update uart read for lpc18/43 for testing

2022-11-18 21:50:00 +07:00
parent b00529e287
commit a6001fc8f2
6 changed files with 17 additions and 10 deletions
--- a/examples/device/board_test/src/main.c
+++ b/examples/device/board_test/src/main.c
@@ -56,7 +56,7 @@ int main(void)
  {
    uint32_t interval_ms = board_button_read() ? BLINK_PRESSED : BLINK_UNPRESSED;

-    // Blink every interval ms
+    // Blink and print every interval ms
    if ( !(board_millis() - start_ms < interval_ms) )
    {
      board_uart_write(HELLO_STR, strlen(HELLO_STR));
@@ -66,6 +66,13 @@ int main(void)
      board_led_write(led_state);
      led_state = 1 - led_state; // toggle
    }
+
+    // echo
+    uint8_t ch;
+    if ( board_uart_read(&ch, 1) )
+    {
+      board_uart_write(&ch, 1);
+    }
  }

  return 0;