STM32F1系列之常用外设说明
1、RCC相关:
APB2启动时钟项:
RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB,
RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE,
RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1,
RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1,
RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3,
RCC_APB2Periph_ALL
APB2启动函数:
RCC_APB2PeriphClockCmd(XX,ENABLE);
APB1启动时钟项:
RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4,
RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7,
RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3,
RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4,
RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2,
RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP,
RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_ALL
APB1启动函数:
RCC_APB2PeriphClockCmd(XX,ENABLE);
AHB启动时钟项:
RCC_AHBPeriph_DMA1
RCC_AHBPeriph_DMA2
RCC_AHBPeriph_SRAM
RCC_AHBPeriph_FLITF
RCC_AHBPeriph_CRC
RCC_AHBPeriph_FSMC
RCC_AHBPeriph_SDIO
AHB启动函数:
RCC_AHBPeriphClockCmd (XX,ENABLE);
2、GPIO相关:
GPIO模式:
GPIO_Mode_AIN:模拟输入 GPIO_Mode_IN_FLOATING:浮空输入
GPIO_Mode_IPD:下拉输入 GPIO_Mode_IPU:上拉输入
GPIO_Mode_Out_OD:开漏输出 GPIO_Mode_Out_PP:推挽输出
GPIO_Mode_AF_OD:复用开漏输出 GPIO_Mode_AF_PP:复用推挽输出
GPIO速度:
GPIO_Speed_2MHz
GPIO_Speed_10MHz
GPIO_Speed_50MHz
GPIO引脚声明:
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_x; x:1~15或者all
GPIO初始化函数:
GPIO_Init(GPIOx, &GPIO_InitStructure); x:A~G
注:需要定义GPIO结构体变量,GPIO_InitTypeDef GPIO_InitStructure;
3、ADC相关
最好需要重新初始化:ADC_DeInit(ADCx);
ADC工作模式选择:
ADC_Mode_Independent:独立工作
ADC_Mode_RegInjecSimult:混合同步+注入同步
ADC_Mode_RegSimult_AlterTrig:混合同步+交替触发
ADC_Mode_InjecSimult_FastInterl:混合同步+快速交替
ADC_Mode_InjecSimult_SlowInterl:混合同步+慢速交替
ADC_Mode_InjecSimult:注入同步
ADC_Mode_RegSimult:规则同步
ADC_Mode_FastInterl:快速交替
ADC_Mode_SlowInterl:慢速交替
ADC_Mode_AlterTrig:交替触发
通过ADC_InitStructure.ADC_Mode = XX进行赋值
ADC扫描使能:
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC连续 /单次模式选择:
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC转换控制方式:
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//有软件控制转换
ADC数据对齐方式:ADC_DataAlign_Right:右对齐 / ADC_DataAlign_Right:左对齐
ADC_InitStructure.ADC_DataAlign =XX
ADC转换通道数:
ADC_InitStructure.ADC_NbrOfChannel = X // X=1~16
ADC初始化函数:
ADC_Init(ADCx, &ADC_InitStructure);
注:在开始要定义结构体变量 ADC_InitTypeDef ADC_InitStructure
是否使能ADCx DMA :
ADC_DMACmd(ADCx, ENABLE);
使能ADCx:
ADC_Cmd(ADCx, ENABLE);
初始化ADC1校准寄存器:
ADC_ResetCalibration(ADCx);
检测ADC1校准寄存器初始化是否完成:
while(ADC_GetResetCalibrationStatus(ADCx));
开始校准ADC1:
ADC_StartCalibration(ADCx);
检测是否完成校准:
while(ADC_GetCalibrationStatus(ADCx));
ADC1转换软件启动:
ADC_SoftwareStartConvCmd(ADCx, ENABLE);
4、DMA相关:
复位通道:
DMA_DeInit(DMAy_Channelx);//复位DMAy通道x,y=1时,x=1~7;y=2时,x=1~5
定义外设基地址,全局变量:
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;//地址自己定义
如:#define ADC1_DR_Address ((u32)0x4001244C)
定义DMA存储器地址,全局变量u32
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValue; //定义DMA通道存储器地址
