thomson

commit 7f4dc611334adefd31a672304707695e4f382967
parent c2e813ce07affd49e117216ac0833e7f25fd1ccf
Author: Daniel Barlow <dan@telent.net>
Date:   Fri, 19 Jun 2026 01:04:26 +0100

create a OneWire and reset the bus

Diffstat:
M
src/bin/main.rs
 | 
30
++++++++++++++++++++++++++++--

1 file changed, 28 insertions(+), 2 deletions(-)
diff --git a/src/bin/main.rs b/src/bin/main.rs
@@ -11,11 +11,20 @@ use defmt::info;
 use embassy_executor::Spawner;
 use embassy_time::{Duration, Timer};
 use esp_hal::{
+    delay::Delay,
     clock::CpuClock,
     timer::timg::TimerGroup,
-    gpio::{Level, Output, OutputConfig}
+    gpio::{Level, Flex,
+           Output, OutputConfig,
+           Input, InputConfig,
+           DriveMode,
+           Pull
+    }
+
 };
 
+use onewire::OneWire;
+
 use esp_radio::ble::controller::BleConnector;
 use panic_rtt_target as _;
 
@@ -58,12 +67,29 @@ async fn main(spawner: Spawner) -> ! {
     // TODO: Spawn some tasks
     let _ = spawner;
 
+    let in_config = InputConfig::default().with_pull(Pull::Up);
+
+    let out_config = OutputConfig::default()
+        .with_drive_mode(DriveMode::OpenDrain)
+        .with_pull(Pull::None); // Use an external 4.7k pull-up resistor
+
+    let mut flex = Flex::new(peripherals.GPIO3);
+    flex.apply_input_config(&in_config);
+    flex.apply_output_config(&out_config);
+    flex.set_input_enable(true);
+    flex.set_output_enable(true);
+
+    let mut wire = OneWire::new(&mut flex, false);
+    let mut delay = Delay::new();
+
+    info!("{:?}",  wire.reset(&mut delay));
+
     let mut led = Output::new(peripherals.GPIO8, Level::Low, OutputConfig::default());
     led.set_high();
 
     loop {
         info!("Hello world!");
-        Timer::after(Duration::from_secs(1)).await;
+        delay.delay_millis(500);
         led.toggle();
     }