447411fb58
* Rework hal initialization * Turn sw interrupt control into a virtual peripheral * Return a tuple instead of a named struct * Fix docs * Remove SystemClockControl * Move software interrupts under interrupt * Re-document what's left in system * Update time docs * Update sw int docs * Introduce Config * Fix tests * Remove redundant inits * Doc * Clean up examples&tests * Update tests * Add changelog entry * Start migration guide * Restore some convenience-imports * Remove Config from prelude
109 lines
2.9 KiB
Rust
109 lines
2.9 KiB
Rust
//! RMT Loopback Test
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//!
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//! It's assumed GPIO2 is connected to GPIO3
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//% CHIPS: esp32 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
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#![no_std]
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#![no_main]
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use esp_hal::{
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gpio::Io,
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prelude::*,
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rmt::{PulseCode, Rmt, RxChannel, RxChannelConfig, TxChannel, TxChannelConfig},
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};
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use hil_test as _;
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#[cfg(test)]
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#[embedded_test::tests]
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mod tests {
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use super::*;
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#[init]
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fn init() {}
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#[test]
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#[timeout(1)]
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fn rmt_loopback() {
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let (peripherals, clocks) = esp_hal::init(esp_hal::Config::default());
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let io = Io::new(peripherals.GPIO, peripherals.IO_MUX);
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cfg_if::cfg_if! {
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if #[cfg(feature = "esp32h2")] {
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let freq = 32.MHz();
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} else {
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let freq = 80.MHz();
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}
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};
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let rmt = Rmt::new(peripherals.RMT, freq, &clocks).unwrap();
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let tx_config = TxChannelConfig {
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clk_divider: 255,
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..TxChannelConfig::default()
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};
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let tx_channel = {
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use esp_hal::rmt::TxChannelCreator;
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rmt.channel0.configure(io.pins.gpio2, tx_config).unwrap()
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};
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let rx_config = RxChannelConfig {
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clk_divider: 255,
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idle_threshold: 1000,
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..RxChannelConfig::default()
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};
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cfg_if::cfg_if! {
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if #[cfg(any(feature = "esp32", feature = "esp32s2"))] {
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let rx_channel = {
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use esp_hal::rmt::RxChannelCreator;
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rmt.channel1.configure(io.pins.gpio3, rx_config).unwrap()
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};
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} else if #[cfg(feature = "esp32s3")] {
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let rx_channel = {
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use esp_hal::rmt::RxChannelCreator;
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rmt.channel7.configure(io.pins.gpio3, rx_config).unwrap()
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};
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} else {
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let rx_channel = {
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use esp_hal::rmt::RxChannelCreator;
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rmt.channel2.configure(io.pins.gpio3, rx_config).unwrap()
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};
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}
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}
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let mut tx_data = [PulseCode {
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level1: true,
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length1: 200,
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level2: false,
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length2: 50,
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}; 20];
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tx_data[tx_data.len() - 2] = PulseCode {
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level1: true,
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length1: 3000,
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level2: false,
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length2: 500,
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};
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tx_data[tx_data.len() - 1] = PulseCode::default();
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let mut rcv_data = [PulseCode {
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level1: false,
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length1: 0,
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level2: false,
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length2: 0,
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}; 20];
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let rx_transaction = rx_channel.receive(&mut rcv_data).unwrap();
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let tx_transaction = tx_channel.transmit(&tx_data);
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tx_transaction.wait().unwrap();
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rx_transaction.wait().unwrap();
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// the last two pulse-codes are the ones which wait for the timeout so they
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// can't be equal
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assert_eq!(&tx_data[..18], &rcv_data[..18]);
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}
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}
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