M-Labs/thermostat
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ad7172: move setup from main

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Astro 2020-03-12 00:44:15 +01:00
parent 44c8ff54c1
commit c377706e0e
2 changed files with 23 additions and 17 deletions
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20
src/ad7172/adc.rs
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@ -19,22 +19,26 @@ pub struct Adc<SPI: Transfer<u8>, NSS: OutputPin> {
} }
impl<SPI: Transfer<u8, Error = E>, NSS: OutputPin, E: fmt::Debug> Adc<SPI, NSS> { impl<SPI: Transfer<u8, Error = E>, NSS: OutputPin, E: fmt::Debug> Adc<SPI, NSS> {
pub fn new(spi: SPI, mut nss: NSS) -> Result<Self, SPI::Error> { pub fn new(spi: SPI, mut nss: NSS) -> Result<Self, AdcError<SPI::Error>> {
let _ = nss.set_high(); let _ = nss.set_high();
let mut adc = Adc { let mut adc = Adc {
spi, nss, spi, nss,
checksum_mode: ChecksumMode::Off, checksum_mode: ChecksumMode::Off,
}; };
adc.reset()?; adc.reset()?;
adc.set_checksum_mode(ChecksumMode::Crc).unwrap();
match adc.identify() { let mut retries = 0;
Err(e) => let mut adc_id;
warn!("Cannot identify ADC: {:?}", e), loop {
Ok(id) if id & 0xFFF0 == 0x00D0 => adc_id = adc.identify()?;
info!("ADC id: {:04X}", id), if adc_id & 0xFFF0 == 0x00D0 {
Ok(id) => break;
info!("ADC id: {:04X} (corrupt)", id), } else {
retries += 1;
}
} }
info!("ADC id: {:04X} ({} retries)", adc_id, retries);
Ok(adc) Ok(adc)
} }

20
src/main.rs
View File

@ -92,11 +92,8 @@ fn main() -> ! {
let pins = Pins::setup(clocks, dp.GPIOA, dp.GPIOB, dp.GPIOC, dp.GPIOG, dp.SPI2); let pins = Pins::setup(clocks, dp.GPIOA, dp.GPIOB, dp.GPIOC, dp.GPIOG, dp.SPI2);
info!("ADC init");
let mut adc = ad7172::Adc::new(pins.adc_spi, pins.adc_nss).unwrap(); let mut adc = ad7172::Adc::new(pins.adc_spi, pins.adc_nss).unwrap();
adc.set_checksum_mode(ad7172::ChecksumMode::Crc).unwrap();
info!("Timer setup");
timer::setup(cp.SYST, clocks); timer::setup(cp.SYST, clocks);
#[cfg(not(feature = "generate-hwaddr"))] #[cfg(not(feature = "generate-hwaddr"))]
@ -128,15 +125,20 @@ fn main() -> ! {
last_output = now; last_output = now;
} }
if let Some(channel) = adc.data_ready().unwrap() {
let data = adc.read_data().unwrap();
info!("ADC {}: {:08X}", channel, data);
}
// Update watchdog // Update watchdog
wd.feed(); wd.feed();
cortex_m::interrupt::free(|cs| { // cortex_m::interrupt::free(|cs| {
if !net::is_pending(cs) { // if !net::is_pending(cs) {
// Wait for interrupts // // Wait for interrupts
wfi(); // wfi();
} // }
}); // });
} }
}); });
}); });