110 lines
3.7 KiB
Rust
110 lines
3.7 KiB
Rust
#![no_std]
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#![no_main]
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use defmt::*;
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use embassy_stm32::adc;
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use embassy_stm32::adc::{adc4, AdcChannel};
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: embassy_executor::Spawner) {
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let config = embassy_stm32::Config::default();
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let mut p = embassy_stm32::init(config);
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// **** ADC1 init ****
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let mut adc1 = adc::Adc::new(p.ADC1);
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let mut adc1_pin1 = p.PA3; // A0 on nucleo u5a5
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let mut adc1_pin2 = p.PA2; // A1
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adc1.set_resolution(adc::Resolution::BITS14);
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adc1.set_averaging(adc::Averaging::Samples1024);
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adc1.set_sample_time(adc::SampleTime::CYCLES160_5);
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let max1 = adc::resolution_to_max_count(adc::Resolution::BITS14);
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// **** ADC2 init ****
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let mut adc2 = adc::Adc::new(p.ADC2);
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let mut adc2_pin1 = p.PC3; // A2
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let mut adc2_pin2 = p.PB0; // A3
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adc2.set_resolution(adc::Resolution::BITS14);
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adc2.set_averaging(adc::Averaging::Samples1024);
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adc2.set_sample_time(adc::SampleTime::CYCLES160_5);
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let max2 = adc::resolution_to_max_count(adc::Resolution::BITS14);
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// **** ADC4 init ****
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let mut adc4 = adc4::Adc4::new(p.ADC4);
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let mut adc4_pin1 = p.PC1; // A4
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let mut adc4_pin2 = p.PC0; // A5
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adc4.set_resolution(adc4::Resolution::BITS12);
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adc4.set_averaging(adc4::Averaging::Samples256);
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adc4.set_sample_time(adc4::SampleTime::CYCLES1_5);
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let max4 = adc4::resolution_to_max_count(adc4::Resolution::BITS12);
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// **** ADC1 blocking read ****
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let raw: u16 = adc1.blocking_read(&mut adc1_pin1);
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let volt: f32 = 3.3 * raw as f32 / max1 as f32;
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info!("Read adc1 pin 1 {}", volt);
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let raw: u16 = adc1.blocking_read(&mut adc1_pin2);
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let volt: f32 = 3.3 * raw as f32 / max1 as f32;
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info!("Read adc1 pin 2 {}", volt);
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// **** ADC2 blocking read ****
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let raw: u16 = adc2.blocking_read(&mut adc2_pin1);
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let volt: f32 = 3.3 * raw as f32 / max2 as f32;
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info!("Read adc2 pin 1 {}", volt);
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let raw: u16 = adc2.blocking_read(&mut adc2_pin2);
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let volt: f32 = 3.3 * raw as f32 / max2 as f32;
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info!("Read adc2 pin 2 {}", volt);
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// **** ADC4 blocking read ****
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let raw: u16 = adc4.blocking_read(&mut adc4_pin1);
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let volt: f32 = 3.3 * raw as f32 / max4 as f32;
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info!("Read adc4 pin 1 {}", volt);
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let raw: u16 = adc4.blocking_read(&mut adc4_pin2);
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let volt: f32 = 3.3 * raw as f32 / max4 as f32;
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info!("Read adc4 pin 2 {}", volt);
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// **** ADC1 async read ****
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let mut degraded11 = adc1_pin1.degrade_adc();
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let mut degraded12 = adc1_pin2.degrade_adc();
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let mut measurements = [0u16; 2];
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adc1.read(
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&mut p.GPDMA1_CH0,
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[
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(&mut degraded11, adc::SampleTime::CYCLES160_5),
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(&mut degraded12, adc::SampleTime::CYCLES160_5),
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]
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.into_iter(),
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&mut measurements,
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)
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.await;
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let volt1: f32 = 3.3 * measurements[0] as f32 / max1 as f32;
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let volt2: f32 = 3.3 * measurements[1] as f32 / max1 as f32;
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info!("Async read 1 pin 1 {}", volt1);
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info!("Async read 1 pin 2 {}", volt2);
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// **** ADC2 does not support async read ****
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// **** ADC4 async read ****
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let mut degraded41 = adc4_pin1.degrade_adc();
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let mut degraded42 = adc4_pin2.degrade_adc();
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let mut measurements = [0u16; 2];
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// The channels must be in ascending order and can't repeat for ADC4
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adc4.read(
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&mut p.GPDMA1_CH1,
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[&mut degraded42, &mut degraded41].into_iter(),
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&mut measurements,
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)
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.await
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.unwrap();
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let volt2: f32 = 3.3 * measurements[0] as f32 / max4 as f32;
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let volt1: f32 = 3.3 * measurements[1] as f32 / max4 as f32;
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info!("Async read 4 pin 1 {}", volt1);
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info!("Async read 4 pin 2 {}", volt2);
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}
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