bluepill firmware that turns it into a USB-I2C multimaster gateway with a simple serial protocol.

Ondřej Hruška 08dc4e3c9e add readme & switch to production build		4年前
Core	make it work!	4年前
Drivers	make it work!	4年前
Middlewares	initial, cdc works	4年前
USB_DEVICE	make it work!	4年前
.cproject	initial, cdc works	4年前
.gitignore	initial, cdc works	4年前
.mxproject	initial, cdc works	4年前
.project	initial, cdc works	4年前
CMakeLists.txt	initial, cdc works	4年前
CMakeLists_template.txt	initial, cdc works	4年前
Makefile	add readme & switch to production build	4年前
README.md	add readme & switch to production build	4年前
STM32F103CBTX_FLASH.ld	initial, cdc works	4年前
STM32F103CBTx_FLASH.ld	initial, cdc works	4年前
bluepill-i2c-gw.ioc	make it work!	4年前
startup_stm32f103xb.s	initial, cdc works	4年前

Bluepill USB-I2C gateway

Hardware

This is a firmware for STM32F103R8T6 Bluepill.

The project can be customized using STM32CubeMX.

there's some changes in the i2c HAL driver, careful!

line 6364

  // HACK - ignore HAL_I2C_ERROR_AF
  if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE && hi2c->ErrorCode != HAL_I2C_ERROR_AF)

this allows receiving frames of unknown length

use the makefile and flash using a st-link dongle.

Requires: Make, arm-none-eabi-gcc, st-flash

make -j
make flash