The Stm32f103 Arm Microcontroller And Embedded Systems Pdf |best|

int main(void) // Enable clock for GPIOC RCC->APB2ENR

Specifically noted as a top choice for those starting with the STM32 line due to its clear diagrams and circuit drawings. the stm32f103 arm microcontroller and embedded systems pdf

stm32f103c8.pdf Purpose: Selection & Pinouts. What to scan: int main(void) // Enable clock for GPIOC RCC->APB2ENR