While(1 < Wire.available()) // loop through all but the lastĬhar c = Wire.read() // receive byte as a character this function is registered as an event, see setup() function that executes whenever data is received from master It does not change the value of the data or add any new data. Int x = Wire.read() // receive byte as an integer Wire library - Master Reader/Slave Sender The Wire library has no concept of data types, and only permits sending data as bytes. Serial.begin(9600) // start Serial for output Nick Gammon came up with a fantastic C++ template to allow sending data, regardless of data types. While(Wire.available()) // slave may send less than requestedĬhar c = Wire.read() // receive a byte as character Wire.requestFrom(2, 6) // request 6 bytes from slave device #2 SEND DATA TO A REGISTER USING WIRE LIBRARY SERIAL ![]() ![]() Int x = Wire.Thanks for the help! I am already using the Wire.read() command, unfortunately. I didn't include the code in my question in an attempt for brevity, which in retrospect was probably confusing. My read code is as follows, and initiates after the ackcheck in my wire.endTransmission above replies with a 0.Īnyone have any thoughts? I'm just plain stuck. The problem may be that the LTC1760 needs an actual repeated start bit. The endTransmission() function, with no argument, does a stop and then a start which will not work here.īelow is some working sample code that will repeatedly read this register. ![]() SEND DATA TO A REGISTER USING WIRE LIBRARY CODE Wire.write(byte(reg)) // sets register pointer Uint8_t reg = 0x04 // BatterySystemInfo() register Uint8_t address = 0x0A // 0x14, but Wire i2c adressing uses the high 7 bits so shift right Let me know if you still have any trouble. Wire.endTransmission(false) // repeated start include include // Return values of endTransmission in. Wire.requestFrom(address, numBtyes) // request 2 bytes from slave device #112 new values to the register the I2C loop mode is in error write(busAddress. ![]() SEND DATA TO A REGISTER USING WIRE LIBRARY CODE.SEND DATA TO A REGISTER USING WIRE LIBRARY SOFTWARE.SEND DATA TO A REGISTER USING WIRE LIBRARY SERIAL.
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