Add flowsensor prototype, add canbus to backplane

rust/src/hal/mod.rs

@@ -47,6 +47,7 @@ use once_cell::sync::Lazy;
 use std::result::Result::Ok as OkStd;
 use std::sync::Mutex;
 use std::time::Duration;
+use esp_idf_hal::pcnt::PCNT1;
 
 //Only support for 8 right now!
 pub const PLANT_COUNT: usize = 8;
@@ -154,6 +155,7 @@ pub struct FreePeripherals {
     pub gpio29: Gpio29,
     pub gpio30: Gpio30,
     pub pcnt0: PCNT0,
+    pub pcnt1: PCNT1,
     pub adc1: ADC1,
 }
 
@@ -186,6 +188,7 @@ impl PlantHal {
         let free_pins = FreePeripherals {
             adc1: peripherals.adc1,
             pcnt0: peripherals.pcnt0,
+            pcnt1: peripherals.pcnt1,
             gpio0: peripherals.pins.gpio0,
             gpio1: peripherals.pins.gpio1,
             gpio2: peripherals.pins.gpio2,