core/usbcdc/cdc_buf.h

   1 /*----------------------------------------------------------------------------
   2  *      Name:    cdc_buf.h
   3  *      Purpose: usb cdc buffer handling
   4  *      Version: V1.00
   5  *---------------------------------------------------------------------------*/
   6
   7 #ifndef __CDC_BUF_H__
   8 #define __CDC_BUF_H__
   9
  10 #include "projectconfig.h"
  11
  12 // Buffer used for circular fifo
  13 typedef struct _cdc_buffer_t
  14 {
  15   volatile uint8_t len;
  16   volatile uint8_t wr_ptr;
  17   volatile uint8_t rd_ptr;
  18   uint8_t buf[CFG_USBCDC_BUFFERSIZE];
  19 } cdc_buffer_t;
  20
  21 cdc_buffer_t * cdcGetBuffer();
  22 void           cdcBufferInit();
  23 uint8_t        cdcBufferRead();
  24 uint32_t       cdcBufferReadLen(uint8_t* buf, uint32_t len);
  25 void           cdcBufferWrite(uint8_t data);
  26 void           cdcBufferClearFIFO();
  27 uint8_t        cdcBufferDataPending();
  28
  29 #endif