display_ST7626 - A lib for accessing ST7626 based lcds. It provid…

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A lib for accessing ST7626 based lcds. It provides a set_pixel function. It is only tested with one display.

lcd.c@5:70dcbb284628, 2011-01-09 (annotated)

Committer:: nullsub
Date:: Sun Jan 09 22:04:01 2011 +0000
Revision:: 5:70dcbb284628
Parent:: 3:5b7d04c36d1a

Who changed what in which revision?

User	Revision	Line number	New contents of line
nullsub	0:9b24f296bc0e	1	#ifndef lcd_c
nullsub	0:9b24f296bc0e	2	#define lcd_c lcd_c
nullsub	0:9b24f296bc0e	3	#include "lcd.h"
nullsub	0:9b24f296bc0e	4
nullsub	1:ae0b4880e9db	5	#ifdef LCD_BACKLIGHT_LED
nullsub	0:9b24f296bc0e	6	DigitalOut lcd_led(LCD_LED);
nullsub	1:ae0b4880e9db	7	#endif
nullsub	1:ae0b4880e9db	8
nullsub	0:9b24f296bc0e	9	DigitalOut lcd_a0(LCD_A0);
nullsub	0:9b24f296bc0e	10	DigitalOut lcd_cs(LCD_CS);
nullsub	0:9b24f296bc0e	11	DigitalOut lcd_wr(LCD_WR);
nullsub	0:9b24f296bc0e	12	DigitalOut lcd_reset(LCD_RESET);
nullsub	0:9b24f296bc0e	13
nullsub	0:9b24f296bc0e	14	PortOut lcd_data_l(LCD_DATA_PORT_L, LCD_DATA_PORT_MASK_L);
nullsub	0:9b24f296bc0e	15	PortOut lcd_data_h(LCD_DATA_PORT_H, LCD_DATA_PORT_MASK_H);
nullsub	0:9b24f296bc0e	16
nullsub	0:9b24f296bc0e	17	//////////////////////////////////////////////////////////////////////////
nullsub	0:9b24f296bc0e	18	void LoadPaint(void) {
nullsub	0:9b24f296bc0e	19	Write(COMMAND, 0x31); // Ext = 1
nullsub	0:9b24f296bc0e	20	Write(COMMAND, 0x20); // Palette FRC1 Setup
nullsub	0:9b24f296bc0e	21	Write(DATA, 0x00); // RGB Level0 Setup
nullsub	0:9b24f296bc0e	22	Write(DATA, 0x02); // RGB Level1 Setup
nullsub	0:9b24f296bc0e	23	Write(DATA, 0x04); // RGB Level2 Setup
nullsub	0:9b24f296bc0e	24	Write(DATA, 0x06); // RGB Level3 Setup
nullsub	0:9b24f296bc0e	25	Write(DATA, 0x08); // RGB Level4 Setup
nullsub	0:9b24f296bc0e	26	Write(DATA, 0x0A); // RGB Level5 Setup
nullsub	0:9b24f296bc0e	27	Write(DATA, 0x0C); // RGB Level6 Setup
nullsub	0:9b24f296bc0e	28	Write(DATA, 0x0E); // RGB Level7 Setup
nullsub	0:9b24f296bc0e	29	Write(DATA, 0x10); // RGB Level8 Setup
nullsub	0:9b24f296bc0e	30	Write(DATA, 0x12); // RGB Level9 Setup
nullsub	0:9b24f296bc0e	31	Write(DATA, 0x14); // RGB Level10 Setup
nullsub	0:9b24f296bc0e	32	Write(DATA, 0x16); // RGB Level11 Setup
nullsub	0:9b24f296bc0e	33	Write(DATA, 0x18); // RGB Level12 Setup
nullsub	0:9b24f296bc0e	34	Write(DATA, 0x1A); // RGB Level13 Setup
nullsub	0:9b24f296bc0e	35	Write(DATA, 0x1C); // RGB Level14 Setup
nullsub	0:9b24f296bc0e	36	Write(DATA, 0x1E); // RGB Level15 Setup
nullsub	0:9b24f296bc0e	37
