Hello.
I am using ROCKPI Ubuntu OS on my RockPi E. I am struggling since days to get my Waveshare current hat to run.
Slowly the thought creeps up on me, that maybe it is not possible to use this HAT with my Rockpi E.
The problem. Its seems that the rockpi cant detect my HAT, but i am not sure if i did the activation for I2C correct. I tried to follow this guide: https://wiki.radxa.com/Rockpi4/dev/libmraa
my sttings rn in: /boot/overlay
# Hardware Interface Config
Note: Belows hardware interfaces configuration and dt overlsys are only for kernel 4.4.
Use command 'uname -r' to check current kernel version.
# For more details, check https://wiki.radxa.com/Rockpi4/hardware/devtree_overlays.
# Set "on" to enable the optional hardware interfaces while set "off" to disable.
intfc:pwm0=off
intfc:pwm1=off
intfc:uart2=off
intfc:uart4=off
intfc:spi1=off
intfc:spi2=off
intfc:i2c2=on
intfc:i2c6=on
intfc:i2c7=on
# Devicetree Overlay Enable, uncomment to enable .dtbo under /boot/overlays/.
# EEPROM on I2C2
#intfc:dtoverlay=at24c02
# Serial console on UART2
intfc:dtoverlay=console-on-ttyS2
# Serial console on UART4
#intfc:dtoverlay=console-on-ttyS4
# Dummy spi device on SPI1 for test. Need set: intfc:spi1=on
#intfc:dtoverlay=devspi1
# Dummy spi device on SPI2 for test. Need set: intfc:spi2=on
#intfc:dtoverlay=devspi2
# PCIE running on GEN2 mode
#intfc:dtoverlay=pcie-gen2
# ALLNET 4duino B10/B11 two-coloe-led module on 40-pin Header Pin#35 and Pin#36
#intfc:dtoverlay=two-color-led
# waveshare 3.5inch lcd (B v2) on SPI1. Need set: intfc:uart4=off intfc:spi1=on
#intfc:dtoverlay=spi1-waveshare35b-v2
# waveshare 3.5inch lcd (C) on SPI1. Need set: intfc:uart4=off intfc:spi1=on
#intfc:dtoverlay=spi1-waveshare35c
# spi flash on SPI1. Need set: intfc:uart4=off intfc:spi1=on
#intfc:dtoverlay=spi1-flash
# setting cpu frequency over-2GHz
#intfc:dtoverlay=cpufreq
# Add imx219 camera module support. Need to disable ov5647 camera module.
#intfc:dtoverlay=imx219
# Add w1 on GPIO4_D6 to support devices such as DS18B20.
#intfc:dtoverlay=w1-gpio4-30
# can function of waveshare rs485 can hat on SPI1. Need set: intfc:uart4=off intfc:spi1=on
#intfc:dtoverlay=spi1-mcp2515-can0
# enable radxa display 10hd on ROCK 4C Plus
#intfc:dtoverlay=rock-4c-plus-radxa-display-10hd
# Change USB3_0 node mode to host
#intfc:dtoverlay=rk3399-usb-host
# Change USB3_0 node mode to otg
#intfc:dtoverlay=rk3399-usb-otg
and for /boot/uEnv.txt
GNU nano 4.8 uEnv.txt
verbosity=7
console=ttyS2,1500000n8
overlays=rk3328-i2c1
rootuuid=8be947d8-ab9d-4f59-8f34-92700af76367
fdtfile=rockchip/rk3328-rock-pi-e-rtl8211f.dtb
initrdsize=0x9d31ad
kernelversion=4.4.194-21-rockchip-g12a182552739
initrdimg=initrd.img-4.4.194-21-rockchip-g12a182552739
kernelimg=vmlinuz-4.4.194-21-rockchip-g12a182552739
When i test for I2C i get: rock@rockpie:/boot$ mraa-i2c list
Bus 0: id=01 type=linux default
Thank you