upm/examples/c/jhd1313m1.c
Noel Eck f623414c04 jhd1313m1: Added while loop to LCD example c/cxx
Make these just a bit more interesting - continuously change color
and keep updating the lcd.  Also, echo the write via printf.

Signed-off-by: Noel Eck <noel.eck@intel.com>
2016-10-28 10:37:25 -07:00

85 lines
2.5 KiB
C

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2016 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "jhd1313m1.h"
#include "upm_utilities.h"
#include "signal.h"
#include "string.h"
bool shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main(int argc, char **argv)
{
signal(SIGINT, sig_handler);
//! [Interesting]
// initialize a JHD1313m1 on I2C bus 0, LCD address 0x3e, RGB
// address 0x62
jhd1313m1_context lcd = jhd1313m1_init(0, 0x3e, 0x62);
if (!lcd)
{
printf("jhd1313m1_i2c_init() failed\n");
return 1;
}
int ndx = 0;
char str[20];
uint8_t rgb[7][3] = {
{0xd1, 0x00, 0x00},
{0xff, 0x66, 0x22},
{0xff, 0xda, 0x21},
{0x33, 0xdd, 0x00},
{0x11, 0x33, 0xcc},
{0x22, 0x00, 0x66},
{0x33, 0x00, 0x44}};
while (shouldRun)
{
snprintf(str, sizeof(str), "Hello World %d", ndx);
// Alternate rows on the LCD
jhd1313m1_set_cursor(lcd, ndx%2, 0);
jhd1313m1_write(lcd, str, strlen(str));
// Change the color
uint8_t r = rgb[ndx%7][0];
uint8_t g = rgb[ndx%7][1];
uint8_t b = rgb[ndx%7][2];
jhd1313m1_set_color(lcd, r, g, b);
// Echo via printf
printf("Hello World %d rgb: 0x%02x%02x%02x\n", ndx++, r, g, b);
upm_delay(1);
}
jhd1313m1_close(lcd);
//! [Interesting]
return 0;
}