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usbcdc: increased ringbuffer size

This commit is contained in:
schneider 2011-12-23 00:33:09 +01:00
parent 68148e38c3
commit 3904870f32
1 changed files with 3 additions and 1 deletions
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4
firmware/usbcdc/cdcuser.c
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@ -41,7 +41,7 @@ volatile unsigned char CDC_DepInEmpty = 1; // Data IN EP is
much faster than UART transmits much faster than UART transmits
*---------------------------------------------------------------------------*/ *---------------------------------------------------------------------------*/
/* Buffer masks */ /* Buffer masks */
#define CDC_BUF_SIZE (64) // Output buffer in bytes (power 2) #define CDC_BUF_SIZE (128) // Output buffer in bytes (power 2)
// large enough for file transfer // large enough for file transfer
#define CDC_BUF_MASK (CDC_BUF_SIZE-1ul) #define CDC_BUF_MASK (CDC_BUF_SIZE-1ul)
@ -342,6 +342,8 @@ void CDC_BulkIn(void)
{ {
int numBytesRead, numBytesAvail; int numBytesRead, numBytesAvail;
CDC_InBufAvailChar(&numBytesAvail); CDC_InBufAvailChar(&numBytesAvail);
if( numBytesAvail > 64 )
numBytesAvail = 64;
numBytesRead = CDC_RdInBuf((char*)&BulkBufIn[0], &numBytesAvail); numBytesRead = CDC_RdInBuf((char*)&BulkBufIn[0], &numBytesAvail);
// send over USB // send over USB
if (numBytesRead > 0) { if (numBytesRead > 0) {