How to enable i2c?

[xin]

[Godzil]

What do you want to do with i2c?

[xin]

Modify the parameters of AXP223

Newly purchased batteries have different maximum charging voltages

我想修改 AXP223的参数
因为我买的新电池充电电压不同

[p3dt]

Please check my new thread on this topic:

HowTo: GPIO access, I2C, Kernel Building

Hi, it’s Paul again Intro I found some time over the last days to play with the GPIOs and I2C. And got all of them to work, as well as I2C support: [00-i2c-setup] WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-0. I will probe address range 0x03-0x77. Continue? [Y/n] 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- …