nullsub	0:9b24f296bc0e	38	Write(COMMAND, 0x21); // Palette FRC2 Setup
nullsub	0:9b24f296bc0e	39	Write(DATA, 0x00); // RGB Level0 Setup
nullsub	0:9b24f296bc0e	40	Write(DATA, 0x02); // RGB Level1 Setup
nullsub	0:9b24f296bc0e	41	Write(DATA, 0x04); // RGB Level2 Setup
nullsub	0:9b24f296bc0e	42	Write(DATA, 0x06); // RGB Level3 Setup
nullsub	0:9b24f296bc0e	43	Write(DATA, 0x08); // RGB Level4 Setup
nullsub	0:9b24f296bc0e	44	Write(DATA, 0x0A); // RGB Level5 Setup
nullsub	0:9b24f296bc0e	45	Write(DATA, 0x0C); // RGB Level6 Setup
nullsub	0:9b24f296bc0e	46	Write(DATA, 0x0E); // RGB Level7 Setup
nullsub	0:9b24f296bc0e	47	Write(DATA, 0x10); // RGB Level8 Setup
nullsub	0:9b24f296bc0e	48	Write(DATA, 0x12); // RGB Level9 Setup
nullsub	0:9b24f296bc0e	49	Write(DATA, 0x14); // RGB Level10 Setup
nullsub	0:9b24f296bc0e	50	Write(DATA, 0x16); // RGB Level11 Setup
nullsub	0:9b24f296bc0e	51	Write(DATA, 0x18); // RGB Level12 Setup
nullsub	0:9b24f296bc0e	52	Write(DATA, 0x1A); // RGB Level13 Setup
nullsub	0:9b24f296bc0e	53	Write(DATA, 0x1C); // RGB Level14 Setup
nullsub	0:9b24f296bc0e	54	Write(DATA, 0x1E); // RGB Level15 Setup
nullsub	0:9b24f296bc0e	55
nullsub	0:9b24f296bc0e	56	Write(COMMAND, 0x22); // Palette FRC3 Setup
nullsub	0:9b24f296bc0e	57	Write(DATA, 0x00); // RGB Level0 Setup
nullsub	0:9b24f296bc0e	58	Write(DATA, 0x02); // RGB Level1 Setup
nullsub	0:9b24f296bc0e	59	Write(DATA, 0x04); // RGB Level2 Setup
nullsub	0:9b24f296bc0e	60	Write(DATA, 0x06); // RGB Level3 Setup
nullsub	0:9b24f296bc0e	61	Write(DATA, 0x08); // RGB Level4 Setup
nullsub	0:9b24f296bc0e	62	Write(DATA, 0x0A); // RGB Level5 Setup
nullsub	0:9b24f296bc0e	63	Write(DATA, 0x0C); // RGB Level6 Setup
nullsub	0:9b24f296bc0e	64	Write(DATA, 0x0E); // RGB Level7 Setup
nullsub	0:9b24f296bc0e	65	Write(DATA, 0x10); // RGB Level8 Setup
nullsub	0:9b24f296bc0e	66	Write(DATA, 0x12); // RGB Level9 Setup
nullsub	0:9b24f296bc0e	67	Write(DATA, 0x14); // RGB Level10 Setup
nullsub	0:9b24f296bc0e	68	Write(DATA, 0x16); // RGB Level11 Setup
nullsub	0:9b24f296bc0e	69	Write(DATA, 0x18); // RGB Level12 Setup
nullsub	0:9b24f296bc0e	70	Write(DATA, 0x1A); // RGB Level13 Setup
nullsub	0:9b24f296bc0e	71	Write(DATA, 0x1C); // RGB Level14 Setup
nullsub	0:9b24f296bc0e	72	Write(DATA, 0x1E); // RGB Level15 Setup
nullsub	0:9b24f296bc0e	73
nullsub	0:9b24f296bc0e	74	Write(COMMAND, 0x23); // Palette FRC4 Setup
nullsub	0:9b24f296bc0e	75	Write(DATA, 0x00); // RGB Level0 Setup
nullsub	0:9b24f296bc0e	76	Write(DATA, 0x02); // RGB Level1 Setup
nullsub	0:9b24f296bc0e	77	Write(DATA, 0x04); // RGB Level2 Setup
