main.c
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/*
* Copyright (C) 2015 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Test application for the PCD8544 display driver
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#ifndef TEST_PCD8544_SPI
#error "TEST_PCD8544_SPI not defined"
#endif
#ifndef TEST_PCD8544_CS
#error "TEST_PCD8544_CS not defined"
#endif
#ifndef TEST_PCD8544_RESET
#error "TEST_PCD8544_RESET not defined"
#endif
#ifndef TEST_PCD8544_MODE
#error "TEST_PCD8544_MODE not defined"
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "shell.h"
#include "pcd8544.h"
static pcd8544_t dev;
static int _contrast(int argc, char **argv)
{
uint8_t val;
if (argc < 2) {
printf("usage: %s VAL [0-127]\n", argv[0]);
return 1;
}
val = (uint8_t)atoi(argv[1]);
pcd8544_set_contrast(&dev, val);
return 0;
}
static int _temp(int argc, char **argv)
{
uint8_t val;
if (argc < 2) {
printf("usage: %s VAL [0-3]\n", argv[0]);
return 1;
}
val = (uint8_t)atoi(argv[1]);
pcd8544_set_tempcoef(&dev, val);
return 0;
}
static int _bias(int argc, char **argv)
{
uint8_t val;
if (argc < 2) {
printf("usage: %s VAL [0-7]\n", argv[0]);
return 1;
}
val = (uint8_t)atoi(argv[1]);
pcd8544_set_bias(&dev, val);
return 0;
}
static int _on(int argc, char **argv)
{
(void)argc;
(void)argv;
pcd8544_poweron(&dev);
return 0;
}
static int _off(int argc, char **argv)
{
(void)argc;
(void)argv;
pcd8544_poweroff(&dev);
return 0;
}
static int _clear(int argc, char **argv)
{
(void)argc;
(void)argv;
pcd8544_clear(&dev);
return 0;
}
static int _invert(int argc, char **argv)
{
(void)argc;
(void)argv;
pcd8544_invert(&dev);
return 0;
}
static int _riot(int argc, char **argv) {
(void)argc;
(void)argv;
pcd8544_riot(&dev);
return 0;
}
static int _write(int argc, char **argv)
{
uint8_t x, y;
if (argc < 4) {
printf("usage: %s X Y STRING\n", argv[0]);
return -1;
}
x = (uint8_t)atoi(argv[1]);
y = (uint8_t)atoi(argv[2]);
pcd8544_write_s(&dev, x, y, argv[3]);
return 0;
}
static const shell_command_t shell_commands[] = {
{ "contrast", "set contrast", _contrast },
{ "temp", "set temperature coefficient", _temp },
{ "bias", "set BIAS value", _bias },
{ "on", "turn display on", _on },
{ "off", "turn display off", _off },
{ "clear", "clear memory", _clear },
{ "invert", "invert display", _invert },
{ "riot", "display RIOT logo", _riot },
{ "write", "write string to display", _write},
{ NULL, NULL, NULL }
};
int main(void)
{
puts("PCD8544 LCD display test application\n");
printf("Initializing PCD8544 LCD at SPI_%i... ", TEST_PCD8544_SPI);
if (pcd8544_init(&dev, TEST_PCD8544_SPI, TEST_PCD8544_CS,
TEST_PCD8544_RESET, TEST_PCD8544_MODE) != 0) {
puts("Failed to initialize PCD8544 display");
return 1;
}
/* run shell */
puts("All OK, running shell now");
char line_buf[SHELL_DEFAULT_BUFSIZE];
shell_run(shell_commands, line_buf, SHELL_DEFAULT_BUFSIZE);
return 0;
}