如:volatile unsigned short int ADC_ConvertedValue[8];
DMA外设方向:
DMA_InitStructure.DMA_DIR = XX;
DMA_DIR_PeripheralSRC:外设为数据传输的来源,DMA_DIR_PeripheralDST:外设为数据传输的目的地
DMA传输数量寄存器值,即缓存大小,单位由MemoryDataSize或PeripheralDataSize决定:
DMA_InitStructure.DMA_BufferSize = x;
//定义DMA缓冲区大小x,如8通道ADC,则x就为8
DMA外设地址寄存器变不变:
DMA_InitStructure.DMA_PeripheralInc = x;
DMA_PeripheralInc_Disable:外设地址寄存器不变 DMA_PeripheralInc_Enable:外设地址寄存器递增
DMA内存地址寄存器变不变:
DMA_InitStructure.DMA_MemoryInc = X;
DMA_MemoryInc_Disable:内存地址寄存器不变 DMA_MemoryInc_Enable:内存地址寄存器递增
外设数据宽度:
DMA_InitStructure.DMA_PeripheralDataSize = X;
DMA_PeripheralDataSize_Byte 数据宽度为8位
DMA_PeripheralDataSize_HalfWord 数据宽度为16位
DMA_PeripheralDataSize_Word 数据宽度为32位
存储器数据宽度:
DMA_InitStructure.DMA_MemoryDataSize = X;
DMA_MemoryDataSize_Byte 数据宽度为8位
DMA_MemoryDataSize_HalfWord 数据宽度为16位
DMA_MemoryDataSize_Word 数据宽度为32位
模式选择:
DMA_InitStructure.DMA_Mode =x;
DMA_Mode_Circular: 循环模式
DMA_Mode_Normal:正常模式
通道软件优先级设置:
DMA_InitStructure.DMA_Priority =x;
DMA_Priority_VeryHigh 最高优先级
DMA_Priority_High 高优先级
DMA_Priority_Medium 中优先级
DMA_Priority_Low 低优先级
DMA内存到内存的传输使能:
DMA_InitStructure.DMA_M2M = x
DMA_M2M_Enable:使能
DMA_M2M_Disable:未使能
DMA初始化函数:
DMA_Init(DMAy_Channelx , &DMA_InitStructure);
DMA通道使能函数:
DMA_Cmd(DMAy_Channelx , ENABLE); //使能DMA通道1
注:在开始要定义结构体变量 DMA_InitTypeDef DMA_InitStructure
5、NVIC相关:
优先级组设定:
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_x);
NVIC_PriorityGroup_0: 0 bits for pre-emption priority
4 bits for subpriority
NVIC_PriorityGroup_1: 1 bits for pre-emption priority
3 bits for subpriority
NVIC_PriorityGroup_2: 2 bits for pre-emption priority
2 bits for subpriority
NVIC_PriorityGroup_3: 3 bits for pre-emption priority
1 bits for subpriority
NVIC_PriorityGroup_4: 4 bits for pre-emption priority
0 bits for subpriority
设置中断:
NVIC_InitStructure.NVIC_IRQChannel =x;
ADC1_2_IRQn = 18, /*!< ADC1 and ADC2 global Interrupt*/
USB_HP_CAN1_TX_IRQn = 19, /*!< USB Device High Priority or CAN1 TX Interrupts */
USB_LP_CAN1_RX0_IRQn = 20, /*!< USB Device Low Priority or CAN1 RX0 Interrupts */
CAN1_RX1_IRQn = 21, /*!< CAN1 RX1 Interrupt*/
CAN1_SCE_IRQn = 22, /*!<CAN1 SCE Interrupt*/
EXTI9_5_IRQn = 23, /*!< External Line[9:5] Interrupts*/
TIM1_BRK_IRQn = 24, /*!< TIM1 Break Interrupt*/
TIM1_UP_IRQn = 25, /*!< TIM1 Update Interrupt*/
TIM1_TRG_COM_IRQn = 26, /*!< TIM1 Trigger and Commutation Interrupt*/
TIM1_CC_IRQn = 27, /*!< TIM1 Capture Compare Interrupt*/
TIM2_IRQn = 28, /*!< TIM2 global Interrupt */
TIM3_IRQn = 29, /*!< TIM3 global Interrupt */
TIM4_IRQn = 30, /*!< TIM4 global Interrupt*/
I2C1_EV_IRQn = 31, /*!< I2C1 Event Interrupt*/
I2C1_ER_IRQn = 32, /*!< I2C1 Error Interrupt*/
I2C2_EV_IRQn = 33, /*!< I2C2 Event Interrupt */
I2C2_ER_IRQn = 34, /*!< I2C2 Error Interrupt */
SPI1_IRQn = 35, /*!< SPI1 global Interrupt*/
SPI2_IRQn = 36, /*!< SPI2 global Interrupt*/
USART1_IRQn = 37, /*!< USART1 global Interrupt*/
USART2_IRQn = 38, /*!< USART2 global Interrupt*/
