1 files changed, 5 insertions, 7 deletions
diff --git a/libmaple/usb/usb.c b/libmaple/usb/usb.c
index 7b1dd4c..b34c4b6 100644
--- a/libmaple/usb/usb.c
+++ b/libmaple/usb/usb.c
@@ -343,23 +343,21 @@ void usbBlockingSendByte(char ch) {
     countTx = 1;
     while (countTx);
 }
-uint32 usbSendBytes(uint8* sendBuf, uint32 len) {
-  /* any checks on connection (via dtr/rts) done upstream in wirish or
-     by user */
 
-  /* last xmit hasnt finished, abort */
+uint32 usbSendBytes(const uint8* sendBuf, uint32 len) {
+  /* Last transmission hasn't finished, abort */
   if (countTx) {
     return 0;
   }
 
   // We can only put VCOM_TX_EPSIZE bytes in the buffer
-  if(len > VCOM_TX_EPSIZE/2) {
-    len = VCOM_TX_EPSIZE/2;
+  if (len > VCOM_TX_EPSIZE / 2) {
+    len = VCOM_TX_EPSIZE / 2;
   }
 
   // Try to load some bytes if we can
   if (len) {
-    UserToPMABufferCopy(sendBuf,VCOM_TX_ADDR, len);
+    UserToPMABufferCopy(sendBuf, VCOM_TX_ADDR, len);
     _SetEPTxCount(VCOM_TX_ENDP, len);
     countTx += len;
     _SetEPTxValid(VCOM_TX_ENDP);