SPI_InitStructure.SPI_FirstBit= SPI_FirstBit_MSB ;/ /SPI_FirstBit_MSB; SPI_InitStructure.SPI_CRCPolynomial=7; SPI_Init (SPI1,&SPI_InitStructure);/ * Enable SPI1.NSSasa GPIO * /SPI_SSOutputCmd (SPI1, ENABLE);/ * Configure PA.4(NSS) --- --- * /GPIO_InitStructure.GPIO_Pin=GPIO_P...
SPI 规定了两个 SPI 设备之间通信必须由主设备 (Master) 来控制次设备 (Slave). 一个 Master 设备可以通过提供 Clock 以及对 Slave 设备进行片选 (Slave Select) 来控制多个 Slave 设备, SPI 协议还规定 Slave 设备的 Clock 由 Master 设备通过 SCK 管脚提供给 Slave 设备, Slave 设备本身不能产生或控制 Cloc...
本成员设置 SPI 的通讯方向,可设置为双线全双工(SPI_Direction_2Lines_FullDuplex),双线只接(SPI_Direction_2Lines_RxOnly),单线只接收(SPI_Direction_1Line_Rx)、单线只发送模(SPI_Direction_1Line_Tx)。 (2) SPI_Mode 本成员设置 SPI 工作在主机模式(SPI_Mode_Master)或从机模式(SPI_Mode_Slave ),这两...
SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB; SpiHandle.Init.NSS = SPI_NSS_SOFT; SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;#ifdef MASTER_BOARD SpiHandle.Init.Mode = SPI_MODE_MASTER;#else SpiHandle.Init.Mode = SPI_MODE_SLAVE;#endif /* MASTER_BOARD */ if(HAL_SPI_Init(&SpiHandle) !
SPI通信通常需要四根线,比串口的多两根: 1、MISO(Master Input Slave Output):主设备数据输入,从设备输出; 2、MOSI(Master Ouput Slave Input):主设备输出,从设备输入; 3、SCLK(Serial Clock):时钟信号,由主设备产生 4、CS/SS(Chip Select/Slave Select):从设备使能,由主设备控制(高或低电位) ...
timer_sys+=spi_dt[0]; if(timer_sys>0.1){timer_sys=0; slave_send(3);//系统状态 }else{ if(send_flag==1){ send_flag=0; slave_send(1);//姿态 }//发送数据重新赋值 else{ send_flag=1; slave_send(2); } } spi_tx_cnt_send=0; ...
SPI是(Serial Peripheral Interface)是由Motorola公司开发的一种通用数据总线; 有多根通信线:SCK(Serial Clock串行时钟线),MOSI(Master Output Slave Input主机输出从机输入),MISO(Master Output Slave Input从机输出主机输入),SS(Slave Select片选); 不同的芯片有不同的名字规定:例如MOSI,很多芯片会写成DI,MISO写成...
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;SPI_InitStructure.SPI_NSS = SPI_NSS_Hard;SPI_...
I suspect I had some sort of wiring issue. I added a breadboard into the mix and stuck some LEDs in, and somehow after connecting everything up, both master and slave worked correctly. I did change the code around to use some of the STM example for SPI, but that was before the...
STM32 Blue Pill SPI Slave as a Receiver in Polling Mode Code A main.c file gets generated. Inside the main.c file, make sure the following code is part of your script by including the lines of code given below. #include "main.h" ...