echo7394 Posted October 31, 2022 Share Posted October 31, 2022 Lepotato with Armbian Jammy armbianmonitor -u is here: https://pastebin.com/UVbLxVH0 Trying to use I2c to drive a SSD1306 type oled screen. All wires have been tested for continuity and are good. Screen is connected as follows: Screen SDA -> Pin 27 Screen SCL -> Pin 28 Screen VCC -> Pin 4 Screen GND -> Pin 6 ive enabled i2c-a and i2c-b via armbian-config i2cdetect -y 0 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- and finally lsmod | grep i2c shows nothing What am I doing wrong here? 0 Quote Link to comment Share on other sites More sharing options...
Da Xue Posted October 31, 2022 Share Posted October 31, 2022 Armbian's I2C overlay probably doesn't have the proper biasing https://github.com/libre-computer-project/libretech-wiring-tool/blob/master/libre-computer/aml-s905x-cc/dt/i2c-b.dts You can either re-hack the overlay or use our images along with the libretech-wiring-tool. 0 Quote Link to comment Share on other sites More sharing options...
echo7394 Posted October 31, 2022 Author Share Posted October 31, 2022 (edited) Edit: problem solved with armbian-add-overlay i2c-b.dts Edited October 31, 2022 by echo7394 1 Quote Link to comment Share on other sites More sharing options...
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