fix issue with exmaple

2 files changed, 9 insertions, 14 deletions

diff --git a/examples/host/cdc_msc_hid/src/cdc_app.c b/examples/host/cdc_msc_hid/src/cdc_app.c
index c897bdd06..20033981e 100644
--- a/examples/host/cdc_msc_hid/src/cdc_app.c
+++ b/examples/host/cdc_msc_hid/src/cdc_app.c
@@ -43,14 +43,10 @@ static size_t console_read(uint8_t *buf, size_t bufsize) {
 }
 
 static size_t console_write(const uint8_t *buf, size_t bufsize) {
-  size_t count = 0;
-  while (count < bufsize) {
-    if (board_putchar((int)buf[count]) < 0) {
-      break;
-    }
-    count++;
-  }
-  return count;
+  // Use board_uart_write directly for non-blocking behavior.
+  // board_putchar -> sys_write has a blocking retry loop that causes UART RX overrun.
+  int wr = board_uart_write(buf, (int) bufsize);
+  return (wr > 0) ? (size_t) wr : 0;
 }
 
 // forward from console to usbh
@@ -78,7 +74,7 @@ void cdc_app_task(void) {
   do {
     // uart write is slow, while waiting forward uart -> usbh else uart rx can be overflow
     if (count) {
-      wr += console_write(buf + wr, count);
+      wr += console_write(buf + wr, count - wr);
     }
     console_to_usbh(idx);
   } while (wr < count);
diff --git a/test/hil/hil_test.py b/test/hil/hil_test.py
index 40779d1a4..f23e2fc22 100755
--- a/test/hil/hil_test.py
+++ b/test/hil/hil_test.py
@@ -1189,9 +1189,8 @@ def test_example(board, f1, example):
         print(f'Flashing {fw_name}.elf')
 
     # flash firmware. It may fail randomly, retry a few times
-    max_rety = max_retry
     start_s = time.time()
-    for i in range(max_rety):
+    for i in range(max_retry):
         ret = globals()[f'flash_{board["flasher"]["name"].lower()}'](board, fw_name)
         if ret.returncode == 0:
             try:
@@ -1202,14 +1201,14 @@ def test_example(board, f1, example):
                     print('  OK', end='')
                 break
             except Exception as e:
-                if i == max_rety - 1:
+                if i == max_retry - 1:
                     err_count += 1
                     print(f'{STATUS_FAILED}: {e}')
                 else:
-                    print(f'\n  Test failed: {e}, retry {i+2}/{max_rety}', end='')
+                    print(f'\n  Test failed: {e}, retry {i+2}/{max_retry}', end='')
                     time.sleep(0.5)
         else:
-            print(f'\n  Flash failed, retry {i+2}/{max_rety}', end='')
+            print(f'\n  Flash failed, retry {i+2}/{max_retry}', end='')
             time.sleep(0.5)
 
     if ret.returncode != 0: