cc710
I (32) boot: ESP-IDF v5.1.2-342-gbcf1645e44 2nd stage bootloader
I (32) boot: compile time Dec 12 2023 10:50:58
I (32) boot: chip revision: v0.3
I (36) boot.esp32c3: SPI Speed      : 40MHz
I (41) boot.esp32c3: SPI Mode       : DIO
I (46) boot.esp32c3: SPI Flash Size : 4MB
I (50) boot: Enabling RNG early entropy source...
I (56) boot: Partition Table:
I (59) boot: ## Label            Usage          Type ST Offset   Length
I (67) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (74) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (81) boot:  2 factory          factory app      00 00 00010000 003f0000
I (89) boot: End of partition table
I (93) esp_image: segment 0: paddr=00010020 vaddr=3c090020 size=1dcbch (122044) map
I (129) esp_image: segment 1: paddr=0002dce4 vaddr=3fc87850 size=01268h (  4712) load
I (130) esp_image: segment 2: paddr=0002ef54 vaddr=3fc9dd28 size=001ech (   492) load
I (135) esp_image: segment 3: paddr=0002f148 vaddr=40380000 size=00ed0h (  3792) load
I (144) esp_image: segment 4: paddr=00030020 vaddr=42000020 size=7eebch (519868) map
I (267) esp_image: segment 5: paddr=000aeee4 vaddr=40380ed0 size=0697ch ( 27004) load
I (276) boot: Loaded app from partition at offset 0x10000
I (276) boot: Disabling RNG early entropy source...
INFO - esp-wifi configuration EspWifiConfig { rx_queue_size: 5, tx_queue_size: 3, static_rx_buf_num: 10, dynamic_rx_buf_num: 32, static_tx_buf_num: 0, dynamic_tx_buf_num: 32,
    ampdu_rx_enable: true, ampdu_tx_enable: true, amsdu_tx_enable: false, rx_ba_win: 6, max_burst_size: 1, country_code: "CN", country_code_operating_class: 0, mtu: 1492, tick_rate_hz: 100,
    listen_interval: 3, beacon_timeout: 6, ap_beacon_timeout: 300, failure_retry_cnt: 1, scan_method: 0 }
wifi_set_configuration returned Ok(())
is wifi started: Ok(true)
Start Wifi Scan
AccessPointInfo { ssid: "kg5", bssid: [224, 203, 78, 134, 129, 11], channel: 7, secondary_channel: Below, signal_strength: -56, protocols: EnumSet(), auth_method: Some(WPA2Personal) }
AccessPointInfo { ssid: "Home_Net-004159", bssid: [120, 197, 125, 254, 199, 131], channel: 11, secondary_channel: None, signal_strength: -63, protocols: EnumSet(), auth_method: Some(WPA2Personal) }
AccessPointInfo { ssid: "Home_Net-004422", bssid: [120, 197, 125, 254, 202, 152], channel: 1, secondary_channel: None, signal_strength: -67, protocols: EnumSet(), auth_method: Some(WPA2Personal) }
AccessPointInfo { ssid: "AirTies_Air4920_73VK 2.4ghz", bssid: [244, 23, 184, 53, 231, 250], channel: 11, secondary_channel: None, signal_strength: -70, protocols: EnumSet(), auth_method: Some(WPA2Personal) }
AccessPointInfo { ssid: "Familiestue.b,", bssid: [250, 143, 202, 56, 34, 8], channel: 6, secondary_channel: None, signal_strength: -73, protocols: EnumSet(), auth_method: Some(None) }
AccessPointInfo { ssid: "Home_Net-003965", bssid: [120, 197, 125, 254, 197, 61], channel: 11, secondary_channel: None, signal_strength: -74, protocols: EnumSet(), auth_method: Some(WPA2Personal) }
AccessPointInfo { ssid: "Pinell 10130:58:90:ec:b2:36", bssid: [48, 88, 144, 236, 178, 54], channel: 1, secondary_channel: None, signal_strength: -76, protocols: EnumSet(), auth_method: Some(None) }
Ok(EnumSet(Client))
wifi_connect Ok(())
Wait to get connected
Ok(true)
Wait to get an ip address
got ip Ok(IpInfo { ip: 10.1.161.29, subnet: Subnet { gateway: 10.1.10.1, mask: Mask(16) }, dns: Some(10.1.10.1), secondary_dns: None })
Start busy loop on main
Making HTTP request
HTTP/1.0 200 OK
X-Cloud-Trace-Context: 405abdc206c045df94792db4bac25224
Server: Google Frontend
Content-Length: 335
Date: Tue, 28 Jan 2025 18:38:02 GMT
Expires: Tue, 28 Jan 2025 18:48:02 GMT
Cache-Control: public, max-age=600
Age: 202
ETag: "uJJDjQ"
Content-Type: text/html

<!DOCTYPE html>
<html>
<head>
    <title>Nothing here</title>
</head>
<body>
<pre>
    __________________________
    < Hello fellow Rustaceans! >
     --------------------------
            \
             \
                _~^~^~_
            \) /  o o  \ (/
              '_   -   _'
              / '-----' \
</pre>
</body>
</html>

2025-01-26: try the hello_rgb example from the esp-hal-smartled crate:

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02/test_project $ cargo run --example hello_rgb --release
    Finished `release` profile [optimized + debuginfo] target(s) in 0.03s
     Running `espflash flash --monitor target/riscv32imc-unknown-none-elf/release/examples/hello_rgb`
[2025-01-26T18:43:29Z INFO ] 🚀 A new version of espflash is available: v3.3.0
[2025-01-26T18:43:29Z INFO ] Detected 2 serial ports
[2025-01-26T18:43:29Z INFO ] Ports which match a known common dev board are highlighted
[2025-01-26T18:43:29Z INFO ] Please select a port
[2025-01-26T18:43:31Z INFO ] Serial port: '/dev/cuaU0'
[2025-01-26T18:43:31Z INFO ] Connecting...
[2025-01-26T18:43:33Z INFO ] Unable to connect, retrying with extra delay...
[2025-01-26T18:43:33Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8
App/part. size:    78,768/4,128,768 bytes, 1.91%
[00:00:01] [========================================]      13/13      0x0
[00:00:00] [========================================]       1/1       0x8000
[00:00:01] [========================================]      14/14      0x10000
[2025-01-26T18:43:37Z INFO ] Flashing has completed!
Commands:
    CTRL+R    Reset chip
    CTRL+C    Exit

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:2
load:0x3fcd5820,len:0x171c
0x3fcd5820 - _stack_start
    at ??:??
load:0x403cc710,len:0x968
0x403cc710 - $d
    at ??:??
load:0x403ce710,len:0x2f68
0x403ce710 - $d
    at ??:??
SHA-256 comparison failed:
Calculated: 1d06b938c0222bf626e0bdf46178b1b37ab24d03f0360fc8fcf7153c2571deaf
Expected: 68d7bdf643ba446b8ed7ae8423241d442fd052b2bc77091100ba06fd65dcf8d5
Attempting to boot anyway...
entry 0x403cc710
0x403cc710 - $d
    at ??:??
I (50) boot: ESP-IDF v5.1-beta1-378-gea5e0ff298-dirt 2nd stage bootloader
I (50) boot: compile time Jun  7 2023 07:59:10
I (51) boot: chip revision: v0.3
I (55) boot.esp32c3: SPI Speed      : 40MHz
I (60) boot.esp32c3: SPI Mode       : DIO
I (65) boot.esp32c3: SPI Flash Size : 4MB
I (69) boot: Enabling RNG early entropy source...
I (75) boot: Partition Table:
I (78) boot: ## Label            Usage          Type ST Offset   Length
I (86) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (93) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (101) boot:  2 factory          factory app      00 00 00010000 003f0000
I (108) boot: End of partition table
I (112) esp_image: segment 0: paddr=00010020 vaddr=3c010020 size=01290h (  4752) map
I (122) esp_image: segment 1: paddr=000112b8 vaddr=3fc80888 size=003c0h (   960) load
I (130) esp_image: segment 2: paddr=00011680 vaddr=40380000 size=00888h (  2184) load
I (138) esp_image: segment 3: paddr=00011f10 vaddr=00000000 size=0e108h ( 57608) 
I (159) esp_image: segment 4: paddr=00020020 vaddr=42000020 size=03360h ( 13152) map
I (162) boot: Loaded app from partition at offset 0x10000
I (162) boot: Disabling RNG early entropy source...

yes, this too works.

