Paparazzi UAS  v5.0.5_stable-7-g4b8bbb7
Paparazzi is a free software Unmanned Aircraft System.
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ppm_arch.h
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1 /*
2  * Copyright (C) 2010 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 
22 #ifndef PPM_ARCH_H
23 #define PPM_ARCH_H
24 
25 
26 #include "LPC21xx.h"
27 #include BOARD_CONFIG
28 
29 #include "mcu_periph/sys_time.h"
30 
37 #define RC_PPM_TICKS_OF_USEC(_v) cpu_ticks_of_usec(_v)
38 #define RC_PPM_SIGNED_TICKS_OF_USEC(_v) signed_cpu_ticks_of_usec(_v)
39 #define USEC_OF_RC_PPM_TICKS(_v) usec_of_cpu_ticks(_v)
40 
41 #define PPM_NB_CHANNEL RADIO_CONTROL_NB_CHANNEL
42 
43 #define PPM_IT PPM_CRI
44 
45 #define PPM_ISR() { \
46  uint32_t now = PPM_CR; \
47  DecodePpmFrame(now); \
48 }
49 
50 #ifdef USE_PPM_RSSI_GPIO
51 #define RssiValid() (bit_is_set(PPM_RSSI_IOPIN, PPM_RSSI_PIN) == PPM_RSSI_VALID_LEVEL)
52 #endif
53 
54 
55 #endif /* PPM_ARCH_H */
Architecture independent timing functions.