Setup:
Raspberry Pi 3B running (4.19.97-v7) + Base Hat (Interface card for Raspberry Pi)
Connect Grove-LCD RGB Backlight v4.0 into I2C in Base Hat
Execute python code given in the link of Grove-LCD RGB Backlight v4.0 below,
https://wiki.seeedstudio.com/Grove-LCD_RGB_Backlight/
Result:
IOError: [Errno 121] Remote IO Error at 2 lines below
setRGB (0, 128, 64)
bus.write_byte_data(DISPLAY_RGB_ADDR, 0, 0)
Observations
This python code below 2 lines as parameter declration
DISPLAY_RGB_ADDR = 0x62
DISPLAY_TEXT_ADDR = 0x3e
With command, “i2cdetec -y 1”, it exports 04 (address of microcontroller on Base Hat) and 3e (DISPLAY_TEXT_ADDR). But I do not see 62 (DISPLAY_RGB_ADDR ). I think this is the problem.
Then, trying grove_ (tab twice) in CLI, I see grove_1.2inches but I do not think this is the right one.