/*
 * lcd.cpp
 *
 *  Created on: 01 мая 2016 г.
 *      Author: Sergey
 */

#include "lcd.h"

static uint8_t LCD_Code;
uint16_t DeviceCode;



void LCD_SetPoint(uint16_t Xpos,uint16_t Ypos,uint16_t point){
	if( Xpos >= MAX_X || Ypos >= MAX_Y ){
		return;
	}
	LCD_SetCursor(Xpos,Ypos);
	LCD_WriteReg(0x0022,point);
}

void LCD_SetCursor( unsigned short Xpos, unsigned short Ypos ){
	LCD_WriteReg(0x0020, Xpos);     /* 0 0    0  239*/
	LCD_WriteReg(0x0021, Ypos);     /* 0 319 319  0*/
	LCD_WriteIndex(0x0022);
}


uint16_t LCD_ReadData(){
	return LCD_RAM;
}

void LCD_WriteReg(uint16_t LCD_Reg,uint16_t LCD_RegValue){
	LCD_WriteIndex(LCD_Reg);
	LCD_WriteData(LCD_RegValue);
}

uint16_t LCD_ReadReg(uint16_t LCD_Reg){
	LCD_WriteIndex(LCD_Reg);
	return LCD_ReadData();
}

void LCD_Clear(uint16_t Color){
	uint32_t index=0;

	LCD_SetCursor(0,0);
	LCD_WriteIndex(0x0022);

	for( index = 0; index < MAX_X * MAX_Y; index++ ){
		LCD_WriteData(Color);
	}
}

void LCD_FillRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color){
	for(uint16_t cy = y; cy < (y + height); ++cy){
		LCD_SetCursor(x,cy);
		for(uint16_t cx = x; cx < (x + width); ++cx){
			LCD_WriteReg(0x0022, color);
			//LCD_SetPoint(cx, cy, color);
		}
	}
}

void LCD_Init(){
	MPU_Region_InitTypeDef MPU_InitStruct;

	// Disable the MPU
	HAL_MPU_Disable();

	// Configure the MPU attributes for 16Mb NOR Flash
	MPU_InitStruct.Enable = MPU_REGION_ENABLE;
	MPU_InitStruct.BaseAddress = 0x60000000;
	MPU_InitStruct.Size = MPU_REGION_SIZE_16MB;
	MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
	MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
	MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
	MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
	MPU_InitStruct.Number = MPU_REGION_NUMBER1;
	MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
	MPU_InitStruct.SubRegionDisable = 0x00;
	MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
	HAL_MPU_ConfigRegion(&MPU_InitStruct);
	// Enable the MPU
	HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);

	HAL_GPIO_WritePin(LCD_RESET_GPIO_Port, LCD_RESET_Pin, GPIO_PIN_RESET);
	HAL_Delay(1);
	HAL_GPIO_WritePin(LCD_RESET_GPIO_Port, LCD_RESET_Pin, GPIO_PIN_SET);

	HAL_Delay(10);
	DeviceCode = 0x0123;
	DeviceCode = LCD_ReadReg(0x0000);		/* Read LCD ID	*/

	if( DeviceCode == 0x9325 || DeviceCode == 0x9328 ){
		LCD_Code = ILI9325;
		//LCD_WriteReg(0xE5, 0x78F0); /* set SRAM internal timing */
		LCD_WriteReg(0x01, 0x0100); /* set Driver Output Control */
		LCD_WriteReg(0x02, 0x0700); /* set 1 line inversion */

