71 lines
2.4 KiB
Rust
71 lines
2.4 KiB
Rust
//! Simple ADC example.
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#![no_main]
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#![no_std]
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use cortex_m_rt::entry;
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use embedded_hal::delay::DelayNs;
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use panic_rtt_target as _;
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use rtt_target::{rprintln, rtt_init_print};
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use simple_examples::peb1;
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use va416xx_hal::{
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adc::{Adc, ChannelSelect, ChannelValue, MultiChannelSelect},
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pac,
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prelude::*,
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timer::CountdownTimer,
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};
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// Quite spammy and disabled by default.
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const ENABLE_BUF_PRINTOUT: bool = false;
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#[entry]
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fn main() -> ! {
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rtt_init_print!();
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rprintln!("VA416xx ADC example");
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let mut dp = pac::Peripherals::take().unwrap();
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// Use the external clock connected to XTAL_N.
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let clocks = dp
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.clkgen
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.constrain()
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.xtal_n_clk_with_src_freq(peb1::EXTCLK_FREQ)
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.freeze(&mut dp.sysconfig)
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.unwrap();
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let adc = Adc::new_with_channel_tag(&mut dp.sysconfig, dp.adc, &clocks);
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let mut delay_provider = CountdownTimer::new(&mut dp.sysconfig, dp.tim0, &clocks);
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let mut read_buf: [ChannelValue; 8] = [ChannelValue::default(); 8];
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loop {
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let single_value = adc
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.trigger_and_read_single_channel(va416xx_hal::adc::ChannelSelect::AnIn0)
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.expect("reading single channel value failed");
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rprintln!("Read single ADC value on channel 0: {:?}", single_value);
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let read_num = adc
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.sweep_and_read_range(0, 7, &mut read_buf)
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.expect("ADC range read failed");
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if ENABLE_BUF_PRINTOUT {
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rprintln!("ADC Range Read (0-8) read {} values", read_num);
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rprintln!("ADC Range Read (0-8): {:?}", read_buf);
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}
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assert_eq!(read_num, 8);
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for (idx, ch_val) in read_buf.iter().enumerate() {
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assert_eq!(
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ch_val.channel(),
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ChannelSelect::try_from(idx as u8).unwrap()
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);
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}
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adc.sweep_and_read_multiselect(
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MultiChannelSelect::AnIn0 | MultiChannelSelect::AnIn2 | MultiChannelSelect::TempSensor,
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&mut read_buf[0..3],
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)
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.expect("ADC multiselect read failed");
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if ENABLE_BUF_PRINTOUT {
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rprintln!("ADC Multiselect Read(0, 2 and 10): {:?}", &read_buf[0..3]);
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}
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assert_eq!(read_buf[0].channel(), ChannelSelect::AnIn0);
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assert_eq!(read_buf[1].channel(), ChannelSelect::AnIn2);
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assert_eq!(read_buf[2].channel(), ChannelSelect::TempSensor);
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delay_provider.delay_ms(500);
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}
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}
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