ST / Mbed OS HelloWorld_LED61A1_mbedOS

Simple test application for the STMicroelectronics X-NUCLEO-LED61A1 LED Control Expansion Board, built against mbed OS.

Dependencies:   X_NUCLEO_LED61A1

Fork of HelloWorld_LED61A1 by ST

main.cpp@18:9a815b31ba7d, 2017-07-03 (annotated)

Committer:
Davidroid
Date:
Mon Jul 03 11:50:37 2017 +0000
Revision:
18:9a815b31ba7d
Parent:
16:0d6f96345c56 
mbedOS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Davidroid 0:f5a41692e1fb 1 /**
Davidroid 0:f5a41692e1fb 2 ******************************************************************************
Davidroid 0:f5a41692e1fb 3 * @file main.cpp
Davidroid 6:899828fd9d9d 4 * @author Davide Aliprandi, STMicroelectronics
Davidroid 0:f5a41692e1fb 5 * @version V1.0.0
Davidroid 7:7a608b07fa9f 6 * @date February 4h, 2016
Davidroid 6:899828fd9d9d 7 * @brief mbed test application for the STMicroelectronics X-NUCLEO-LED61A1
Davidroid 0:f5a41692e1fb 8 * LED expansion board.
Davidroid 0:f5a41692e1fb 9 ******************************************************************************
Davidroid 0:f5a41692e1fb 10 * @attention
Davidroid 0:f5a41692e1fb 11 *
Davidroid 0:f5a41692e1fb 12 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
Davidroid 0:f5a41692e1fb 13 *
Davidroid 0:f5a41692e1fb 14 * Redistribution and use in source and binary forms, with or without modification,
Davidroid 0:f5a41692e1fb 15 * are permitted provided that the following conditions are met:
Davidroid 0:f5a41692e1fb 16 * 1. Redistributions of source code must retain the above copyright notice,
Davidroid 0:f5a41692e1fb 17 * this list of conditions and the following disclaimer.
Davidroid 0:f5a41692e1fb 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
Davidroid 0:f5a41692e1fb 19 * this list of conditions and the following disclaimer in the documentation
Davidroid 0:f5a41692e1fb 20 * and/or other materials provided with the distribution.
Davidroid 0:f5a41692e1fb 21 * 3. Neither the name of STMicroelectronics nor the names of its contributors
Davidroid 0:f5a41692e1fb 22 * may be used to endorse or promote products derived from this software
Davidroid 0:f5a41692e1fb 23 * without specific prior written permission.
Davidroid 0:f5a41692e1fb 24 *
Davidroid 0:f5a41692e1fb 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Davidroid 0:f5a41692e1fb 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Davidroid 0:f5a41692e1fb 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Davidroid 0:f5a41692e1fb 28 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
Davidroid 0:f5a41692e1fb 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
Davidroid 0:f5a41692e1fb 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
Davidroid 0:f5a41692e1fb 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
Davidroid 0:f5a41692e1fb 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
Davidroid 0:f5a41692e1fb 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Davidroid 0:f5a41692e1fb 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Davidroid 0:f5a41692e1fb 35 *
Davidroid 0:f5a41692e1fb 36 ******************************************************************************
Davidroid 0:f5a41692e1fb 37 */
Davidroid 0:f5a41692e1fb 38
Davidroid 0:f5a41692e1fb 39
Davidroid 0:f5a41692e1fb 40 /* Includes ------------------------------------------------------------------*/
Davidroid 0:f5a41692e1fb 41
Davidroid 0:f5a41692e1fb 42 /* mbed specific header files. */
Davidroid 0:f5a41692e1fb 43 #include "mbed.h"
Davidroid 18:9a815b31ba7d 44 #include "rtos.h"
Davidroid 0:f5a41692e1fb 45
