File content as of revision 1:74bac5f988d8:

/*****************************************************************************
 * Project      : 7" TFT LCD 800x480 [AT070TN92]
 * Compiler     : mbed Online
 * Type         : Libraries
 * Comment      : Support mbed ST Nucleo Board.
 *              : Support Chip = SSD1963
 * File         : SSD1963.c
 *
 * Author       : Mr.Thongchai Artsamart [Bird Techstep]
 * E-Mail       : t.artsamart@gmail.com
 *              : tbird_th@hotmail.com
 * Start Date   : 20/03/2014 [dd/mm/yyyy]
 * Version Date : 20/03/2014 [dd/mm/yyyy]
 * Licensed under a Creative Commons Attribution-ShareAlike 3.0 License.
 *****************************************************************************
 * Remark    : Thank you -. no1wudi [CooCox]
 *                       -.
 *****************************************************************************/
#include "mbed.h"
#include "SSD1963.h"
//#include "tFontLCD.c"
//#include "stm32f4xx.h"

/*
#define  HDP 799     // [ 799][ 799] Horizontal Display Period
#define  HT  928     // [ 928][1000] Horizontal Total
#define  HPS 46      // [  46][  51] LLINE Pulse Start Position
#define  LPS 15      // [  15][   3] Horizontal Display Period Start Position
#define  HPW 48      // [  48][   8] LLINE Pulse Width
#define  VDP 479     // [ 479][ 479] Vertical Display Period
#define  VT  525     // [ 525][ 530] Vertical Total
#define  VPS 16      // [  16][  24] LFRAME Pulse Start Position
#define  FPS 8       // [   8][  23] Vertical Display Period Start Position
#define  VPW 16      // [  16][   3] LFRAME Pulse Width
*/

SSD1963::SSD1963(PinName CS, PinName RESET, PinName RS, PinName WR, BusInOut* DATA_PORT, PinName RD):
_lcd_pin_cs( CS ), _lcd_pin_rs( RS ), _lcd_pin_reset( RESET ), _lcd_pin_wr( WR ), _lcd_pin_rd(RD)
{
    begin();
}

void SSD1963::Activate( void )
{
    _lcd_pin_cs = LOW;
}

inline
void SSD1963::Deactivate( void )
{
    _lcd_pin_cs = HIGH;
}

void SSD1963::writeData(uint16_t data) {
    Activate();
    _lcd_pin_rs = HIGH;
    _lcd_pin_wr = LOW;
     _lcd_port->output();
    _lcd_port->write( data );
    wait_us(1);
    _lcd_pin_wr = HIGH;
    Deactivate();
}

void SSD1963::writeCommand(uint16_t cmd) {
    Activate();
    _lcd_pin_rs = LOW;
    _lcd_pin_wr = LOW;
    _lcd_port->output();
    _lcd_port->write( cmd );
    wait_us(1);
    _lcd_pin_wr = HIGH;
    _lcd_pin_rs = HIGH;
    Deactivate();
}

uint16_t SSD1963::readData(void) {
    uint16_t data = 0x0000;
    Activate();
    _lcd_pin_rs = HIGH; _lcd_pin_rd = LOW;
    wait_us(10);
    _lcd_port->input();
    data = _lcd_port->read() & 0xFFFF;
    wait_us(1);
    _lcd_pin_rd = HIGH;
    Deactivate();
    return data;
}

void SSD1963::writeRegister(uint16_t addr, uint16_t data) {
    writeCommand(addr);
    writeData(data);
}

void SSD1963::reset(void) {
    _lcd_pin_reset = HIGH;
    wait_ms( 5 );
    _lcd_pin_reset = LOW;
    wait_ms( 15 );
    _lcd_pin_reset = HIGH;
    _lcd_pin_cs = HIGH;
    _lcd_pin_rd = HIGH;
    _lcd_pin_wr = HIGH;
    _lcd_pin_rs = HIGH;
}

void SSD1963::begin() {
    reset();
    wait_ms(10);
    // Set PLL MN -------------------------------------------------------------
    // @Parameters : 3
    writeCommand(0xE2);
    writeData(0x01);             // N[7:0] : Multiplier (N) of PLL. (POR = 00101101) b00100011
    writeData(0x02);             // M[3:0] : Divider (M) of PLL. (POR = 0011)
    writeData(0x54);             // C[2] : Effectuate MN value (POR = 100) - Effectuate the multiplier and divider value
    