nullsub	0:9b24f296bc0e	78	Write(DATA, 0x06); // RGB Level3 Setup
nullsub	0:9b24f296bc0e	79	Write(DATA, 0x08); // RGB Level4 Setup
nullsub	0:9b24f296bc0e	80	Write(DATA, 0x0A); // RGB Level5 Setup
nullsub	0:9b24f296bc0e	81	Write(DATA, 0x0C); // RGB Level6 Setup
nullsub	0:9b24f296bc0e	82	Write(DATA, 0x0E); // RGB Level7 Setup
nullsub	0:9b24f296bc0e	83	Write(DATA, 0x10); // RGB Level8 Setup
nullsub	0:9b24f296bc0e	84	Write(DATA, 0x12); // RGB Level9 Setup
nullsub	0:9b24f296bc0e	85	Write(DATA, 0x14); // RGB Level10 Setup
nullsub	0:9b24f296bc0e	86	Write(DATA, 0x16); // RGB Level11 Setup
nullsub	0:9b24f296bc0e	87	Write(DATA, 0x18); // RGB Level12 Setup
nullsub	0:9b24f296bc0e	88	Write(DATA, 0x1A); // RGB Level13 Setup
nullsub	0:9b24f296bc0e	89	Write(DATA, 0x1C); // RGB Level14 Setup
nullsub	0:9b24f296bc0e	90	Write(DATA, 0x1E); // RGB Level15 Setup
nullsub	0:9b24f296bc0e	91	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	92	}
nullsub	0:9b24f296bc0e	93
nullsub	0:9b24f296bc0e	94	void LoadEEPROM(void) {
nullsub	0:9b24f296bc0e	95	Write(COMMAND, 0x31); // Ext = 1
nullsub	0:9b24f296bc0e	96	Write(COMMAND, 0xcd); // Enable EEPROM
nullsub	0:9b24f296bc0e	97	Write(DATA, 0x00); //
nullsub	0:9b24f296bc0e	98	wait_ms(50); // Delay 50ms
nullsub	0:9b24f296bc0e	99	Write(COMMAND, 0xfd); // Load EEPROM
nullsub	0:9b24f296bc0e	100	wait_ms(50); // Delay 50ms
nullsub	0:9b24f296bc0e	101	Write(COMMAND, 0xcc); // Disable EEPROM
nullsub	0:9b24f296bc0e	102	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	103	}
nullsub	0:9b24f296bc0e	104
nullsub	0:9b24f296bc0e	105	void ST7626_Init(void) {
nullsub	0:9b24f296bc0e	106	lcd_cs = 1;
nullsub	1:ae0b4880e9db	107	/* lcd_reset = 0;
nullsub	1:ae0b4880e9db	108	wait_ms(10);
nullsub	1:ae0b4880e9db	109	lcd_reset = 1;
nullsub	1:ae0b4880e9db	110	wait_ms(50);*/
nullsub	0:9b24f296bc0e	111	resetdisp();
nullsub	0:9b24f296bc0e	112
nullsub	0:9b24f296bc0e	113	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	114	Write(COMMAND, 0x04); // Sleep In/Out Preparation
nullsub	0:9b24f296bc0e	115	Write(DATA, 0x3e); // Sleep In/Out Sequencing
nullsub	0:9b24f296bc0e	116	Write(COMMAND, 0x31); // Ext = 1
nullsub	0:9b24f296bc0e	117	Write(COMMAND, 0xf4); // Internal Initialize Preparation
nullsub	0:9b24f296bc0e	118	Write(DATA, 0x58); // Internal Initialize Sequencing
nullsub	0:9b24f296bc0e	119	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	120	Write(COMMAND, 0x94); // Sleep Out
nullsub	0:9b24f296bc0e	121	Write(COMMAND, 0xd1); // Internal OSC on
nullsub	0:9b24f296bc0e	122	Write(COMMAND, 0xca); // Display Control
nullsub	0:9b24f296bc0e	123	Write(DATA, 0x00); // CL divisions Ratio
