(count > MAX_DMABUF_SIZE ) { return DWT_ERROR; } #endif stat = decamutexon() ; //PORT_SPI_CLEAR_CS_FAST // give extra time for SPI slave device port_SPI3_set_chip_select(); HAL_SPI_TransmitReceive_DMA(&hspi3, headerBuffer, tmp_buf, count); while(DMA_RX_CH-...
=HAL_SPI_TransmitReceive(hspi,pTxData,pRxData,Size,Timeout);SPI_DeSelect(ch);return ret;}HAL fgdfdzdg2022-09-21 14:51:05 「正点原子NANO STM32开发板资料连载」第二十四章SPI实验 节的同事接受一个字节,发送和接收同时完成,所以HAL也提供了一个发送接收同一函数:HAL_StatusTypeDefHAL_SPI_TransmitReceive...
(12 = 4 + 7 + one byte which is the first received byte, which is a dummy one because the Slavestarts transmitting after the 1st byte is sent by theMaster). 2) How doesuint16_t Sizevariable used in theTransmitReceivefunction? If I want to send 4 bytes and simultaneously r...