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@ -2,28 +2,31 @@
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#![no_main]
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#![no_std]
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use core::panic;
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use cortex_m_rt::entry;
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use embedded_hal::spi;
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use embedded_hal::{blocking::delay::DelayUs, spi};
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use max116xx_10bit::VoltageRefMode;
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use max116xx_10bit::{AveragingConversions, AveragingResults};
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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 va108xx_hal::timer::CountDownTimer;
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use va108xx_hal::{
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gpio::PinsA,
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pac::{self, interrupt, SPIB},
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prelude::*,
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spi::{Spi, SpiBase, SpiConfig, TransferConfig},
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timer::{default_ms_irq_handler, set_up_ms_timer, Delay},
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timer::{default_ms_irq_handler, set_up_ms_timer, Delay, IrqCfg},
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utility::{port_mux, Funsel, PortSel},
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};
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use vorago_reb1::max11619::{
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max11619_externally_clocked, max11619_internally_clocked, EocPin, AN2_CHANNEL,
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POTENTIOMETER_CHANNEL,
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max11619_externally_clocked_no_wakeup, max11619_externally_clocked_with_wakeup,
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max11619_internally_clocked, EocPin, AN2_CHANNEL, POTENTIOMETER_CHANNEL,
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};
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#[derive(Debug, PartialEq, Copy, Clone)]
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pub enum ExampleMode {
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UsingEoc,
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NotUsingEoc,
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NotUsingEocWithDelay,
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}
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#[derive(Debug, PartialEq, Copy, Clone)]
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@ -31,10 +34,18 @@ pub enum ReadMode {
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Single,
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Multiple,
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MultipleNToHighest,
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AverageN,
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}
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#[derive(Debug, PartialEq, Copy, Clone)]
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pub enum MuxMode {
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None,
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PortB19to17,
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}
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const EXAMPLE_MODE: ExampleMode = ExampleMode::NotUsingEoc;
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const READ_MODE: ReadMode = ReadMode::Multiple;
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const MUX_MODE: MuxMode = MuxMode::None;
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#[entry]
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fn main() -> ! {
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@ -43,11 +54,11 @@ fn main() -> ! {
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let mut dp = pac::Peripherals::take().unwrap();
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let tim0 = set_up_ms_timer(
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IrqCfg::new(pac::Interrupt::OC0, true, true),
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&mut dp.SYSCONFIG,
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&mut dp.IRQSEL,
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50.mhz().into(),
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Some(&mut dp.IRQSEL),
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50.mhz(),
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dp.TIM0,
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interrupt::OC0,
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);
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let delay = Delay::new(tim0);
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unsafe {
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@ -62,6 +73,12 @@ fn main() -> ! {
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pinsa.pa18.into_funsel_2(),
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);
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if MUX_MODE == MuxMode::PortB19to17 {
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port_mux(&mut dp.IOCONFIG, PortSel::PortB, 19, Funsel::Funsel1).ok();
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port_mux(&mut dp.IOCONFIG, PortSel::PortB, 18, Funsel::Funsel1).ok();
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port_mux(&mut dp.IOCONFIG, PortSel::PortB, 17, Funsel::Funsel1).ok();
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port_mux(&mut dp.IOCONFIG, PortSel::PortB, 16, Funsel::Funsel1).ok();
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}
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// Set the accelerometer chip select low in case the board slot is populated
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let mut accel_cs = pinsa.pa16.into_push_pull_output();
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accel_cs
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@ -89,6 +106,10 @@ fn main() -> ! {
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ExampleMode::UsingEoc => {
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spi_example_internally_clocked(spi, delay, pinsa.pa14.into_floating_input());
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}
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ExampleMode::NotUsingEocWithDelay => {
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let delay_us = CountDownTimer::new(&mut dp.SYSCONFIG, 50.mhz(), dp.TIM2);
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spi_example_externally_clocked_with_delay(spi, delay, delay_us);
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}
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}
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}
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@ -97,9 +118,17 @@ fn OC0() {
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default_ms_irq_handler();
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}
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/// Use the SPI clock as the conversion clock
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fn spi_example_externally_clocked(spi: SpiBase<SPIB>, mut delay: Delay) -> ! {
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let mut adc = max11619_externally_clocked(spi)
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let mut adc = max11619_externally_clocked_no_wakeup(spi)
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.expect("Creating externally clocked MAX11619 device failed");
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if READ_MODE == ReadMode::AverageN {
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adc.averaging(
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AveragingConversions::FourConversions,
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AveragingResults::FourResults,
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)
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.expect("Error setting up averaging register");
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}
