STM32F100R8T6B support

1

is it possible to use the stm32f100r8t6b with platformio

2

platform-ststm32/boards at develop · platformio/platform-ststm32 · GitHub doesn’t have a board definition for it, so you’d have to create one. E:g., to use the board with the Arduino framework, which is supported through here), you could first create an abitrary project (e.g. Uno + Arduino), then create a boards/ folder in the project with genericSTM32F100R8T6.json

{
    "build": {
      "core": "stm32",
      "cpu": "cortex-m3",
      "extra_flags": "-DSTM32F100xB -DSTM32F1",
      "f_cpu": "24000000L",
      "hwids": [
        [
          "0x1EAF",
          "0x0003"
        ],
        [
          "0x1EAF",
          "0x0004"
        ]
      ],
      "mcu": "stm32f100r8t6",
      "product_line": "STM32F100x8",
      "variant": "STM32F1xx/F100R(8-B)T"
    },
    "debug": {
      "jlink_device": "STM32F100R8",
      "openocd_target": "stm32f1x",
      "svd_path": "STM32F100xx.svd"
    },
    "frameworks": [
      "arduino",
      "cmsis",
      "libopencm3",
      "stm32cube"
    ],
    "name": "STM32F100R8 (8k RAM. 64 Flash)",
    "upload": {
      "disable_flushing": false,
      "maximum_ram_size": 8192,
      "maximum_size": 65536,
      "protocol": "stlink",
      "protocols": [
        "jlink",
        "cmsis-dap",
        "stlink",
        "blackmagic",
        "serial",
        "dfu"
      ],
      "require_upload_port": true,
      "use_1200bps_touch": false,
      "wait_for_upload_port": false
    },
    "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32f100r8.html",
    "vendor": "Generic"
  }

And then change the platformio.ini to

[env:genericSTM32F100R8T6]
platform = ststm32
board = genericSTM32F100R8T6
framework = arduino

and an empty sketch of src/main.cpp

#include <Arduino.h>

void setup() {}
void loop() {}

should compile normally.

Linking .pio\build\genericSTM32F100R8T6\firmware.elf
Checking size .pio\build\genericSTM32F100R8T6\firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [=         ]   9.8% (used 800 bytes from 8192 bytes)
Flash: [=         ]  10.6% (used 6940 bytes from 65536 bytes)
Building .pio\build\genericSTM32F100R8T6\firmware.bin
3

thankyou,
i cant test it now because i dont have my stlink on me but i will test it

4

i used an nucleo as stlink (it worked with stm32cubeprogrammer) it didnt upload succesfully:

RAM: [= ] 9.6% (used 784 bytes from 8192 bytes)
Flash: [== ] 15.2% (used 9992 bytes from 65536 bytes)
Configuring upload protocol…
AVAILABLE: blackmagic, cmsis-dap, dfu, jlink, serial, stlink
CURRENT: upload_protocol = stlink
Uploading .pio/build/genericSTM32F100R8T6/firmware.elf
xPack OpenOCD x86_64 Open On-Chip Debugger 0.11.0+dev (2021-10-16-21:15)
Licensed under GNU GPL v2
For bug reports, read
OpenOCD: Bug Reporting
debug_level: 1

hla_swd
Warn : UNEXPECTED idcode: 0x2ba01477
Error: expected 1 of 1: 0x1ba01477
in procedure ‘program’
** OpenOCD init failed **
shutdown command invoked

*** [upload] Error 1

5

That’s expected when you have a fake chip. Instead of a genuine ST microelectronics chips someone put a chinese clone chip on there. You need to add a config line to override the expected ID code of the chip to the fake one per

6

thats not neccesary i identified the issue: i set a jumper on the nucleo wrong but now it works (it is a genuine chip, with the arm and st logo)

7

Hm, never seen that one before. Usually such an IDCODE identifies a fake chip.

Great that it’s working now.

8

what usart port does platformio use as the normal Serial on the stm32f100r8t6b

9

The Arduino core controls this aspect, not PlatformIO itself.

10

ok thnkyou so it is using USART2 right?

11

Yes exactly that’s the case.