303 lines
10 KiB
C
303 lines
10 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "./dogm128.h"
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u8 dogm128_ram[1024];
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u8 dogm128_cursor_x;
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u8 dogm128_cursor_y;
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void dogm128_send_command(u8 command)
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{
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u32 i;
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gpio_clear(DOGM128_A0_PORT, DOGM128_A0_PIN); /* A0 low for commands */
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spi_send(DOGM128_SPI, command);
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for (i = 0; i <= 500; i++) /* Wait a bit. */
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;
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}
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void dogm128_send_data(u8 data)
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{
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u32 i;
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gpio_set(DOGM128_A0_PORT, DOGM128_A0_PIN); /* A0 high for data */
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spi_send(DOGM128_SPI, data);
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for (i = 0; i <= 500; i++) /* Wait a bit. */
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;
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}
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void dogm128_init(void)
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{
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u32 i;
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/* Reset the display (reset low for dogm128). */
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gpio_clear(DOGM128_RESET_PORT, DOGM128_RESET_PIN);
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for (i = 0; i <= 60000; i++) /* Wait a bit. */
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;
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/* Get the display out of reset (reset high for dogm128). */
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gpio_set(DOGM128_RESET_PORT, DOGM128_RESET_PIN);
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for (i = 0; i <= 60000; i++) /* Wait a bit. */
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;
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gpio_clear(DOGM128_A0_PORT, DOGM128_A0_PIN); /* A0 low for init */
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/* Tell the display that we want to start. */
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spi_set_nss_low(DOGM128_SPI);
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/* Init sequence. */
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dogm128_send_command(DOGM128_DISPLAY_START_ADDRESS_BASE + 0);
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dogm128_send_command(DOGM128_ADC_REVERSE);
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dogm128_send_command(DOGM128_COM_OUTPUT_SCAN_NORMAL);
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dogm128_send_command(DOGM128_DISPLAY_NORMAL);
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dogm128_send_command(DOGM128_BIAS_19);
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dogm128_send_command(DOGM128_POWER_CONTROL_BASE + 0x07);
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dogm128_send_command(DOGM128_BOOSTER_RATIO_SET);
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dogm128_send_command(0x00); /* Booster x4 */
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dogm128_send_command(DOGM128_V0_OUTPUT_RESISTOR_BASE + 0x07);
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dogm128_send_command(DOGM128_ELECTRONIC_VOLUME_MODE_SET);
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dogm128_send_command(0x16); /* Contrast */
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dogm128_send_command(DOGM128_STATIC_INDICATOR_OFF);
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dogm128_send_command(0x00); /* Flashing OFF */
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dogm128_send_command(DOGM128_DISPLAY_ON);
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/* End transfer. */
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spi_set_nss_high(DOGM128_SPI);
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}
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void dogm128_print_char(u8 data)
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{
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u8 i, page, shift, xcoord, ycoord;
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xcoord = dogm128_cursor_x;
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ycoord = dogm128_cursor_y;
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/* The display consists of 8 lines a 8 dots each. */
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page = (63 - ycoord) / 8;
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shift = (7 -((63 - ycoord) % 8)); /* vertical shift */
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/* Font is 8x5 so iterate each column of the character. */
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for (i = 0; i <= 5; i++) {