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let mut cmd_buf: [u8; 32] = [0; 32];
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let mut counter = 0;
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loop {
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@ -108,50 +137,36 @@ fn spi_example_externally_clocked(spi: SpiBase<SPIB>, mut delay: Delay) -> ! {
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match READ_MODE {
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ReadMode::Single => {
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rprintln!("Reading single potentiometer channel");
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let pot_val = match adc.read_single_channel(&mut cmd_buf, POTENTIOMETER_CHANNEL) {
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Ok(pot_val) => pot_val,
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_ => {
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panic!("Creating externally clocked MAX11619 ADC failed");
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}
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};
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let pot_val = adc
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.read_single_channel(&mut cmd_buf, POTENTIOMETER_CHANNEL)
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.expect("Creating externally clocked MAX11619 ADC failed");
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rprintln!("Single channel read:");
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rprintln!("\tPotentiometer value: {}", pot_val);
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}
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ReadMode::Multiple => {
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let mut res_buf: [u16; 4] = [0; 4];
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match adc.read_multiple_channels_0_to_n(
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adc.read_multiple_channels_0_to_n(
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&mut cmd_buf,
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&mut res_buf.iter_mut(),
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POTENTIOMETER_CHANNEL,
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) {
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Ok(_) => {
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rprintln!("Multi channel read from 0 to 3:");
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rprintln!("\tAN0 value: {}", res_buf[0]);
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rprintln!("\tAN1 value: {}", res_buf[1]);
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rprintln!("\tAN2 value: {}", res_buf[2]);
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rprintln!("\tAN3 / Potentiometer value: {}", res_buf[3]);
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}
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_ => {
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panic!("Multi-Channel read failed");
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}
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}
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)
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.expect("Multi-Channel read failed");
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print_res_buf(&res_buf);
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}
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ReadMode::MultipleNToHighest => {
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let mut res_buf: [u16; 2] = [0; 2];
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match adc.read_multiple_channels_n_to_highest(
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adc.read_multiple_channels_n_to_highest(
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&mut cmd_buf,
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&mut res_buf.iter_mut(),
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AN2_CHANNEL,
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) {
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Ok(_) => {
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rprintln!("Multi channel read from 2 to 3:");
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rprintln!("\tAN2 value: {}", res_buf[0]);
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rprintln!("\tAN3 / Potentiometer value: {}", res_buf[1]);
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}
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_ => {
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panic!("Multi-Channel read failed");
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}
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}
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)
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.expect("Multi-Channel read failed");
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rprintln!("Multi channel read from 2 to 3:");
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rprintln!("\tAN2 value: {}", res_buf[0]);
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rprintln!("\tAN3 / Potentiometer value: {}", res_buf[1]);
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}
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ReadMode::AverageN => {
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rprintln!("Scanning and averaging not possible for externally clocked mode");
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}
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}
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counter += 1;
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@ -159,22 +174,122 @@ fn spi_example_externally_clocked(spi: SpiBase<SPIB>, mut delay: Delay) -> ! {
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}
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}
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fn spi_example_internally_clocked(spi: SpiBase<SPIB>, mut delay: Delay, mut eoc_pin: EocPin) -> ! {
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let mut adc = max11619_internally_clocked(spi).expect("Creaintg MAX116xx device failed");
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fn spi_example_externally_clocked_with_delay(
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spi: SpiBase<SPIB>,
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mut delay: Delay,
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mut delay_us: impl DelayUs<u8>,
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) -> ! {
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let mut adc =
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max11619_externally_clocked_with_wakeup(spi).expect("Creating MAX116xx device failed");
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let mut cmd_buf: [u8; 32] = [0; 32];
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let mut counter = 0;
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loop {
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rprintln!("-- Measurement {} --", counter);
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match adc.request_single_channel(POTENTIOMETER_CHANNEL) {
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Ok(_) => (),
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_ => panic!("Requesting single channel value failed"),
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};
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let pot_val = match nb::block!(adc.get_single_channel(&mut eoc_pin)) {
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Ok(pot_val) => pot_val,
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_ => panic!("Reading single channel value failed"),
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};
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rprintln!("\tPotentiometer value: {}", pot_val);
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match READ_MODE {
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ReadMode::Single => {
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rprintln!("Reading single potentiometer channel");
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let pot_val = adc
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.read_single_channel(&mut cmd_buf, POTENTIOMETER_CHANNEL, &mut delay_us)
