Peter Heß

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  1. Hello, I configured 2 armbian on sd card and the configuration of the i2c is the same in armbianEnv.txt. Plattform Olimex-Lime2 A20 verbosity=1 logo=disabled console=both disp_mode=1280x1024p50 overlay_prefix=sun7i-a20 rootdev=UUID=194e9f9a-826b-4644-9f2f-4ef388277816 rootfstype=ext4 overlays=i2c1 i2c2 uart3 usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u as you see, I confiugred the overlays. But on one image I get: #image with desktop sudo i2cdetect -l i2c-3 i2c mv64xxx_i2c adapter I2C adapter i2c-1 i2c mv64xxx_i2c adapter I2C adapter i2c-2 i2c mv64xxx_i2c adapter I2C adapter and booting the other image I get # headless image sudo i2cdetect -l i2c-3 i2c mv64xxx_i2c adapter I2C adapter i2c-1 i2c mv64xxx_i2c adapter I2C adapter i2c-2 i2c mv64xxx_i2c adapter I2C adapter i2c-0 i2c sun4i_hdmi_i2c adapter I2C adapter so I get an aditional device for i2c-0. I don't understand what's happening. What could cause this effect? Or better: What must happen, that the i2c-0 does not appear in the list. One more info: The first image has a runing desktop and the second one in headless. Maybe this has something to do with the issue? Can someone give me a pointer to understand this. Btw. both versions work perfekt: i2cdetect -y 2 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: 20 21 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- i2cdetect -y 3 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: 20 21 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- The 0x68 is a RTC which is configured. So everything is OK, but I drives me crazy not to understand what I've done "wrong". Can someone give me a pointer? Thanks for all help.