This is an I2C implementation for the AT42QT1070 Touch Sensor IC.
The used I2C struct is required to implement embeddedhal::blocking::i2c::Write and embeddedhal::blocking::i2c::WriteRead
rust
let rcc = c.device.RCC.constrain();
let gpiob = c.device.GPIOB.split();
let clocks = rcc
.cfgr
.use_hse(25.mhz())
.sysclk(84.mhz())
.require_pll48clk()
.freeze();
let scl = gpiob.pb8.into_alternate_af4().set_open_drain();
let sda = gpiob.pb9.into_alternate_af4().set_open_drain();
let i2c = I2c::i2c1(c.device.I2C1, (scl, sda), 400.khz(), clocks);
let mut sensor = At42qt1070::new(i2c);
sensor.sync_all().unwrap();