nullsub	0:9b24f296bc0e	124	Write(DATA, 0x10); // Duty Setting (= 68)
nullsub	0:9b24f296bc0e	125	Write(DATA, 0x00); // N-Line Inverse-set value
nullsub	0:9b24f296bc0e	126	Write(COMMAND, 0x31); // Ext = 1
nullsub	0:9b24f296bc0e	127	Write(COMMAND, 0x32); // Analog Setting
nullsub	0:9b24f296bc0e	128	Write(DATA, 0x00); // OSC Freqency adjustment
nullsub	0:9b24f296bc0e	129	Write(DATA, 0x02); // Booster Efficiency Setting = Level 3
nullsub	0:9b24f296bc0e	130	Write(DATA, 0x03); // Bias Setting (=1/9)
nullsub	0:9b24f296bc0e	131	Write(DATA, 0x04); // Booster X 5
nullsub	0:9b24f296bc0e	132	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	133	Write(COMMAND, 0x81); // Electronic Volume Control
nullsub	1:ae0b4880e9db	134	Write(DATA, 0x1d); // EV:Vop[5:0]_6bit //previously Write(DATA,0x2D);
nullsub	0:9b24f296bc0e	135	Write(DATA, 0x02); // EV:Vop[8:6]_3bit
nullsub	0:9b24f296bc0e	136	// Vop is 10.52V under this condition for example
nullsub	0:9b24f296bc0e	137	Write( COMMAND, 0x20); // Power Control
nullsub	0:9b24f296bc0e	138	Write( DATA, 0x0b); // B/F/R = On/On/On
nullsub	0:9b24f296bc0e	139	wait_ms(50); // Delay 50ms
nullsub	0:9b24f296bc0e	140	LoadEEPROM(); // Load EEPROM (refer page 68)
nullsub	0:9b24f296bc0e	141	LoadPaint(); // Load Gamma Table Parameter (refer page 64)
nullsub	0:9b24f296bc0e	142	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	143	Write(COMMAND, 0xa7); // Inverse Display
nullsub	0:9b24f296bc0e	144	Write(COMMAND, 0xbb); // Com Scan Direction
nullsub	0:9b24f296bc0e	145	Write(DATA, 0x01); // 0~33 / 67~34
nullsub	0:9b24f296bc0e	146	Write(COMMAND, 0xbc); // Data Scan Direction
nullsub	0:9b24f296bc0e	147	Write(DATA, 0x00); // Page / Column Address Setting
nullsub	0:9b24f296bc0e	148	Write(DATA, 0x00); // RGB arrangement (0:RGB 1:BGR)
nullsub	0:9b24f296bc0e	149	Write(DATA, 0x01); // Gray-scale setup ( 64-gray: 01H)
nullsub	0:9b24f296bc0e	150	Write(COMMAND, 0x75); // Page address set
nullsub	0:9b24f296bc0e	151	Write(DATA, 0x00); // From page address 0
nullsub	0:9b24f296bc0e	152	Write(DATA, 0x43); // to page address 67
nullsub	0:9b24f296bc0e	153	Write(COMMAND, 0x15); // Column address set
nullsub	0:9b24f296bc0e	154	Write(DATA, 0x00); // From column address 0
nullsub	0:9b24f296bc0e	155	Write(DATA, 0x5f); // to column address 97
nullsub	0:9b24f296bc0e	156	Write(COMMAND, 0xaf); // Display On
nullsub	0:9b24f296bc0e	157	Write(COMMAND, 0x30); // Ext = 0
nullsub	1:ae0b4880e9db	158	#ifdef LCD_BACKLIGHT_LED
nullsub	0:9b24f296bc0e	159	lcd_led = 1;
nullsub	1:ae0b4880e9db	160	#endif
nullsub	0:9b24f296bc0e	161	}
