airbourne/airbourne/examples/i2c_airspeed/main.cpp
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1 /*
2  * Copyright (c) 2017, James Jackson
3  *
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * * Redistributions of source code must retain the above copyright notice, this
10  * list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright notice,
13  * this list of conditions and the following disclaimer in the documentation
14  * and/or other materials provided with the distribution.
15  *
16  * * Neither the name of the copyright holder nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
27  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include "system.h"
33 #include "i2c.h"
34 #include "ms4525.h"
35 #include "led.h"
36 #include "vcp.h"
37 #include "printf.h"
38 #include "revo_f4.h"
39 
41 
42 static void _putc(void *p, char c)
43 {
44  (void)p; // avoid compiler warning about unused variable
45  uartPtr->put_byte(c);
46 }
47 
48 int main() {
49 
50  systemInit();
51 
52  VCP vcp;
53  vcp.init();
54  uartPtr = &vcp;
56 
57  LED warn;
58  warn.init(LED1_GPIO, LED1_PIN);
59  LED info;
60  info.init(LED2_GPIO, LED2_PIN);
61 
62  delay(500);
63 
64  info.on();
65  I2C i2c1;
67  MS4525 airspeed;
68 
69 
70  if (!airspeed.init(&i2c1))
71  {
72  warn.on();
73  delay(100);
74  warn.off();
75  }
76 
77  float diff_press(0), temp(0);
78  uint32_t last_print_ms = 0;
79  while(1) {
80  info.on();
81  airspeed.update();
82  if (airspeed.present())
83  {
84  airspeed.read(&diff_press, &temp);
85  warn.off();
86  }
87  else
88  {
89  warn.on();
90  }
91 
92  if (millis() > last_print_ms + 50)
93  {
94  last_print_ms = millis();
95  printf("%d.%dPa, %d.%dC\n",
96  (int32_t)(diff_press), (int32_t)(diff_press*1000)%1000,
97  (int32_t)(temp), (int32_t)(temp*1000)%1000);
98  }
99  }
100 }
void systemInit(void)
Definition: system.c:55
bool present()
Definition: ms4525.cpp:57
#define printf
Definition: printf.h:119
volatile uint32_t millis(void)
Definition: system.c:50
void init(GPIO_TypeDef *gpio_port, uint16_t pin)
Definition: led.cpp:34
#define LED2_PIN
Definition: revo_f4.h:134
void init(const i2c_hardware_struct_t *c)
Definition: i2c.cpp:53
void init()
Definition: vcp.cpp:24
#define LED2_GPIO
Definition: revo_f4.h:133
Definition: led.h:38
#define LED1_GPIO
Definition: revo_f4.h:131
#define LED1_PIN
Definition: revo_f4.h:132
static volatile int16_t temp
Definition: drv_mpu6050.c:278
void put_byte(uint8_t ch) override
Definition: vcp.cpp:106
void on()
Definition: led.cpp:39
static void _putc(void *p, char c)
Definition: vcp.h:20
void init_printf(void *putp, void(*putf)(void *, char))
Definition: printf.cpp:245
void update()
Definition: ms4525.cpp:64
#define EXTERNAL_I2C
Definition: revo_f4.h:128
Definition: i2c.h:40
Definition: ms4525.h:35
#define NULL
Definition: usbd_def.h:50
bool init(I2C *_i2c)
Definition: ms4525.cpp:43
void read(float *differential_pressure, float *temp)
Definition: ms4525.cpp:84
void off()
Definition: led.cpp:44
const i2c_hardware_struct_t i2c_config[NUM_I2C]
Definition: revo_f4.h:120
void delay(uint32_t ms)
Definition: system.c:98


rosflight_firmware
Author(s): Daniel Koch , James Jackson
autogenerated on Thu Oct 24 2019 03:17:18