tuyaos-sw-i2c

name	tuyaos/sw-i2c
description	TuyaOS software (bit-bang) I2C built on tkl_gpio, from driver_gpio demo. 软件I2C、bit-bang、tdd_sw_i2c、GPIO模拟I2C。
when_to_use	Use when hardware I2C is unavailable or user wants GPIO-bitbang I2C on TuyaOS.
id	tuyaos-sw-i2c
surfaces	["embedded"]
tags	["i2c","sw-i2c","gpio","tuyaos"]

TuyaOS Software I2C

Demo: …/examples/driver_gpio/example_driver_sw_i2c.c + tdd_sw_i2c.c/.h

APIs

Function	Role
tdd_sw_i2c_init(port, i2c_pin)	bind SCL/SDA GPIOs
tdd_sw_i2c_xfer(port, msg)	transfer
tdd_sw_i2c_deinit(port)	release

Uses tkl_gpio_* underneath. Copy the demo files into the app (or link sources via local.mk) and set SCL/SDA pins for the board.

Prefer hardware I2C (i2c/SKILL.md) when the SoC port is free.