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/* Right border reached? */
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if ((xcoord + i) > 127)
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return;
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dogm128_cursor_x++;
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/* 0xAA = end of character - no dots in this line. */
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if (dogm128_font[data - 0x20][i] == 0xAA) {
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dogm128_ram[(page * 128) + xcoord + i] &=
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~(0xFF >> shift); /* Clear area. */
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if ((shift > 0) && (page > 0))
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dogm128_ram[((page - 1) * 128) + xcoord + i]
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&= ~(0xFF << (8 - shift)); /* Clear area. */
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return;
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}
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/* Lower part. */
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dogm128_ram[(page * 128) + xcoord + i] &=
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~(0xFF >> shift); /* Clear area. */
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dogm128_ram[(page * 128) + xcoord + i] =
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(dogm128_font[data - 0x20][i] >> shift);
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/* Higher part if needed. */
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if ((shift > 0) && (page > 0)) {
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dogm128_ram[((page - 1) * 128) + xcoord + i] &=
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~(0xFF << (8 - shift)); /* Clear area. */
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dogm128_ram[((page - 1) * 128) + xcoord + i] =
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(dogm128_font[data - 0x20][i] << (8 - shift));
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}
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}
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}
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void dogm128_set_cursor(u8 xcoord, u8 ycoord)
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{
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dogm128_cursor_x = xcoord;
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dogm128_cursor_y = ycoord;
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}
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void dogm128_print_string(char *s)
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{
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while (*s != 0) {
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dogm128_print_char(*s);
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s++;
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}
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}
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void dogm128_set_dot(u8 xcoord, u8 ycoord)
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{
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dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] |=
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(1 << ((63 - ycoord) % 8));
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}
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void dogm128_clear_dot(u8 xcoord, u8 ycoord)
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{
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dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] &=
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~(1 << ((63 - ycoord) % 8));
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}
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void dogm128_update_display(void)
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{
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u8 page, column;
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/* Tell the display that we want to start. */
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spi_set_nss_low(DOGM128_SPI);
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for (page = 0; page <= 7; page++) {
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dogm128_send_command(0xB0 + page); /* Set page. */
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dogm128_send_command(0x10); /* Set column upper address to 0. */
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dogm128_send_command(0x00); /* Set column lower address to 0. */
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for (column = 0; column <= 127; column++)
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dogm128_send_data(dogm128_ram[(page * 128) + column]);
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}
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spi_set_nss_high(DOGM128_SPI);
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}
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void dogm128_clear(void)
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{
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int i;
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for (i = 0; i <= 1023; i++)
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dogm128_ram[i] = 0;
