Paparazzi UAS  v5.0.5_stable-7-g4b8bbb7
Paparazzi is a free software Unmanned Aircraft System.
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uart_arch.h
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1 /*
2  * Copyright (C) 2012 The Paparazzi Team
3  *
4  * This file is part of paparazzi.
5  *
6  * paparazzi is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2, or (at your option)
9  * any later version.
10  *
11  * paparazzi is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with paparazzi; see the file COPYING. If not, write to
18  * the Free Software Foundation, 59 Temple Place - Suite 330,
19  * Boston, MA 02111-1307, USA.
20  */
21 
27 #include <stdbool.h>
28 #include <inttypes.h>
29 #include <stdio.h>
30 #include <sys/select.h>
31 #include <unistd.h>
32 #include <assert.h>
33 
34 #define STDINOUT_BUFFER_SIZE 256
35 #define FD_STDIN 0
36 
40 
41 
42 static inline bool StdInOutChAvailable(void) {
43  struct timeval tv;
44  fd_set fds;
45  tv.tv_sec = 0;
46  tv.tv_usec = 0;
47  FD_ZERO(&fds);
48  FD_SET(FD_STDIN, &fds);
49  select(1, &fds, NULL, NULL, &tv);
50  if (FD_ISSET(FD_STDIN, &fds)) {
51  char tmp_buf[STDINOUT_BUFFER_SIZE];
52  uint8_t n = read(FD_STDIN, tmp_buf, STDINOUT_BUFFER_SIZE);
53  unsigned int i;
54  for(i = 0; i < n; i++) {
56  stdinout_rx_insert_idx++; /* Auto overflow */
57  }
58  }
60 }
61 
62 #define StdInOutTransmit(_char) putchar(_char)
63 #define StdInOutGetch() ({ \
64  assert(stdinout_rx_insert_idx != stdinout_rx_extract_idx); \
65  stdinout_buffer[stdinout_rx_extract_idx++]; \
66 })
uint8_t stdinout_rx_insert_idx
Definition: sim_uart_hw.c:4
#define FD_STDIN
Definition: uart_arch.h:35
char stdinout_buffer[STDINOUT_BUFFER_SIZE]
Definition: sim_uart_hw.c:3
#define STDINOUT_BUFFER_SIZE
Definition: uart_arch.h:34
unsigned char uint8_t
Definition: types.h:14
uint8_t stdinout_rx_extract_idx
Definition: sim_uart_hw.c:5
static bool StdInOutChAvailable(void)
Definition: uart_arch.h:42