check for error in WriteByte call to writeByte

tinygo-org · Jul 14, 2023 · c84bdd0 · c84bdd0
1 parent 90cbe52
commit c84bdd0
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/src/machine/uart.go b/src/machine/uart.go
@@ -73,8 +73,11 @@ func (uart *UART) WriteByte(c byte) error {
 // Write data over the UART's Tx.
 // This function blocks until the data is finished being sent.
 func (uart *UART) Write(data []byte) (n int, err error) {
-	for _, v := range data {
-		uart.writeByte(v)
+	for i, v := range data {
+		err = uart.writeByte(v)
+		if err != nil {
+			return i, err
+		}
 	}
 	uart.flush() // flush() blocks until all data has been transmitted.
 	return len(data), nil