Main
#include \
typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure;
//#define countof(a) (sizeof(a) / sizeof(*(a))) u32 CCR1_Val=1000;
USART_InitTypeDef USART_InitStructure;
//u8 NbrOfDataToTransfer1 ; //u8 NbrOfDataToRead1;
volatile TestStatus TransferStatus1 = FAILED; ErrorStatus HSEStartUpStatus;
void RCC_Configuration(void); void GPIO_Configuration(void); void NVIC_Configuration(void); void Uart_config(void);
void TIM2_config(void);
extern void Com0_Communication(void);
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);
int main(void) {
#ifdef DEBUG debug(); #endif
/* System Clocks Configuration */ RCC_Configuration();
/* NVIC configuration */ NVIC_Configuration();
/* Configure the GPIO ports */ GPIO_Configuration();
Uart_config();
TIM2_config(); while (1)
{
Com0_Communication(); } }
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_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_9);
/* 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) { }
}
/* TIM2 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* Enable USART1, GPIOA, GPIOA and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA RCC_APB2Periph_AFIO, ENABLE); }
void GPIO_Configuration(void) {
GPIO_InitTypeDef GPIO_InitStructure; /* Configure USART1 Rx (PA.10) as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART1 Tx (PA.09) as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); }
void NVIC_Configuration(void) {
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */ NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); #else /* VECT_TAB_FLASH */ /* Set the Vector Table base location at 0x08000000 */ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
| #endif
/* Configure the NVIC Preemption Priority Bits配置优先级组 */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the TIM2 gloabal Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); }
/* USART1 configuration ------------------------------------------------------*/ /* USART configured as follow: - BaudRate = 9600 baud - Word Length = 8 Bits - One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals) - Receive and transmit enabled */
void Uart_config(void) {
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; /* Configure USART1 */
USART_Init(USART1, &USART_InitStructure); /* Enable USART1 Receive and Transmit interrupts */ USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); /* Enable the USART1 */
USART_Cmd(USART1, ENABLE); }
=
void TIM2_config(void)
{
/* Time base configuration[初始化时间基单元] */ TIM_TimeBaseStructure.TIM_Period = 0xffff;//周期值
TIM_TimeBaseStructure.TIM_Prescaler = 0;//时钟的预分频数=0x0000
TIM_TimeBaseStructure.TIM_ClockDivision = 0;//TIM_ClockDivision 配置时钟分割 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* Prescaler configuration [配置TIM的预分频数]*/
TIM_PrescalerConfig(TIM2, 36, TIM_PSCReloadMode_Immediate);//TIM2,36分频，预分频数立即载入
/* Output Compare Timing Mode configuration: Channel1 [配置输出比较模式：通道1]*/ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;//TIM输出比较计时模式 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//输出允许 TIM_OCInitStructure.TIM_Pulse = CCR1_Val;//脉冲CCR1_Val
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//极性HIGH
TIM_OC1Init(TIM2, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable);//关闭TIM2在CCR1寄存器上的预载入寄存器
/* TIM IT enable [使能TIM2比较中断]*/ TIM_ITConfig(TIM2, TIM_IT_CC1, ENABLE); /* TIM2 enable counter */ TIM_Cmd(TIM2, ENABLE);
}
#ifdef DEBUG
void assert_failed(u8* file, u32 line)
{
/* User can add his own implementation to report the file name and line number, ex: printf(\
/* Infinite loop */ while (1) { } }
#endif