armsrc/usart.h

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // See LICENSE.txt for the text of the license.
  15 //-----------------------------------------------------------------------------
  16 #ifndef __USART_H
  17 #define __USART_H
  18
  19 #include "common.h"
  20 #include "usart_defs.h"
  21
  22 // Higher baudrates are pointless, only increasing overflow risk
  23
  24 extern uint32_t g_usart_baudrate;
  25 extern uint8_t g_usart_parity;
  26
  27 void usart_init(uint32_t baudrate, uint8_t parity);
  28 int usart_writebuffer_sync(uint8_t *data, size_t len);
  29 uint32_t usart_read_ng(uint8_t *data, size_t len);
  30 uint16_t usart_rxdata_available(void);
  31
  32 #endif