SPI是串行外设接口（Serial Peripheral Interface）的缩写，是一种高速的，全双工，同步的通信总线，它被...
HAL_SPI_Transmit()是否丢弃接收到的数据? 、、 假设我有两个带有全双工SPI连接的STM板(一个是主板,一个是从板),假设在通信的每一端都使用HAL_SPI_Transmit()和HAL_SPI_Receive()。当主程序调用HAL_SPI_Transmit()时,SPI的本质意味着当它在MOSI行上时钟第一个字节时,它同时在MISO行上计时一个字节。然后,...
= HAL_OK) { /* Initialization Error */ Error_Handler(); } #ifdef MASTER_BOARD /* SPI block is enabled prior calling SPI transmit/receive functions, in order to get CLK signal properly pulled down. Otherwise, SPI CLK signal is not clean on this board and leads to error...
阻塞HAL_SPI_Transmit() 或HAL_SPI_Receive() 但绝不会同时调用HAL_SPI_TransmitReceive() 。然而,库会将任何调用转换 Oo一笑2022-12-13 06:52:31 STM32L4SPI读数据,前3个字节永远是0 以前用NXP的LPC系列,最近第一次用STM32就面对HAL库,操作一个SPI接口的A/D芯片和SPIFlash,用了HAL_SPI_Receive和HAL_SP...
启动),如果我使用函数HAL_SPI_Transmit_DMA() 而不是使用HAL_SPI_TransmitReceive_DMA(),则DMA2SPI流停止工作。例如,如果要传输 lalajie2022-12-19 07:55:57 如何指示HAL库发回spi_buf_out的内容呢? ;HAL_SPI_TransmitReceive_DMA(&hspi2,spi_buf_out,spi_buf_in,SPI_SIZE);在逻辑分析仪上,当 pi 发送...
最近使用STM32L476 驱动NRF2401 无线模块,spi的设定采用cube生成后,移值了原子哥的F407HAL库驱动NRF2401例程,修改相应引脚后发现check通不过,即检测不到该模块的存在。经过排查发现是在HAL_SPI_TransmitReceive(&SPI1_Handler,&buffer,&Rdbuf,1, 1000);这出现了问题 发现不论buffer是什么值,Rdbuf返回的值都为9。
I stripped out various MCU initialization for simplicity. I had made an attempt to use the IT version of TransmitRecieve at an earlier time, but it didn't successfully transmit. If I use the USER button on my master several times it does manage to activate the appropriate lights on...
SPI is a very specific interface and slave can only transmit if the master transmits. You have to transmit dummy data in order to receive something. So you cant send 4 bytes and receive 7. You will need send as much data as it is needed. ...
= HAL_OK) { /* Initialization Error */ Error_Handler(); } #ifdef MASTER_BOARD /* SPI block is enabled prior calling SPI transmit/receive functions, in order to get CLK signal properly pulled down. Otherwise, SPI CLK signal is not clean on this board and leads ...
HAL_SPI_TransmitReceive函数的超时参数到底是什么? 我想了解 HAL_SPI_Transmit、HAL_SPI_Receive 和 HAL_SPI_TransmitReceive 函数的超时参数。 2022-12-19 07:40:18 【C应用】基于HAL库的SPI读FLASH 基于STM32F407利用HAL库使用SPI对W25Q128进行读写实验。 资料下载 佚名 2021-12-22 19:22:43 ...