From d3f3608136d269b72dc50dc02d0674391b67b31e Mon Sep 17 00:00:00 2001
From: linuswck <linuswck@m-labs.hk>
Date: Thu, 21 Dec 2023 16:37:53 +0800
Subject: [PATCH] DacVFb is changed to PC3 for rev0_2 prototype - This requires
 a circuit change to connect it to the PoE_PWR_SRC     through a 1.6k Ohm and
 100nF LPF

---
 src/device/gpio.rs        | 4 +++-
 src/thermostat/max1968.rs | 8 ++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/device/gpio.rs b/src/device/gpio.rs
index 49b73a9..90380d1 100644
--- a/src/device/gpio.rs
+++ b/src/device/gpio.rs
@@ -112,7 +112,9 @@ pub fn setup(
         shdn: gpioa.pa5.into_push_pull_output(),
         vref_pin: gpioa.pa6.into_analog(),
         itec_pin: gpiob.pb1.into_analog(),
-        dac_feedback_pin: gpioc.pc0.into_analog(),
+        // Fixme: Flywire is added to Rev0_2 prototype. In Rev0_3, it is connected to PC0
+        //dac_feedback_pin: gpioc.pc0.into_analog(),
+        dac_feedback_pin: gpioc.pc3.into_analog(),
         vtec_pin: gpiob.pb0.into_analog(),
         max_v: max_v0,
         max_i_pos: max_i_pos0,
diff --git a/src/thermostat/max1968.rs b/src/thermostat/max1968.rs
index 85d7bea..e84242a 100644
--- a/src/thermostat/max1968.rs
+++ b/src/thermostat/max1968.rs
@@ -96,7 +96,9 @@ impl ChannelPins for Channel0 {
     type ShdnPin = PA5<Output<PushPull>>;
     type VRefPin = PA6<Analog>;
     type ItecPin = PB1<Analog>;
-    type DacFeedbackPin = PC0<Analog>;
+    // Fixme: Flywire is added to Rev0_2 prototype. In Rev0_3, it is connected to PC0
+    //type DacFeedbackPin = PC0<Analog>;
+    type DacFeedbackPin = PC3<Analog>;
     type VTecPin = PB0<Analog>;
     type MaxVPin = PwmChannel<TIM4, 1>;
     type MaxIPosPin = PwmChannel<TIM4, 2>;
@@ -315,9 +317,7 @@ impl MAX1968 {
     }
 
     pub fn get_dac_vfb(&mut self) -> ElectricPotential {
-        // Fixme: Rev0_2 does not have this feature
-        unimplemented!()
-        //self.adc_read(AdcReadTarget:: DacVfb, 1)
+        self.adc_read(AdcReadTarget:: DacVfb, 1)
     }
 
     pub fn get_tec_i(&mut self) -> ElectricCurrent {