平时常用的串口和SPI配置在这里列出来,以便不时之需,直接拿过来用。同时指出了STM32F1系列和STM32F2系列经常出现的问题。使用的库函数为标准库函数,而非HAL库。
一、串口的配置:
STM32F1系列串口:
void USART1_Config()
{
USART_InitTypeDef USART_InitStructure
GPIO_InitTypeDef GPIO_InitStructure
GPIO_StructInit(&GPIO_InitStructure)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOA,&GPIO_InitStructure)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING
GPIO_Init(GPIOA,&GPIO_InitStructure)
USART_InitStructure.USART_BaudRate = 115200
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx
USART_InitStructure.USART_Parity =USART_Parity_No
USART_InitStructure.USART_StopBits = USART_StopBits_1
USART_InitStructure.USART_WordLength = USART_WordLength_8b
USART_Init(USART1,&USART_InitStructure)
USART_ITConfig(USART1,USART_IT_TC,ENABLE)
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE)
USART_Cmd(USART1,ENABLE)
}
STM32F2系列串口:
void USART1_Config()
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
/**Configure PA0,PA1 for the UART4*/
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_InitStructure.USART_Parity =USART_Parity_No;
USART_InitStructure.USART_StopBits = USART_StopBits_1 ;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_Init(USART1,&USART_InitStructure);
USART_ITConfig(USART1,USART_IT_TC,ENABLE);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_Cmd(USART1,ENABLE);
}
二、SPI的配置:
STM32F1系列SPI:
void InitSPI()
{
SPI_InitTypeDef SPI_InitStructure
GPIO_InitTypeDef GPIO_InitStructure
RCC_APB1PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_5
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOB,&GPIO_InitStructure)
GPIO_PinRemapConfig(GPIO_Remap_SPI1,ENABLE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING
// GPIO_Init(GPIOB,&GPIO_InitStructure)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING
GPIO_Init(GPIOA,&GPIO_InitStructure)
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High
SPI_InitStructure.SPI_CRCPolynomial = 7
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft
SPI_Init(SPI1,&SPI_InitStructure)
SPI_Cmd(SPI1,ENABLE)
}
STM32F2系列SPI配置:
void HAL_SPI_MspInit(void)
{
SPI_InitTypeDef SPI_InitStructure
GPIO_InitTypeDef GPIO_InitStructure
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 |GPIO_Pin_4| GPIO_Pin_5
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOB,&GPIO_InitStructure)
GPIO_PinAFConfig(GPIOB,GPIO_PinSource3,GPIO_AF_SPI1)
GPIO_PinAFConfig(GPIOB,GPIO_PinSource4,GPIO_AF_SPI1)
GPIO_PinAFConfig(GPIOB,GPIO_PinSource5,GPIO_AF_SPI1)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOA,&GPIO_InitStructure)
GPIO_ResetBits(GPIOA,GPIO_Pin_15)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOD,&GPIO_InitStructure)
SPI_Cmd(SPI1,DISABLE)
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b
SPI_InitStructure.SPI_Direction =SPI_Direction_2Lines_FullDuplex
SPI_InitStructure.SPI_Mode = SPI_Mode_Master
SPI_InitStructure.SPI_NSS =SPI_NSS_Soft
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB
SPI_InitStructure.SPI_CRCPolynomial = 7
SPI_Init(SPI1,&SPI_InitStructure)
SPI_Cmd(SPI1,ENABLE)
}
三、CAN通信
STM32F2系列CAN配置:
void CAN_Config()
{
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1,ENABLE);
/**Configure the PA11 PA12 to CAN1*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_CAN1);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_CAN1);
CAN_DeInit(CAN1);
CAN_InitStructure.CAN_ABOM = ENABLE;
CAN_InitStructure.CAN_AWUM = ENABLE;
CAN_InitStructure.CAN_TTCM = DISABLE;
CAN_InitStructure.CAN_NART = ENABLE;
CAN_InitStructure.CAN_RFLM = ENABLE;
CAN_InitStructure.CAN_TXFP = DISABLE;
CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
/**configure baudrate 1M */
CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_8tq;
CAN_InitStructure.CAN_Prescaler =2;
CAN_Init(CAN1, &CAN_InitStructure);
CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_FilterFIFO0;
CAN_FilterInitStructure.CAN_FilterIdHigh= 0x0000;
CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterMode =CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterNumber = 0;
CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
CAN_FilterInit(&CAN_FilterInitStructure);
CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE);
}
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