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* lib: Update stm32f1 code to version 1.8.0Kevin O'Connor2019-07-211-881/+0
| | | | | | | | | Update the stm32f1 code to the latest from ST. Merge the lib/cmsis-stm32f1/ and lib/hal-stm32f1/ into a single lib/stm32f1/ directory. Document all the differences from the pristine upstream code. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
* Add STM32F103 portGrigori Goronzy2018-04-091-0/+881
Add a fully functional STM32F1 port, currently mostly targeting STM32F103 microcontrollers. This requires an 8 MHz XTAL. The maximum possible step rate is around 282K steps per second. This uses stm32flash to burn the firmware. The bootloader needs to be started by setting BOOT0 to 1 and resetting the MCU. There is no automatic bootloader, unlike on Arduino. Signed-off-by: Grigori Goronzy <greg@kinoho.net>