2025-01-26: c2 - try the example

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02/test_project $ cargo run
    Finished `dev` profile [optimized + debuginfo] target(s) in 0.03s
     Running `espflash flash --monitor target/riscv32imc-unknown-none-elf/debug/test_project`
[2025-01-26T18:07:24Z INFO ] 🚀 A new version of espflash is available: v3.3.0
[2025-01-26T18:07:24Z INFO ] Detected 2 serial ports
[2025-01-26T18:07:24Z INFO ] Ports which match a known common dev board are highlighted
[2025-01-26T18:07:24Z INFO ] Please select a port
[2025-01-26T18:07:26Z INFO ] Serial port: '/dev/cuaU0'
[2025-01-26T18:07:26Z INFO ] Connecting...
[2025-01-26T18:07:28Z INFO ] Unable to connect, retrying with extra delay...
[2025-01-26T18:07:28Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8
App/part. size:    84,176/4,128,768 bytes, 2.04%
[00:00:01] [========================================]      13/13      0x0
[00:00:00] [========================================]       1/1       0x8000
[00:00:02] [========================================]      17/17      0x10000
[2025-01-26T18:07:33Z INFO ] Flashing has completed!
Commands:
    CTRL+R    Reset chip
    CTRL+C    Exit

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:2
load:0x3fcd5820,len:0x171c
0x3fcd5820 - _stack_start
    at ??:??
load:0x403cc710,len:0x968
0x403cc710 - __EXTERNAL_INTERRUPTS
    at ??:??
load:0x403ce710,len:0x2f68
0x403ce710 - __EXTERNAL_INTERRUPTS
    at ??:??
SHA-256 comparison failed:
Calculated: 1d06b938c0222bf626e0bdf46178b1b37ab24d03f0360fc8fcf7153c2571deaf
Expected: 68d7bdf643ba446b8ed7ae8423241d442fd052b2bc77091100ba06fd65dcf8d5
Attempting to boot anyway...
entry 0x403cc710
0x403cc710 - __EXTERNAL_INTERRUPTS
    at ??:??
I (50) boot: ESP-IDF v5.1-beta1-378-gea5e0ff298-dirt 2nd stage bootloader
I (50) boot: compile time Jun  7 2023 07:59:10
I (51) boot: chip revision: v0.3
I (55) boot.esp32c3: SPI Speed      : 40MHz
I (60) boot.esp32c3: SPI Mode       : DIO
I (65) boot.esp32c3: SPI Flash Size : 4MB
I (69) boot: Enabling RNG early entropy source...
I (75) boot: Partition Table:
I (78) boot: ## Label            Usage          Type ST Offset   Length
I (86) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (93) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (101) boot:  2 factory          factory app      00 00 00010000 003f0000
I (108) boot: End of partition table
I (112) esp_image: segment 0: paddr=00010020 vaddr=3c010020 size=0205ch (  8284) map
I (123) esp_image: segment 1: paddr=00012084 vaddr=3fc80904 size=00110h (   272) load
I (129) esp_image: segment 2: paddr=0001219c vaddr=40380000 size=00904h (  2308) load
I (138) esp_image: segment 3: paddr=00012aa8 vaddr=00000000 size=0d570h ( 54640) 
I (158) esp_image: segment 4: paddr=00020020 vaddr=42000020 size=0488ch ( 18572) map
I (162) boot: Loaded app from partition at offset 0x10000
I (163) boot: Disabling RNG early entropy source...
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!
INFO - Hello world!

yes, it works.

2025-01-26: c2 - esp-generate options

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ esp-generate --help
Template generation tool to create no_std applications targeting Espressif's chips

Usage: esp-generate [OPTIONS] --chip <CHIP> <NAME>

Arguments:
  <NAME>
          Name of the project to generate

Options:
  -c, --chip <CHIP>
          Chip to target

          Possible values:
          - esp32:   ESP32
          - esp32c2: ESP32-C2, ESP8684
          - esp32c3: ESP32-C3, ESP8685
          - esp32c6: ESP32-C6
          - esp32h2: ESP32-H2
          - esp32s2: ESP32-S2
          - esp32s3: ESP32-S3

      --headless
          Run in headless mode (i.e. do not use the TUI)

  -o, --option <OPTION>
          Generation options: alloc, wifi, ble, embassy, probe-rs, wokwi, dev-container, ci, helix, vscode - For more information regarding the different options check the esp-generate README.md (https://github.com/esp-rs/esp-generate/blob/main/README.md).

  -O, --output-path <OUTPUT_PATH>
          Directory in which to generate the project

  -h, --help
          Print help (see a summary with '-h')

  -V, --version
          Print version

try it

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ esp-generate -c esp32c3 test_project
tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ l
./            ../           test_project/

(I just pressed 's' to accept default options) it seems to have worked.

2025-01-26: c2 - cargo espflash - check with updated version

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash board-info -p /dev/cuaU0
[2025-01-26T17:52:02Z INFO ] Serial port: '/dev/cuaU0'
[2025-01-26T17:52:02Z INFO ] Connecting...
[2025-01-26T17:52:03Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

try the other way

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash board-info 
Error: espflash::no_serial

  × No serial ports could be detected
  help: Make sure you have connected a device to the host system. If the device is connected but not listed, try using the `--list-all-
        ports` flag.

good to know.

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash board-info --list-all-ports
[2025-01-26T17:54:16Z INFO ] Detected 2 serial ports
[2025-01-26T17:54:16Z INFO ] Ports which match a known common dev board are highlighted
[2025-01-26T17:54:16Z INFO ] Please select a port
[2025-01-26T17:54:19Z INFO ] Serial port: '/dev/cuaU0'
[2025-01-26T17:54:19Z INFO ] Connecting...
[2025-01-26T17:54:20Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

2025-01-26: c2 - cargo - can I install to get the newest version?

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo install cargo-espflash
    Updating crates.io index
  Downloaded cargo-espflash v3.3.0
  Downloaded 1 crate (48.7 KB) in 0.11s
  Installing cargo-espflash v3.3.0
    Updating crates.io index
     Locking 506 packages to latest compatible versions
[..]
   Compiling cargo-espflash v3.3.0
    Finished `release` profile [optimized] target(s) in 3m 09s
   Replacing /home/tingo/.cargo/bin/cargo-espflash
    Replaced package `cargo-espflash v2.1.0` with `cargo-espflash v3.3.0` (executable `cargo-espflash`)

2025-01-26: c2 - cargo - check for installed programs

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo install --list
aoc-cli v0.12.0:
    aoc
cargo-binutils v0.3.6:
    cargo-cov
    cargo-nm
    cargo-objcopy
    cargo-objdump
    cargo-profdata
    cargo-readobj
    cargo-size
    cargo-strip
    rust-ar
    rust-cov
    rust-ld
    rust-lld
    rust-nm
    rust-objcopy
    rust-objdump
    rust-profdata
    rust-readobj
    rust-size
    rust-strip
cargo-espflash v2.1.0:
    cargo-espflash
cargo-generate v0.19.0:
    cargo-generate
esp-generate v0.2.1:
    esp-generate
espflash v2.1.0:
    espflash
flip-link v0.1.7:
    flip-link
probe-rs v0.22.0:
    cargo-embed
    cargo-flash
    probe-rs
probe-run v0.3.10:
    probe-run
rustlings v5.3.0 (/zs/tingo/personal/projects/2022/rust/rustlings):
    rustlings
tenere v0.9.0:
    tenere

2025-01-26: c2 - espflash - check for board

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ espflash board-info -p /dev/cuaU0
[2025-01-26T17:40:44Z INFO ] 🚀 A new version of espflash is available: v3.3.0
[2025-01-26T17:40:44Z INFO ] Serial port: '/dev/cuaU0'
[2025-01-26T17:40:44Z INFO ] Connecting...
[2025-01-26T17:40:46Z INFO ] Unable to connect, retrying with extra delay...
[2025-01-26T17:40:46Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

2025-01-26: c2 - rustup show installed targets

tingo@kg-core2:~/personal/projects/2025/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ rustup target list --installed
riscv32imac-unknown-none-elf
riscv32imc-unknown-none-elf
thumbv6m-none-eabi
thumbv7m-none-eabi
thumbv8m.main-none-eabihf
x86_64-unknown-freebsd

good.