    // Set PLL
    // @Parameters : 1
    writeCommand(0xE0);
    writeData(0x01);             // Use reference clock as system clock & Enable PLL
    wait_us(100);                  // Wait 100us to let the PLL stable
    writeCommand(0xE0);             // Set PLL
    writeData(0x03);             // Use PLL output as system clock & Enable PLL
    wait_us(100); 

    // Software Reset ---------------------------------------------------------
    writeCommand(0x01);
    wait_us(100);   

    // Set LSHIFT Frequency ---------------------------------------------------
    // @Parameters : 3
    writeCommand(0xE6);             // Set LSHIFT Frequency
    writeData(0x03);             // LCDC_FPR[19:16] : The highest 4 bits for the pixel clock frequency settings
    writeData(0xFF);             // LCDC_FPR[15:8]  : The higher byte for the pixel clock frequency settings
    writeData(0xFF);             // LCDC_FPR[7:0]   : The low byte for the pixel clock frequency settings

    // Set LCD Mode
    // @Parameters : 7
    writeCommand(0xB0);
    /*
    writeData(0x00);             // A[5..0] TFT
    //writeData(0x10);
    writeData(0x00);             // B[7..5]   : Hsync+Vsync +DE mode & TFT mode
    //writeData(0x80);
    writeData((HDP>>8)&0xFF);    // HPS[10:8] : Set the horizontal panel size (POR = 010)
    writeData(HDP&0xFF);         // HPS[7:0]  : Set the horizontal panel size (POR = 01111111)
    writeData((VDP>>8)&0xFF);    // VPS[10:8] : Set the vertical panel size (POR = 001)
    writeData(VDP&0xFF);         // VPS[7:0]  : Set the vertical panel size (POR = 11011111)
    writeData(0x00);             // G[5..0]   : Even line RGB sequence & Odd line RGB sequence
    */
    writeData(0x10);                // set 18-bit for 7" panel TY700TFT800480
    writeData(0x80);                // set TTL mode
    writeData((DISP_HOR_RESOLUTION-1)>>8); //Set panel size
    writeData(DISP_HOR_RESOLUTION-1);
    writeData((DISP_VER_RESOLUTION-1)>>8);
    writeData(DISP_VER_RESOLUTION-1);
    writeData(0x00);
    
    
    // Set Horizontal Period --------------------------------------------------
    // @Parameters : 8
    writeCommand(0xB4);
    /*
    writeData((HT>>8)&0xFF);     // HT[10:8]   : High byte of horizontal total period (display + non-display) in pixel clock
    writeData(HT&0xFF);          // HT[7:0]    : Low byte of the horizontal total period (display + non-display) in pixel clock
    writeData((HPS>>8)&0xFF);    // HPS[10:8]  : High byte of the non-display period between the start of the horizontal sync (LLINE) signal
    writeData(HPS&0xFF);         // HPS[7:0]   : Low byte of the non-display period between the start of the horizontal sync (LLINE) signal
    writeData(HPW&0xFF);         // HPW[6:0]   : Set the horizontal sync pulse width (LLINE) in pixel clock
    writeData((LPS>>8)&0xFF);    // LPS[10:8]  : Set the horizontal sync pulse (LLINE) start location in pixel clock
    writeData(LPS&0xFF);         // LPS[7:0]   : Set the horizontal sync pulse width (LLINE) in start.
    writeData(0x00);             // LPSPP[1:0] : Set the horizontal sync pulse subpixel start position
    */
    #define HT (DISP_HOR_RESOLUTION+DISP_HOR_PULSE_WIDTH+DISP_HOR_BACK_PORCH+DISP_HOR_FRONT_PORCH)
    writeData((HT-1)>>8);   
    writeData(HT-1);
    #define HPS (DISP_HOR_PULSE_WIDTH+DISP_HOR_BACK_PORCH)
    writeData((HPS-1)>>8);
    writeData(HPS-1);
    writeData(DISP_HOR_PULSE_WIDTH-1);
    writeData(0x00);
    writeData(0x00);
    writeData(0x00);
    
    // Set Vertical Period ----------------------------------------------------
    // @Parameters : 7
    writeCommand(0xB6);
    /*
    writeData((VT>>8)&0xFF);     // VT[10:8]  : High byte of the vertical total (display + non-display) period in lines
    writeData(VT&0xFF);          // VT[7:0]   : Low byte of the vertical total (display + non-display) period in lines
    writeData((VPS>>8)&0xFF);    // VPS[10:8] : High byte the non-display period in lines between the start of the frame and the first display data in line
    writeData(VPS&0xFF);         // VPS[7:0]  : The non-display period in lines between the start of the frame and the first display data in line
    writeData(VPW&0xFF);         // VPW[6:0]  : Set the vertical sync pulse width (LFRAME) in lines
    writeData((FPS>>8)&0xFF);    // FPS[10:8] : High byte of the vertical sync pulse (LFRAME) start location in lines
    writeData(FPS&0xFF);         // FPS[7:0]  : Low byte of the vertical sync pulse (LFRAME) start location in lines
    */
    #define VT (DISP_VER_PULSE_WIDTH+DISP_VER_BACK_PORCH+DISP_VER_FRONT_PORCH+DISP_VER_RESOLUTION)
    writeData((VT-1)>>8);
    writeData(VT-1);
    #define VSP (DISP_VER_PULSE_WIDTH+DISP_VER_BACK_PORCH)
    writeData((VSP-1)>>8);
    writeData(VSP-1);
    writeData(DISP_VER_PULSE_WIDTH-1);
    writeData(0x00);
    writeData(0x00);
    
    // Set GPIO Value ---------------------------------------------------------
    // @Parameters : 1
    writeCommand(0xBA);
    writeData(0x05);             // A[3..0] : GPIO[2:0] Output 1
    
    // Set GPIO Configuration
    // @Parameters : 2
    writeCommand(0xB8);
    writeData(0x07);             // A[7..0] : GPIO3 = Input, GPIO[2:0] = Output
    writeData(0x01);             // B[0] : GPIO0 Normal
    
        //Set pixel format, i.e. the bpp
    writeCommand(0x3A);
    writeData(0x55);                // set 16bpp

    // Set Address Mode -------------------------------------------------------
    // @Parameters : 1
    //writeCommand(0x36);             // Set Rotation
    //writeData(0x00);             // A[7..0] : Set the read order from host processor to frame buffer by A[7:5] and A[3] and 
                                                       // from frame buffer to the display panel by A[2:0] and A[4].
                                                       // A[7] : Page address order
    // Set Pixel Data Interface -----------------------------------------------
    // @Parameters : 1
    writeCommand(0xF0);             // A[2:0] : Pixel Data Interface Format
    writeData(0x03);             // 16-bit (565 format)
    wait_us(100);
    
    writeCommand(0x34);
    wait_ms(1);
    
    // enter_partial_mode
    //writeCommand(0x12);             // Part of the display area is used for image display
    // set_display_on
    writeCommand(0x29);             // Show the image on the display device
    
    //writeCommand(0x2C);
}

void SSD1963::fillScreen(uint16_t color){
    uint16_t start_x = 0;
    uint16_t end_x   = 799;
    uint16_t start_y = 0;
    uint16_t end_y   = 479;
    
    writeCommand(0x2A);
    //nCS_LOW;
    writeData(start_x >> 8);
    writeData(start_x);
    writeData(end_x >> 8);
    writeData(end_x);
    //nCS_HIGH;
    writeCommand(0x2B);
    //nCS_LOW;
    writeData(start_y >> 8);
    writeData(start_y);
    writeData(end_y >> 8);
    writeData(end_y);
    //nCS_HIGH;
    
    writeCommand(0x2C);

    uint16_t i,j;
    for(i = 0; i < TFTWIDTH; i++){
        for (j = 0; j < TFTHEIGHT; j++){
            writeData(color);
        }
    }
}

// - Color RGB R5 G6 B5 -------------------------------------------------------
uint16_t SSD1963::Color565(uint8_t r, uint8_t g, uint8_t b) {
  uint16_t c;
  c = r >> 3;
  c <<= 6;
  c |= g >> 2;
  c <<= 5;
  c |= b >> 3;
  return c;
}

uint8_t SSD1963::readID(void){
    writeCommand(0x0000);
    return readData();
}