Posted on November 10, 2011 at 07:35the ctrl registers remain at reset values but idr 0 an 1 goto low(0). is there something wrong with my source?
//
//
//
//STM32 BUTTON TEST
//by T. Herring tre2020067@gmail.com
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
//INCLUDE FILES
//these file should already be include in project space and do not need to be
//defined again.
//////////////////////////////////////////////////////////////
/*
#include stm32f10x_vector.c
#include stm32f10x_conf.h
#include stm32f10x_it.c
#include stm32f10x_lib.c
*/
#include ''stm32f10x_lib.h''
////////////////////////////////////////////////////////////
//FUNCTION PROTOTYPES
////////////////////////////////////////////////////////////
//void clockconfig();
void gpio_flash();
void Clk_Init (void)
{
//RESET CLOCK CONFIG
RCC_DeInit();
// 1. Clocking the controller from internal HSI RC (8 MHz)
// RCC_HSICmd(ENABLE);
// wait until the HSI is ready
//while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
//RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
// 2. Enable ext. high frequency OSC
RCC_HSEConfig(RCC_HSE_ON);
// wait until the HSE is ready
while(RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET);
// 2-1. Set system clock dividers
#ifdef EMB_FLASH
// 5. Init Embedded Flash
// Zero wait state, if 0 < HCLK 24 MHz
// One wait state, if 24 MHz < HCLK 56 MHz
// Two wait states, if 56 MHz < HCLK 72 MHz
// Prefetch buffer
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
// Flash wait state
FLASH_SetLatency(FLASH_Latency_2);
// Half cycle access
FLASH_HalfCycleAccessCmd(FLASH_HalfCycleAccess_Disable);
#endif // EMB_FLASH
RCC_HCLKConfig(RCC_SYSCLK_Div1);
RCC_PCLK2Config(RCC_HCLK_Div1);
RCC_PCLK1Config(RCC_HCLK_Div2);
RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
// 3. Init PLL
RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9); // 72MHz
RCC_PLLCmd(ENABLE);
// wait until the PLL is ready
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
// 5. Clock system from PLL
//RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/*//WAIT FOR PLLCLK TO STABLILZE
while(RCC_GetSYSCLKSource() != 0x08)
{
}
*/
}
void main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
//SETUP DEBUG
#ifdef DEBUG
debug();
#endif
//CONFIGURE CLOCKS
Clk_Init();
// GPIO Init
// Enable GPIO clock and release reset
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE);
// GPIO_DeInit(GPIOC);
// Assign PE6 to LED
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_5
| GPIO_Pin_6;
GPIO_Init(GPIOE, &GPIO_InitStructure);
// Enaable Swithches on PC0 and PC1
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_Init(GPIOC, &GPIO_InitStructure);
//APP MUST NEVER EXIT MAIN FUNCTION. STRANGENESS WILL OCCUR..
while(1)
{
if(GPIOC->IDR != 0){
GPIOE->BRR = 0x60;
}
GPIOE->BSRR = 0x60;
}
}
void gpio_flash()
{
int i;
for(i=0;i<300000;i++){
GPIOE->BSRR = 0x60;
}
for(i=0;i<30000;i++){
GPIOE->BRR = 0x60;
}
//end gpio_flash
}
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* Input : - file: pointer to the source file name
* - line: assert_param error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf(''Wrong parameters value: file %s on line %d\r\n'', file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
