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- #![deny(unsafe_code)]
- #![no_main]
- #![no_std]
- use panic_semihosting as _;
- use stm32f1xx_hal::{
- prelude::*,
- pac,
- adc,
- };
- use cortex_m_rt::entry;
- use cortex_m_semihosting::hprintln;
- #[entry]
- fn main() -> ! {
- // Aquire peripherals
- let p = pac::Peripherals::take().unwrap();
- let mut flash = p.FLASH.constrain();
- let mut rcc = p.RCC.constrain();
- // Configure ADC clocks
- // Default value is the slowest possible ADC clock: PCLK2 / 8. Meanwhile ADC
- // clock is configurable. So its frequency may be tweaked to meet certain
- // practical needs. User specified value is be approximated using supported
- // prescaler values 2/4/6/8.
- let clocks = rcc.cfgr.adcclk(2.mhz()).freeze(&mut flash.acr);
- hprintln!("adc freq: {}", clocks.adcclk().0).unwrap();
- // Setup ADC
- let mut adc1 = adc::Adc::adc1(p.ADC1, &mut rcc.apb2, clocks);
- #[cfg(feature = "stm32f103")]
- let mut adc2 = adc::Adc::adc2(p.ADC2, &mut rcc.apb2, clocks);
- // Setup GPIOB
- let mut gpiob = p.GPIOB.split(&mut rcc.apb2);
- // Configure pb0, pb1 as an analog input
- let mut ch0 = gpiob.pb0.into_analog(&mut gpiob.crl);
- #[cfg(feature = "stm32f103")]
- let mut ch1 = gpiob.pb1.into_analog(&mut gpiob.crl);
- loop {
- let data: u16 = adc1.read(&mut ch0).unwrap();
- hprintln!("adc1: {}", data).unwrap();
- #[cfg(feature = "stm32f103")]
- {
- let data1: u16 = adc2.read(&mut ch1).unwrap();
- hprintln!("adc2: {}", data1).unwrap();
- }
- }
- }
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