The flag combination "SPI_XFER_BEGIN | SPI_XFER_END" is a common use case of spi_xfer, and it can easily cause an already long line (spi_xfer takes 5 parameters) to go over the 80 character limit. define SPI_XFER_ONCE to be a shorter version of the above flag combination. Cc: To...
The flag combination "SPI_XFER_BEGIN | SPI_XFER_END" is a common use case of spi_xfer, and it can easily cause an already long line (spi_xfer takes 5 parameters) to go over the 80 character limit. define SPI_XFER_ONCE to be a shorter version of the above flag combination. Cc: To...
if(spi_xfer(spi1, bitlen, dout, din,SPI_XFER_BEGIN | SPI_XFER_END) != 0) { printf("3 Error during SPI transaction\n"); return; } 可以确定的是mcu侧的spi配置和通信没有问题。因为我通过内核的spi接口,读写mcu数据都正常。 读数据还尝试过将din和dou全部赋值,让spi_xfer调用底层的omap3_trx...
struct completion xfer_completion; size_t max_dma_len; int (*optimize_message)(struct spi_message *msg); int (*unoptimize_message)(struct spi_message *msg); int (*prepare_transfer_hardware)(struct spi_controller *ctlr); int (*transfer_one_message)(struct spi_controller *ctlr, struct spi...
ret= spi_xfer(spi, cmd_len *8, cmd, NULL, flags);if(ret) { debug("SF: Failed to send command (%zu bytes): %d\n", cmd_len, ret); }elseif(data_len !=0) { ret= spi_xfer(spi, data_len *8, data_out, data_in, SPI_XFER_END);if(ret) ...
typedef struct __SPI_HandleTypeDef { SPI_TypeDef *Instance; SPI_InitTypeDef Init; uint8_t *pTxBuffPtr; uint16_t TxXferSize; __IO uint16_t TxXferCount; uint8_t *pRxBuffPtr; uint16_t RxXferSize; __IO uint16_t RxXferCount; uint32_t CRCSize; void (*RxISR)(struct __SPI_HandleType...
structspi_transfer*xfer);boolqueued;//是否采用系统的序列化传输structkthread_workerkworker;//序列化传输时的线程workerstructtask_struct*kworker_task;//序列化传输的线程structkthread_workpump_messages;//序列化传输时的处理函数spinlock_tqueue_lock;//序列化传输时的queue_lockstructlist_headqueue;//序列化...
# 发送 [0x55,0xAA], 接收的数据应该也是 [0x55,0xAA]try:whileTrue:resp = spi.xfer2([0x55,0xAA])print(BytesToHex(resp))time.sleep(1) except KeyboardInterrupt:spi.close() if__name__ =='__main__':print("List of enabled ...
先按照PDK的例子进行初始化spi_claim,然后用spi_xfer持续发送数据,但是用示波器观察CLK,CS0,CS1,MISO,MOSI都没有任何波形。 函数原型如下,采用的FPGA的CS spi_claim ( uint32_t cs, uint32_t freq ) { uint32_t scalar; // PLIBSPILOCK() //wy ...
(hspi->ErrorCode, HAL_SPI_ERROR_ABORT);//}//}///* Abort the SPI DMA Tx channel *///if (hspi->hdmatx != NULL)//{///* Set the SPI DMA Abort callback ://will lead to call HAL_SPI_ErrorCallback() at end of DMA abort procedure *///hspi->hdmatx->XferAbortCallback = ...