In this example, the target microcontroller to be used is the STM32F411CEU6.ġ) Detect the ST-Link/V2 programmer and the target MCU. If you want to use MicroPython for STM32, the next step is to use the stlink-tools software and the ST-Link/V2 programmer for flashing the MicroPython firmware. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubĪn Arduino sketch is provided below as as example: // on-board LEDs (used for TX/RX activity indication) #define LED1 25 // PB03 #define LED2 26 // PA7 #define INTERVAL_MSEC (100) uint32_t ts // used to save timestamp void setup() Now, you can use the Arduino IDE software to write an Arduino sketch and upload it to the SAMD21 board via USB.Ĭonnect the SAMD21 board to the RPi and run the following command to detect the device (flashed with Arduino bootloader): $ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 040: ID 2341:804d Arduino SA Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. This configuration file will be used for flashing the bootloader firmware to an Arduino Zero compatible microcontroller board (I used the RobotDyn SAMD21 M0-Mini board).Īrduino SAMD21 Firmware Flashing with OpenOCD source #source transport select swd set CHIPNAME at91samd21g18 set CPUTAPID 0x0bc11477 set ENDIAN little telnet_port disabled reset_config srst_nogate adapter srst delay 100 adapter srst pulse_width 100 source openocd.cfg) with the following contents. openocd.cfg for OpenOCD:Įdit and save the configuration file (. There are two different Arduino bootloaders for SAMD21 available for selection.Īdafruit Bootloader (Option 1) # Download the Adafruit UF2 bootloader for SAMD21 # $ wget -c -q $ BOOTLOADER_FILE=./bootloader-zero-v3.13.0.binĪrduino Bootloader (Option 2) # Download the Arduino SAMD21 SAM-BA Bootloader $ wget $ BOOTLOADER_FILE=./samd21_sam_ba.binĢ) Create and edit a new configuration file. Firmware Flashing for SAMD21 with OpenOCDĪs a demo, the DAP-Link / CMSIS-DAP debug probe and the OpenOCD software tool will be used to re-flash the bootloader for a SAMD21-based Arduino-Zero compatible board. tar.bz2 file to the directory /opt $ sudo tar xjf 2 -C /opt # Try to run the 'arm-none-eabi-gcc' command: $ /opt/gcc-arm-none-eabi-10-2020-q4-major/bin/arm-none-eabi-gcc -version arm-none-eabi-gcc (GNU Arm Embedded Toolchain 10-2020-q4-major) 10.2.1 20201103 (release) Copyright (C) 2020 Free Software Foundation, Inc. Steps for software installation are listed below: # Download the tar.bz2 file $ wget -c # Extract the. Note: As an alternative to the software provided by XPACK, you can use the GNU Arm Embedded Toolchain provided by Arm Ltd. Now, the GNU Arm Embedded GCC software is successfully installed. Next, try to run the arm-none-eabi-gcc command: $ which arm-none-eabi-gcc /opt/xpack-arm-none-eabi-gcc-10.2.1-1.1/bin/arm-none-eabi-gcc $ arm-none-eabi-gcc -version arm-none-eabi-gcc (xPack GNU Arm Embedded GCC, 64-bit) 10.2.1 20201103 (release) Copyright (C) 2020 Free Software Foundation, Inc. xpack-arm-none-eabi-gcc-10.2.1-1.1 /opt/Įdit the ~/.profile file: $ nano ~/.profileĪdd / append the following line to update the $PATH environment variable and save the change to file (to save and exit the nano editor, type Ctrl+O to save file and Ctrl+X to exit) PATH="$PATH:/opt/xpack-arm-none-eabi-gcc-10.2.1-1.1/bin" xpack-arm-none-eabi-gcc-10.2. $ sudo mv. tar.gz file and move the directory to /opt $ tar xfz. tar.gz file from github $ wget -c # Extract the. Steps to download and install the XPACK GNU Arm Embedded GCC software for ARM 64-bit computer: # Download the.
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