Posted on November 04, 2013 at 05:13I got the IAR tool chain installed and downloaded the discovery kit firmware package from the page:
http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/PF253215
I open the STM32F0-Discovery-Demo and then in IAR select Project->Download and Debug.
I anticipate the LED's turning on just like when the board was powered up through USB before programming and...... nothing.
So I go through the code step by step in the debugger to try track down the problem and here is what I get:
In main the following is called:
/* Configure LED3 and LED4 on STM32F0-Discovery */
STM_EVAL_LEDInit(LED3);
Which you end up in stm32f0xx_gpio.c at:
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
In this function the following is called:
/* Speed mode configuration */
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (pinpos * 2));
If I hit F11 step into on this line the LED debugger light on the board flashes and nothing further happens. When I hit break I end up at the following:
void HardFault_Handler(void)
{
/* Go to infinite loop when Hard Fault exception occurs */
while (1)
{
}
}
What??? How is it possible that the factory demo code does not work for a simple LED blinking example. I have to assume due to my experience that I am missing something but what is it?
I am at a loss of even what the do next, do I start messing around in the stm32f0xx_gpio.c file? I find it hard to believe that there would be an error with the above code since it is such a basic example that comes pre-installed, so any trouble with this code should have been long sorted out.
I installed IAR in a virtual machine (Windows 7) for testing purposes running on a Windows 8 computer.
