diff options
| -rw-r--r-- | wirish/usb_serial.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/wirish/usb_serial.cpp b/wirish/usb_serial.cpp index c066112..fafdf49 100644 --- a/wirish/usb_serial.cpp +++ b/wirish/usb_serial.cpp @@ -46,6 +46,9 @@ void USBSerial::end(void) { } void USBSerial::write(uint8 ch) { + if(!(usbIsConnected() && usbIsConfigured())) { + return; + } uint16 status = 0; uint32 start = millis(); while(status == 0 && (millis() - start <= USB_TIMEOUT)) { @@ -54,6 +57,9 @@ void USBSerial::write(uint8 ch) { } void USBSerial::write(const char *str) { + if(!(usbIsConnected() && usbIsConfigured())) { + return; + } uint32 len = strlen(str); uint16 status = 0; uint16 oldstatus = 0; @@ -67,9 +73,12 @@ void USBSerial::write(const char *str) { } void USBSerial::write(void *buf, uint32 size) { - if (!buf) { - return; - } + if(!(usbIsConnected() && usbIsConfigured())) { + return; + } + if (!buf) { + return; + } uint16 status = 0; uint16 oldstatus = 0; uint32 start = millis(); |