fix: I2C transaction continued read broken (atsamd-rs#858)

Sympatron · Sympatron · commit f33d02752fce · 2025-05-05T13:41:27.000Z
diff --git a/hal/src/sercom/i2c/reg.rs b/hal/src/sercom/i2c/reg.rs
@@ -478,6 +478,8 @@ impl<S: Sercom> Registers<S> {
     /// without a repeated start condition in between
     #[inline]
     pub(super) fn continue_read(&mut self, buffer: &mut [u8]) -> Result<(), Error> {
+        // Ensure the next read is properly initialized
+        self.cmd_read();
         self.fill_buffer(buffer)
     }
 

Original file line number	Diff line number	Diff line change
`@@ -478,6 +478,8 @@ impl<S: Sercom> Registers<S> {`
`478`	`478`	`/// without a repeated start condition in between`
`479`	`479`	`#[inline]`
`480`	`480`	`pub(super) fn continue_read(&mut self, buffer: &mut [u8]) -> Result<(), Error> {`
	`481`	`+ // Ensure the next read is properly initialized`
	`482`	`+ self.cmd_read();`
`481`	`483`	`self.fill_buffer(buffer)`
`482`	`484`	`}`
`483`	`485`