2024-12-14: sb - try cargo-espflash and espflash with environment varable for port

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ ESPFLASH_PORT="/dev/cuaU0" espflash board-info
Error: espflash::serial_not_found

  × The serial port '/dev/cuaU0' could not be found
  help: Make sure the correct device is connected to the host system

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ ESPFLASH_PORT="/dev/cuaU0" cargo espflash board-inf
o
Error: espflash::serial_not_found

  × The serial port '/dev/cuaU0' could not be found
  help: Make sure the correct device is connected to the host system

nope, that doesn't work either.

2024-12-14: sb - install cargo-espflash via cargo install cargo-espflashthen test it out

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash --version
cargo-espflash-espflash 3.2.0

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash board-info --port /dev/cuaU0
Error: espflash::serial_not_found

  × The serial port '/dev/cuaU0' could not be found
  help: Make sure the correct device is connected to the host system

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash board-info --port "/dev/cuaU0"
Error: espflash::serial_not_found

  × The serial port '/dev/cuaU0' could not be found
  help: Make sure the correct device is connected to the host system

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ cargo espflash board-info --list-all-ports
✔ Use serial port '/dev/cuaU0'? · yes
[2024-12-14T19:41:43Z INFO ] Serial port: '/dev/cuaU0'
[2024-12-14T19:41:43Z INFO ] Connecting...
[2024-12-14T19:41:44Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

2024-12-14: sb - pkg - install gmake

Dec 14 20:35:08 kg-starone pkg[5863]: gmake-4.4.1 installed

2024-12-14: sb - do cargo install espflash then

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ espflash --version
espflash 3.2.0

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ espflash board-info --list-all-ports
✔ Use serial port '/dev/cuaU0'? · yes
[2024-12-14T18:51:47Z INFO ] Serial port: '/dev/cuaU0'
[2024-12-14T18:51:47Z INFO ] Connecting...
[2024-12-14T18:51:48Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

but

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ espflash board-info --port /dev/cuaU0
Error: espflash::serial_not_found

  × The serial port '/dev/cuaU0' could not be found
  help: Make sure the correct device is connected to the host system

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ espflash board-info -p /dev/cuaU0
Error: espflash::serial_not_found

  × The serial port '/dev/cuaU0' could not be found
  help: Make sure the correct device is connected to the host system

strange.

2024-12-14: sb - connected the esp32-devkitc-02 to the machine, trying to see if probe-rs finds it

tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ probe-rs list
No debug probes were found.
tingo@kg-starone:~/personal/projects/2024/rust/embedded/riscv/ESP32-C3-DevKitC-02 $ sudo probe-rs list
No debug probes were found.

check if the port is there

root@kg-starone:~ # usbconfig -d ugen0.6
ugen0.6: <CP210x UART Bridge Silicon Labs> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)

and

root@kg-starone:~ # sysctl dev.uslcom.0.ttyname
dev.uslcom.0.ttyname: U0

permissions

root@kg-starone:~ # ls -l /dev/cuaU0 /dev/ttyU0
crw-rw----  1 uucp dialer 0x1aa Dec 14 19:32 /dev/cuaU0
crw-------  1 root wheel  0x1a7 Dec 14 19:32 /dev/ttyU0

and my user is a member of the dialer group.

2023-06-01: epaper (e-ink) display: 2.13 inch, white black red, 212x104, spi, waveshare epd 3 color equivalent. Looks like the epd-waveshare crate supports it: 2.13 inch B/W/R - resolution looks wrong 250 x 122. Other crates: ssd1675, ssd1681,

2023-05-30: c1 - try out the espflash command with the fix

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ git log
commit 902d5c63a6d06be2179711c4bcdc1550473c4662 (HEAD -> serial_bsd)
Author: Jesse Braham <jesse@beta7.io>
Date:   Tue May 30 07:05:37 2023 -0700

    Fix handling of serial ports on BSD systems

try it

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash board-info
[2023-05-30T20:16:56Z INFO ] Detected 2 serial ports
[2023-05-30T20:16:56Z INFO ] Ports which match a known common dev board are highlighted
[2023-05-30T20:16:56Z INFO ] Please select a port
[2023-05-30T20:17:00Z INFO ] Serial port: '/dev/cuaU0'
[2023-05-30T20:17:00Z INFO ] Connecting...
[2023-05-30T20:17:04Z INFO ] Unable to connect, retrying with extra delay...
[2023-05-30T20:17:05Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8
tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash board-info --port /dev/cuaU0
[2023-05-30T20:17:21Z INFO ] Serial port: '/dev/cuaU0'
[2023-05-30T20:17:21Z INFO ] Connecting...
[2023-05-30T20:17:25Z INFO ] Unable to connect, retrying with extra delay...
[2023-05-30T20:17:25Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

yes, it works.

2023-05-30: c1 - fetch the proposed fix for serial on BSD systems

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ git fetch origin pull/415/head:serial_bsd
remote: Enumerating objects: 41, done.
remote: Counting objects: 100% (41/41), done.
remote: Compressing objects: 100% (23/23), done.
remote: Total 41 (delta 18), reused 35 (delta 15), pack-reused 0
Unpacking objects: 100% (41/41), 33.10 KiB | 1.03 MiB/s, done.
From https://github.com/esp-rs/espflash
 * [new ref]         refs/pull/415/head -> serial_bsd

switch to new branch

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ git switch serial_bsd
Switched to branch 'serial_bsd'

