This commit is contained in:
Imbus 2025-07-15 19:21:01 +02:00
parent 7b52f473f1
commit 6933084c76

31
main.c
View file

@ -2,31 +2,30 @@
#include <libopencm3/stm32/rcc.h> #include <libopencm3/stm32/rcc.h>
static void clock_setup(void) { static void clock_setup(void) {
// Use external 8 MHz HSE and PLL to 72 MHz // Use external 8 MHz HSE and PLL to 72 MHz
rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]); rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
rcc_periph_clock_enable(RCC_GPIOC); rcc_periph_clock_enable(RCC_GPIOC);
} }
static void gpio_setup(void) { static void gpio_setup(void) {
// gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO13); // gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO13);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
GPIO13);
} }
static void delay(volatile uint32_t count) { static void delay(volatile uint32_t count) {
while (count-- > 0) { while (count-- > 0) {
__asm__("nop"); __asm__("nop");
} }
} }
int main(void) { int main(void) {
clock_setup(); clock_setup();
gpio_setup(); gpio_setup();
while (1) { while (1) {
gpio_toggle(GPIOC, GPIO13); // On Blue Pill: LED is on PC13 gpio_toggle(GPIOC, GPIO13); // On Blue Pill: LED is on PC13
delay(10000000); // Crude delay loop delay(10000000); // Crude delay loop
} }
return 0; return 0;
} }