STM32各种函数的基本配置.docx

STM32各种函数的基本配置（功能是摄像头采集数据SD存储）/*#include stm32f4_discovery.h#include stm32f4xx_conf.h uint32_t Gb_TimingDelay;void Delay(uint32_t nTime);void main( ) SysTick_Config(SystemCoreClock / 1000); /设置systemtick 一毫秒中断 RCC-AHB1ENR |= 0x00000008; /使能GPIOD 时钟 RCC-APB2ENR |= (1MODER &= 0x00FFFFFF; /设置PD12,13,14,15 输出 GPIOD-MODER |= 0x55000000; GPIOD-OTYPER &= 0xFFFF0FFF; /设置PD12,13,14,15 推挽输出 GPIOD-OSPEEDR &= 0x00FFFFFF; /PD12,13,14,15 速度100m GPIOD-OSPEEDR |= 0xff000000; SYSCFG-CMPCR = 0x00000001; /使用IO 补偿单元， /当GPIO 速度超过50M 的时候要考虑使用此设置 GPIOD-PUPDR &= 0x00FFFFFF; /PD12,13,14,15 无上拉无下拉 GPIOD-BSRRH = 0xf000; /reset register GPIOx_BSRRH, write only /set register GPIOx_BSRRL, write only while(1) GPIOD-BSRRH = 0xf000; GPIOD-BSRRL = 0x1000; Delay(100); GPIOD-BSRRH = 0xf000; GPIOD-BSRRL = 0x1000BSRRH = 0xf000; GPIOD-BSRRL = 0x1000BSRRH = 0xf000; GPIOD-BSRRL = 0x1000BSRRL = GPIO_Pin_12; while(1) / /GPIOD-ODR = GPIO_Pin_12; /GPIO_ToggleBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin); GPIO_ToggleBits(GPIOD, GPIO_Pin_12); /Insert a delay Delay(10); void Delay(uint32_t nTime) Gb_TimingDelay = nTime; while(Gb_TimingDelay != 0);void SysTick_Handler(void) if (Gb_TimingDelay != 0x00) Gb_TimingDelay-; */*#include stm32f4_discovery.h#include stm32f4xx_conf.h#include stm32f4xx_rcc.huint32_t xiande=0;uint32_t Gb_TimingDelay;void Delay(uint32_t nTime);void main( ) /Configure the system clocks RCC_ClocksTypeDef RCC_Clocks; /SysTick end of count event each 10ms SysTick_Config(SystemCoreClock / 1000); /设置systemtick 一毫秒中断 /Initialize LEDs mounted on STM32F4-Discovery board STM_EVAL_LEDInit(LED4); STM_EVAL_LEDInit(LED3); STM_EVAL_LEDInit(LED5); STM_EVAL_LEDInit(LED6); /Turn on LED4 and LED5 STM_EVAL_LEDOn(LED4); STM_EVAL_LEDOn(LED5); RCC_GetClocksFreq(&RCC_Clocks); xiande = RCC_Clocks.SYSCLK_Frequency; xiande = RCC_Clocks.HCLK_Frequency; xiande = RCC_Clocks.PCLK1_Frequency; xiande = RCC_Clocks.PCLK2_Frequency; while(1) /Toggle LED3 and LED6 STM_EVAL_LEDToggle(LED3); STM_EVAL_LEDToggle(LED6); /Insert a delay Delay(10); void Delay(uint32_t nTime) Gb_TimingDelay = nTime; while(Gb_TimingDelay != 0);void SysTick_Handler(void) if (Gb_TimingDelay != 0x00) Gb_TimingDelay-; */#include stm32f4_discovery.h#include stm32f4xx_conf.h#include stm32f4xx_rcc.h/*定义USART6接受的数据存储变量*/uint16_t usart6_get_data;uint32_t Gb_TimingDelay;void Delay(uint32_t nTime);void GPIO_Config(void);void USART_Config(void);void USART6_Puts(char * str);void NVIC_Config(void);void Delay(uint32_t nCount);void main() /*在主函数main之前通过调用启动代码运行了SystemInit函数，而这个函数位于system_stm32f4xx.c”。 程序运行起始于启动文件的第175行（LDR R0, =SystemInit）。sys时钟为HSE频率/PLL_M*PLL_N/PLL_P， 定义HSE为25M，则sys时钟频率为168M */ SysTick_Config(SystemCoreClock / 1000); /设置systemtick 一毫秒中断 /GPIO_Config(); USART_Config(); NVIC_Config(); STM_EVAL_LEDInit(LED3); STM_EVAL_LEDInit(LED4); STM_EVAL_LEDInit(LED5); STM_EVAL_LEDInit(LED6); /Turn on LED4 and LED5 STM_EVAL_LEDOn(LED3); while (1) STM_EVAL_LEDOff(LED3); /setbits使能IO，当前下指输出 （此时为灭） Delay(100); STM_EVAL_LEDToggle(LED4); STM_EVAL_LEDToggle(LED5); STM_EVAL_LEDToggle(LED6); /*以下为查询方式 USART6_Puts(Hello Wrold!n); GPIO_ResetBits(GPIOG,GPIO_Pin_6); /Resetbits屏蔽IO，当前下指不输出（此时为亮） Delay(0xFFFFFF); while (USART_GetFlagStatus(USART6,USART_FLAG_RXNE) = RESET) /usart6_get_data = USART_ReceiveData(USART6); USART6_Puts(Get Data From USART6:); USART_SendData(USART6,USART_ReceiveData(USART6); while (USART_GetFlagStatus(USART6, USART_FLAG_TXE) = RESET) /USART6_Puts(&usart6_get_data); USART6_Puts(rn); */ /*Function: void Delay(uint32_t nCount) Description: 延时函数 Input: 延时的时间 Output:无 Return:无 */ void Delay(uint32_t nTime) Gb_TimingDelay = nTime; while(Gb_TimingDelay != 0);void SysTick_Handler(void) if (Gb_TimingDelay != 0x00) Gb_TimingDelay-; /*Function: void GPIO_Config(void) Description: GPIO配置函数 Input: 无 Output:无 Return:无 */ void GPIO_Config(void) /*定义了一个GPIO_InitStructure的结构体，方便一下使用 */ GPIO_InitTypeDef GPIO_InitStructure; /* 初始化GPIOG时钟*/ RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG , ENABLE);/使能GPIOG时钟（时钟结构参见“stm32图解.pdf”） /*仅设置结构体中的部分成员：这种情况下，用户应当首先调用函数PPP_SturcInit(.) 