Add Observed things to opamp

Author: usbalbin

examples/opamp.rs

@@ -5,7 +5,7 @@
 
 use stm32g4xx_hal::adc::AdcClaim;
 use stm32g4xx_hal::adc::ClockSource;
-use stm32g4xx_hal::opamp::{Gain, InternalOutput};
+use stm32g4xx_hal::opamp::Gain;
 use stm32g4xx_hal::prelude::*;
 use stm32g4xx_hal::pwr::PwrExt;
 
@@ -34,12 +34,20 @@ fn main() -> ! {
     // setup opamps
     let (opamp1, opamp2, opamp3, ..) = dp.OPAMP.split(&mut rcc);
 
+    let pa1 = gpioa.pa1.into_analog();
+    let pa2 = gpioa.pa2.into_analog();
+    let pa7 = gpioa.pa7.into_analog();
+
+    let pb0 = gpiob.pb0.into_analog();
+    let pb1 = gpiob.pb1.into_analog();
+    let pb2 = gpiob.pb2.into_analog();
+
     // Set up opamp1 and opamp2 in follower mode
-    let opamp1 = opamp1.follower(gpioa.pa1, gpioa.pa2);
-    let opamp2 = opamp2.follower(gpioa.pa7, InternalOutput);
+    let opamp1 = opamp1.follower(pa1).enable_output(pa2);
+    let opamp2 = opamp2.follower(pa7);
 
     // Set up opamp1 and opamp2 in open loop mode
-    let opamp3 = opamp3.open_loop(gpiob.pb0, gpiob.pb2, gpiob.pb1);
+    let opamp3 = opamp3.open_loop(pb0, pb2).enable_output(pb1);
 
     // disable opamps
     let (opamp1, pa1, pa2) = opamp1.disable();
@@ -48,18 +56,10 @@ fn main() -> ! {
     let (_opamp3, _pb0, _pb2, _pb1) = opamp3.disable();
 
     // Configure opamp1 with pa1 as non-inverting input and set gain to x2
-    let _opamp1 = opamp1.pga(
-        pa1,
-        pa2, // Route output to pin pa2
-        Gain::Gain2,
-    );
+    let _opamp1 = opamp1.pga(pa1, Gain::Gain2).enable_output(pa2); // Route output to pin pa2
 
     // Configure op with pa7 as non-inverting input and set gain to x4
-    let opamp2 = opamp2.pga(
-        pa7,
-        InternalOutput, // Do not route output to any external pin, use internal AD instead
-        Gain::Gain4,
-    );
+    let opamp2 = opamp2.pga(pa7, Gain::Gain4); // Do not route output to any external pin, use internal AD instead
 
     // Lock opamp2. After the opamp is locked its registers cannot be written
     // until the device is reset (even if using unsafe register accesses).