		#if (DISP_ORIENTATION == 0)   /* set GRAM write direction and BGR=1 */
		LCD_WriteReg(0x03,(1<<12)|(1<<5)|(1<<4)|(0<<3));
		#elif (DISP_ORIENTATION == 90)
		LCD_WriteReg(0x03,(1<<12)|(0<<5)|(1<<4)|(1<<3));
		#elif (DISP_ORIENTATION == 180)
		LCD_WriteReg(0x03,(1<<12)|(0<<5)|(0<<4)|(0<<3));
		#elif (DISP_ORIENTATION == 270)
		LCD_WriteReg(0x03,(1<<12)|(1<<5)|(0<<4)|(1<<3));
		#endif
		LCD_WriteReg(0x04, 0x0000); /* Resize register */
		LCD_WriteReg(0x08, 0x0207); /* set the back porch and front porch */
		LCD_WriteReg(0x09, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
		LCD_WriteReg(0x0A, 0x0000); /* FMARK function */
		LCD_WriteReg(0x0C, 0x0000); /* RGB interface setting */
		LCD_WriteReg(0x0D, 0x0000); /* Frame marker Position */
		LCD_WriteReg(0x0F, 0x0000); /* RGB interface polarity */
		/*************Power On sequence ****************/
		LCD_WriteReg(0x10, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
		LCD_WriteReg(0x11, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
		LCD_WriteReg(0x12, 0x0000); /* VREG1OUT voltage */
		LCD_WriteReg(0x13, 0x0000); /* VDV[4:0] for VCOM amplitude */
		LCD_WriteReg(0x07, 0x0001);
		HAL_Delay(200);
		/* Dis-charge capacitor power voltage */
		LCD_WriteReg(0x10, 0x1090); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
		LCD_WriteReg(0x11, 0x0227); /* Set DC1[2:0], DC0[2:0], VC[2:0] */
		HAL_Delay(50); 							/* Delay 50ms */
		LCD_WriteReg(0x12, 0x001F);
		HAL_Delay(50); 							/* Delay 50ms */
		LCD_WriteReg(0x13, 0x1500); /* VDV[4:0] for VCOM amplitude */
		LCD_WriteReg(0x29, 0x0027); /* 04 VCM[5:0] for VCOMH */
		LCD_WriteReg(0x2B, 0x000D); /* Set Frame Rate */
		HAL_Delay(50); 							/* Delay 50ms */
		LCD_WriteReg(0x20, 0x0000); /* GRAM horizontal Address */
		LCD_WriteReg(0x21, 0x0000); /* GRAM Vertical Address */
		/* ----------- Adjust the Gamma Curve ---------- */
		LCD_WriteReg(0x30, 0x0000);
		LCD_WriteReg(0x31, 0x0707);
		LCD_WriteReg(0x32, 0x0307);
		LCD_WriteReg(0x35, 0x0200);
		LCD_WriteReg(0x36, 0x0008);
		LCD_WriteReg(0x37, 0x0004);
		LCD_WriteReg(0x38, 0x0000);
		LCD_WriteReg(0x39, 0x0707);
		LCD_WriteReg(0x3C, 0x0002);
		LCD_WriteReg(0x3D, 0x1D04);
		/* ------------------ Set GRAM area --------------- */
		LCD_WriteReg(0x50, 0x0000); /* Horizontal GRAM Start Address */
		LCD_WriteReg(0x51, 0x00EF); /* Horizontal GRAM End Address */
		LCD_WriteReg(0x52, 0x0000); /* Vertical GRAM Start Address */
		LCD_WriteReg(0x53, 0x013F); /* Vertical GRAM Start Address */
		LCD_WriteReg(0x60, 0xA700); /* Gate Scan Line */
		LCD_WriteReg(0x61, 0x0001); /* NDL,VLE, REV */
		LCD_WriteReg(0x6A, 0x0000); /* set scrolling line */
		/* -------------- Partial Display Control --------- */
		LCD_WriteReg(0x80, 0x0000);
		LCD_WriteReg(0x81, 0x0000);
		LCD_WriteReg(0x82, 0x0000);
		LCD_WriteReg(0x83, 0x0000);
		LCD_WriteReg(0x84, 0x0000);
		LCD_WriteReg(0x85, 0x0000);
		/* -------------- Panel Control ------------------- */
		LCD_WriteReg(0x90, 0x0010);
		LCD_WriteReg(0x92, 0x0600);
		LCD_WriteReg(0x07, 0x0133); /* 262K color and display ON */
	}
	HAL_Delay(50);  /* delay 50 ms */
}