stm32 adc: introduce blocking_read

examples/stm32g0/src/bin/adc.rs

@@ -17,7 +17,7 @@ async fn main(_spawner: Spawner) {
     let mut pin = p.PA1;
 
     let mut vrefint = adc.enable_vrefint();
-    let vrefint_sample = adc.read(&mut vrefint);
+    let vrefint_sample = adc.blocking_read(&mut vrefint);
     let convert_to_millivolts = |sample| {
         // From https://www.st.com/resource/en/datasheet/stm32g031g8.pdf
         // 6.3.3 Embedded internal reference voltage
@@ -27,7 +27,7 @@ async fn main(_spawner: Spawner) {
     };
 
     loop {
-        let v = adc.read(&mut pin);
+        let v = adc.blocking_read(&mut pin);
         info!("--> {} - {} mV", v, convert_to_millivolts(v));
         Timer::after_millis(100).await;
     }

examples/stm32g0/src/bin/adc_dma.rs

@@ -24,7 +24,7 @@ async fn main(_spawner: Spawner) {
     let mut pa0 = p.PA0.degrade_adc();
 
     loop {
-        adc.read_async(
+        adc.read(
             &mut dma,
             [
                 (&mut vrefint_channel, SampleTime::CYCLES160_5),

examples/stm32g0/src/bin/adc_oversampling.rs

@@ -36,7 +36,7 @@ async fn main(_spawner: Spawner) {
     adc.oversampling_enable(true);
 
     loop {
-        let v = adc.read(&mut pin);
+        let v = adc.blocking_read(&mut pin);
         info!("--> {} ", v); //max 65520 = 0xFFF0
         Timer::after_millis(100).await;
     }