oled_ssd1327.c

/*
    MIT License

    Copyright (c) 2019, Alexey Dynda

    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 "oled_ssd1327.h"
#include "lcd_common.h"
#include "intf/ssd1306_interface.h"
#include "intf/spi/ssd1306_spi.h"
#include "ssd1306_hal/io.h"
#ifdef SDL_EMULATION
#include "sdl_core.h"
#endif

extern uint16_t ssd1306_color;

static const PROGMEM uint8_t s_oled_128x128_initData[] =
{
#ifdef SDL_EMULATION
    SDL_LCD_SSD1327,
    SDL_LCD_SSD1327_GENERIC,
#endif
    0xFD, 0x12,  // Unlock OLED
    0xAE,        // OFF                     /* display off */
    0xA8, 0x7F,  // multiplex 128
    0xA1, 0x00,  // Start line
    0xA2, 0x00,  // Display offset
    0xA0, 0x40 | 0x10 | 0x04 | (0x02 | 0x01),   // REMAP: vertical increment mode
    0xAB, 0x01,  // VDD internal
    0x81, 0x70,  // CONTRAST
    0xB1, 0x55,  // PHASE 0x51
    0xB3, 0x01,  // CLK
//   0xB9,         //Reload grey scale
    0xBC, 0x08,  // PRECHARGE
    0xBE, 0x07,  // VCOMH voltage
    0xB6, 0x01,  // Second pre-charge
    0xA4,        // NORMAL
    0x2E,        // Deactivate scroll
    0xAF,        // Display ON
};



static uint8_t __s_column;
static uint8_t __s_w;
static uint8_t __s_w2;
static uint8_t __s_page;
static uint8_t __s_leftPixel;
static uint8_t __s_pos;

static void set_block_compat(lcduint_t x, lcduint_t y, lcduint_t w)
{
    uint8_t rx = w ? (x + w - 1) : (ssd1306_lcd.width - 1);
    rx = rx < ssd1306_lcd.width ? rx : (ssd1306_lcd.width - 1);
    __s_column = x;
    __s_page = y;
    __s_w = w;
    __s_w2 = rx - x + 1;
    __s_leftPixel = 0;
    __s_pos = __s_column;
    ssd1306_intf.start();
    ssd1306_spiDataMode(0);
    ssd1306_intf.send(0x15);
    ssd1306_intf.send(x / 2);
    ssd1306_intf.send(rx / 2);
    ssd1306_intf.send(0x75);
    ssd1306_intf.send(y<<3);
    ssd1306_intf.send(((y<<3) + 7) < ssd1306_lcd.height ? ((y<<3) + 7) : (ssd1306_lcd.height - 1));
    ssd1306_spiDataMode(1);
}

static void ssd1327_sendPixels(uint8_t data);

static void next_page_compat(void)
{
    ssd1306_intf.stop();
    set_block_compat(__s_column,__s_page + 1, __s_w);
}

//SSD1306_COMPAT_SPI_BLOCK_8BIT_CMDS( 0x15, 0x75 );

static void ssd1327_sendPixels(uint8_t data)
{
    if (!(__s_pos & 0x01))
    {
        __s_leftPixel = data;
        data = 0x00;
    }
    if ((__s_pos & 0x01) || (__s_pos == __s_column + __s_w2 - 1))
    {
        for (uint8_t i=8; i>0; i--)
        {
            uint8_t color = (__s_leftPixel & 0x01) ? (ssd1306_color & 0x0F) : 0;
            color |= (((data & 0x01) ? (ssd1306_color & 0x0F): 0) << 4);
            ssd1306_intf.send(color);
            data >>= 1;
            __s_leftPixel >>= 1;
        }
    }
    __s_pos++;
}

static void ssd1327_sendPixels8(uint8_t data)
{
    ssd1306_intf.send( data );
}

static void ssd1327_sendPixelsBuffer(const uint8_t *buffer, uint16_t len)
{
    while (len--)
    {
        ssd1327_sendPixels(*buffer);
        buffer++;
    }
}


CONTROLLER_NATIVE_SPI_BLOCK_8BIT_CMDS( 0x15, 0x75 );


static void    ssd1327_setMode(lcd_mode_t mode)
{
    if (mode == LCD_MODE_NORMAL)
    {
        ssd1306_lcd.set_block = set_block_native;
        ssd1306_lcd.next_page = next_page_native;
    }
    else if (mode == LCD_MODE_SSD1306_COMPAT )
    {
        ssd1306_lcd.set_block = set_block_compat;
        ssd1306_lcd.next_page = next_page_compat;
    }
    ssd1306_intf.start();
    ssd1306_spiDataMode(0);
    ssd1306_intf.send( 0xA0 );
    ssd1306_intf.send( 0x10 | (mode == LCD_MODE_NORMAL ? 0x00 : 0x04) );
    ssd1306_intf.stop();
    return;
}

void    ssd1327_128x128_init()
{
    ssd1306_lcd.type = LCD_TYPE_CUSTOM;
    ssd1306_lcd.width = 128;  // specify width
    ssd1306_lcd.height = 128; // specify height
    // Set functions for compatible mode
    ssd1306_lcd.set_block = set_block_compat;
    ssd1306_lcd.next_page = next_page_compat;
    ssd1306_lcd.send_pixels1  = ssd1327_sendPixels;
    ssd1306_lcd.send_pixels_buffer1 = ssd1327_sendPixelsBuffer;
    // Set function for 8-bit mode
    ssd1306_lcd.send_pixels8 = ssd1327_sendPixels8;
    ssd1306_lcd.set_mode = ssd1327_setMode;
    // Use one of 2 functions for initialization below
    // Please, read help on this functions and read datasheet before you decide, which
    // one needs to be used. For example, ssd1331 is OK with ssd1306_configureI2cDisplay(),
    // while st7735 can be initialized only with ssd1306_configureSpiDisplay().
    ssd1306_configureI2cDisplay(s_oled_128x128_initData, sizeof(s_oled_128x128_initData));
    delay(100);
}

void   ssd1327_128x128_spi_init(int8_t rstPin, int8_t cesPin, int8_t dcPin)
{
    if (rstPin >=0)
    {
        ssd1306_resetController( rstPin, 10 );
    }
    ssd1306_spiInit(cesPin, dcPin);
    ssd1327_128x128_init();
}