Davidroid 1:1c01b873ad45 46 /* Component specific header files. */
Davidroid 16:0d6f96345c56 47 #include "Led6001.h"
Davidroid 1:1c01b873ad45 48
Davidroid 1:1c01b873ad45 49
Davidroid 1:1c01b873ad45 50 /* Definitions ---------------------------------------------------------------*/
Davidroid 1:1c01b873ad45 51
Davidroid 3:ed347127fc38 52 /* PI. */
Davidroid 3:ed347127fc38 53 #ifndef M_PI
Davidroid 14:c1a43abb901f 54 #define M_PI (3.14159265358979323846f)
Davidroid 3:ed347127fc38 55 #endif
Davidroid 3:ed347127fc38 56
Davidroid 2:dbd596540d46 57 /* Loop period in micro-seconds. */
Davidroid 14:c1a43abb901f 58 #define LOOP_PERIOD_us (5E5) /* 0.5 seconds. */
Davidroid 3:ed347127fc38 59
Davidroid 3:ed347127fc38 60 /* Sin period in micro-seconds. */
Davidroid 14:c1a43abb901f 61 #define PWM_SIN_PERIOD_us (1E7) /* 10 seconds. */
Davidroid 1:1c01b873ad45 62
Davidroid 1:1c01b873ad45 63
Davidroid 1:1c01b873ad45 64 /* Variables -----------------------------------------------------------------*/
Davidroid 1:1c01b873ad45 65
Davidroid 2:dbd596540d46 66 /* Main loop's ticker. */
Davidroid 2:dbd596540d46 67 static Ticker ticker;
Davidroid 1:1c01b873ad45 68
Davidroid 2:dbd596540d46 69 /* LED Control Component. */
Davidroid 16:0d6f96345c56 70 Led6001 *led;
Davidroid 2:dbd596540d46 71
Davidroid 2:dbd596540d46 72 /* Interrupt flags. */
Davidroid 14:c1a43abb901f 73 static volatile bool ticker_irq_triggered = false;
Davidroid 14:c1a43abb901f 74 static volatile bool xfault_irq_triggered = false;
Davidroid 1:1c01b873ad45 75
Davidroid 1:1c01b873ad45 76
Davidroid 1:1c01b873ad45 77 /* Functions -----------------------------------------------------------------*/
Davidroid 1:1c01b873ad45 78
Davidroid 1:1c01b873ad45 79 /**
Davidroid 7:7a608b07fa9f 80 * @brief Handling the LED capabilities.
Davidroid 2:dbd596540d46 81 * @param None.
Davidroid 2:dbd596540d46 82 * @retval None.
Davidroid 1:1c01b873ad45 83 */
Davidroid 16:0d6f96345c56 84 void led_handler(void)
Davidroid 1:1c01b873ad45 85 {
Davidroid 3:ed347127fc38 86 static int tick = 0;
Davidroid 3:ed347127fc38 87
Davidroid 7:7a608b07fa9f 88 /* Handling the LED dimming when powered ON. */
Davidroid 14:c1a43abb901f 89 float pwm_dimming = 0.5f * sin(2 * M_PI * (tick++ * LOOP_PERIOD_us) / PWM_SIN_PERIOD_us) + 0.5f;
Davidroid 7:7a608b07fa9f 90 tick %= (int) (PWM_SIN_PERIOD_us / LOOP_PERIOD_us);
Davidroid 3:ed347127fc38 91
Davidroid 7:7a608b07fa9f 92 /* Printing to the console. */
Davidroid 7:7a608b07fa9f 93 printf("Sinusoidal PWM Dimming --> %0.2f\r", pwm_dimming);
Davidroid 2:dbd596540d46 94
Davidroid 7:7a608b07fa9f 95 /*
Davidroid 7:7a608b07fa9f 96 Writing PWM dimming values to the LED.
Davidroid 3:ed347127fc38 97
Davidroid 7:7a608b07fa9f 98 Notes:
Davidroid 16:0d6f96345c56 99 + Replace "set_pwm_dimming()" with "set_analog_dimming()" for an analog control.
Davidroid 7:7a608b07fa9f 100 */
Davidroid 16:0d6f96345c56 101 led->set_pwm_dimming(pwm_dimming);
Davidroid 2:dbd596540d46 102 }
Davidroid 2:dbd596540d46 103
Davidroid 2:dbd596540d46 104 /**
Davidroid 2:dbd596540d46 105 * @brief Interrupt Request for the main loop's ticker related interrupt.
Davidroid 2:dbd596540d46 106 * @param None.
Davidroid 2:dbd596540d46 107 * @retval None.
Davidroid 2:dbd596540d46 108 */
Davidroid 16:0d6f96345c56 109 void ticker_irq(void)
Davidroid 2:dbd596540d46 110 {
Davidroid 2:dbd596540d46 111 ticker_irq_triggered = true;
Davidroid 2:dbd596540d46 112 }
Davidroid 2:dbd596540d46 113
Davidroid 2:dbd596540d46 114 /**
Davidroid 2:dbd596540d46 115 * @brief Interrupt Request for the component's XFAULT interrupt.
