For example, using 3-pin half-duplex SPI instead of 4-pin full-duplex SPI saves me 1 very precious GPIO pin. It should be noted that not all SPI slave devices support half duplex mode, and most devices will not mention half-duplex mode in the datasheets. Generally, a SPI slave device ...
// Set Tx mode to stop Rx clock result = SPI_ReceiveData8(SPI1); return result; } 参考:HOWTO: Use STM32 SPI half duplex mode – Digital Me (ba0sh1.com)本文作者:齐刃 本文链接:https://www.cnblogs.com/neriq/p/14888324.html 版权声明:本作品采用知识共享署名-非商业性使用-禁止演绎 ...
*/__STATIC_INLINE uint32_tLL_SPI_IsActiveFlag_TXE(SPI_TypeDef *SPIx);/* 检测TXE是否置位 */__STATIC_INLINE uint32_tLL_SPI_IsActiveFlag_RXNE(SPI_TypeDef *SPIx);/* 检测RXNE是否置位 */__STATIC_INLINE uint32_tLL_SPI_IsActiveFlag_MODF(SPI_TypeDef *SPIx); __STATIC_INLINEvoidLL_SPI_C...
STM32F3产品技术培训-03.SPI模块
最终得出的结论,SPI的半双工模式有毛病。 STM32G4勘误手册里有句话: master receive-only mode (simplex receive or half-duplex bidirectional receive phase) and anSCK strobing edgehas not occurred since the transition of the RXNE flag from low to high. ...
7 SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //设置SPI单向或者双向的数据模式:SPI设置为双线双向全双工 8 SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //设置SPI工作模式:设置为主SPI 9 SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b; //设置SPI的数据大小:SPI发送接收8位...
半字(Half Word):是由两个连续的字节组成,通常表示为16位二进制数。半字可存储0-65535的无符号整数,或者-32768到32767的有符号整数。半字访问意味着每次访问两个字节。 字(Word):是由四个连续的字节组成,通常表示为32位二进制数。字可存储0-4294967295的无符号整数,或者-2147483648到2147483647的有符号整数。字...
单工模式(Simplex Mode):在单工模式下,串口只能在一个方向上传输数据,即数据只能单向发送或接收。在单工模式下,无法同时发送和接收数据。这种模式的应用场景较为有限,通常只用于简单的数据采集或监测任务。 半双工模式(Half Duplex Mode):在半双工模式下,串口可以在两个方向上传输数据,但不能同时进行。也就是说,数...
mode:double buffer mode:注意事项 DCMI_DMA无异常时中断回调顺序single buffer mode:1)DMA传输一半中断回调:XferCpltCallback 需要在HAL_DCMI_Start_DMA()后手动添加赋值 stm32 嵌入式硬件 数据 初始化 赋值 S3C6410 SPI全双工读写流程分析(原创)【转】 S3C6410 SPI全双工读写流程分析一、SPI控制器...
4 x I2C Fast mode plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus, wakeup from stop 5 x USART/UARTs (ISO 7816 interface, LIN, IrDA, modem control) 1 x LPUART 4 x SPIs, 4 to 16 programmable bit frames, 2 x with multiplexed half duplex I2S interface ...