来初始化变量PPP_InitStructure，然后再修改其中需要修改的成员。这样可以保证其他 成员的值（多为缺省值）被正确填入。 */ GPIO_StructInit(&GPIO_InitStructure); /* 初始化GPIOG的Pin_6为推挽输出*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; /指定第六引脚 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; /模式为输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; /频率为快速 GPIO_Init(GPIOG, &GPIO_InitStructure); /调用IO初始化函数/*Function: void USART_Config(void) Description: USART配置函数 Input: 无 Output:无 Return:无 */ void USART_Config(void) GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStruct; RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6, ENABLE); /开启USART6时钟 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); /开启GPIOC时钟 GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_USART6);/这相当于M3的开启复用时钟？只配置复用的引脚， GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_USART6);/ /* Connect USART pins to AF7 */ /*配置GPIOC*/ GPIO_StructInit(&GPIO_InitStructure); /缺省值填入 /*配置GPIOC_Pin6为TX输出*/ GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF; /设置为复用，必须为AF，OUT不行 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC,&GPIO_InitStructure); /*配置GPIOC_Pin7为RX输入*/ GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF; /这也必须为复用，与M3不同！ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC,&GPIO_InitStructure); /*IO引脚复用功能设置，与之前版本不同*/ /*配置USART6*/ USART_StructInit(&USART_InitStructure); USART_InitStructure.USART_BaudRate =115200; 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; USART_Init(USART6, &USART_InitStructure); USART_ClockStructInit(&USART_ClockInitStruct); /之前没有填入缺省值，是不行的 USART_ClockInit(USART6, &USART_ClockInitStruct); USART_ITConfig(USART6, USART_IT_RXNE, ENABLE); /使能 USART6中断 USART_Cmd(USART6, ENABLE); /使能 USART6 void NVIC_Config() NVIC_InitTypeDef NVIC_InitStructure; NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); /嵌套优先级分组为 1 NVIC_InitStructure.NVIC_IRQChannel = USART6_IRQn; /嵌套通道为USART6_IRQn NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; /抢占优先级为 0 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; /响应优先级为 0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /通道中断使能 NVIC_Init(&NVIC_InitStructure);/*Function: void USART6_Puts(char * str) Description: USART6发送数据 Input: 待发送数据指针 Output:无 Return:无 */void USART6_Puts(char * str) while (*str) USART_SendData(USART6, *str+); /* Loop until the end of transmission */ while (USART_GetFlagStatus(USART6, USART_FLAG_TXE) = RESET); /详见英文参考的521页，当TXE被置起时，一帧数据传输完成 /*名称：USART6中断服务程序 *作用：USART6收到数据后产生中断，并将收到的内容发回给上位机 */void USART6_IRQHandler(void) if (USART_GetITStatus(USART6, USART_IT_RXNE) != RESET) /判断为接收中断 USART_SendData(USART6, USART_ReceiveData(USART6); /发送收到的数据 STM_EVAL_LEDOn(LED3); /点亮LED，起到中断指示作用 #include stm32f4_discovery.h#include stm32f4xx_conf.h#include stm32f4xx_rcc.h#include #include stm32f4xx_spi.h#include ff.h#include diskio.h#include SPI_MSD0_Driver.h#include stm32f4xx_dcmi.h#include stm32f4xx_i2c.h#include dcmi_ov9655.h#include camera_api.h#define Hang 120#define Lie 160/-FATFS fs; FRESULT res; DIR dirs;FIL file;FILINFO finfo;UINT br;unsigned char txtBuf200;char spfline30;/-/ Private typedef - / Private define - / Private macro - / Private variables - RCC_ClocksTypeDef RCC_Clocks;OV9655_IDTypeDef OV9655_Camera_ID;uint8_t cameraBuf40;extern Camera_TypeDef Camera;extern ImageFormat_TypeDef ImageFormat;extern uint8_t ValueMax;extern const