Hi Forum.
I'm new to ARM, but have experience with AVR. I'm just trying to make a Hello World with blinky LEDs. I have this board:
https://forum.micropython.org/viewtopic.php?t=3086
So ok, everything seems to be setup right. I can compile and also program the Flash, it verify's with no errors. There are two onboard LEDs connected to A6 and A7 (it says so in the link, but I have also double checked). I can't get them to blink or flash.
This is my code:
#include "stm32f407xx.h" void myDelay(int times){ volatile int i, j; for (i = 0; i < times; ++i) { j++; } } void ini(void){ RCC -> AHB1ENR |= RCC_AHB1ENR_GPIOAEN; //enable GPIO clock for AHB og RCC GPIOA -> MODER |= GPIO_MODER_MODER6_0 |GPIO_MODER_MODER7_0; GPIOA -> OTYPER &= ~(GPIO_OTYPER_OT_7|GPIO_OTYPER_OT_6); GPIOA -> OSPEEDR |= GPIO_OSPEEDER_OSPEEDR7_1 | GPIO_OSPEEDER_OSPEEDR6_1; //High speed 10 GPIOA -> PUPDR &= ~(GPIO_PUPDR_PUPDR7 | GPIO_PUPDR_PUPDR6); } int main(void) { void ini(); while(1) { GPIOA -> BSRRL |= 0x000000C0; //Bit Set 6 & 7 myDelay(200000); GPIOA -> BSRRL |= 0x00C00000; //Bit 6 & 7 reset myDelay(200000); } return 0; }
I hope someone can help me se what I'm doing wrong?
Best Regards
Ole.