Hello,
I am trying to toggle the Port C Pin 0 using the debugger (No eval board attached) for the device STM32F407 with the following code:
#include "stm32f4xx_hal.h" void delay() { for(int i = 0; i < 100000; i++); } int main (void) { while(1) { GPIOC->MODER = 0x01; GPIOC->BSRR ^= 1; delay(); } }
When stepping thorough the code, the GPIO in peripherals Window does not show any change to the values of MODER and BSSR. Its always 0 and does not work for other ports also. What is wrong?
>> .. debugger (No eval board attached) ..
You mean the simulator?
Yes, running simulator from debug options, Debug tab, use simulator.
Use real hardware, See "Simulated Features" in page below to understand why what you're doing doesn't work the way you imagine.
http://www.keil.com/dd/chip/6103.htm