Crate stm32f1xx_hal

HAL for the STM32F1 family of microcontrollers

This is an implementation of the embedded-hal traits for the STM32F1 family of microcontrollers.

Usage

Building an application (binary crate)

Follow the cortex-m-quickstart instructions, add this crate as a dependency and make sure you enable the "rt" Cargo feature of this crate. Also select which microcontroller you will be using by using the corresponding feature. The currently supported microcontrollers are:

• stm32f103
• stm32f100

Usage

This crate supports multiple microcontrollers in the stm32f1 family. Which specific microcontroller you want to build for has to be specified with a feature, for example stm32f103.

If no microcontroller is specified, the crate will not compile.

The currently supported variants are

• stm32f100
• stm32f101
• stm32f103

You may also need to specify the density of the device with medium, high or xl to enable certain peripherals. Generally the density can be determined by the 2nd character after the number in the device name (i.e. For STM32F103C6U, the 6 indicates a low-density device) but check the datasheet or CubeMX to be sure.

• 4, 6 => low density, no feature required
• 8, B => medium feature
• C, D, E => high feature
• F, G => xl feature

Usage example

The following example blinks an LED connected to PC13 which is where the LED is connected on the blue_pill board. If you are testing on a different breakout board, you may need to change the pin accordingly.

#![no_std]
#![no_main]
 
use panic_halt as _;
 
use nb::block;
 
use stm32f1xx_hal::{
    prelude::*,
    pac,
    timer::Timer,
};
use cortex_m_rt::entry;
use embedded_hal::digital::v2::OutputPin;
 
#[entry]
fn main() -> ! {
    // Get access to the core peripherals from the cortex-m crate
    let cp = cortex_m::Peripherals::take().unwrap();
    // Get access to the device specific peripherals from the peripheral access crate
    let dp = pac::Peripherals::take().unwrap();
 
    // Take ownership over the raw flash and rcc devices and convert them into the corresponding
    // HAL structs
    let mut flash = dp.FLASH.constrain();
    let mut rcc = dp.RCC.constrain();
 
    // Freeze the configuration of all the clocks in the system and store the frozen frequencies in
    // `clocks`
    let clocks = rcc.cfgr.freeze(&mut flash.acr);
 
    // Acquire the GPIOC peripheral
    let mut gpioc = dp.GPIOC.split(&mut rcc.apb2);
 
    // Configure gpio C pin 13 as a push-pull output. The `crh` register is passed to the function
    // in order to configure the port. For pins 0-7, crl should be passed instead.
    let mut led = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
    // Configure the syst timer to trigger an update every second
    let mut timer = Timer::syst(cp.SYST, &clocks).start_count_down(1.hz());
 
    // Wait for the timer to trigger an update and change the state of the LED
    loop {
        block!(timer.wait()).unwrap();
        led.set_high().unwrap();
        block!(timer.wait()).unwrap();
        led.set_low().unwrap();
    }
}

More examples

See the examples folder.

Modules

adc	API for the Analog to Digital converter
afio	Alternate Function I/Os
backup_domain	Registers that are not reset as long as Vbat or Vdd has power.
bb	Bit banding
delay	Delays
device
dma	Direct Memory Access
flash	Flash memory
gpio	General Purpose I/Os
i2c	Inter-Integrated Circuit (I2C) bus
pac
prelude
pwm	Pulse width modulation
pwm_input	This module allows Timer peripherals to be configured as pwm input. In this mode, the timer sample a squared signal to find it's frequency and duty cycle.
qei
rcc	Reset & Control Clock
rtc	Real time clock
serial	Serial Communication (USART)
spi	Serial Peripheral Interface
stm32
time	Time units
timer	Timer
usb	USB peripheral Requires the stm32-usbd feature. See https://github.com/stm32-rs/stm32f1xx-hal/tree/master/examples for usage examples
watchdog	Watchdog peripherals