![]() May only contain lowercaseĬharacters, digits and hyphens, and can be at most 24 characters long by default, or 31Ĭharacters long if name_add_mac_suffix is false.įriendly_name ( Optional, string): This is the name sent to the frontend. Should always be unique in your ESPHome network. Name ( Required, string): This is the name of the node. Wire.# Example configuration entry esphome : name : livingroom comment : Living room ESP32 controller esp32 : board : nodemcu-32s Configuration variables: ¶ Wire.write(val++) // sends potentiometer value byte Wire.write(byte(0x55)) // sends instruction byte Wire.beginTransmission(44) // transmit to device #44 (0x2c) Wire.begin() // join i2c bus (address optional for master) If I reduce the transmission to just the step #2 instruction single data byte, the same result is shown. The 2 data bytes are not being transmitted. The only byte I can see in my oscilloscope is just the first one (please see picture below). ![]() variable 1 test byte constantly incremented.first the I2C protocol device address - Start / 8 + 1bits.work fine using standard Arduino libraries, the mentioned example doesn't work for me in my working NANO board. Although several I2C devices like DS3231 RTC, etc. I am an experienced assembler and C/C++ programmer and hardware developer/designer. I just copied and reduced the code below a little from the example. Written by Nicholas Zambetti and Shawn Bonkowski, demonstrates use of the Wire library. I am starting to study the Wire library (no previous Arduino Wire library experience), I read some info taken from here.Īs you all know, this really simple example changes the value of a AD5171 digital potentiometer via I2C.
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