You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
166 lines
3.6 KiB
C
166 lines
3.6 KiB
C
/**
|
|
* dogs.c - Interface for drawing to the EADOGS102N-6 display.
|
|
* Copyright (C) 2020 Clyne Sullivan
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
* See the GNU General Public License for more details.
|
|
*/
|
|
|
|
#include "ch.h"
|
|
#include "dogs.h"
|
|
#include "hal.h"
|
|
|
|
#define SET_DATA palSetPad(GPIOC, 15)
|
|
#define SET_CMD palClearPad(GPIOC, 15)
|
|
#define CS_HIGH palSetPad(GPIOA, 4)
|
|
#define CS_LOW palClearPad(GPIOA, 4)
|
|
|
|
unsigned char dogs_buffer[DISP_WIDTH * DISP_HEIGHT / 8];
|
|
|
|
static void dogs_init_display();
|
|
|
|
void dogs_init()
|
|
{
|
|
// SPI
|
|
palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATE(1)); // MOSI
|
|
palSetPadMode(GPIOA, 5, PAL_MODE_ALTERNATE(0)); // CLK
|
|
palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL); // nCS
|
|
palSetPadMode(GPIOC, 14, PAL_MODE_OUTPUT_PUSHPULL); // nRST
|
|
palSetPadMode(GPIOC, 15, PAL_MODE_OUTPUT_PUSHPULL); // CD
|
|
|
|
palSetPad(GPIOA, 4);
|
|
palSetPad(GPIOC, 14);
|
|
palClearPad(GPIOC, 15);
|
|
|
|
static const SPIConfig ls_spicfg = {
|
|
false,
|
|
NULL,
|
|
SPI_CR1_BR_2 | SPI_CR1_BR_1,
|
|
0
|
|
};
|
|
spiStart(&SPID1, &ls_spicfg);
|
|
|
|
dogs_init_display();
|
|
dogs_clear();
|
|
}
|
|
|
|
void dogs_write_data(unsigned char byte)
|
|
{
|
|
SET_DATA;
|
|
spiSend(&SPID1, 1, &byte);
|
|
}
|
|
void dogs_write_cmd(unsigned char byte)
|
|
{
|
|
SET_CMD;
|
|
spiSend(&SPID1, 1, &byte);
|
|
}
|
|
|
|
void dogs_set_column(unsigned int col)
|
|
{
|
|
//if (col < DISP_WIDTH) {
|
|
dogs_write_cmd(0x10 | ((col >> 4) & 0xF));
|
|
dogs_write_cmd(0x00 | (col & 0xF));
|
|
//}
|
|
}
|
|
void dogs_set_power(unsigned int bits)
|
|
{
|
|
dogs_write_cmd(0x28 | (bits & 0x7));
|
|
}
|
|
void dogs_set_scroll_line(unsigned int startline)
|
|
{
|
|
dogs_write_cmd(0x40 | (startline & 0x3F));
|
|
}
|
|
void dogs_set_page(unsigned int page)
|
|
{
|
|
dogs_write_cmd(0xB0 | (page & 0xF));
|
|
}
|
|
void dogs_set_vlcd_ratio(unsigned int ratio)
|
|
{
|
|
dogs_write_cmd(0x20 | (ratio & 0x7));
|
|
}
|
|
void dogs_set_contrast(unsigned int value)
|
|
{
|
|
dogs_write_cmd(0x81);
|
|
dogs_write_cmd(0x00 | (value & 0x3F));
|
|
}
|
|
void dogs_set_pixelson(bool on)
|
|
{
|
|
dogs_write_cmd(on ? 0xA5 : 0xA4);
|
|
}
|
|
void dogs_set_invert(bool invert)
|
|
{
|
|
dogs_write_cmd(invert ? 0xA7 : 0xA6);
|
|
}
|
|
void dogs_set_sleep(bool sleep)
|
|
{
|
|
dogs_write_cmd(sleep ? 0xAE : 0xAF);
|
|
}
|
|
void dogs_set_segdir(bool normal)
|
|
{
|
|
dogs_write_cmd(normal ? 0xA0 : 0xA1);
|
|
}
|
|
void dogs_set_comdir(bool normal)
|
|
{
|
|
dogs_write_cmd(normal ? 0xC0 : 0xC8);
|
|
}
|
|
void dogs_reset()
|
|
{
|
|
dogs_write_cmd(0xE2);
|
|
}
|
|
void dogs_set_bias(bool higher)
|
|
{
|
|
dogs_write_cmd(higher ? 0xA2 : 0xA3);
|
|
}
|
|
void dogs_set_advanced(unsigned int bits)
|
|
{
|
|
dogs_write_cmd(0xFA);
|
|
dogs_write_cmd(0x10 | bits);
|
|
}
|
|
|
|
void dogs_init_display()
|
|
{
|
|
CS_LOW;
|
|
dogs_reset();
|
|
CS_HIGH;
|
|
chThdSleepMilliseconds(100);
|
|
CS_LOW;
|
|
dogs_set_scroll_line(0);
|
|
dogs_set_segdir(true);
|
|
dogs_set_comdir(false);
|
|
dogs_set_pixelson(false);
|
|
dogs_set_invert(false);
|
|
dogs_set_bias(true);
|
|
dogs_set_power(0x07);
|
|
dogs_set_vlcd_ratio(7);
|
|
dogs_set_contrast(0x10);
|
|
dogs_set_advanced(0x83);
|
|
dogs_set_sleep(false);
|
|
CS_HIGH;
|
|
}
|
|
|
|
void dogs_clear()
|
|
{
|
|
unsigned char *ptr = dogs_buffer;
|
|
for (unsigned int i = 0; i < sizeof(dogs_buffer); i++) {
|
|
*ptr++ = 0;
|
|
}
|
|
dogs_flush();
|
|
}
|
|
|
|
void dogs_flush()
|
|
{
|
|
unsigned char *ptr = dogs_buffer;
|
|
CS_LOW;
|
|
for (int page = 0; page < 8; page++) {
|
|
dogs_set_page(page);
|
|
dogs_set_column(30);
|
|
for (int i = 0; i < 102; i++)
|
|
dogs_write_data(*ptr++);
|
|
}
|
|
CS_HIGH;
|
|
}
|
|
|