Paparazzi UAS  v5.2.2_stable-0-gd6b9f29
Paparazzi is a free software Unmanned Aircraft System.
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Modules Pages
hmc5843_arch.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2010 Antoine Drouin <poinix@gmail.com>
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 #include "peripherals/hmc5843.h"
22 
23 #include <libopencm3/stm32/gpio.h>
24 #include <libopencm3/stm32/rcc.h>
25 #include <libopencm3/stm32/spi.h>
26 #include <libopencm3/stm32/exti.h>
27 #include <libopencm3/cm3/nvic.h>
28 
29 #include "mcu_periph/i2c.h"
30 
31 #ifndef STM32F1
32 #error "HMC5843 arch currently only implemented for STM32F1"
33 #endif
34 
35 void hmc5843_arch_init( void ) {
36  /* configure external interrupt exti5 on PB5( mag int ) */
37  rcc_periph_clock_enable(RCC_GPIOB);
38  rcc_periph_clock_enable(RCC_AFIO);
39  gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
40  GPIO_CNF_INPUT_FLOAT, GPIO5);
41 
42 #ifdef HMC5843_USE_INT
43  exti_select_source(EXTI5, GPIOB);
44  exti_set_trigger(EXTI5, EXTI_TRIGGER_FALLING);
45  exti_enable_request(EXTI5);
46 
47  nvic_set_priority(NVIC_EXTI9_5_IRQ, 0x0f);
48  nvic_enable_irq(NVIC_EXTI9_5_IRQ);
49 #endif
50 }
51 
53 {
54  i2c2_er_irq_handler();
55 }
56 
57 void exti9_5_isr(void) {
58 
59  exti_reset_request(EXTI5);
60 }
#define GPIOB
Definition: gpio_arch.h:35
#define GPIO5
Definition: gpio_arch.h:42
void hmc5843_arch_init(void)
Definition: hmc5843_arch.c:24
void exti9_5_isr(void)
Definition: hmc5843_arch.c:57
void hmc5843_arch_reset(void)
Definition: hmc5843_arch.c:52
#define NVIC_EXTI9_5_IRQ
Architecture independent I2C (Inter-Integrated Circuit Bus) API.