Merge pull request #4646 from Iooon/mspm0-adc

MSPM0: add adc implementation

Author: i509VCB

embassy-mspm0/CHANGELOG.md

@@ -12,3 +12,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - fix gpio interrupt not being set for mspm0l110x
 - feat: Add window watchdog implementation based on WWDT0, WWDT1 peripherals (#4574)
 - feat: Add MSPM0C1105/C1106 support
+- feat: Add adc implementation (#4646)

embassy-mspm0/build.rs

@@ -68,6 +68,7 @@ fn generate_code() {
     g.extend(generate_pin_trait_impls());
     g.extend(generate_groups());
     g.extend(generate_dma_channel_count());
+    g.extend(generate_adc_constants(&mut cfgs));
 
     let out_dir = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
     let out_file = out_dir.join("_generated.rs").to_string_lossy().to_string();
@@ -220,6 +221,22 @@ fn generate_dma_channel_count() -> TokenStream {
     quote! { pub const DMA_CHANNELS: usize = #count; }
 }
 
+fn generate_adc_constants(cfgs: &mut CfgSet) -> TokenStream {
+    let vrsel = METADATA.adc_vrsel;
+    let memctl = METADATA.adc_memctl;
+
+    cfgs.declare("adc_neg_vref");
+    match vrsel {
+        3 => (),
+        5 => cfgs.enable("adc_neg_vref"),
+        _ => panic!("Unsupported ADC VRSEL value: {vrsel}"),
+    }
+    quote! {
+        pub const ADC_VRSEL: u8 = #vrsel;
+        pub const ADC_MEMCTL: u8 = #memctl;
+    }
+}
+
 #[derive(Debug, Clone)]
 struct Singleton {
     name: String,
@@ -561,6 +578,7 @@ fn generate_peripheral_instances() -> TokenStream {
             "uart" => Some(quote! { impl_uart_instance!(#peri); }),
             "i2c" => Some(quote! { impl_i2c_instance!(#peri, #fifo_size); }),
             "wwdt" => Some(quote! { impl_wwdt_instance!(#peri); }),
+            "adc" => Some(quote! { impl_adc_instance!(#peri); }),
             _ => None,
         };
 
@@ -609,6 +627,10 @@ fn generate_pin_trait_impls() -> TokenStream {
                 ("uart", "RTS") => Some(quote! { impl_uart_rts_pin!(#peri, #pin_name, #pf); }),
                 ("i2c", "SDA") => Some(quote! { impl_i2c_sda_pin!(#peri, #pin_name, #pf); }),
                 ("i2c", "SCL") => Some(quote! { impl_i2c_scl_pin!(#peri, #pin_name, #pf); }),
+                ("adc", s) => {
+                    let signal = s.parse::<u8>().unwrap();
+                    Some(quote! { impl_adc_pin!(#peri, #pin_name, #signal); })
+                }
 
                 _ => None,
             };