diff options
Diffstat (limited to 'shared/tinyusb/mp_usbd_cdc.c')
| -rw-r--r-- | shared/tinyusb/mp_usbd_cdc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/shared/tinyusb/mp_usbd_cdc.c b/shared/tinyusb/mp_usbd_cdc.c index 63d015cb46..c6a88e467d 100644 --- a/shared/tinyusb/mp_usbd_cdc.c +++ b/shared/tinyusb/mp_usbd_cdc.c @@ -95,6 +95,9 @@ void tud_cdc_rx_cb(uint8_t itf) { } mp_uint_t mp_usbd_cdc_tx_strn(const char *str, mp_uint_t len) { + if (!tusb_inited()) { + return 0; + } size_t i = 0; while (i < len) { uint32_t n = len - i; |