build it

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ cargo build --release
  Downloaded ordered-float v2.10.0
  Downloaded pem-rfc7468 v0.7.0
  Downloaded crates-io v0.36.0
  Downloaded rfc6979 v0.4.0
  Downloaded serde-value v0.7.0
  Downloaded ruzstd v0.3.1
  Downloaded signature v2.1.0
  Downloaded twox-hash v1.6.3
  Downloaded const-oid v0.9.2
  Downloaded ct-codecs v1.1.1
  Downloaded http-auth v0.1.8
  Downloaded hkdf v0.12.3
  Downloaded pkcs8 v0.10.2
  Downloaded spki v0.7.1
  Downloaded fiat-crypto v0.1.20
  Downloaded ecdsa v0.16.6
  Downloaded git2-curl v0.17.0
  Downloaded addr2line v0.20.0
  Downloaded der v0.7.5
  Downloaded object v0.31.1
  Downloaded sec1 v0.7.1
  Downloaded elliptic-curve v0.13.4
  Downloaded ff v0.13.0
  Downloaded git2 v0.16.0
  Downloaded cargo v0.70.1
  Downloaded ed25519-compact v2.0.4
  Downloaded crypto-bigint v0.5.2
  Downloaded clap_complete v4.2.0
  Downloaded base16ct v0.2.0
  Downloaded pasetors v0.6.6
  Downloaded primeorder v0.13.1
  Downloaded p384 v0.13.0
  Downloaded orion v0.17.4
  Downloaded group v0.13.0
  Downloaded 34 crates (4.6 MB) in 0.86s (largest was `cargo` at 2.2 MB)
   Compiling libc v0.2.140
   Compiling syn v1.0.109
   Compiling generic-array v0.14.6
   Compiling subtle v2.4.1
   Compiling const-oid v0.9.2
   Compiling getrandom v0.2.8
   Compiling rand_core v0.6.4
   Compiling base64ct v1.6.0
   Compiling jobserver v0.1.26
   Compiling block-buffer v0.10.4
   Compiling crypto-common v0.1.6
   Compiling cc v1.0.79
   Compiling digest v0.10.6
   Compiling ahash v0.7.6
   Compiling hashbrown v0.12.3
   Compiling pem-rfc7468 v0.7.0
   Compiling openssl-src v111.25.3+1.1.1t
   Compiling der v0.7.5
   Compiling semver v1.0.17
   Compiling libz-sys v1.1.8
   Compiling openssl-sys v0.9.87
   Compiling ring v0.16.20
   Compiling libnghttp2-sys v0.1.7+1.45.0
   Compiling spki v0.7.1
   Compiling libssh2-sys v0.2.23
   Compiling curl-sys v0.4.61+curl-8.0.1
   Compiling hmac v0.12.1
   Compiling byteorder v1.4.3
   Compiling darling_core v0.14.4
   Compiling indexmap v1.9.3
   Compiling flate2 v1.0.25
   Compiling pkcs8 v0.10.2
   Compiling ff v0.13.0
   Compiling base16ct v0.2.0
   Compiling toml_datetime v0.6.1
   Compiling sec1 v0.7.1
   Compiling toml_edit v0.19.8
   Compiling group v0.13.0
   Compiling rustc_version v0.4.0
   Compiling unicode-linebreak v0.1.4
   Compiling darling_macro v0.14.4
   Compiling hkdf v0.12.3
   Compiling libgit2-sys v0.14.1+1.5.0
   Compiling crypto-bigint v0.5.2
   Compiling elliptic-curve v0.13.4
   Compiling darling v0.14.4
   Compiling proc-macro-crate v1.3.1
   Compiling heapless v0.7.16
   Compiling sha2 v0.10.6
   Compiling strum_macros v0.24.3
   Compiling twox-hash v1.6.3
   Compiling backtrace v0.3.67
   Compiling openssl v0.10.52
   Compiling ruzstd v0.3.1
   Compiling strum v0.24.1
   Compiling deku_derive v0.15.1
   Compiling addr2line v0.19.0
   Compiling hash32 v0.2.1
   Compiling rfc6979 v0.4.0
   Compiling openssl-macros v0.1.0
   Compiling signature v2.1.0
   Compiling filetime v0.2.20
   Compiling object v0.30.3
   Compiling binread_derive v2.1.0
   Compiling textwrap v0.15.2
   Compiling tar v0.4.38
   Compiling ecdsa v0.16.6
   Compiling deku v0.15.1
   Compiling toml v0.7.3
   Compiling object v0.31.1
   Compiling primeorder v0.13.1
   Compiling miette-derive v5.6.0
   Compiling bstr v1.4.0
   Compiling memmap2 v0.5.10
   Compiling time-core v0.1.0
   Compiling fiat-crypto v0.1.20
   Compiling esp-idf-part v0.2.0
   Compiling miette v5.6.0
   Compiling addr2line v0.20.0
   Compiling time v0.3.20
   Compiling globset v0.4.10
   Compiling orion v0.17.4
   Compiling p384 v0.13.0
   Compiling comfy-table v6.1.4
   Compiling cargo v0.70.1
   Compiling binread v2.2.0
   Compiling clap_complete v4.2.0
   Compiling ordered-float v2.10.0
   Compiling rand_xoshiro v0.6.0
   Compiling ed25519-compact v2.0.4
   Compiling ct-codecs v1.1.1
   Compiling either v1.8.1
   Compiling itertools v0.10.5
   Compiling pasetors v0.6.6
   Compiling ignore v0.4.20
   Compiling im-rc v15.1.0
   Compiling serde-value v0.7.0
   Compiling sha1 v0.10.5
   Compiling http-auth v0.1.8
   Compiling rustls v0.20.8
   Compiling webpki v0.22.0
   Compiling sct v0.7.0
   Compiling webpki-roots v0.22.6
   Compiling ureq v2.6.2
   Compiling update-informer v0.6.0
   Compiling espflash v2.0.0-rc.4 (/zs/tingo/personal/projects/2023/rust/embedded/esp/espflash/espflash)
   Compiling curl v0.4.44
   Compiling crates-io v0.36.0
   Compiling crypto-hash v0.3.4
   Compiling cargo-util v0.2.3
   Compiling git2 v0.16.0
   Compiling git2-curl v0.17.0
   Compiling cargo-espflash v2.0.0-rc.4 (/zs/tingo/personal/projects/2023/rust/embedded/esp/espflash/cargo-espflash)
    Finished release [optimized] target(s) in 6m 11s

2023-05-23: c1 - try out the newly built espflash

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash --version
espflash 2.0.0-rc.4
tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ 
tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash board-info
[2023-05-23T20:50:12Z INFO ] Detected 2 serial ports
[2023-05-23T20:50:12Z INFO ] Ports which match a known common dev board are highlighted
[2023-05-23T20:50:12Z INFO ] Please select a port
[2023-05-23T20:50:16Z INFO ] Serial port: '/dev/cuaU0'
[2023-05-23T20:50:16Z INFO ] Connecting...
[2023-05-23T20:50:16Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:50:19Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:50:19Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

try specifying the port

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash board-info --port /dev/cuaU0
[2023-05-23T20:51:06Z INFO ] Serial port: '/dev/cuau0'
[2023-05-23T20:51:06Z INFO ] Connecting...
[2023-05-23T20:51:06Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:51:07Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:51:07Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:51:09Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:51:10Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:51:10Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:51:11Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:51:12Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:51:13Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:51:14Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:51:15Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:51:16Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:51:17Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:51:18Z INFO ] Attempting Classic reset with default delay...
Error: espflash::connection_failed

  × Error while connecting to device
  ╰─▶ Failed to connect to the device
  help: Ensure that the device is connected and the reset and boot pins are not being held down

hmm, for some reason it selects the wrong port, try to fix

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash board-info --port '/dev/cuaU0'
[2023-05-23T20:52:24Z INFO ] Serial port: '/dev/cuau0'
[2023-05-23T20:52:24Z INFO ] Connecting...
[2023-05-23T20:52:24Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:52:24Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:52:25Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:52:26Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:52:27Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:52:28Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:52:29Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:52:30Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:52:31Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:52:32Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:52:32Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:52:34Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:52:35Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:52:35Z INFO ] Attempting Classic reset with default delay...
Error: espflash::connection_failed

  × Error while connecting to device
  ╰─▶ Failed to connect to the device
  help: Ensure that the device is connected and the reset and boot pins are not being held down

nope, try to see more

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ target/release/espflash board-info --help
Establish a connection with a target device

Usage: espflash board-info [OPTIONS]

Options:
  -b, --baud <BAUD>  Baud rate at which to communicate with target device [env: ESPFLASH_BAUD=]
  -p, --port <PORT>  Serial port connected to target device [env: ESPFLASH_PORT=]
      --no-stub      Do not use the RAM stub for loading
  -h, --help         Print help
  -V, --version      Print version

try with env variable

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ ESPFLASH_PORT="/dev/cuaU0" target/release/espflash board-info
[2023-05-23T20:54:52Z INFO ] Serial port: '/dev/cuau0'
[2023-05-23T20:54:52Z INFO ] Connecting...
[2023-05-23T20:54:52Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:54:53Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:54:54Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:54:55Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:54:56Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:54:57Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:54:57Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:54:58Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:55:00Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:55:00Z INFO ] Attempting Classic reset with default delay...
[2023-05-23T20:55:01Z INFO ] Attempting UnixTight reset with extra delay...
[2023-05-23T20:55:02Z INFO ] Attempting Classic reset with extra delay...
[2023-05-23T20:55:03Z INFO ] Attempting UnixTight reset with default delay...
[2023-05-23T20:55:04Z INFO ] Attempting Classic reset with default delay...
Error: espflash::connection_failed

  × Error while connecting to device
  ╰─▶ Failed to connect to the device
  help: Ensure that the device is connected and the reset and boot pins are not being held down

ok, so that is a problem.

