airbourne/airbourne/examples/time/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 "led.h"
33 #include "printf.h"
34 #include "revo_f4.h"
35 #include "vcp.h"
36 
38 
39 static void _putc(void* p, char c)
40 {
41  (void)p; // avoid compiler warning about unused variable
42  uartPtr->put_byte(c);
43 }
44 
45 int main()
46 {
47  systemInit();
48 
49  VCP vcp;
50  vcp.init();
51  uartPtr = &vcp;
52 
54 
55  LED warn;
56  warn.init(LED1_GPIO, LED1_PIN);
57  LED info;
58  info.init(LED2_GPIO, LED2_PIN);
59 
60  info.off();
61  warn.on();
62 
63  const int size = 9;
64  uint32_t delays[] = {1000, 100, 31, 2000000, 8000, 29238, 1900, 394177, 1923984};
65  uint32_t time[size];
66  uint32_t supposed[size];
67 
68  while (1)
69  {
70  warn.toggle();
71  info.toggle();
72  uint64_t start = micros();
73  uint64_t sum = 0;
74  delayMicroseconds(delays[0]);
75  sum += delays[0];
76  supposed[0] = sum;
77  time[0] = micros() - start;
78 
79  delayMicroseconds(delays[1]);
80  sum += delays[1];
81  supposed[1] = sum;
82  time[1] = micros() - start;
83 
84  delayMicroseconds(delays[2]);
85  sum += delays[2];
86  supposed[2] = sum;
87  time[2] = micros() - start;
88 
89  delayMicroseconds(delays[3]);
90  sum += delays[3];
91  supposed[3] = sum;
92  time[3] = micros() - start;
93  // for (int i = 0; i < size; i++)
94  // {
95  // delayMicroseconds(delays[i % size]);
96  // sum += delays[i % size];
97  // supposed[i] = sum;
98  // time[i] = micros() - start;
99  // }
100 
101  for (int i = 0; i < 4; i++)
102  {
103  printf("now_us: %lu, delays_us: %lu\n", supposed[i], time[i]);
104  }
105  }
106 }
void systemInit(void)
Definition: system.c:55
void toggle(void)
Definition: gpio.cpp:52
ROSCPP_DECL void start()
void init(GPIO_TypeDef *gpio_port, uint16_t pin)
Definition: led.cpp:34
void delayMicroseconds(uint32_t us)
Definition: system.c:94
#define LED2_PIN
Definition: revo_f4.h:129
void init()
Definition: vcp.cpp:24
#define LED2_GPIO
Definition: revo_f4.h:128
Definition: led.h:38
volatile uint64_t micros(void)
Definition: system.c:44
#define LED1_GPIO
Definition: revo_f4.h:126
#define LED1_PIN
Definition: revo_f4.h:127
void put_byte(uint8_t ch) override
Definition: vcp.cpp:102
void on()
Definition: led.cpp:39
Definition: vcp.h:19
static void _putc(void *p, char c)
#define NULL
Definition: usbd_def.h:50
void init_printf(void *putp, void(*putf)(void *, char))
Definition: printf.cpp:264
void off()
Definition: led.cpp:44


rosflight_firmware
Author(s): Daniel Koch , James Jackson
autogenerated on Sat May 9 2020 03:16:52