/*******************************************************************************
* Function Name : PendSVC
* Description : This function handles PendSVC exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void PendSVC(void)
{
/* Set the NMI system handler pending bit */
NVIC_SetSystemHandlerPendingBit(SystemHandler_NMI);
/* Toggle GPIO_LED pin 8 */
GPIO_WriteBit(GPIO_LED, GPIO_Pin_8, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIO_LED, GPIO_Pin_8)));
}
/*******************************************************************************
* Function Name : SVCHandler
* Description : This function handles SVCall exception.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SVCHandler(void)
{
/* Set the PSV system handler pending bit */
NVIC_SetSystemHandlerPendingBit(SystemHandler_PSV);
/* Toggle GPIO_LED pin 7 */
GPIO_WriteBit(GPIO_LED, GPIO_Pin_7, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIO_LED, GPIO_Pin_7)));
}
/*******************************************************************************
* Function Name : Demo_Init
* Description : Initializes the demonstration application.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void Demo_Init(void)
{
/* SYSCLK, HCLK, PCLK2 and PCLK1 configuration -----------------------------*/
/* 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_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_16);
/* 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)
{
}
/* Enable USART1 and GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
}
/* Enable GPIOA, GPIOB, GPIOC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
| RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG
| RCC_APB2Periph_AFIO, ENABLE);
/*------------------- Resources Initialization -----------------------------*/
/* ADCCLK = PCLK2/8 */
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
/* Enable DMA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* Enable ADC1 and GPIOC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ALL, ENABLE);
/* If HSE is not detected at program startup */
if(HSEStartUpStatus == ERROR)
{
/* Generate NMI exception */
NVIC_SetSystemHandlerPendingBit(SystemHandler_NMI);
}
}
