调用 HAL_I2C_Master_Seq_Transmit_IT来发送数据。已调用HAL_I2C_GetState来检查外设的状态并等待状态显示为“BUSY”。一旦外设完成数据传输,就会调用HAL_I2C_Master_Seq_Receive_IT来接收来自 I2c 设备的数据。同样,HAL_I2C_GetState检查外设的状态并在数据接收成功完成后退出该功能。 使用HAL_I2C_DeInit实现的a2b_...
HAL_I2C_Master_Transmit,为【主机阻塞方式普通发送】 HAL_I2C_Mem_Read_DMA,为【主机DMA方式读从机内存】 HAL_I2C_Slave_Seq_Transmit_DMA,为【从机序列DMA方式发送】 【主从机】决定是谁发送SCL 【阻塞/中断/DMA】决定单片机内部存取数据方式,影响CPU和总线使用率 【收/发】决定数据传输方向 参考大佬对HAL库S...
HAL_I2C_Master_Transmit: 这个函数用于主机设备(通常是单片机)向从机设备发送数据。主机设备负责控制I2C...
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;向从机发送数据:HAL_I2C_Master_Transmit(&hi2c1,(0X0A<<1)|0x00,I2CBuf_TxData,6,1000);...
这段代码是STM32 HAL库中I2C通信的一个函数,用于等待I2C总线上的TXIS(发送数据寄存器空)标志位。这个...
if (HAL_I2C_Slave_Seq_Transmit_IT(&hi2c1, (uint8_t *)aTxBuffer, TXBUFFERSIZE, I2C_FIRST_AND_LAST_FRAME) != HAL_OK) { /* Transfer error in transmission process */ Error_Handler(); } } else { /*##- Put I2C peripheral in reception process ###*/ if (HAL_I2C_Slave_Seq_Receiv...
HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions); HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32...
Sets I2C transfer IRQ handler to I2C_Master_ISR_DMA; Checks if data size is larger than 255 bytes and uses reload mode. Sets I2C DMA complete callback to I2C_DMAMasterTransmitCplt; Starts DMA using HAL_DMA_Start_IT() Configures I2C registers using I2C_TransferConfig() HAL driver will han...
HAL_I2C_Master_Seq_Transmit_IT or HAL_I2C_Master_Seq_Receive_IT or HAL_I2C_Master_Seq_Transmit_DMA or HAL_I2C_Master_Seq_Receive_DMA with option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME. Then usage of this option I2C_LAST_FRAME_NO_STOP at the last Transmit or ...