Davidroid 2:dbd596540d46 116 * @param None.
Davidroid 2:dbd596540d46 117 * @retval None.
Davidroid 1:1c01b873ad45 118 */
Davidroid 16:0d6f96345c56 119 void xfault_irq(void)
Davidroid 1:1c01b873ad45 120 {
Davidroid 1:1c01b873ad45 121 xfault_irq_triggered = true;
Davidroid 16:0d6f96345c56 122 led->disable_xfault_irq();
Davidroid 1:1c01b873ad45 123 }
Davidroid 1:1c01b873ad45 124
Davidroid 1:1c01b873ad45 125 /**
Davidroid 2:dbd596540d46 126 * @brief Interrupt Handler for the component's XFAULT interrupt.
Davidroid 2:dbd596540d46 127 * @param None.
Davidroid 2:dbd596540d46 128 * @retval None.
Davidroid 2:dbd596540d46 129 */
Davidroid 16:0d6f96345c56 130 void xfault_handler(void)
Davidroid 2:dbd596540d46 131 {
Davidroid 2:dbd596540d46 132 /* Printing to the console. */
Davidroid 14:c1a43abb901f 133 printf("XFAULT Interrupt detected! Re-initializing LED driver...");
Davidroid 2:dbd596540d46 134
Davidroid 14:c1a43abb901f 135 /* Re-starting-up LED Control Component. */
Davidroid 16:0d6f96345c56 136 led->start_up();
Davidroid 14:c1a43abb901f 137
Davidroid 14:c1a43abb901f 138 /* Printing to the console. */
Davidroid 14:c1a43abb901f 139 printf("Done.\r\n\n");
Davidroid 2:dbd596540d46 140
Davidroid 16:0d6f96345c56 141 led->enable_xfault_irq();
Davidroid 2:dbd596540d46 142 }
Davidroid 2:dbd596540d46 143
Davidroid 0:f5a41692e1fb 144
Davidroid 0:f5a41692e1fb 145 /* Main ----------------------------------------------------------------------*/
Davidroid 0:f5a41692e1fb 146
Davidroid 0:f5a41692e1fb 147 int main()
Davidroid 0:f5a41692e1fb 148 {
Davidroid 0:f5a41692e1fb 149 /*----- Initialization. -----*/
Davidroid 0:f5a41692e1fb 150
Davidroid 2:dbd596540d46 151 /* Printing to the console. */
Davidroid 7:7a608b07fa9f 152 printf("LED Control Application Example\r\n\n");
Davidroid 2:dbd596540d46 153
Davidroid 1:1c01b873ad45 154 /* Initializing LED Control Component. */
Davidroid 16:0d6f96345c56 155 led = new Led6001(D4, A3, D6, D5);
Davidroid 16:0d6f96345c56 156 if (led->init() != COMPONENT_OK)
Davidroid 1:1c01b873ad45 157 exit(EXIT_FAILURE);
Davidroid 1:1c01b873ad45 158
Davidroid 1:1c01b873ad45 159 /* Attaching interrupt request functions. */
Davidroid 16:0d6f96345c56 160 led->attach_xfault_irq(&xfault_irq);
Davidroid 16:0d6f96345c56 161 led->enable_xfault_irq();
Davidroid 16:0d6f96345c56 162 ticker.attach_us(ticker_irq, LOOP_PERIOD_us);
Davidroid 1:1c01b873ad45 163
Davidroid 14:c1a43abb901f 164 /* Starting-up LED Control Component. */
Davidroid 16:0d6f96345c56 165 led->start_up();
Davidroid 0:f5a41692e1fb 166
Davidroid 0:f5a41692e1fb 167
Davidroid 0:f5a41692e1fb 168 /*----- LED Control. -----*/
Davidroid 1:1c01b873ad45 169
Davidroid 2:dbd596540d46 170 /* Either performing the component handler, interrupt handlers, or waiting for events. */
Davidroid 1:1c01b873ad45 171 while (true)
Davidroid 1:1c01b873ad45 172 {
Davidroid 2:dbd596540d46 173 if (ticker_irq_triggered)
Davidroid 1:1c01b873ad45 174 {
Davidroid 2:dbd596540d46 175 ticker_irq_triggered = false;
Davidroid 16:0d6f96345c56 176 led_handler();
Davidroid 5:b00bbf1edfa9 177 } else if (xfault_irq_triggered)
Davidroid 1:1c01b873ad45 178 {
Davidroid 1:1c01b873ad45 179 xfault_irq_triggered = false;
Davidroid 16:0d6f96345c56 180 xfault_handler();
Davidroid 5:b00bbf1edfa9 181 } else {
Davidroid 1:1c01b873ad45 182 /* It is recommended that SEVONPEND in the System Control Register is NOT set. */
Davidroid 1:1c01b873ad45 183 __WFE();
Davidroid 1:1c01b873ad45 184 }
Davidroid 1:1c01b873ad45 185 }
Davidroid 1:1c01b873ad45 186 }