echo7394 Posted October 31, 2022 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
Da Xue Posted October 31, 2022 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
echo7394 Posted October 31, 2022 Author Posted October 31, 2022 (edited) Edit: problem solved with armbian-add-overlay i2c-b.dts Edited October 31, 2022 by echo7394 1 Quote
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