[参考译文] EVMK2G:I2C_TRANSFER FAIL,从器件 PCA9555,器件0x20,数据传输失败,传输状态为259 This thread has been locked. If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be ...
if (!I2C_transfer(I2Chandle, &i2cTransaction)) { Log_error0("I2C Transaction fail!"); } } 每调用一次Send_Byte函数传数一个字节会产生一个停止信号吗?
=kStatus_Success) // initiate new master mode transfer by sending the START signal, write mode return(-1000000-err); // if I2C fail to start due to timeout state reset should be done but API function I2C_MasterReset() does nothing buffer[0]=I2C_PCIESW_BLKWR; // fill comman...
redriver on the I2C bus usingGPIO_WritePinOutput()immediately after a FlexIO I2C blocking read or write usingFLEXIO_I2C_MasterTransferBlocking()break I2C communication. The level-shifter is disabled before shifting out/in the ACK/NAK and generating the STOP bit c...
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i2cTransaction.readCount = 0; i2cTransaction.slaveAddress = OLED_SLAVEADDR; txBuffer[0] = dat; if (!I2C_transfer(I2Chandle, &i2cTransaction)) { Log_error0("I2C Transaction fail!"); } } 每调用一次Send_Byte函数传数一个字节会产生一个停止信号吗?
i2cTransaction.readCount = 0; i2cTransaction.slaveAddress = OLED_SLAVEADDR; txBuffer[0] = dat; if (!I2C_transfer(I2Chandle, &i2cTransaction)) { Log_error0("I2C Transaction fail!"); } } 每调用一次Send_Byte函数传数一个字节会产生一个停止信号吗?
This is because the the transmission doesn't always fail at a byte boundary; sometimes it will fail halfway through a byte as shown in this screenshot, and if the 'i2c rescue' function changes the SCL pin to a GPIO and toggles it to free up the bus, a write to an u...
The level-shifter is disabled before shifting out/in the ACK/NAK and generating the STOP bit causing the transfer to fail. I believe this is a bug in the FlexIO I2C state-machine, which currently requires using a delay as a work-around. My expectation is ...
I have implemented the SCL line toggle workaround, however I found that this would cause unexpected slave register addresses to be written to. This is because the the transmission doesn't always fail at a byte boundary; sometimes it will fail halfway through a by...