嵌入式单片机开发 STM32HAL库 NRF24L01模块收发数据

#include "wifi.h" __weak void Wait_us(uint16_t time) { UNUSED(time); HAL_Delay(1); } __weak uint8_t NRF_ErrorDeal() //检测到发送失败时调用该函数 { } /** * @brief 将NRF24L01模块句柄参数设置为缺省默认值. * @param hRF NRF24L01模块句柄 */ void NRF_DeInit(RF_HandlerTypeDef *hRF) { #ifndef NRF_SPI hRF->myspi=NULL; #else hRF->myspi=NRF_SPI; #endif #ifndef NRF_CE_PORT hRF->Gpio_CE=NULL; #else hRF->Gpio_CE=NRF_CE_PORT; #endif #ifndef NRF_CE_PIN hRF->Gpio_CE_Pin=NULL; #else hRF->Gpio_CE_pin=NRF_CE_PIN; #endif #ifndef NRF_NSS_PORT hRF->Gpio_SS=NULL; #else hRF->Gpio_SS=NRF_CE_PORT; #endif #ifndef NRF_NSS_PIN hRF->Gpio_SS_Pin=NULL; #else hRF->Gpio_SS_Pin=NRF_NSS_PIN; #endif #ifndef NRF_INT_PORT hRF->Gpio_INT=NULL; #else hRF->Gpio_INT=NRF_INT_PORT; #endif #ifndef NRF_INT_PIN hRF->Gpio_INT_Pin=NULL; #else hRF->Gpio_INT_Pin=NRF_INT_PIN; #endif hRF->AddressSize=3; //传输使用的地�???宽度(hRF->Address_Pipe0) hRF->EnablePipe=NRF24L01_INIT_ENABLE_CHANNEL0; //使能接收通道0 hRF->EnablePipeAck=NRF24L01_INIT_ENABLE_ACK_IN_PIP0; //使能通道0的自动确认 hRF->Max_Repet=10; //最大重发次数（距离过远或受到干扰发送失败时，自动重新发送的次数 hRF->Channel=0; //频道(多个模块互相通信应该使用同一频道) hRF->DeviceMode=NRF24L01_INIT_CONFIG_EN_CRC|NRF24L01_INIT_CONFIG_CRC_ONE_BYTE|NRF24L01_INIT_CONFIG_POWER_ON; //设备工作模式（使用CRC，CRC占用1位，电源开启 hRF->RetryTime=2000; //自动重发间隔时间(us)详细设置要求见技术手册P hRF->Address_Pipe0=0x123456UL; //通道0地址(当接收到数据后，目标会发送ACK确认包到0x123456UL，所以必须设置通道0地址为0x123456UL以实现自动确认) hRF->PackageSize_Pipex[0]=4; //通道0要接收的数据包长为x } //写寄存器 void NRF_WriteReg(RF_HandlerTypeDef *hRF,uint8_t cmd,uint8_t *p_value,uint8_t data_length) { HAL_GPIO_WritePin(hRF->Gpio_SS,hRF->Gpio_SS_Pin,GPIO_PIN_RESET); Wait_us(10); HAL_SPI_Transmit(hRF->myspi,&cmd,1,HAL_MAX_DELAY); HAL_SPI_Transmit(hRF->myspi,p_value,data_length,HAL_MAX_DELAY); Wait_us(10); HAL_GPIO_WritePin(hRF->Gpio_SS,hRF->Gpio_SS_Pin,GPIO_PIN_SET); Wait_us(10); } //读寄存器 void NRF_ReadReg(RF_HandlerTypeDef *hRF,uint8_t cmd,uint8_t *p_value,uint8_t data_length) { HAL_GPIO_WritePin(hRF->Gpio_SS,hRF->Gpio_SS_Pin,GPIO_PIN_RESET); Wait_us(10); HAL_SPI_Transmit(hRF->myspi,&cmd,1,HAL_MAX_DELAY); HAL_SPI_Receive(hRF->myspi,p_value,data_length,HAL_MAX_DELAY); Wait_us(10); HAL_GPIO_WritePin(hRF->Gpio_SS,hRF->Gpio_SS_Pin,GPIO_PIN_SET); Wait_us(10); } /** * @brief 初始化NRF24L01模块 * @param hRF NRF24L01模块句柄 */ void NRF_Init(RF_HandlerTypeDef *hRF) { uint8_t buf; NRF_WriteReg(hRF,NRF24L01_REG_CONFIG|NRF24L01_CMD_REGISTER_W,&(hRF->DeviceMode),1); //配置CONFIG寄存器(使能电源，CRC等) NRF_WriteReg(hRF,NRF24L01_REG_RF_CH|NRF24L01_CMD_REGISTER_W,&(hRF->Channel),1); //设置信道 NRF_WriteReg(hRF,NRF24L01_REG_EN_AA|NRF24L01_CMD_REGISTER_W,&(hRF->EnablePipeAck),1); //配置使能的管道的自动应答 NRF_WriteReg(hRF,NRF24L01_REG_EN_RXADDR|NRF24L01_CMD_REGISTER_W,&(hRF->EnablePipe),1); //配置使能的管道 buf=hRF->AddressSize>>1; NRF_WriteReg(hRF,NRF24L01_REG_SETUP_AW|NRF24L01_CMD_REGISTER_W,&buf,1); //配置地址宽度 buf=(((hRF->RetryTime/250)-1)<<4)|((hRF->Max_Repet)&0x0F); NRF_WriteReg(hRF,NRF24L01_REG_SETUP_RETR|NRF24L01_CMD_REGISTER_W,&buf,1); //配置自动重传间隔和最大计数 