tFont(u8x8_font_chroma48medium8_r) //Small Font 16 Characters I modified an example to display the internal RP2040 temperature and that worked. I decided to try a simpler graphics library the u8g2/u8x8lib. I was surprised that I was getting a SPI related error when I was attempting to use I2C, but I couldn't figure how to make it go away. I tried the GFX demo for the SSD1306, but that gave me a compile failure. I saw a video clip from Adafruit on Tom's Hardware that showed their new QT Py 2040 running with a SSD1306 I2C OLED display using the Arduino-Pico library. I'm sure that Adafruit will get this working.
I suspect there is some definition missing in the library required to set up the NeoPixel timing for the RP2040. I put a scope probe on the output pin and it never toggled. It compiled and uploaded, but the nothing happened with the NeoPixel ring. Now to try the NeoPixel library from Adafruit. Return a simple incrementing hex value Called when the I2C slave is read from Just stuff the sent bytes into a global the main routine can pick up and useįor (i=0 i These are called in an **INTERRUPT CONTEXT** which means NO serial port Ensure the slave processing is done and print it out To run, connect GPIO0 to GPIO2, GPIO1 to GPIO3 on a single Pico Using both onboard I2C interfaces, have one master and one slave Simple I2C master and slave demo - Earle F. The master just sends a string "pass #" with # incrementing each iteration and the slave responds with an incrementing hex number. I am using the TalkingToMyself example that uses both I2C interfaces, have one master and one slave and send data both ways between them. īut first I am going to use one of the included examples to verify that I got the installation correct. I thought it would be good to try the NeoPixel Ring that I had previously tested using MicroPython Happy Pico Pi Day. Time to try using the Arduino-Pico library to program the RPi Pico using the Arduino IDE.
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