nes-proj/examples/platform-specific/zoul/test-lcd.c

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/*
* Copyright (c) 2015, Zolertia <http://www.zolertia.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \addtogroup zoul-examples
* @{
*
* \defgroup zoul-rgb-lcd-test Test the LCD with RGB backlight
*
* Demonstrates the use of the LCD with on-board RGB backlight
* @{
*
* \file
* A quick program for testing the Grove's LCD with RGB backlight
* \author
* Antonio Lignan <alinan@zolertia.com>
*/
/*---------------------------------------------------------------------------*/
#include <stdio.h>
#include "contiki.h"
#include "dev/rgb-bl-lcd.h"
#include "dev/button-sensor.h"
/*---------------------------------------------------------------------------*/
#define SCROLL_PERIOD (CLOCK_SECOND / 6)
/*---------------------------------------------------------------------------*/
PROCESS(remote_lcd_process, "Grove LCD backlight test");
AUTOSTART_PROCESSES(&remote_lcd_process);
/*---------------------------------------------------------------------------*/
static struct etimer et;
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(remote_lcd_process, ev, data)
{
PROCESS_BEGIN();
static uint8_t i = 0;
static char buf[16];
static uint16_t counter;
/* Enable the LCD, default configuration is 2 rows and 16 columns, RGB
* backlight on with red color, no cursor/blink */
SENSORS_ACTIVATE(rgb_bl_lcd);
/* Set the cursor to column 17 and row 0 to not make it visible yet */
lcd_set_cursor(17, LCD_RGB_1ST_ROW);
lcd_write("Hello Contiki!");
/* Now make the text appear from right to left and stay aligned left */
while(i < 16) {
etimer_set(&et, SCROLL_PERIOD);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
lcd_scroll_display(LCD_RGB_CURSOR_MOVE_LEFT, 1);
i++;
etimer_restart(&et);
}
/* wait 2 seconds */
etimer_set(&et, (CLOCK_SECOND * 2));
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
/* Clear the welcome message */
lcd_clear_display();
/* Spin the timer and print the counter value on the LCD */
etimer_set(&et, CLOCK_SECOND);
lcd_set_cursor(0, LCD_RGB_1ST_ROW);
lcd_write("Press the button!");
while(1) {
PROCESS_YIELD();
if(ev == PROCESS_EVENT_TIMER) {
snprintf(buf, 15, "Counter: %05u", counter);
lcd_set_cursor(0, LCD_RGB_2ND_ROW);
lcd_write(buf);
printf("Counter: %05u\n", counter);
counter++;
etimer_restart(&et);
} else if(ev == sensors_event) {
if(data == &button_sensor) {
if(button_sensor.value(BUTTON_SENSOR_VALUE_TYPE_LEVEL) ==
BUTTON_SENSOR_PRESSED_LEVEL) {
printf("Button pressed!!\n");
lcd_set_cursor(0, LCD_RGB_1ST_ROW);
lcd_write("Button pressed!!");
} else {
lcd_set_cursor(0, LCD_RGB_1ST_ROW);
lcd_write("Press the button!");
}
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/