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dogm128_update_display();
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}
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/*
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* This is a non-monospace font definition (upside down for better handling).
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* 0xAA is the end of the character so it's not space efficient in your memory,
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* but on your display.
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*
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* We are starting with " " as the first printable character at 0x20, so we
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* have to substract 0x20 later.
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*
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* Its the only defined to 127/0x7F so if you have German umlauts or other
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* special characters from above you have to expand this definition a
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* little bit.
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*/
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const u8 dogm128_font[96][6] = {
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/* 20 SPACE */ {0x00, 0x00, 0x00, 0xAA, 0xAA, 0xAA},
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/* 21 ! */ {0x5E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 22 " */ {0x66, 0x00, 0x66, 0xAA, 0xAA, 0xAA},
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/* 23 # */ {0x28, 0x7C, 0x28, 0x7C, 0x28, 0xAA},
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/* 24 $ */ {0x24, 0x2A, 0x7F, 0x2A, 0x10, 0xAA},
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/* 25 % */ {0x62, 0x18, 0x46, 0xAA, 0xAA, 0xAA},
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/* 26 & */ {0x30, 0x4C, 0x5A, 0x24, 0x50, 0xAA},
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/* 27 ' */ {0x06, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 28 ( */ {0x3E, 0x41, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 29 ) */ {0x41, 0x3E, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 2A * */ {0x28, 0x10, 0x7C, 0x10, 0x28, 0xAA},
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/* 2B + */ {0x10, 0x38, 0x10, 0xAA, 0xAA, 0xAA},
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/* 2C , */ {0xC0, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 2D - */ {0x10, 0x10, 0x10, 0xAA, 0xAA, 0xAA},
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/* 2E . */ {0x40, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 2F / */ {0x60, 0x18, 0x06, 0xAA, 0xAA, 0xAA},
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/* 30 0 */ {0x3C, 0x42, 0x42, 0x3C, 0xAA, 0xAA},
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/* 31 1 */ {0x44, 0x7E, 0x40, 0xAA, 0xAA, 0xAA},
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/* 32 2 */ {0x44, 0x62, 0x52, 0x4C, 0xAA, 0xAA},
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/* 33 3 */ {0x4A, 0x4A, 0x34, 0xAA, 0xAA, 0xAA},
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/* 34 4 */ {0x1E, 0x10, 0x78, 0x10, 0xAA, 0xAA},
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/* 35 5 */ {0x4E, 0x4A, 0x32, 0xAA, 0xAA, 0xAA},
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/* 36 6 */ {0x3C, 0x4A, 0x4A, 0x30, 0xAA, 0xAA},
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/* 37 7 */ {0x62, 0x12, 0x0E, 0xAA, 0xAA, 0xAA},
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/* 38 8 */ {0x34, 0x4A, 0x4A, 0x34, 0xAA, 0xAA},
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/* 39 9 */ {0x0C, 0x52, 0x52, 0x3C, 0xAA, 0xAA},
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/* 3A : */ {0x28, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 3B ; */ {0xC8, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 3C < */ {0x10, 0x28, 0x44, 0xAA, 0xAA, 0xAA},
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/* 3D = */ {0x28, 0x28, 0x28, 0xAA, 0xAA, 0xAA},
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/* 3E > */ {0x44, 0x28, 0x10, 0xAA, 0xAA, 0xAA},
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/* 3F ? */ {0x02, 0x52, 0x0C, 0xAA, 0xAA, 0xAA},
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/* 40 @ */ {0x3C, 0x42, 0x12, 0x2A, 0x3C, 0xAA},
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/* 41 A */ {0x7C, 0x12, 0x12, 0x7C, 0xAA, 0xAA},
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/* 42 B */ {0x7E, 0x4A, 0x4A, 0x34, 0xAA, 0xAA},
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/* 43 C */ {0x3C, 0x42, 0x42, 0x24, 0xAA, 0xAA},
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/* 44 D */ {0x7E, 0x42, 0x42, 0x3C, 0xAA, 0xAA},
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/* 45 E */ {0x7E, 0x4A, 0x4A, 0xAA, 0xAA, 0xAA},
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/* 46 F */ {0x7E, 0x0A, 0x0A, 0xAA, 0xAA, 0xAA},
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/* 47 G */ {0x3C, 0x42, 0x52, 0x34, 0xAA, 0xAA},
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/* 48 H */ {0x7E, 0x08, 0x08, 0x7E, 0xAA, 0xAA},
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/* 49 I */ {0x42, 0x7E, 0x42, 0xAA, 0xAA, 0xAA},