2023-05-23: c1 - build espflash from source

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp $ git clone https://github.com/esp-rs/espflash.git
Cloning into 'espflash'...
remote: Enumerating objects: 4090, done.
remote: Counting objects: 100% (288/288), done.
remote: Compressing objects: 100% (163/163), done.
Receiving objects: 100% (4090/4090), 1.38 MiB | 9.39 MiB/s, done.
remote: Total 4090 (delta 154), reused 220 (delta 117), pack-reused 3802
Resolving deltas: 100% (2706/2706), done.
tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp $ cd espflash/

fetch pull request 387

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ git fetch origin pull/387/head:unix_tight
remote: Enumerating objects: 24, done.
remote: Counting objects: 100% (24/24), done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 24 (delta 17), reused 24 (delta 17), pack-reused 0
Unpacking objects: 100% (24/24), 10.18 KiB | 1.45 MiB/s, done.
From https://github.com/esp-rs/espflash
 * [new ref]         refs/pull/387/head -> unix_tight
tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ git switch unix_tight
Switched to branch 'unix_tight'

build it

tingo@kg-core1:~/personal/projects/2023/rust/embedded/esp/espflash $ cargo build --release 
  Downloaded is-terminal v0.4.5
  Downloaded home v0.5.4
  Downloaded supports-hyperlinks v2.0.0
  Downloaded clap_lex v0.3.3
  Downloaded filetime v0.2.20
  Downloaded generic-array v0.14.6
  Downloaded tempfile v3.4.0
  Downloaded openssl-macros v0.1.0
  Downloaded cpufeatures v0.2.6
  Downloaded getrandom v0.2.8
  Downloaded cargo_metadata v0.15.3
  Downloaded dialoguer v0.10.3
  Downloaded spin v0.9.6
  Downloaded hash32 v0.2.1
  Downloaded io-lifetimes v1.0.9
  Downloaded proc-macro2 v1.0.54
  Downloaded serde_derive v1.0.158
  Downloaded clap v4.1.13
  Downloaded clap_derive v4.1.12
  Downloaded heapless v0.7.16
  Downloaded flate2 v1.0.25
  Downloaded serde v1.0.158
  Downloaded openssl-sys v0.9.83
  Downloaded cpp_demangle v0.4.0
  Downloaded serde_json v1.0.95
  Downloaded crossterm v0.26.1
  Downloaded openssl v0.10.48
  Downloaded syn v2.0.10
  Downloaded clap v3.2.23
  Downloaded rustix v0.36.11
  Downloaded libc v0.2.140
  Downloaded libgit2-sys v0.14.1+1.5.0
  Downloaded curl-sys v0.4.61+curl-8.0.1
  Downloaded miette-derive v5.6.0
  Downloaded esp-idf-part v0.2.0
  Downloaded miette v5.6.0
  Downloaded openssl-src v111.25.2+1.1.1t
  Downloaded 37 crates (13.0 MB) in 2.95s (largest was `openssl-src` at 5.1 MB)
   Compiling libc v0.2.140
   Compiling proc-macro2 v1.0.54
   Compiling unicode-ident v1.0.8
   Compiling quote v1.0.26
   Compiling cfg-if v1.0.0
   Compiling autocfg v1.1.0
   Compiling pkg-config v0.3.26
   Compiling serde_derive v1.0.158
   Compiling syn v2.0.10
   Compiling serde v1.0.158
   Compiling version_check v0.9.4
   Compiling jobserver v0.1.26
   Compiling memchr v2.5.0
   Compiling cc v1.0.79
   Compiling bitflags v1.3.2
   Compiling once_cell v1.17.1
   Compiling ahash v0.7.6
   Compiling syn v1.0.109
   Compiling log v0.4.17
   Compiling openssl-src v111.25.2+1.1.1t
   Compiling libz-sys v1.1.8
   Compiling openssl-sys v0.9.83
   Compiling crc32fast v1.3.2
   Compiling indexmap v1.9.3
   Compiling io-lifetimes v1.0.9
   Compiling getrandom v0.2.8
   Compiling rustix v0.36.11
   Compiling errno v0.2.8
   Compiling semver v1.0.17
   Compiling hashbrown v0.12.3
   Compiling typenum v1.16.0
   Compiling tinyvec_macros v0.1.1
   Compiling tinyvec v1.6.0
   Compiling ring v0.16.20
   Compiling lock_api v0.4.9
   Compiling ryu v1.0.13
   Compiling itoa v1.0.6
   Compiling adler v1.0.2
   Compiling miniz_oxide v0.6.2
   Compiling unicode-normalization v0.1.22
   Compiling libnghttp2-sys v0.1.7+1.45.0
   Compiling serde_json v1.0.95
   Compiling percent-encoding v2.2.0
   Compiling unicode-bidi v0.3.13
   Compiling scopeguard v1.1.0
   Compiling smallvec v1.10.0
   Compiling idna v0.3.0
   Compiling form_urlencoded v1.1.0
   Compiling flate2 v1.0.25
   Compiling aho-corasick v0.7.20
   Compiling untrusted v0.7.1
   Compiling unicode-width v0.1.10
   Compiling regex-syntax v0.6.29
   Compiling rustversion v1.0.12
   Compiling spin v0.5.2
   Compiling regex v1.7.3
   Compiling url v2.3.1
   Compiling is-terminal v0.4.5
   Compiling libssh2-sys v0.2.23
   Compiling curl-sys v0.4.61+curl-8.0.1
   Compiling generic-array v0.14.6
   Compiling fnv v1.0.7
   Compiling parking_lot_core v0.9.7
   Compiling stable_deref_trait v1.2.0
   Compiling signal-hook v0.3.15
   Compiling heck v0.4.1
   Compiling ident_case v1.0.1
   Compiling strsim v0.10.0
   Compiling darling_core v0.14.4
   Compiling toml_datetime v0.6.1
   Compiling serde_spanned v0.6.1
   Compiling signal-hook-registry v1.4.1
   Compiling termcolor v1.2.0
   Compiling winnow v0.4.1
   Compiling thiserror v1.0.40
   Compiling radium v0.7.0
   Compiling static_assertions v1.1.0
   Compiling os_str_bytes v6.5.0
   Compiling cpp_demangle v0.4.0
   Compiling lazy_static v1.4.0
   Compiling unicode-linebreak v0.1.4
   Compiling toml_edit v0.19.8
   Compiling rustc_version v0.4.0
   Compiling darling_macro v0.14.4
   Compiling thiserror-impl v1.0.40
   Compiling libgit2-sys v0.14.1+1.5.0
   Compiling mio v0.8.6
   Compiling num-traits v0.2.15
   Compiling fastrand v1.9.0
   Compiling anyhow v1.0.70
   Compiling rustls v0.20.8
   Compiling tap v1.0.1
   Compiling fallible-iterator v0.2.0
   Compiling wyz v0.5.1
   Compiling tempfile v3.4.0
   Compiling gimli v0.27.2
   Compiling signal-hook-mio v0.2.3
   Compiling proc-macro-crate v1.3.1
   Compiling parking_lot v0.12.1
   Compiling darling v0.14.4
   Compiling heapless v0.7.16
   Compiling strum_macros v0.24.3
   Compiling object v0.30.3
   Compiling backtrace v0.3.67
   Compiling openssl v0.10.48
   Compiling rustc-demangle v0.1.22
   Compiling foreign-types-shared v0.1.1
   Compiling byteorder v1.4.3
   Compiling funty v2.0.0
   Compiling openssl-probe v0.1.5
   Compiling portable-atomic v0.3.19
   Compiling humantime v2.1.0
   Compiling curl v0.4.44
   Compiling addr2line v0.19.0
   Compiling bitvec v1.0.1
   Compiling hash32 v0.2.1
   Compiling foreign-types v0.3.2
   Compiling strum v0.24.1
   Compiling deku_derive v0.15.1
   Compiling block-buffer v0.10.4
   Compiling crypto-common v0.1.6
   Compiling console v0.15.5
   Compiling spin v0.9.6
   Compiling hex v0.4.3
   Compiling openssl-macros v0.1.0
   Compiling csv-core v0.1.10
   Compiling filetime v0.2.20
   Compiling socket2 v0.4.9
   Compiling dirs-sys v0.3.7
   Compiling either v1.8.1
   Compiling base64 v0.13.1
   Compiling regex-automata v0.1.10
   Compiling smawk v0.3.1
   Compiling same-file v1.0.6
   Compiling is_ci v1.1.1
   Compiling supports-color v2.0.0
   Compiling walkdir v2.3.3
   Compiling textwrap v0.15.2
   Compiling bstr v1.4.0
   Compiling binread_derive v2.1.0
   Compiling directories v4.0.1
   Compiling tar v0.4.38
   Compiling csv v1.2.1
   Compiling deku v0.15.1
   Compiling digest v0.10.6
   Compiling parse_int v0.6.0
   Compiling crossterm v0.25.0
   Compiling clap_lex v0.3.3
   Compiling nix v0.26.2
   Compiling clap_derive v4.1.12
   Compiling supports-unicode v2.0.0
   Compiling supports-hyperlinks v2.0.0
   Compiling serde_plain v1.0.1
   Compiling bitmaps v2.1.0
   Compiling miette-derive v5.6.0
   Compiling bytemuck_derive v1.4.1
   Compiling nix v0.24.3
   Compiling im-rc v15.1.0
   Compiling terminal_size v0.1.17
   Compiling atty v0.2.14
   Compiling dirs-sys-next v0.1.2
   Compiling vte_generate_state_changes v0.1.1
   Compiling rand_core v0.6.4
   Compiling number_prefix v0.4.0
   Compiling zero v0.1.3
   Compiling owo-colors v3.5.0
   Compiling zeroize v1.6.0
   Compiling camino v1.1.4
   Compiling bytes v1.4.0
   Compiling arrayvec v0.5.2
   Compiling md5 v0.7.0
   Compiling shell-words v1.1.0
   Compiling utf8parse v0.2.1
   Compiling hex v0.3.2
   Compiling cpufeatures v0.2.6
   Compiling sha2 v0.10.6
   Compiling vte v0.10.1
   Compiling dialoguer v0.10.3
   Compiling esp-idf-part v0.2.0
   Compiling combine v4.6.6
   Compiling miette v5.6.0
   Compiling globset v0.4.10
   Compiling serialport v4.2.0
   Compiling itertools v0.10.5
   Compiling xmas-elf v0.9.0
   Compiling rand_xoshiro v0.6.0
   Compiling indicatif v0.17.3
   Compiling directories-next v2.0.0
   Compiling bytemuck v1.13.1
   Compiling clap v4.1.13
   Compiling sized-chunks v0.6.5
   Compiling ctrlc v3.2.5
   Compiling comfy-table v6.1.4
   Compiling cargo v0.66.0
   Compiling binread v2.2.0
   Compiling toml v0.7.3
   Compiling env_logger v0.10.0
   Compiling crossterm v0.26.1
   Compiling clap_lex v0.2.4
   Compiling kstring v2.0.0
   Compiling cargo-platform v0.1.2
   Compiling thread_local v1.1.7
   Compiling slip-codec v0.3.4
   Compiling shell-escape v0.1.5
   Compiling base64 v0.21.0
   Compiling textwrap v0.16.0
   Compiling clap v3.2.23
   Compiling ignore v0.4.20
   Compiling toml_edit v0.14.4
   Compiling strip-ansi-escapes v0.1.1
   Compiling env_logger v0.9.3
   Compiling rustfix v0.6.1
   Compiling os_info v3.7.0
   Compiling serde_ignored v0.1.7
   Compiling lazycell v1.3.0
   Compiling glob v0.3.1
   Compiling home v0.5.4
   Compiling pathdiff v0.2.1
   Compiling bytesize v1.2.0
   Compiling unicode-xid v0.2.4
   Compiling webpki v0.22.0
   Compiling sct v0.7.0
   Compiling webpki-roots v0.22.6
   Compiling opener v0.5.2
   Compiling rustc-workspace-hack v1.0.0
   Compiling cargo_metadata v0.15.3
   Compiling ureq v2.6.2
   Compiling update-informer v0.6.0
   Compiling crypto-hash v0.3.4
   Compiling cargo-util v0.2.3
   Compiling espflash v2.0.0-rc.4 (/zs/tingo/personal/projects/2023/rust/embedded/esp/espflash/espflash)
   Compiling crates-io v0.34.0
   Compiling git2 v0.15.0
   Compiling git2-curl v0.16.0
   Compiling cargo-espflash v2.0.0-rc.4 (/zs/tingo/personal/projects/2023/rust/embedded/esp/espflash/cargo-espflash)
    Finished release [optimized] target(s) in 7m 21s

