然后设置 i2c_algorithm 中的 master_xfer 函数。最后通过 i2c_add_numbered_adapter或 i2c_add_adapter...
One with the I2C scanner example (https://github.com/stm32duino/Arduino_C ... canner.ino) with speed set to 400kHz and one with your code that I've cleaned and use the default Wire instance which are already on PB7/PB6: Code: Select all #include <Wire.h> #define SLAVE_ADR 0x...
使用HAL_I2C_Mem_Write等于先使用HAL_I2C_Master_Transmit传输第一个寄存器地址,再用HAL_I2C_Master_Transmit传输写入第一个寄存器的数据。可以传输多个数据 代码语言:javascript 代码运行次数:0 运行 AI代码解释 voidSingle_WriteI2C(uint8_t REG_Address,uint8_t REG_data){uint8_t TxData[2]={REG_Address,RE...
We know that the I2C is a synchronous communication, so both the master and slave should be doing the same thing at the same time. For example, if the slave is sending the 4th bit of the data, then the master should also be looking for the 4th bit of the data. ...
因为DMA从功能上来说独立于内核之外，实现内存(SRAM,SDRAM等)到内存，内存到外设(I2C,SPI等), 外设(...
voidHAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *I2cHandle) { /* Toggle LED2: Transfer in transmission process is correct */ BSP_LED_Toggle(LED2); //add user code 2 john } 可以实现I2C接收消息的异步,效率也是更高。 ST提供I2C接口有: ...
HAL_I2C_Master_Transmit works, HAL_I2C_Master_Tran... STM32 MCUs Products Secure Boot and Read Out Protection STM32 MCUs Products Find More Solutions Unanswered Threads Discrepancy in RCC_AHB4ENR Address for STM32H7A3RG... LWIP + FreeRTOS Ping Issues LPTIM2 not counting when clocked...
I2C_GenerateSTART(I2C1, ENABLE); /* Test on I2C1 EV5, Start trnsmitted successfully and clear it */ timeout = I2C_TIMEOUT_MAX; /* Initialize timeout value */ while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)) { /* If the timeout delay is exeeded, exit with error code...
HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi21, uint16_t DevAddress, uint8_t *pData, uint16_...
= 0) { stm32_i2c_master_mode_end(dev); k_sem_take(&data->device_sync_sem, K_FOREVER); is_timeout = true; } ... but the semaphore isn't timing out?! In fact, the semaphore believes nobody is waiting: (gdb) print i2c_stm32_dev_data_0.device_sync_sem $379 = { wait_q...