diff options
| -rw-r--r-- | supervisor/shared/serial.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/supervisor/shared/serial.c b/supervisor/shared/serial.c index cd20b5c26..c57688ddc 100644 --- a/supervisor/shared/serial.c +++ b/supervisor/shared/serial.c @@ -48,6 +48,9 @@ bool serial_bytes_available(void) { } void serial_write_substring(const char* text, uint32_t length) { + if (!tud_cdc_connected()) { + return; + } uint32_t count = 0; while (count < length) { count += tud_cdc_write(text + count, length - count); |