ili934x.h

/*  Author: Steve Gunn
 * Licence: This work is licensed under the Creative Commons Attribution License.
 *           View this license at http://creativecommons.org/about/licenses/
 */
#ifndef _ILI934x_H
#define _ILI934x_H

#define BLC			4
#define RESET		7

#define CMD_ADDR  0x4000
#define DATA_ADDR 0x4100

#define write_cmd(cmd)				asm volatile("sts %0,%1" :: "i" (CMD_ADDR), "r" (cmd) : "memory");
#define write_data(data)			asm volatile("sts %0,%1" :: "i" (DATA_ADDR), "r" (data) : "memory");
#define write_data16(data)			asm volatile("sts %0,%B1 \n\t sts %0,%A1" :: "i" (DATA_ADDR), "r" (data)  : "memory");
#define write_cmd_data(cmd, data)	asm volatile("sts %0,%1 \n\t sts %2,%3" :: "i" (CMD_ADDR), "r" (cmd), "i" (DATA_ADDR), "r" (data)  : "memory");
  
/* Basic Commands */
#define NO_OPERATION								0x00
#define SOFTWARE_RESET								0x01
#define READ_DISPLAY_IDENTIFICATION_INFORMATION		0x04
#define READ_DISPLAY_STATUS							0x09
#define READ_DISPLAY_POWER_MODE						0x0A
#define READ_DISPLAY_MADCTL							0x0B
#define READ_DISPLAY_PIXEL_FORMAT					0x0C
#define READ_DISPLAY_IMAGE_FORMAT					0x0D
#define READ_DISPLAY_SIGNAL_MODE					0x0E
#define READ_DISPLAY_SELF_DIAGNOSTIC_RESULT			0x0F
#define ENTER_SLEEP_MODE							0x10
#define SLEEP_OUT									0x11	
#define PARTIAL_MODE_ON								0x12
#define NORMAL_DISPLAY_MODE_ON						0x13
#define DISPLAY_INVERSION_OFF						0x20
#define DISPLAY_INVERSION_ON						0x21
#define GAMMA_SET									0x26
#define DISPLAY_OFF									0x28
#define DISPLAY_ON									0x29
#define COLUMN_ADDRESS_SET							0x2A
#define PAGE_ADDRESS_SET							0x2B
#define MEMORY_WRITE								0x2C
#define COLOR_SET									0x2D
#define MEMORY_READ									0x2E
#define PARTIAL_AREA								0x30
#define VERTICAL_SCROLLING_DEFINITION				0x33
#define TEARING_EFFECT_LINE_OFF						0x34
#define TEARING_EFFECT_LINE_ON						0x35
#define MEMORY_ACCESS_CONTROL						0x36	
#define VERTICAL_SCROLLING_START_ADDRESS			0x37
#define IDLE_MODE_OFF								0x38
#define IDLE_MODE_ON								0x39
#define PIXEL_FORMAT_SET							0x3A
#define WRITE_MEMORY_CONTINUE						0x3C
#define READ_MEMORY_CONTINUE						0x3E
#define SET_TEAR_SCANLINE							0x44
#define GET_SCANLINE								0x45
#define WRITE_DISPLAY_BRIGHTNESS					0x51
#define READ_DISPLAY_BRIGHTNESS						0x52
#define WRITE_CTRL_DISPLAY							0x53
#define READ_CTRL_DISPLAY							0x54
#define WRITE_CONTENT_ADAPTIVE_BRIGHTNESS_CONTROL	0x55
#define READ_CONTENT_ADAPTIVE_BRIGHTNESS_CONTROL	0x56
#define WRITE_CABC_MINIMUM_BRIGHTNESS				0x5E
#define READ_CABC_MINIMUM_BRIGHTNESS				0x5F
#define READ_ID1									0xDA
#define READ_ID2									0xDB
#define READ_ID3									0xDC

/* Extended Commands */
#define RGB_INTERFACE_SIGNAL_CONTROL				0xB0
#define FRAME_CONTROL_IN_NORMAL_MODE				0xB1
#define FRAME_CONTROL_IN_IDLE_MODE					0xB2
#define FRAME_CONTROL_IN_PARTIAL_MODE				0xB3
#define DISPLAY_INVERSION_CONTROL					0xB4
#define BLANKING_PORCH_CONTROL						0xB5
#define DISPLAY_FUNCTION_CONTROL					0xB6
#define ENTRY_MODE_SET								0xB7
#define BACKLIGHT_CONTROL_1							0xB8
#define BACKLIGHT_CONTROL_2							0xB9
#define BACKLIGHT_CONTROL_3							0xBA
#define BACKLIGHT_CONTROL_4							0xBB
#define BACKLIGHT_CONTROL_5							0xBC
#define BACKLIGHT_CONTROL_7							0xBE
#define BACKLIGHT_CONTROL_8							0xBF
#define POWER_CONTROL_1								0xC0
#define POWER_CONTROL_2								0xC1
#define POWER_CONTROL3_(FOR_NORMAL_MODE)			0xC2
#define POWER_CONTROL4_(FOR_IDLE_MODE)				0xC3
#define POWER_CONTROL5_(FOR_PARTIAL_MODE)			0xC4
#define VCOM_CONTROL_1								0xC5
#define VCOM_CONTROL_2								0xC7
#define NV_MEMORY_WRITE								0xD0
#define NV_MEMORY_PROTECTION_KEY					0xD1
#define NV_MEMORY_STATUS_READ						0xD2
#define READ_ID4									0xD3
#define POSITIVE_GAMM_CORRECTION					0xE0
#define NEGATIVE_GAMMA_CORRECTION					0xE1
#define DIGITAL_GAMMA_CONTROL						0xE2
#define DIGITAL_GAMMA_CONTROL2						0xE3
#define INTERFACE_CONTROL							0xF6

/* Undocumented commands */
#define INTERNAL_IC_SETTING							0xCB
#define GAMMA_DISABLE								0xF2

inline uint16_t read_data16(){
    uint16_t result;
    asm volatile("lds %A0,%1 \n\t lds %B0,%1" : "=r" (result) : "i" (DATA_ADDR) : "memory");
    return result;
}

inline unsigned char read_data(){
    unsigned char result;
    asm volatile("lds %A0,%1" : "=r" (result) : "i" (DATA_ADDR) : "memory");
    return result;
}

#endif //_ILI934x_H