USART3_IRQn = 39, /*!< USART3 global Interrupt*/
EXTI15_10_IRQn = 40, /*!< External Line[15:10] Interrupts*/
RTCAlarm_IRQn = 41, /*!< RTC Alarm through EXTI Line Interrupt*/
USBWakeUp_IRQn = 42, /*!< USB Device WakeUp from suspend through EXTI Line Interrupt */
TIM8_BRK_IRQn = 43, /*!< TIM8 Break Interrupt */
TIM8_UP_IRQn = 44, /*!< TIM8 Update Interrupt\*/
TIM8_TRG_COM_IRQn = 45, /*!< TIM8 Trigger and Commutation Interrupt
TIM8_CC_IRQn = 46, /*!< TIM8 Capture Compare Interrupt*/
ADC3_IRQn = 47, /*!< ADC3 global Interrupt*/
FSMC_IRQn = 48, /*!< FSMC global Interrupt */
SDIO_IRQn = 49, /*!< SDIO global Interrupt\*/
TIM5_IRQn = 50, /*!< TIM5 global Interrupt*/
SPI3_IRQn = 51, /*!< SPI3 global Interrupt*/
UART4_IRQn = 52, /*!< UART4 global Interrupt */
UART5_IRQn = 53, /*!< UART5 global Interrupt */
TIM6_IRQn = 54, /*!< TIM6 global Interrupt */
TIM7_IRQn = 55, /*!< TIM7 global Interrupt */
DMA2_Channel1_IRQn = 56, /*!< DMA2 Channel 1 global Interrupt*/
DMA2_Channel2_IRQn = 57, /*!< DMA2 Channel 2 global Interrupt */
DMA2_Channel3_IRQn = 58, /*!< DMA2 Channel 3 global Interrupt*/
DMA2_Channel4_5_IRQn = 59, /*!< DMA2 Channel 4 and Channel 5 global Interrupt*/
设置抢占优先级:
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =X; //抢占优先级 X
设置子优先级为:
NVIC_InitStructure.NVIC_IRQChannelSubPriority =X; //抢占优先级 X
使能中断:
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能
NVIC初始化函数:
NVIC_Init(&NVIC_InitStructure);
注:在开始时需要定义结构体变量NVIC_InitTypeDef NVIC _InitStructure;
6、USART相关:
USART波特率选择:
USART_InitStructure.USART_BaudRate =XX; //波特率为XX bps
数据位位数选择:
USART_InitStructure.USART_WordLength = USART_WordLength_Xb;
//X为8或者9,即8位或者9位数据位
停止位位数选择:
USART_InitStructure.USART_StopBits = USART_StopBits_1; //停止位1位
#define USART_StopBits_1 ((uint16_t)0x0000)
#define USART_StopBits_0_5 ((uint16_t)0x1000)
#define USART_StopBits_2 ((uint16_t)0x2000)
#define USART_StopBits_1_5 ((uint16_t)0x3000)
有无校验位选择:
USART_InitStructure.USART_Parity = USART_Parity_No; //无校验位
#define USART_Parity_No ((uint16_t)0x0000)
#define USART_Parity_Even ((uint16_t)0x0400)
#define USART_Parity_Odd ((uint16_t)0x0600)
有无硬件流控选择:
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
//无硬件流控
#define USART_HardwareFlowControl_None ((uint16_t)0x0000)
#define USART_HardwareFlowControl_RTS ((uint16_t)0x0100)
#define USART_HardwareFlowControl_CTS ((uint16_t)0x0200)
#define USART_HardwareFlowControl_RTS_CTS ((uint16_t)0x0300)
模式选择:
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式
#define USART_Mode_Rx ((uint16_t)0x0004)
#define USART_Mode_Tx ((uint16_t)0x0008)
配置串口参数函数:
USART_Init(USARTx, &USART_InitStructure);
USARTx 可选:USART1, USART2, USART3, UART4 or UART5
注:在开始时需要定义结构体变量USART_InitTypeDef USART_InitStruct;
使能接收中断:
USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE);
使能发送缓冲空中断:
USART_ITConfig(USARTx, USART_IT_TXE, ENABLE);
使能发送完成中断:
USART_ITConfig(USARTx, USART_IT_TC, ENABLE)
使能USART:
USART_Cmd(USARTx, ENABLE);