2023-05-23: c1 - try cargo espflash

tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ cargo espflash --version
cargo-espflash-espflash 2.0.0-rc.3
tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ cargo espflash --help
Cargo subcommand for flashing Espressif devices over serial

Usage: cargo espflash <COMMAND>

Commands:
  board-info       Display information about the connected board and exit without flashing
  flash            Flash an application to a target device
  monitor          Open the serial monitor without flashing
  partition-table  Operations for partitions tables
  save-image       Save the image to disk instead of flashing to device
  help             Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

try espflash board-info

tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ cargo espflash board-info
[2023-05-23T20:31:38Z INFO ] Detected 2 serial ports
[2023-05-23T20:31:38Z INFO ] Ports which match a known common dev board are highlighted
[2023-05-23T20:31:38Z INFO ] Please select a port
[2023-05-23T20:31:44Z INFO ] Serial port: '/dev/cuaU0'
[2023-05-23T20:31:44Z INFO ] Connecting...
[2023-05-23T20:31:48Z INFO ] Unable to connect, retrying with extra delay...
[2023-05-23T20:31:49Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       58:cf:79:05:5c:e8

now try with port specified

tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ cargo espflash board-info --port /dev/cuaU0
[2023-05-23T20:32:46Z INFO ] Serial port: '/dev/cuau0'
[2023-05-23T20:32:46Z INFO ] Connecting...
[2023-05-23T20:32:47Z INFO ] Unable to connect, retrying with extra delay...
[2023-05-23T20:32:48Z INFO ] Unable to connect, retrying with default delay...
[2023-05-23T20:32:49Z INFO ] Unable to connect, retrying with extra delay...
[2023-05-23T20:32:50Z INFO ] Unable to connect, retrying with default delay...
[2023-05-23T20:32:51Z INFO ] Unable to connect, retrying with extra delay...
[2023-05-23T20:32:52Z INFO ] Unable to connect, retrying with default delay...
[2023-05-23T20:32:52Z INFO ] Unable to connect, retrying with extra delay...
Error: espflash::connection_failed

  × Error while connecting to device
  ╰─▶ Failed to connect to the device
  help: Ensure that the device is connected and the reset and boot pins are not being held down

hmm, that doesn't work.

