![]() The header files for them can be found at: (install location)/hardware/tools/avr/avr/include/Įven that is not the full story. However even that does not locate things like strcpy. There you would find the Arduino core libraries like: abi.cpp These are in: (install location)/hardware/arduino/avr/cores/arduino ![]() That does not cover the low-level libraries like Tone, Print, main, etc. As at IDE 1.6.4 (Ubuntu version) some are in: (install location)/librariesīut these are the high-level libraries, in particular: Bridge Wire.There are multiple places where you can look. 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.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |