change DEBUG optimization option from O0 to Og

add uart write to board test example

1 files changed, 9 insertions, 0 deletions

diff --git a/examples/device/board_test/src/main.c b/examples/device/board_test/src/main.c
index 0126110ed..16aad95f8 100644
--- a/examples/device/board_test/src/main.c
+++ b/examples/device/board_test/src/main.c
@@ -42,6 +42,8 @@ enum  {
   BLINK_UNPRESSED = 1000
 };
 
+#define HELLO_STR   "Hello from TinyUSB\n"
+
 int main(void)
 {
   board_init();
@@ -49,13 +51,20 @@ int main(void)
   uint32_t start_ms = 0;
   bool led_state = false;
 
+
   while (1)
   {
     uint32_t interval_ms = board_button_read() ? BLINK_PRESSED : BLINK_UNPRESSED;
 
+    // uart echo
+//    uint8_t ch;
+//    if ( board_uart_read(&ch, 1) ) board_uart_write(&ch, 1);
+
     // Blink every interval ms
     if ( !(board_millis() - start_ms < interval_ms) )
     {
+      board_uart_write(HELLO_STR, strlen(HELLO_STR));
+
       start_ms = board_millis();
 
       board_led_write(led_state);