2023-05-23: c1 - cargo - install latest cargo-espflash

tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ cargo install cargo-espflash@2.0.0-rc.3
  Downloaded cargo-espflash v2.0.0-rc.3
  Downloaded 1 crate (27.1 KB) in 1.28s
    Updating crates.io index
  Installing cargo-espflash v2.0.0-rc.3
  Downloaded serde_ignored v0.1.7
  Downloaded smallvec v0.6.14
  Downloaded shell-escape v0.1.5
  Downloaded pathdiff v0.2.1
  Downloaded ident_case v1.0.1
  Downloaded regex v1.8.2
  Downloaded toml_edit v0.14.4
  Downloaded toml_edit v0.19.9
  Downloaded syn v2.0.16
  Downloaded clap_derive v4.3.0
  Downloaded console v0.15.7
  Downloaded clap_lex v0.2.4
  Downloaded esp-idf-part v0.1.2
  Downloaded maybe-uninit v2.0.0
  Downloaded glob v0.3.1
  Downloaded os_str_bytes v6.5.0
  Downloaded hex v0.3.2
  Downloaded strip-ansi-escapes v0.1.1
  Downloaded slip-codec v0.3.4
  Downloaded zero v0.1.3
  Downloaded serde-hex v0.1.0
  Downloaded serde_plain v1.0.1
  Downloaded nodrop v0.1.14
  Downloaded crypto-hash v0.3.4
  Downloaded combine v4.6.6
  Downloaded bstr v1.5.0
  Downloaded darling v0.14.4
  Downloaded portable-atomic v0.3.20
  Downloaded darling_macro v0.14.4
  Downloaded opener v0.5.2
  Downloaded rustfix v0.6.1
  Downloaded proc-macro-crate v1.3.1
  Downloaded lazycell v1.3.0
  Downloaded directories-next v2.0.0
  Downloaded bitflags v2.0.2
  Downloaded serialport v4.2.1
  Downloaded portable-atomic v1.3.2
  Downloaded binread_derive v2.1.0
  Downloaded crates-io v0.34.0
  Downloaded cargo-util v0.2.3
  Downloaded os_info v3.7.0
  Downloaded sized-chunks v0.6.5
  Downloaded xmas-elf v0.9.0
  Downloaded rand_xoshiro v0.6.0
  Downloaded miette-derive v5.9.0
  Downloaded comfy-table v6.1.4
  Downloaded crossterm v0.25.0
  Downloaded git2 v0.15.0
  Downloaded miette v5.9.0
  Downloaded parse_int v0.6.0
  Downloaded vte v0.10.1
  Downloaded textwrap v0.16.0
  Downloaded array-init v0.0.4
  Downloaded rustc-workspace-hack v1.0.0
  Downloaded base64 v0.21.1
  Downloaded libssh2-sys v0.2.23
  Downloaded regex-syntax v0.7.2
  Downloaded espflash v2.0.0-rc.3
  Downloaded bitmaps v2.1.0
  Downloaded binread v2.2.0
  Downloaded md5 v0.7.0
  Downloaded im-rc v15.1.0
  Downloaded deku_derive v0.15.1
  Downloaded darling_core v0.14.4
  Downloaded csv-core v0.1.10
  Downloaded vte_generate_state_changes v0.1.1
  Downloaded signal-hook-mio v0.2.3
  Downloaded deku v0.15.1
  Downloaded curl v0.4.44
  Downloaded bytemuck_derive v1.4.1
  Downloaded arrayvec v0.5.2
  Downloaded env_logger v0.9.3
  Downloaded dirs-sys-next v0.1.2
  Downloaded bytemuck v1.13.1
  Downloaded clap_lex v0.5.0
  Downloaded clap v4.3.0
  Downloaded clap v3.2.25
  Downloaded toml_datetime v0.6.2
  Downloaded proc-macro2 v1.0.58
  Downloaded digest v0.10.7
  Downloaded clap_builder v4.3.0
  Downloaded csv v1.2.1
  Downloaded libgit2-sys v0.14.2+1.5.1
  Downloaded git2-curl v0.16.0
  Downloaded libz-sys v1.1.9
  Downloaded curl-sys v0.4.62+curl-8.1.0
  Downloaded libnghttp2-sys v0.1.7+1.45.0
  Downloaded cargo v0.66.0
  Downloaded 88 crates (19.6 MB) in 2.17s (largest was `libnghttp2-sys` at 4.5 MB)
   Compiling libc v0.2.144
   Compiling proc-macro2 v1.0.58
   Compiling quote v1.0.27
   Compiling unicode-ident v1.0.8
   Compiling cfg-if v1.0.0
   Compiling pkg-config v0.3.27
   Compiling version_check v0.9.4
   Compiling memchr v2.5.0
   Compiling bitflags v1.3.2
   Compiling autocfg v1.1.0
   Compiling once_cell v1.17.1
   Compiling syn v2.0.16
   Compiling ahash v0.7.6
   Compiling jobserver v0.1.26
   Compiling cc v1.0.79
   Compiling serde v1.0.163
   Compiling libz-sys v1.1.9
   Compiling openssl-src v111.25.3+1.1.1t
   Compiling log v0.4.17
   Compiling openssl-sys v0.9.87
   Compiling io-lifetimes v1.0.10
   Compiling crc32fast v1.3.2
   Compiling rustix v0.37.19
   Compiling errno v0.3.1
   Compiling getrandom v0.2.9
   Compiling syn v1.0.109
   Compiling indexmap v1.9.3
   Compiling hashbrown v0.12.3
   Compiling serde_derive v1.0.163
   Compiling adler v1.0.2
   Compiling typenum v1.16.0
   Compiling tinyvec_macros v0.1.1
   Compiling tinyvec v1.6.0
   Compiling miniz_oxide v0.7.1
   Compiling libnghttp2-sys v0.1.7+1.45.0
   Compiling ring v0.16.20
   Compiling itoa v1.0.6
   Compiling ryu v1.0.13
   Compiling flate2 v1.0.26
   Compiling unicode-normalization v0.1.22
   Compiling is-terminal v0.4.7
   Compiling serde_json v1.0.96
   Compiling percent-encoding v2.2.0
   Compiling smallvec v1.10.0
   Compiling unicode-bidi v0.3.13
   Compiling form_urlencoded v1.1.0
   Compiling idna v0.3.0
   Compiling libssh2-sys v0.2.23
   Compiling curl-sys v0.4.62+curl-8.1.0
   Compiling aho-corasick v1.0.1
   Compiling spin v0.5.2
   Compiling regex-syntax v0.7.2
   Compiling unicode-width v0.1.10
   Compiling rustversion v1.0.12
   Compiling utf8parse v0.2.1
   Compiling untrusted v0.7.1
   Compiling regex v1.8.2
   Compiling url v2.3.1
   Compiling generic-array v0.14.7
   Compiling cpp_demangle v0.4.1
   Compiling ident_case v1.0.1
   Compiling strsim v0.10.0
   Compiling heck v0.4.1
   Compiling fnv v1.0.7
   Compiling darling_core v0.14.4
   Compiling libgit2-sys v0.14.2+1.5.1
   Compiling lock_api v0.4.9
   Compiling semver v1.0.17
   Compiling toml_datetime v0.6.2
   Compiling scopeguard v1.1.0
   Compiling parking_lot_core v0.9.7
   Compiling anyhow v1.0.71
   Compiling radium v0.7.0
   Compiling static_assertions v1.1.0
   Compiling thiserror v1.0.40
   Compiling stable_deref_trait v1.2.0
   Compiling lazy_static v1.4.0
   Compiling winnow v0.4.6
   Compiling fallible-iterator v0.2.0
   Compiling signal-hook v0.3.15
   Compiling unicode-linebreak v0.1.4
   Compiling gimli v0.27.2
   Compiling toml_edit v0.19.9
   Compiling darling_macro v0.14.4
   Compiling object v0.30.3
   Compiling thiserror-impl v1.0.40
   Compiling backtrace v0.3.67
   Compiling signal-hook-registry v1.4.1
   Compiling num-traits v0.2.15
   Compiling portable-atomic v1.3.2
   Compiling openssl-probe v0.1.5
   Compiling tap v1.0.1
   Compiling openssl v0.10.52
   Compiling rustls v0.20.8
   Compiling fastrand v1.9.0
   Compiling rustc-demangle v0.1.23
   Compiling maybe-uninit v2.0.0
   Compiling termcolor v1.2.0
   Compiling foreign-types-shared v0.1.1
   Compiling curl v0.4.44
   Compiling foreign-types v0.3.2
   Compiling addr2line v0.19.0
   Compiling tempfile v3.5.0
   Compiling wyz v0.5.1
   Compiling proc-macro-crate v1.3.1
   Compiling darling v0.14.4
   Compiling strum_macros v0.24.3
   Compiling anstyle-parse v0.2.0
   Compiling miniz_oxide v0.6.2
   Compiling openssl-macros v0.1.1
   Compiling mio v0.8.6
   Compiling filetime v0.2.21
   Compiling socket2 v0.4.9
   Compiling colorchoice v1.0.0
   Compiling humantime v2.1.0
   Compiling same-file v1.0.6
   Compiling portable-atomic v0.3.20
   Compiling anstyle v1.0.0
   Compiling anstyle-query v1.0.0
   Compiling regex-automata v0.1.10
   Compiling funty v2.0.0
   Compiling anstream v0.3.2
   Compiling bstr v1.5.0
   Compiling bitvec v1.0.1
   Compiling walkdir v2.3.3
   Compiling strum v0.24.1
   Compiling tar v0.4.38
   Compiling signal-hook-mio v0.2.3
   Compiling parking_lot v0.12.1
   Compiling deku_derive v0.15.1
   Compiling crypto-common v0.1.6
   Compiling block-buffer v0.10.4
   Compiling console v0.15.7
   Compiling bitmaps v2.1.0
   Compiling aho-corasick v0.7.20
   Compiling csv-core v0.1.10
   Compiling atty v0.2.14
   Compiling dirs-sys v0.3.7
   Compiling vte_generate_state_changes v0.1.1
   Compiling im-rc v15.1.0
   Compiling smawk v0.3.1
   Compiling nodrop v0.1.14
   Compiling base64 v0.13.1
   Compiling either v1.8.1
   Compiling bytes v1.4.0
   Compiling rand_core v0.6.4
   Compiling clap_lex v0.5.0
   Compiling camino v1.1.4
   Compiling is_ci v1.1.1
   Compiling hex v0.3.2
   Compiling os_str_bytes v6.5.0
   Compiling arrayvec v0.5.2
   Compiling vte v0.10.1
   Compiling clap_lex v0.2.4
   Compiling supports-color v2.0.0
   Compiling itertools v0.10.5
   Compiling clap_builder v4.3.0
   Compiling combine v4.6.6
   Compiling rand_xoshiro v0.6.0
   Compiling binread_derive v2.1.0
   Compiling array-init v0.0.4
   Compiling globset v0.4.10
   Compiling textwrap v0.15.2
   Compiling directories v4.0.1
   Compiling csv v1.2.1
   Compiling sized-chunks v0.6.5
   Compiling digest v0.10.7
   Compiling smallvec v0.6.14
   Compiling deku v0.15.1
   Compiling parse_int v0.6.0
   Compiling cargo v0.66.0
   Compiling crossterm v0.25.0
   Compiling backtrace-ext v0.2.1
   Compiling nix v0.26.2
   Compiling kstring v2.0.0
   Compiling clap_derive v4.3.0
   Compiling supports-unicode v2.0.0
   Compiling supports-hyperlinks v2.1.0
   Compiling serde_plain v1.0.1
   Compiling cargo-platform v0.1.2
   Compiling bytemuck_derive v1.4.1
   Compiling miette-derive v5.9.0
   Compiling terminal_size v0.1.17
   Compiling dirs-sys-next v0.1.2
   Compiling thread_local v1.1.7
   Compiling zeroize v1.6.0
   Compiling shell-escape v0.1.5
   Compiling owo-colors v3.5.0
   Compiling zero v0.1.3
   Compiling number_prefix v0.4.0
   Compiling md5 v0.7.0
   Compiling shell-words v1.1.0
   Compiling hex v0.4.3
   Compiling textwrap v0.16.0
   Compiling cpufeatures v0.2.7
   Compiling bitflags v2.0.2
   Compiling serialport v4.2.1
   Compiling miette v5.9.0
   Compiling sha2 v0.10.6
   Compiling crypto-hash v0.3.4
   Compiling cargo-util v0.2.3
   Compiling clap v3.2.25
   Compiling dialoguer v0.10.4
   Compiling esp-idf-part v0.1.2
   Compiling indicatif v0.17.3
   Compiling xmas-elf v0.9.0
   Compiling ignore v0.4.20
   Compiling directories-next v2.0.0
   Compiling bytemuck v1.13.1
   Compiling clap v4.3.0
   Compiling toml_edit v0.14.4
   Compiling comfy-table v6.1.4
   Compiling serde-hex v0.1.0
   Compiling binread v2.2.0
   Compiling strip-ansi-escapes v0.1.1
   Compiling env_logger v0.9.3
   Compiling env_logger v0.10.0
   Compiling rustfix v0.6.1
   Compiling toml v0.5.11
   Compiling serde_ignored v0.1.7
   Compiling os_info v3.7.0
   Compiling unicode-xid v0.2.4
   Compiling bytesize v1.2.0
   Compiling opener v0.5.2
   Compiling lazycell v1.3.0
   Compiling slip-codec v0.3.4
   Compiling rustc-workspace-hack v1.0.0
   Compiling home v0.5.5
   Compiling base64 v0.21.1
   Compiling pathdiff v0.2.1
   Compiling glob v0.3.1
   Compiling cargo_metadata v0.15.4
   Compiling webpki v0.22.0
   Compiling sct v0.7.0
   Compiling webpki-roots v0.22.6
   Compiling ureq v2.6.2
   Compiling update-informer v0.6.0
   Compiling espflash v2.0.0-rc.3
   Compiling crates-io v0.34.0
   Compiling git2 v0.15.0
   Compiling git2-curl v0.16.0
   Compiling cargo-espflash v2.0.0-rc.3
    Finished release [optimized] target(s) in 9m 08s
  Installing /home/tingo/.cargo/bin/cargo-espflash
   Installed package `cargo-espflash v2.0.0-rc.3` (executable `cargo-espflash`)

