ST / Mbed 2 deprecated HelloWorld_LED61A1

Simple test application for the STMicroelectronics X-NUCLEO-LED61A1 LED Control Expansion Board.

Dependencies:   X_NUCLEO_LED61A1 mbed

Fork of HelloWorld_LED61A1 by ST Expansion SW Team

LED Control with the X-NUCLEO-LED61A1 Expansion Board

This application provides a simple example of usage of the X-NUCLEO-LED61A1 LED Control Expansion Board.
It shows how to control a LED stripe load connected to the board by means of a sinusoidal wave form injected into the PWM dimming control pin.

main.cpp@19:4b259f97c1e3, 2017-10-17 (annotated)

Committer:
Davidroid
Date:
Tue Oct 17 13:03:29 2017 +0000
Revision:
19:4b259f97c1e3
Parent:
18:bef2ec6d10ab 
Updating mbed library. Minor changes.

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 0:f5a41692e1fb 44
Davidroid 1:1c01b873ad45 45 /* Component specific header files. */
Davidroid 16:0d6f96345c56 46 #include "Led6001.h"
Davidroid 1:1c01b873ad45 47
Davidroid 1:1c01b873ad45 48
Davidroid 1:1c01b873ad45 49 /* Definitions ---------------------------------------------------------------*/
Davidroid 1:1c01b873ad45 50
Davidroid 3:ed347127fc38 51 /* PI. */
Davidroid 3:ed347127fc38 52 #ifndef M_PI
Davidroid 14:c1a43abb901f 53 #define M_PI (3.14159265358979323846f)
Davidroid 3:ed347127fc38 54 #endif
Davidroid 3:ed347127fc38 55
Davidroid 2:dbd596540d46 56 /* Loop period in micro-seconds. */
Davidroid 14:c1a43abb901f 57 #define LOOP_PERIOD_us (5E5) /* 0.5 seconds. */
Davidroid 3:ed347127fc38 58
Davidroid 3:ed347127fc38 59 /* Sin period in micro-seconds. */
Davidroid 19:4b259f97c1e3 60 #define LED_SIN_PERIOD_us (1E7) /* 10 seconds. */
Davidroid 1:1c01b873ad45 61
Davidroid 1:1c01b873ad45 62
Davidroid 1:1c01b873ad45 63 /* Variables -----------------------------------------------------------------*/
Davidroid 1:1c01b873ad45 64
Davidroid 2:dbd596540d46 65 /* Main loop's ticker. */
Davidroid 2:dbd596540d46 66 static Ticker ticker;
Davidroid 1:1c01b873ad45 67
Davidroid 2:dbd596540d46 68 /* LED Control Component. */
Davidroid 16:0d6f96345c56 69 Led6001 *led;
Davidroid 2:dbd596540d46 70
Davidroid 2:dbd596540d46 71 /* Interrupt flags. */
Davidroid 14:c1a43abb901f 72 static volatile bool ticker_irq_triggered = false;
Davidroid 14:c1a43abb901f 73 static volatile bool xfault_irq_triggered = false;
Davidroid 1:1c01b873ad45 74
Davidroid 1:1c01b873ad45 75
Davidroid 1:1c01b873ad45 76 /* Functions -----------------------------------------------------------------*/
Davidroid 1:1c01b873ad45 77
Davidroid 1:1c01b873ad45 78 /**
Davidroid 7:7a608b07fa9f 79 * @brief Handling the LED capabilities.
Davidroid 2:dbd596540d46 80 * @param None.
Davidroid 2:dbd596540d46 81 * @retval None.
Davidroid 1:1c01b873ad45 82 */
Davidroid 16:0d6f96345c56 83 void led_handler(void)
Davidroid 1:1c01b873ad45 84 {
Davidroid 3:ed347127fc38 85 static int tick = 0;
Davidroid 3:ed347127fc38 86
Davidroid 7:7a608b07fa9f 87 /* Handling the LED dimming when powered ON. */
Davidroid 19:4b259f97c1e3 88 float dimming = 0.5f * sin(2 * M_PI * (tick++ * LOOP_PERIOD_us) / LED_SIN_PERIOD_us) + 0.5f;
Davidroid 19:4b259f97c1e3 89 tick %= (int) (LED_SIN_PERIOD_us / LOOP_PERIOD_us);
Davidroid 3:ed347127fc38 90
Davidroid 7:7a608b07fa9f 91 /* Printing to the console. */
Davidroid 19:4b259f97c1e3 92 printf("Sinusoidal PWM Dimming --> %0.2f\r", dimming);
Davidroid 2:dbd596540d46 93
Davidroid 7:7a608b07fa9f 94 /*
Davidroid 7:7a608b07fa9f 95 Writing PWM dimming values to the LED.
Davidroid 3:ed347127fc38 96
Davidroid 7:7a608b07fa9f 97 Notes:
Davidroid 19:4b259f97c1e3 98 + Use "set_pwm_dimming()" for a PWM control, or "set_analog_dimming()"
Davidroid 19:4b259f97c1e3 99 for an analog control.
Davidroid 7:7a608b07fa9f 100 */
Davidroid 19:4b259f97c1e3 101 led->set_analog_dimming(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 18:bef2ec6d10ab 156 if (led->init() != COMPONENT_OK) {
Davidroid 1:1c01b873ad45 157 exit(EXIT_FAILURE);
Davidroid 18:bef2ec6d10ab 158 }
Davidroid 1:1c01b873ad45 159
Davidroid 1:1c01b873ad45 160 /* Attaching interrupt request functions. */
Davidroid 16:0d6f96345c56 161 led->attach_xfault_irq(&xfault_irq);
Davidroid 16:0d6f96345c56 162 led->enable_xfault_irq();
Davidroid 16:0d6f96345c56 163 ticker.attach_us(ticker_irq, LOOP_PERIOD_us);
Davidroid 1:1c01b873ad45 164
Davidroid 14:c1a43abb901f 165 /* Starting-up LED Control Component. */
Davidroid 16:0d6f96345c56 166 led->start_up();
Davidroid 0:f5a41692e1fb 167
Davidroid 0:f5a41692e1fb 168
Davidroid 0:f5a41692e1fb 169 /*----- LED Control. -----*/
Davidroid 1:1c01b873ad45 170
Davidroid 2:dbd596540d46 171 /* Either performing the component handler, interrupt handlers, or waiting for events. */
Davidroid 18:bef2ec6d10ab 172 while (true) {
Davidroid 18:bef2ec6d10ab 173 if (ticker_irq_triggered) {
Davidroid 2:dbd596540d46 174 ticker_irq_triggered = false;
Davidroid 16:0d6f96345c56 175 led_handler();
Davidroid 18:bef2ec6d10ab 176 } else if (xfault_irq_triggered) {
Davidroid 1:1c01b873ad45 177 xfault_irq_triggered = false;
Davidroid 16:0d6f96345c56 178 xfault_handler();
Davidroid 5:b00bbf1edfa9 179 } else {
Davidroid 1:1c01b873ad45 180 /* It is recommended that SEVONPEND in the System Control Register is NOT set. */
Davidroid 1:1c01b873ad45 181 __WFE();
Davidroid 1:1c01b873ad45 182 }
Davidroid 1:1c01b873ad45 183 }
Davidroid 1:1c01b873ad45 184 }