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Blink Newbie help debug!

Ole

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.

Parents
  • 0

    Ok, here is the code in clear text. I don't get the insert code function: 

    #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;

    }

Reply
  • 0

    Ok, here is the code in clear text. I don't get the insert code function: 

    #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;

    }

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