The firmware for ESP32 NCP present on Argon and Tracker.
- Ensure the xtensa-esp32 toolchain is in your PATH. It can be downloaded from the ESP-IDF Programming Guide.
After pulling changes from the repo, run
git submodule update --init --recursive
Platform name needs to be passed as make argument, e.g.:
$ make PLATFORM=argon
Support platform names: tracker, argon.
This step MUST be done before building the firmware
$ make PLATFORM=argon defconfig
$ make PLATFORM=argon
The resulting binaries can be found in build directory:
- Raw binary files are named:
argon-esp32-ncp.bin/tracker-esp32-ncp.bin - Modules (that can be flashed OTA or with YModem) contain the version in their name:
argon-esp32-ncp@0.0.8.bin/tracker-esp32-ncp@0.0.8.bin
$ make PLATFORM=argon factory_bin
The combined factory binary spanning the whole ESP32 flash will be written to build/${PLATFORM}-esp32-ncp-factory@${VERSION}.bin.
Please edit version.mk and perform a clean build.
By default, the firmware runs an AT command interface on UART2 (TX: GPIO17, RX: GPIO16, HW flow control disabled).
Uploading a binary using picocom and lrzsz tools:
$ picocom /dev/ttyUSB1 --baud 921600 --omap crcrlf --send-cmd "sx -k -b -X"
AT+FWUPD=<image size in bytes>
OK
<CTRL+a><CTRL-s>
*** file: /path/to/argon-ncp-firmware.bin
$ picocom /dev/cu.xxxxxx --baud 921600 --omap crcrlf --send-cmd "lsx -k -b -X"
AT+FWUPD=<image size in bytes>
OK
<CTRL+a><CTRL-s>
*** file: /path/to/argon-ncp-firmware.bin
This firmware is based on AT application for ESP32 ESP-IDF (https://github.com/espressif/esp32-at) and at the moment only enables Base and WiFi AT command sets (https://www.espressif.com/sites/default/files/documentation/esp32_at_instruction_set_and_examples_en.pdf).
The NCP firmware also implements a number of additional AT commands.
Retrieves Argon NCP firmware version.
AT+CGMR
Example:
> AT+CGMR
< 0.0.2
< OK
Retrieves Argon MCP firmware module version.
AT+MVER
Example:
> AT+MVER
< 1
< OK
Initiates firmware update process and starts XModem server.
AT+FWUPD=<binary size>
<binary size>: size of the binary to be transmitted using XModem in bytes.
Example:
> AT+FWUPD=123456
< +FWUPD: ONGOING
> (XModem transfer)
> OK
After the XModem transfer completes, the NCP will output the final result code. In case of OK, the NCP will restart, in case of an ERROR will continue execution.
Set/retrieve GPIO configuration.
Retrieves the expected command parameters and their ranges.
AT+GPIOC=?
Example:
> AT+GPIOC=?
< +GPIOC: (0-39),(0-3),(0-2),(0-1)
< OK
Retrieves the current GPIO configuration for each pin.
NOTE: Only the pins that were previously configured using AT+GPIOC will be present in the list.
AT+GPIOC?
+GPIOC: <pin0>,<gpio_mode>,<gpio_pull>
+GPIOC: <pin1>,<gpio_mode>,<gpio_pull>
...
Example:
> AT+GPIOC?
< +GPIOC: 2,2,0
< +GPIOC: 4,1,0
<
< OK
Sets the GPIO configuration.
AT+GPIOC=<pin>,<gpio_mode>[,<gpio_pull>][,<gpio_default>]
<pin>: pin number (0-39)<gpio_mode>: 0 -DISABLED, 1 -INPUT, 2 -OUTPUT, 3 -OUTPUT_OD<gpio_pull>: (optional) 0 - no pull (default), 1 - pull-down, 2 - pull-up<gpio_default>: (optional) default value to immediately set on a pin configured asOUTPUT. 0 - low, 1 - high
Example, configures pin number 4 as INPUT with pull-up
> AT+GPIOC=4,1,2
< OK
Retrieves the expected command parameters and their ranges.
AT+GPIOR=?
Example:
> AT+GPIOR=?
< +GPIOR: (0-39)
< OK
Reads the current logical value on the specified GPIO pin (both INPUT and OUTPUT).
AT+GPIOR=<pin>
<pin>: pin number (0-39)
Example:
> AT+GPIOR=4
< +GPIOR: 1
< OK
Retrieves the expected command parameters and their ranges.
AT+GPIOW=?
Example:
> AT+GPIOW=?
< +GPIOW: (0-33),(0-1)
< OK
AT+GPIOW=<pin>,<level>
<pin>: pin number (0-33)<level>: logical level to set, 0 - low, 1 - high
Example:
> AT+GPIOW=1,0
< OK
Retrieves the expected command parameters and their ranges.
AT+GETMAC=?
Example:
> AT+GETMAC=?
< +GETMAC: (0-3)
< OK
AT+GETMAC=<type>
<type>, 0 - WiFi Station, 1 - WiFi AP, 2 - Bluetooth, 3 - Ethernet
Example:
> AT+GETMAC=0
< +GETMAC: "24:0a:c4:10:9d:f4"
< OK