Posted on May 17, 2011 at 13:40Thank you for your reply STOne-32
I'm sorry that I didn't post complete main by mistake because I put all of the config content in a separate file and just call them from main.c. below is the full main.c which turns on LED. my main.c currently calls config for Clock, GPIO and interrupt. interrupt for DMA1CH1 getting value from ADC1 is enable now but I'm only clearing the IT flags in interrupt functions void ADC1_2_IRQHandler(void). I don't think that interrupt are a problem here, so I just exclude them to prevent distraction, but I'll post them all if you think it's necessary.
#include ''stm32f10x.h''
#include ''stm32f10x_gpio.h''
int main(void){
RCC_Configuration();
__disable_irq();
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOF, &GPIO_InitStructure);
GPIO_SetBits(GPIOF, GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9);
NVIC_Configuration();
DMA1_Configuration();
__enable_irq();
while(1);
}
void RCC_Configuration(void){
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS) {
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */
/* FLASH_Latency_0 SYSCLK <= 24 MHz
* FLASH_Latency_1 SYSCLK <= 48 MHz
* FLASH_Latency_2 SYSCLK <= 72 MHz
*/
FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK/1 = 72 MHz */
// UART1, SPI1, Timer1, ADC1, ADC2, GPIOA-GPIOE
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 = 36 MHz */
// CAN, USB, I2C1, I2C2, UART2, UART3, SPI2, Timer2, Timer3, Timer4
RCC_PCLK1Config(RCC_HCLK_Div2);
/* ADCCLK = PCLK2/4 = 14 MHz */
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
/* Configure PLLs *********************************************************/
/* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
RCC_PREDIV2Config(RCC_PREDIV2_Div5);
RCC_PLL2Config(RCC_PLL2Mul_8);
/* Enable PLL2 */
RCC_PLL2Cmd(ENABLE);
/* Wait till PLL2 is ready */
while (RCC_GetFlagStatus(RCC_FLAG_PLL2RDY) == RESET);
/* PLL configuration: PLLCLK = (PLL2 / 5) * 9 = 72 MHz */
RCC_PREDIV1Config(RCC_PREDIV1_Source_PLL2, RCC_PREDIV1_Div5);
RCC_PLLConfig(RCC_PLLSource_PREDIV1, RCC_PLLMul_9);
/* PPL3 configuration: PLL3CLK = (HSE / 5) * 11 = PLL3_VCO = 110 MHz */
RCC_PLL3Config(RCC_PLL3Mul_11);
/* Enable PLL3 */
RCC_PLL3Cmd(ENABLE);
/* Wait till PLL3 is ready */
while (RCC_GetFlagStatus(RCC_FLAG_PLL3RDY) == RESET);
/* Configure I2S clock source: On Connectivity-Line Devices, the I2S can be clocked by PLL3 VCO instead of SYS_CLK in order to guarantee higher precision */
RCC_I2S3CLKConfig(RCC_I2S3CLKSource_PLL3_VCO);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08);
} // end if
// Enables the Clock Security System.
RCC_ClockSecuritySystemCmd(ENABLE);
/* Enable peripheral clocks --------------------------------------------------*/
/* Enable DMA clock */
//RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_DMA2, ENABLE);
/* Enable ADC1, ADC3, TIM1 clock */
//RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2 | RCC_APB2Periph_ADC3 | RCC_APB2Periph_TIM1, ENABLE);
/* Enable GPIOA, GPIOB, GPIOC, GPIOG, GPIOF clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOG | RCC_APB2Periph_GPIOF, ENABLE);
}
