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preliminary UART setup for CO2 sensor

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This commit is contained in:
Clara Dautermann 2025-07-20 10:55:49 +02:00
parent 48d8ef95d6
commit fab4ac1af7
Signed by: clara
GPG key ID: 223391B52FAD4463
3 changed files with 32 additions and 0 deletions
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24
firmware/src/main.rs
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@ -6,8 +6,11 @@ use esp_idf_hal::{
ADC2,
},
delay::Delay,
gpio,
i2c::{I2cConfig, I2cDriver, I2cError},
prelude::Peripherals,
uart::{config, UartDriver},
units::Hertz,
};
struct InitResult<'s, I2C> {
@ -113,6 +116,27 @@ fn init<'a>() -> InitResult<'a, I2cDriver<'a>> {
log::info!("ADC2 channel driver@GPIO4 initialized!");
//set up mh-Z19B CO2 sensor
let tx_pin = peripherals.pins.gpio5;
let rx_pin = peripherals.pins.gpio6;
//obtain UART connection
let uart_config = config::Config::new().baudrate(Hertz(115_200));
let uart = match UartDriver::new(
peripherals.uart1,
tx_pin,
rx_pin,
Option::<gpio::AnyIOPin>::None,
Option::<gpio::AnyIOPin>::None,
&uart_config,
) {
Ok(uart_drv) => uart_drv,
Err(error) => {
log::error!("Error initializing UART connection: {error}.");
panic!();
}
};
InitResult {
bme280: bme280,
no2_adc: adc_channel_driver,