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/* 4A J */ {0x42, 0x42, 0x3E, 0xAA, 0xAA, 0xAA},
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/* 4B K */ {0x7E, 0x08, 0x14, 0x62, 0xAA, 0xAA},
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/* 4C L */ {0x7E, 0x40, 0x40, 0xAA, 0xAA, 0xAA},
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/* 4D M */ {0x7E, 0x04, 0x08, 0x04, 0x7E, 0xAA},
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/* 4E N */ {0x7E, 0x04, 0x18, 0x20, 0x7E, 0xAA},
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/* 4F O */ {0x3C, 0x42, 0x42, 0x3C, 0xAA, 0xAA},
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/* 50 P */ {0x7E, 0x12, 0x12, 0x0C, 0xAA, 0xAA},
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/* 51 Q */ {0x3C, 0x42, 0x42, 0xBC, 0xAA, 0xAA},
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/* 52 R */ {0x7E, 0x12, 0x12, 0x6C, 0xAA, 0xAA},
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/* 53 S */ {0x44, 0x4A, 0x4A, 0x30, 0xAA, 0xAA},
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/* 54 T */ {0x02, 0x7E, 0x02, 0xAA, 0xAA, 0xAA},
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/* 55 U */ {0x3E, 0x40, 0x40, 0x3E, 0xAA, 0xAA},
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/* 56 V */ {0x06, 0x18, 0x60, 0x18, 0x06, 0xAA},
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/* 57 W */ {0x3E, 0x40, 0x3E, 0x40, 0x3E, 0xAA},
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/* 58 X */ {0x42, 0x24, 0x18, 0x24, 0x42, 0xAA},
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/* 59 Y */ {0x9E, 0xA0, 0xA0, 0x7E, 0xAA, 0xAA},
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/* 5A Z */ {0x62, 0x52, 0x4A, 0x46, 0xAA, 0xAA},
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/* 5B [ */ {0x7E, 0x42, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 5C \ */ {0x06, 0x18, 0x60, 0xAA, 0xAA, 0xAA},
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/* 5D ] */ {0x42, 0x7E, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 5E ^ */ {0x04, 0x02, 0x04, 0xAA, 0xAA, 0xAA},
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/* 5F _ */ {0x40, 0x40, 0x40, 0xAA, 0xAA, 0xAA},
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/* 60 ` */ {0x02, 0x04, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 61 a */ {0x20, 0x54, 0x54, 0x78, 0xAA, 0xAA},
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/* 62 b */ {0x7E, 0x44, 0x44, 0x38, 0xAA, 0xAA},
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/* 63 c */ {0x38, 0x44, 0x44, 0x28, 0xAA, 0xAA},
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/* 64 d */ {0x38, 0x44, 0x44, 0x7E, 0xAA, 0xAA},
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/* 65 e */ {0x38, 0x54, 0x54, 0x58, 0xAA, 0xAA},
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/* 66 f */ {0x7C, 0x0A, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 67 g */ {0x98, 0xA4, 0xA4, 0x7C, 0xAA, 0xAA},
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/* 68 h */ {0x7E, 0x04, 0x04, 0x78, 0xAA, 0xAA},
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/* 69 i */ {0x7A, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 6A j */ {0x40, 0x3A, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 6B k */ {0x7E, 0x10, 0x28, 0x44, 0xAA, 0xAA},
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/* 6C l */ {0x7E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 6D m */ {0x7C, 0x04, 0x78, 0x04, 0x78, 0xAA},
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/* 6E n */ {0x7C, 0x04, 0x04, 0x78, 0xAA, 0xAA},
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/* 6F o */ {0x38, 0x44, 0x44, 0x38, 0xAA, 0xAA},
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/* 70 p */ {0xFC, 0x24, 0x24, 0x18, 0xAA, 0xAA},
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/* 71 q */ {0x18, 0x24, 0x24, 0xFC, 0xAA, 0xAA},
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/* 72 r */ {0x78, 0x04, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 73 s */ {0x48, 0x54, 0x54, 0x20, 0xAA, 0xAA},
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/* 74 t */ {0x04, 0x3E, 0x44, 0xAA, 0xAA, 0xAA},
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/* 75 u */ {0x3C, 0x40, 0x40, 0x3C, 0xAA, 0xAA},
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/* 76 v */ {0x0C, 0x30, 0x40, 0x30, 0x0C, 0xAA},
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/* 77 w */ {0x3C, 0x40, 0x3C, 0x40, 0x3C, 0xAA},
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/* 78 x */ {0x44, 0x28, 0x10, 0x28, 0x44, 0xAA},
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/* 79 y */ {0x1C, 0xA0, 0xA0, 0x7C, 0xAA, 0xAA},
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/* 7A z */ {0x64, 0x54, 0x4C, 0xAA, 0xAA, 0xAA},
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/* 7B { */ {0x08, 0x36, 0x41, 0xAA, 0xAA, 0xAA},
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/* 7C | */ {0x7E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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/* 7D } */ {0x41, 0x36, 0x08, 0xAA, 0xAA, 0xAA},
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/* 7E ~ */ {0x20, 0x10, 0x20, 0x10, 0xAA, 0xAA},
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/* 7F DEL */ {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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};
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