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 复制 voidSingle_WriteI2C(uint8_t REG_Address,uint8_t REG_data){uint8_t TxData[2]={REG_Address,REG_data};while(HAL_I2C_Mas...
is ongoing. */while(HAL_I2C_GetState(&I2cHandle) != HAL_I2C_STATE_READY) { }// request 6 bytes from device/*##-4- Put I2C peripheral in reception process ###*/while(HAL_I2C_Master_Receive_DMA(&I2cHandle, I2C_ADDRESS <<1, (uint8_t*)aRxBuffer,6) != HAL_OK) {/* Error_Hand...
after it generates a START condition and from master to slave, if an arbitration loss or a Stop generation occurs, allowing multi-master capability. We’ll be creating a handful of example projects to operate the I2C peripheral in each one of all the 4 modes mentioned above. ...
hi2c1.Instance->CR1 &= ~I2C_CR1_SWRST; HAL_Delay(2); /* 3. Enable the I2C peripheral by setting the PE bit in I2Cx_CR1 register */ MX_I2C1_Init(); __HAL_I2C_ENABLE(&hi2c1); HAL_Delay(2); #ifdef I2C_TEST printf("I2CResetBus\r\n"); #endif hi2c1.ErrorCode = HAL_I2C...
我们不使用例子中的 HAL_I2C_Master_Transmit 和 HAL_I2C_Master_Receive,这两个函数适用于两个 I2C 器件之间进行数据传输...在此我们写入数据用的 24C02 的 Page Write 命令,每次写入 8个字节的数据,然后存储器写入地址加 8。...下面是写入数据的波形,0xA0 是器件地址,0x28 是 24C02 内部存储器地址...
HAL_I2C_Master_Receive(&hi2c1, (uint16_t)tmp, (uint8_t *)buf, len, 10000); 1. 2. 3. 4. 先发送写,和要读取的寄存器地址,然后再发送读,然后从机就会发送对应的寄存器数据读取到buf 总结:用HAL_I2C_Mem_Write和Read更方便(I2C_MEMADD_SIZE_8BIT) ...
The I2C slave updates its read buffer with a status packet in response to the accepted command.In this example, a host PC running the Bridge Control Panel (BCP) software is used as the I2C master. LED control is implemented using a TCPWM resource (configured as PWM). The intensity of ...
The problem arises when a device has an internal memory space that is larger than 256 bytes or registers; for example, any modestly sized I2C EEPROM. Such a device will expect to receive two or more bytes to represent the starting memory address. My own device (an ADAU1701 audio DSP) has...
HAL_I2C_Master_Receive_IT 282 21.2.15 HAL_I2C_Slave_Transmit_IT 282 21.2.16 HAL_I2C_Slave_Receive_IT 283 21.2.17 HAL_I2C_Master_Transmit_DMA 283 21.2.18 HAL_I2C_Master_Receive_DMA 283 21.2.19 HAL_I2C_Slave_Transmit_DMA 284 21.2.20 HAL_I2C_Slave_Receive_DMA 284 21.2.21 HAL_I2C_...
开发者ID:TemcoLijun,项目名称:GateServer,代码行数:34,代码来源:i2c.c 示例5: HAL_ISR_FUNCTION ▲点赞 1▼ HAL_ISR_FUNCTION(port1Isr, P1INT_VECTOR)#endif{ HAL_ENTER_ISR();#endifPxIFG =0; PxIF =0; spiRdyIsr =1;#if!defined HAL_SPI_MASTERif(spiTxLen ==0) ...