2023-05-23: c1 - connecting the devboard to a FreeBSD workstation, I see this in /var/log/messages

May 23 22:04:50 kg-core1 kernel: ugen3.4: <Silicon Labs CP2102N USB to UART Bridge Controller> at usbus3
May 23 22:04:50 kg-core1 webcamd[72334]: webcamd: Cannot find USB device
May 23 22:04:50 kg-core1 kernel: uslcom0 on uhub8
May 23 22:04:50 kg-core1 kernel: uslcom0: <Silicon Labs CP2102N USB to UART Bridge Controller, class 0/0, rev 2.00/1.00, addr 4> on usbus3

usbconfig says

root@kg-core1:~ # usbconfig -d ugen3.4
ugen3.4: <Silicon Labs CP2102N USB to UART Bridge Controller> at usbus3, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)

device description

root@kg-core1:~ # usbconfig -d ugen3.4 dump_device_desc
ugen3.4: <Silicon Labs CP2102N USB to UART Bridge Controller> at usbus3, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x0000  <Probed by interface class>
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x10c4 
  idProduct = 0xea60 
  bcdDevice = 0x0100 
  iManufacturer = 0x0001  <Silicon Labs>
  iProduct = 0x0002  <CP2102N USB to UART Bridge Controller>
  iSerialNumber = 0x0003  <0412059a13d6eb11aaba063644d319e3>
  bNumConfigurations = 0x0001

ttyname

root@kg-core1:~ # sysctl dev.uslcom.0.ttyname
dev.uslcom.0.ttyname: U0

list ttys

root@kg-core1:~ # ll /dev/cuaU* /dev/ttyU*
crw-rw----  1 uucp  dialer  0x1ad May 23 22:04 /dev/cuaU0
crw-rw----  1 uucp  dialer  0x1ba May 23 22:04 /dev/cuaU0.init
crw-rw----  1 uucp  dialer  0x1be May 23 22:04 /dev/cuaU0.lock
crw-------  1 root  wheel    0xb2 May 23 22:04 /dev/ttyU0
crw-------  1 root  wheel   0x1ab May 23 22:04 /dev/ttyU0.init
crw-------  1 root  wheel   0x1ac May 23 22:04 /dev/ttyU0.lock

and usb files

root@kg-core1:~ # ls -l /dev/ugen3.4  /dev/usb/3.4*
lrwxr-xr-x  1 root  wheel        9 May 23 22:04 /dev/ugen3.4 -> usb/3.4.0
crw-------  1 root  operator  0xac May 23 22:04 /dev/usb/3.4.0
crw-------  1 root  operator  0xaf May 23 22:04 /dev/usb/3.4.2

now try probe-run

tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ probe-run --list-probes
Error: no probe was found.

Common reasons for this are faulty cables or missing permissions.
For detailed instructions, visit: https://github.com/knurling-rs/probe-run#troubleshooting
tingo@kg-core1:~/personal/projects/2023/rust/embedded/riscv $ sudo probe-run --list-probes
Error: no probe was found.

Common reasons for this are faulty cables or missing permissions.
For detailed instructions, visit: https://github.com/knurling-rs/probe-run#troubleshooting

ok, probe-run doesn't work.

2023-05-23: I created this page.

2023-05-22: I received the package from Mouser.

2023-05-16: the order was shipped.

2023-05-15: I ordered a ESP32-C3-DevKitC-02 (356-ESP32C3DEVKITC02)from Mouser, price was NOK 93.91.