Basic vanilla C boilerplate for STM32L100xC (Discovery L100C). Uses GCC. This was some class project without much practical use
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#include <common.h>
#include "utils/usart.h"
#include "utils/timebase.h"
#include "init.h"
void blink(void) {
GPIOC_ODR ^= BIT9;
}
/** Called before main() */
void SystemInit(void)
{
init_clock();
init_systick();
init_gpios();
init_usart();
schedule_timed_task(blink, 500);
}
int main(void)
{
while (1) {
delay_ms(1000);
GPIOC_ODR ^= BIT8;
usart_tx_string(USART3, "HELLO\r\n");
}
}