Paparazzi UAS  v5.0.5_stable-7-g4b8bbb7
Paparazzi is a free software Unmanned Aircraft System.
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Modules Pages
baro_board.c
Go to the documentation of this file.
1  /*
2  * Copyright (C) 2010 ENAC
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  */
22 
23 
24 /* driver for the analog Barometer Mpxa6115 using ADC ads1114 (16 bits I2C 860SpS max) from Texas instruments
25  * Navarro & Gorraz & Hattenberger
26  */
27 
29 
30 
31 /* Common Baro struct */
32 struct Baro baro;
33 
34 /* Counter to init ads1114 at startup */
35 #define BARO_STARTUP_COUNTER 200
37 
38 void baro_init( void ) {
39  ads1114_init();
41  baro.absolute = 0;
42  baro.differential = 0; /* not handled on this board, use extra module (ex: airspeed_ads1114) */
44 }
45 
46 void baro_periodic( void ) {
47 
48  if (baro.status == BS_UNINITIALIZED && BARO_ABS_ADS.data_available) {
49  // Run some loops to get correct readings from the adc
50  --startup_cnt;
51  BARO_ABS_ADS.data_available = FALSE;
52  if (startup_cnt == 0) {
54  }
55  }
56  // Read the ADC
58 }
59 
unsigned short uint16_t
Definition: types.h:16
uint16_t startup_cnt
Definition: baro_board.c:40
Common barometric sensor implementation.
Definition: baro.h:40
#define BARO_STARTUP_COUNTER
Definition: baro_board.c:35
void baro_init(void)
Definition: baro_board.c:42
void ads1114_read(struct ads1114_periph *p)
Definition: ads1114.c:62
#define FALSE
Definition: imu_chimu.h:141
void baro_periodic(void)
Definition: baro_board.c:50
void ads1114_init(void)
Definition: ads1114.c:37
int32_t absolute
Definition: baro.h:41
int32_t differential
Definition: baro.h:42
struct Baro baro
Definition: baro_board.c:36
enum BaroStatus status
Definition: baro.h:43
#define BARO_ABS_ADS
Definition: baro_board.h:40