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145 lines
4.0 KiB
145 lines
4.0 KiB
/*
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MIT License
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Copyright (c) 2018, Alexey Dynda
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "vga_monitor.h"
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#include "vga_commands.h"
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#include "lcd_common.h"
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#include "intf/ssd1306_interface.h"
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#include "ssd1306_hal/io.h"
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static uint8_t s_column = 0;
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static uint8_t s_page = 0;
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extern uint16_t ssd1306_color;
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static void vga_set_block1(lcduint_t x, lcduint_t y, lcduint_t w)
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{
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uint8_t rx = w ? (x + w - 1) : (ssd1306_lcd.width - 1);
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s_column = x;
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s_page = y;
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ssd1306_intf.start();
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ssd1306_intf.send(0x00);
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ssd1306_intf.send(VGA_SET_BLOCK);
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ssd1306_intf.send(s_column);
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ssd1306_intf.send(rx);
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ssd1306_intf.send(s_page * 8);
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ssd1306_intf.stop();
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ssd1306_intf.start();
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ssd1306_intf.send(0x40);
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}
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static void vga_next_page1(void)
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{
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ssd1306_intf.stop();
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vga_set_block1(s_column,s_page+1,0);
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}
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static void vga_set_block2(lcduint_t x, lcduint_t y, lcduint_t w)
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{
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uint8_t rx = w ? (x + w - 1) : (ssd1306_lcd.width - 1);
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ssd1306_intf.start();
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ssd1306_intf.send(0x00);
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ssd1306_intf.send(VGA_SET_BLOCK); // set block
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ssd1306_intf.send(x);
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ssd1306_intf.send(rx);
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ssd1306_intf.send(y);
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ssd1306_intf.stop();
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ssd1306_intf.start();
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ssd1306_intf.send(0x40);
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}
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static void vga_next_page2(void)
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{
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}
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static void vga_send_pixels(uint8_t data)
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{
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for (uint8_t i=8; i>0; i--)
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{
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if ( data & 0x01 )
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{
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ssd1306_intf.send( (uint8_t)ssd1306_color );
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}
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else
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{
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ssd1306_intf.send( 0B00000000 );
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}
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data >>= 1;
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}
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}
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static void vga_send_pixels_buffer(const uint8_t *buffer, uint16_t len)
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{
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while(len--)
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{
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vga_send_pixels(*buffer);
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buffer++;
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}
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}
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static void vga_set_mode(lcd_mode_t mode)
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{
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if (mode == LCD_MODE_NORMAL)
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{
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ssd1306_lcd.set_block = vga_set_block2;
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ssd1306_lcd.next_page = vga_next_page2;
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}
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else if (mode == LCD_MODE_SSD1306_COMPAT)
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{
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ssd1306_lcd.set_block = vga_set_block1;
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ssd1306_lcd.next_page = vga_next_page1;
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}
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ssd1306_intf.start();
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ssd1306_intf.send( 0x00 );
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ssd1306_intf.send( VGA_SET_MODE );
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ssd1306_intf.send( (uint8_t)mode );
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ssd1306_intf.stop();
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// empty for a while
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}
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void vga_96x40_8colors_init(void)
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{
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ssd1306_lcd.type = LCD_TYPE_SSD1331;
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ssd1306_lcd.width = 96;
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ssd1306_lcd.height = 40;
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ssd1306_lcd.set_block = vga_set_block1;
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ssd1306_lcd.next_page = vga_next_page1;
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ssd1306_lcd.send_pixels1 = vga_send_pixels;
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ssd1306_lcd.send_pixels_buffer1 = vga_send_pixels_buffer;
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ssd1306_lcd.send_pixels8 = ssd1306_intf.send;
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ssd1306_lcd.set_mode = vga_set_mode;
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}
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void vga_128x64_mono_init(void)
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{
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ssd1306_lcd.type = LCD_TYPE_SSD1306;
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ssd1306_lcd.width = 128;
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ssd1306_lcd.height = 64;
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ssd1306_lcd.set_block = vga_set_block2;
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ssd1306_lcd.next_page = vga_next_page2;
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ssd1306_lcd.send_pixels1 = ssd1306_intf.send;
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ssd1306_lcd.send_pixels_buffer1 = ssd1306_intf.send_buffer;
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ssd1306_lcd.set_mode = vga_set_mode;
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}
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