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 SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //设置SPI工作模式:设置为主SPI SPI_InitStructure.SPI_DataSize = SPI_Da
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32; SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; SPI_InitStructure.SPI_CRCPolynomial = 7; ...
注意:所有SPI相关的API都不能在中断服务函数或上下文切换期间使用,因为SPI相关的API都调用了互斥量,可能会造成系统错误 SPI 调用#include "driver/spi_master.h"或#include "driver/spi_slave.h"
.flags=SPI_SLAVE_BIT_LSBFIRST };//initialize SPI slave interfaceerr = spi_slave_initialize(RCV_HOST, &buscfg, &slvcfg, SPI_DMA_CH_AUTO);//can't disable DMA. no comms if you do...spi_slave_transaction_t spi_slave_trans; WORD_ALIGNED_ATTR uint8_t recvbuf[20]; WORD_ALIGNED_ATTR ...
程序使用IO12 IO14 IO15 从spi slave模式读取数据,发送到wifi指定的udp server上。 IO13(MISO)未用,所以写了-1; 程序采用spi_slave.c的例子程序修改的。 问题: 1 一开始运行正常 2 一段时间后(10-20分钟),IO12变为低电平,只有来数据是是高电平,没有数据时是低电平。(正常应该没数据是高电平) 怀疑: ...
First I tried some things with spi_slave_transmit function. As it does not work out as expected I now try to get it to work with: spi_slave_queue_trans followed by spi_slave_get_trans_result. I am not sure how to queue the bytes to send for example 4 bytes separated into 1bytes ...
Hardware: ESP32-C6 (dev board or any custom boards) Software: spi slave exsample Docs says: When an SPI Host is set to 80 MHz or lower frequencies, routing SPI pins via GPIO matrix will behave the same compared to routing them via IO_MUX. But in reality, when MOSI or MISO or SCLK...
ESP32 SPI communication tutorial, SPI Pins, Multiple Buses, example to configure and perform communication with master slave ESP32 boards using ESP-IDF
ESP32-C3是一款基于RISC-V 32位LR架构的低功耗微控制器，具有集成的Wi-Fi和蓝牙功能。它支持SPI（...
I have a project that needs to use 2 SPI peripherals of ESP32S3, one for SPI host and one for SPI slave. It is used to connect an SPI device that has both an SPI host and an SPI slave. The SPI host of the ESP32S3 connects to the SPI slave of the SPI device, and the SPI ...