uint8_t *ImageForematArray;/unsigned long int theMap20000=0;unsigned char theMapHang*Lie*2=0;volatile unsigned char biaozhi=0;volatile unsigned char biaozhi2=0;volatile unsigned char DmaTransOver=0;/-/定义USART6接受的数据存储变量 uint16_t usart6_get_data;uint32_t Gb_TimingDelay;/-/Function: /Description: /Input: /Output:无 /Return:无 /-/-/Function: 系统通过uart用printf函数时，需要重载的函数/Description: /Input: /Output:无 /Return:无 /-int fputc(int ch, FILE *f) /Place your implementation of fputc here /Loop until the end of transmission while (USART_GetFlagStatus(USART2, USART_FLAG_TC) = RESET); / write a character to the USART USART_SendData(USART2, (uint8_t) ch); return ch;/-/Function: void Delay(uint32_t nCount) /Description: 延时函数 /Input: 延时的时间 /Output:无 /Return:无 /-void Delay(uint32_t nTime) Gb_TimingDelay = nTime; while(Gb_TimingDelay != 0);void SysTick_Handler(void) if (Gb_TimingDelay != 0x00) Gb_TimingDelay-; /-/Function: void GPIO_Config(void) /Description: GPIO配置函数 /Input: /Output:无 /Return:无 /-void GPIO_Config(void) /定义了一个GPIO_InitStructure的结构体，方便一下使用 GPIO_InitTypeDef GPIO_InitStructure; / 初始化GPIOG时钟 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG , ENABLE);/使能GPIOG时钟（时钟结构参见“stm32图解.pdf”） /仅设置结构体中的部分成员：这种情况下，用户应当首先调用函数PPP_SturcInit(.) /来初始化变量PPP_InitStructure，然后再修改其中需要修改的成员。这样可以保证其他 /成员的值（多为缺省值）被正确填入。 GPIO_StructInit(&GPIO_InitStructure); /初始化GPIOG的Pin_6为推挽输出 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; /指定第六引脚 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; /模式为输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; /频率为快速 GPIO_Init(GPIOG, &GPIO_InitStructure); /调用IO初始化函数/-/Function: void USART_Config(void) /Description: USART配置函数 /Input: /Output:无 /Return:无 /-void USART_Config(void) /需要初始化的三个结构体 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStruct; /-各种时钟配置 /-使能模块时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); /开启USART6时钟 /-使能GPIO引脚时钟 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE); /-配置串口模块的功能 /-选择模块利用引脚 GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_USART2);/这相当于M3的开启复用时钟？只配置复用的引脚， GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_USART2); /-配置GPIOC引脚 /-缺省值填入 GPIO_StructInit(&GPIO_InitStructure); /-配置GPIOC_Pin6为TX输出 GPIO_InitStructure.GPIO_Pin=GPIO_Pin_5; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF; /设置为复用，必须为AF，OUT不行 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD,&GPIO_InitStructure); /-配置GPIOC_Pin7为RX输入 GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF; /这也必须为复用，与M3不同！ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD,&GPIO_InitStructure); /- /IO引脚复用功能设置，与之前版本不同 /-配置USART6 /-缺省值填入 USART_StructInit(&USART_InitStructure); USART_InitStructure.USART_BaudRate =115200; 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; USART_Init(USART2, &USART_InitStructure); /-缺省值填入 USART_ClockStructInit(&USART_ClockInitStruct); USART_ClockInit(USART2, &USART_ClockInitStruct); /配置中断，使能相应模块 USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); /使能 USART6中断 USART_Cmd(USART2, ENABLE); /使能 USART6 /-/Function: 各种中断配置函数/Description: /Input: /Output:无 /Return:无 /-void NVIC_Config() NVIC_InitTypeDef NVIC_InitStructure; /串口的 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); /嵌套优先级分组为 1 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; /嵌套通道为USART6_IRQn NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; /抢占优先级为 0 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; /响应优先级为 0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /通道中断使能 NVIC_Init(&NVIC_InitStructure); /DCMI的 NVIC_InitStructure.NVIC_IRQChannel = DCMI_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /DMA_DCMI的 NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream1_IRQn; NVIC_InitStructure.NVIC_IRQ