diff options
| -rw-r--r-- | ports/esp32/usb.c | 3 | ||||
| -rw-r--r-- | ports/esp32/usb.h | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/ports/esp32/usb.c b/ports/esp32/usb.c index 5a613d244..953c5422b 100644 --- a/ports/esp32/usb.c +++ b/ports/esp32/usb.c @@ -88,7 +88,8 @@ void usb_init(void) { void usb_tx_strn(const char *str, size_t len) { // Write out the data to the CDC interface, but only while the USB host is connected. - while (usb_cdc_connected && len) { + uint64_t timeout = esp_timer_get_time() + (uint64_t)(MICROPY_HW_USB_CDC_TX_TIMEOUT * 1000); + while (usb_cdc_connected && len && esp_timer_get_time() < timeout) { size_t l = tinyusb_cdcacm_write_queue(CDC_ITF, (uint8_t *)str, len); str += l; len -= l; diff --git a/ports/esp32/usb.h b/ports/esp32/usb.h index a10378033..009bf4262 100644 --- a/ports/esp32/usb.h +++ b/ports/esp32/usb.h @@ -26,6 +26,8 @@ #ifndef MICROPY_INCLUDED_ESP32_USB_H #define MICROPY_INCLUDED_ESP32_USB_H +#define MICROPY_HW_USB_CDC_TX_TIMEOUT (500) + void usb_init(void); void usb_tx_strn(const char *str, size_t len); |