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.expect("Creating externally clocked MAX11619 ADC failed");
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rprintln!("Single channel read:");
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rprintln!("\tPotentiometer value: {}", pot_val);
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}
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ReadMode::Multiple => {
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let mut res_buf: [u16; 4] = [0; 4];
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adc.read_multiple_channels_0_to_n(
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&mut cmd_buf,
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&mut res_buf.iter_mut(),
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POTENTIOMETER_CHANNEL,
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&mut delay_us,
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)
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.expect("Multi-Channel read failed");
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print_res_buf(&res_buf);
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}
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ReadMode::MultipleNToHighest => {
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let mut res_buf: [u16; 2] = [0; 2];
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adc.read_multiple_channels_n_to_highest(
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&mut cmd_buf,
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&mut res_buf.iter_mut(),
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AN2_CHANNEL,
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&mut delay_us,
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)
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.expect("Multi-Channel read failed");
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rprintln!("Multi channel read from 2 to 3:");
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rprintln!("\tAN2 value: {}", res_buf[0]);
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rprintln!("\tAN3 / Potentiometer value: {}", res_buf[1]);
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}
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ReadMode::AverageN => {
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rprintln!("Scanning and averaging not possible for externally clocked mode");
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}
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}
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counter += 1;
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delay.delay_ms(500);
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}
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}
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/// This function uses the EOC pin to determine whether the conversion finished
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fn spi_example_internally_clocked(spi: SpiBase<SPIB>, mut delay: Delay, eoc_pin: EocPin) -> ! {
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let mut adc = max11619_internally_clocked(
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spi,
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eoc_pin,
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VoltageRefMode::ExternalSingleEndedNoWakeupDelay,
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)
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.expect("Creating MAX116xx device failed");
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let mut counter = 0;
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loop {
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rprintln!("-- Measurement {} --", counter);
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match READ_MODE {
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ReadMode::Single => {
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adc.request_single_channel(POTENTIOMETER_CHANNEL)
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.expect("Requesting single channel value failed");
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let pot_val = nb::block!(adc.get_single_channel())
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.expect("Reading single channel value failed");
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rprintln!("\tPotentiometer value: {}", pot_val);
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}
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ReadMode::Multiple => {
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adc.request_multiple_channels_0_to_n(POTENTIOMETER_CHANNEL)
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.expect("Requesting single channel value failed");
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let mut res_buf: [u16; 4] = [0; 4];
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nb::block!(adc.get_multi_channel(&mut res_buf.iter_mut()))
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.expect("Requesting multiple channel values failed");
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print_res_buf(&res_buf);
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}
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ReadMode::MultipleNToHighest => {
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adc.request_multiple_channels_n_to_highest(AN2_CHANNEL)
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.expect("Requesting single channel value failed");
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let mut res_buf: [u16; 4] = [0; 4];
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nb::block!(adc.get_multi_channel(&mut res_buf.iter_mut()))
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.expect("Requesting multiple channel values failed");
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rprintln!("Multi channel read from 2 to 3:");
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rprintln!("\tAN2 value: {}", res_buf[0]);
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rprintln!("\tAN3 / Potentiometer value: {}", res_buf[1]);
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}
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ReadMode::AverageN => {
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adc.request_channel_n_repeatedly(POTENTIOMETER_CHANNEL)
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.expect("Reading channel multiple times failed");
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let mut res_buf: [u16; 16] = [0; 16];
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nb::block!(adc.get_multi_channel(&mut res_buf.iter_mut()))
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.expect("Requesting multiple channel values failed");
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rprintln!("Reading potentiometer 4 times");
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rprintln!("\tValue 0: {}", res_buf[0]);
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rprintln!("\tValue 1: {}", res_buf[1]);
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rprintln!("\tValue 2: {}", res_buf[2]);
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rprintln!("\tValue 3: {}", res_buf[3]);
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}
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}
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counter += 1;
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delay.delay_ms(500);
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}
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}
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fn print_res_buf(buf: &[u16; 4]) {
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rprintln!("Multi channel read from 0 to 3:");
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rprintln!("\tAN0 value: {}", buf[0]);
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rprintln!("\tAN1 value: {}", buf[1]);
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rprintln!("\tAN2 value: {}", buf[2]);
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rprintln!("\tAN3 / Potentiometer value: {}", buf[3]);
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}
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Robin Müller