Module f3::examples::_08_lsm303dlhc [−][src]
Interfacing the on-board LSM303DLHC (accelerometer + compass)
#![deny(unsafe_code)] #![deny(warnings)] #![no_std] #![no_main] #[macro_use(entry, exception)] extern crate cortex_m_rt as rt; extern crate cortex_m; extern crate f3; extern crate panic_semihosting; use cortex_m::asm; use f3::hal::i2c::I2c; use f3::hal::prelude::*; use f3::hal::stm32f30x; use f3::Lsm303dlhc; use rt::ExceptionFrame; entry!(main); fn main() -> ! { let p = stm32f30x::Peripherals::take().unwrap(); let mut flash = p.FLASH.constrain(); let mut rcc = p.RCC.constrain(); // TRY the other clock configuration let clocks = rcc.cfgr.freeze(&mut flash.acr); // let clocks = rcc.cfgr.sysclk(64.mhz()).pclk1(32.mhz()).freeze(&mut flash.acr); // The `Lsm303dlhc` abstraction exposed by the `f3` crate requires a specific pin configuration // to be used and won't accept any configuration other than the one used here. Trying to use a // different pin configuration will result in a compiler error. let mut gpiob = p.GPIOB.split(&mut rcc.ahb); let scl = gpiob.pb6.into_af4(&mut gpiob.moder, &mut gpiob.afrl); let sda = gpiob.pb7.into_af4(&mut gpiob.moder, &mut gpiob.afrl); let i2c = I2c::i2c1(p.I2C1, (scl, sda), 400.khz(), clocks, &mut rcc.apb1); let mut lsm303dlhc = Lsm303dlhc::new(i2c).unwrap(); let _accel = lsm303dlhc.accel().unwrap(); let _mag = lsm303dlhc.mag().unwrap(); let _temp = lsm303dlhc.temp().unwrap(); // when you reach this breakpoint you'll be able to inspect the variables `_accel`, `_mag` and // `_temp` which contain the accelerometer, compass (magnetometer) and temperature sensor // readings asm::bkpt(); loop {} } exception!(HardFault, hard_fault); fn hard_fault(ef: &ExceptionFrame) -> ! { panic!("{:#?}", ef); } exception!(*, default_handler); fn default_handler(irqn: i16) { panic!("Unhandled exception (IRQn = {})", irqn); }