diff options
| -rw-r--r-- | libmaple/usb/usb.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libmaple/usb/usb.c b/libmaple/usb/usb.c index 617c1ee..651b36e 100644 --- a/libmaple/usb/usb.c +++ b/libmaple/usb/usb.c @@ -376,21 +376,25 @@ uint32 usbBytesAvailable(void) { will only copy the minimum of len or the available bytes. returns the number of bytes copied */ uint32 usbReceiveBytes(uint8* recvBuf, uint32 len) { + static int offset = 0; + if (len > newBytes) { len = newBytes; } int i; for (i=0;i<len;i++) { - recvBuf[i] = (uint8)(vcomBufferRx[i]); + recvBuf[i] = (uint8)(vcomBufferRx[i+offset]); } newBytes -= len; + offset += len; /* re-enable the rx endpoint which we had set to receive 0 bytes */ if (newBytes == 0) { SetEPRxCount(VCOM_RX_ENDP,VCOM_RX_EPSIZE); SetEPRxStatus(VCOM_RX_ENDP,EP_RX_VALID); + offset = 0; } return len; |