buf=hRF->Speed|hRF->Power; NRF_WriteReg(hRF,NRF24L01_REG_RF_SETUP|NRF24L01_CMD_REGISTER_W,&buf,1); //配置传输速率和功率选项 NRF_WriteReg(hRF,NRF24L01_REG_RX_ADDR_P0|NRF24L01_CMD_REGISTER_W,(uint8_t*)&(hRF->Address_Pipe0),hRF->AddressSize); //设置接收地址0 NRF_WriteReg(hRF,NRF24L01_REG_RX_ADDR_P1|NRF24L01_CMD_REGISTER_W,(uint8_t*)&(hRF->Address_Pipe1),hRF->AddressSize); //设置接收地址1 for(uint8_t i=0;i<4;i++) //配置接收地址2~5 NRF_WriteReg(hRF,NRF24L01_CMD_REGISTER_W+NRF24L01_REG_RX_ADDR_P1+i,&hRF->Address_Pipex[i],1); for(uint8_t i=0;i<6;i++) //配置0~5接收通道的数据长度 NRF_WriteReg(hRF,NRF24L01_CMD_REGISTER_W+NRF24L01_REG_RX_PW_P0+i,&hRF->PackageSize_Pipex[i],1); HAL_GPIO_WritePin(hRF->Gpio_CE,hRF->Gpio_CE_Pin,GPIO_PIN_RESET); //默认进入接收模式下的待机模式 } /** * @brief 开启NRF24L01模块接收监听 * @param hRF NRF24L01模块句柄 */ void NRF_StartReceive(RF_HandlerTypeDef *hRF) { uint8_t buf=(hRF->DeviceMode&0xFE)|RF_MODULE_WORKMODE_RECEIVE; NRF_WriteReg(hRF,NRF24L01_REG_CONFIG|NRF24L01_CMD_REGISTER_W,&buf,1); HAL_GPIO_WritePin(hRF->Gpio_CE,hRF->Gpio_CE_Pin,GPIO_PIN_SET); //接收数据 } /** * @brief 通过NRF24L01模块发送数据 * @param hRF NRF24L01模块句柄 * @param source 要发送的数据的首地址 * @param length 要发送的数据长度（最大32字节） * @param DeviceAddress 数据要发往的地址 * @retval 如果发送成功，返回本次重新发送的次数，其它详见REMAND.md */ uint8_t NRF_SendData(RF_HandlerTypeDef *hRF,uint8_t *source,uint8_t length,uint64_t DeviceAddress) { uint8_t buf; HAL_GPIO_WritePin(hRF->Gpio_CE,hRF->Gpio_CE_Pin,GPIO_PIN_RESET); //重置CE电平 Wait_us(10); NRF_WriteReg(hRF,NRF24L01_CMD_REGISTER_W|NRF24L01_REG_TX_ADDR,(uint8_t*)&DeviceAddress,5); NRF_WriteReg(hRF,NRF24L01_CMD_TX_PLOAD_W,source,length); buf=((hRF->DeviceMode)&0xFE)|RF_MODULE_WORKMODE_SEND; //配置为发送模式 NRF_WriteReg(hRF,NRF24L01_CMD_REGISTER_W|NRF24L01_REG_CONFIG,&buf,1); HAL_GPIO_WritePin(hRF->Gpio_CE,hRF->Gpio_CE_Pin,GPIO_PIN_SET); //拉高一次CE启动发送 Wait_us(20); HAL_GPIO_WritePin(hRF->Gpio_CE,hRF->Gpio_CE_Pin,GPIO_PIN_RESET); while(HAL_GPIO_ReadPin(hRF->Gpio_INT,hRF->Gpio_INT_Pin)); //等待发送完成 NRF_ReadReg(hRF,NRF24L01_CMD_REGISTER_R|NRF24L01_REG_STATUS,&buf,1); //读取到STATUS寄存器的值 NRF_WriteReg(hRF,NRF24L01_CMD_REGISTER_W|NRF24L01_REG_STATUS,&buf,1); //写1清除中断标志位 NRF_ReadReg(hRF,NRF24L01_CMD_REGISTER_R|NRF24L01_REG_OBSERVE_TX,&buf,1); //检查发送状态 if(buf&0xF0) //存在丢失的数据包（重发次数大于15），请求错误处理函数 { NRF_ErrorDeal(); NRF_WriteReg(hRF,NRF24L01_REG_RF_CH|NRF24L01_CMD_REGISTER_W,&(hRF->Channel),1); //重置错误计数器（技术手册手册要求P59） } return buf&0x0F; //返回本次发送重传次数 } /** * @brief 读取寄存器，接收数据 * @param hRF NRF24L01模块句柄 * @param buffer 接收数据的缓冲区 * @param buffer 接收到的数据的长度 * @param channel 接收到的数据来自的通道号 * @retval 如果接收成功，返回NRF24L01_MSG_RX_SUCCESS，详见REMAND.md */ int8_t NRF_ReceiveData(RF_HandlerTypeDef *hRF,uint8_t *buffer,uint8_t *length,uint8_t *channel) { uint8_t rec=0,reg=0; NRF_ReadReg(hRF,NRF24L01_CMD_REGISTER_R|NRF24L01_REG_STATUS,&rec,1); //读取到STATUS寄存器的值 NRF_WriteReg(hRF,NRF24L01_CMD_REGISTER_W|NRF24L01_REG_STATUS,&rec,1); //写1清除中断标志位 if(!(rec&0x40)) //数据准备好中断 return NRF24L01_MSG_RX