nullsub	0:9b24f296bc0e	162
nullsub	0:9b24f296bc0e	163
nullsub	5:70dcbb284628	164	void lcd_putpixel( int x, int y, int16_t color) {
nullsub	1:ae0b4880e9db	165	Write(COMMAND, 0x30); // Ext = 0
nullsub	1:ae0b4880e9db	166	Write(COMMAND, 0x15); // Column address set
nullsub	1:ae0b4880e9db	167	Write(DATA, x); // From column address 0 to 97
nullsub	1:ae0b4880e9db	168	Write(DATA, x+1 );
nullsub	1:ae0b4880e9db	169	Write(COMMAND, 0x75); // Page address set
nullsub	1:ae0b4880e9db	170	Write(DATA, y); // From page address 0 to 67
nullsub	1:ae0b4880e9db	171	Write(DATA, y+1);
nullsub	1:ae0b4880e9db	172	Write(COMMAND, 0x5c); // Entry Memory Write Mode
nullsub	1:ae0b4880e9db	173
nullsub	5:70dcbb284628	174	Write(DATA, (int8_t) (color>>8));
nullsub	5:70dcbb284628	175	Write(DATA, (int8_t) (color));
nullsub	5:70dcbb284628	176
nullsub	1:ae0b4880e9db	177	}
nullsub	1:ae0b4880e9db	178
nullsub	1:ae0b4880e9db	179
nullsub	1:ae0b4880e9db	180
nullsub	1:ae0b4880e9db	181
nullsub	5:70dcbb284628	182	void lcd_clear(int16_t GroundColor) {
nullsub	0:9b24f296bc0e	183	unsigned char i, j;
nullsub	0:9b24f296bc0e	184	Write(COMMAND, 0x30); // Ext = 0
nullsub	0:9b24f296bc0e	185	Write(COMMAND, 0x15); // Column address set
nullsub	0:9b24f296bc0e	186	Write(DATA, 0); // From column address 0 to 97
nullsub	0:9b24f296bc0e	187	Write(DATA, 97 );
nullsub	0:9b24f296bc0e	188	Write(COMMAND, 0x75); // Page address set
nullsub	0:9b24f296bc0e	189	Write(DATA, 0); // From page address 0 to 67
nullsub	0:9b24f296bc0e	190	Write(DATA, 67);
nullsub	0:9b24f296bc0e	191	Write(COMMAND, 0x5c); // Entry Memory Write Mode
nullsub	0:9b24f296bc0e	192
nullsub	0:9b24f296bc0e	193
nullsub	0:9b24f296bc0e	194	for (j = 0; j < 68 ; j++) {
nullsub	0:9b24f296bc0e	195	for (i = 0 ; i < 98 ; i++) {
nullsub	5:70dcbb284628	196	Write(DATA, (int8_t) (GroundColor>>8));
nullsub	5:70dcbb284628	197	Write(DATA, (int8_t) (GroundColor));
nullsub	5:70dcbb284628	198
nullsub	0:9b24f296bc0e	199	}
nullsub	0:9b24f296bc0e	200	}
nullsub	0:9b24f296bc0e	201	}
nullsub	0:9b24f296bc0e	202
nullsub	1:ae0b4880e9db	203	void Write(unsigned char mode, int8_t data) {
nullsub	0:9b24f296bc0e	204	if (mode) {
nullsub	0:9b24f296bc0e	205	lcd_a0 = 1; // LCD_PORT_COM \|= (1<<LCD_A0);//A0=1;
nullsub	0:9b24f296bc0e	206	} else {
nullsub	0:9b24f296bc0e	207	lcd_a0 = 0; //LCD_PORT_COM &= ~(1<<LCD_A0);//A0=0;
nullsub	0:9b24f296bc0e	208	}
nullsub	0:9b24f296bc0e	209
nullsub	0:9b24f296bc0e	210	lcd_data_l = data << 23; //low nibble
nullsub	0:9b24f296bc0e	211	lcd_data_h = data >> 0x04; //high nibble
nullsub	0:9b24f296bc0e	212
nullsub	0:9b24f296bc0e	213	lcd_cs = 0; // LCD_PORT_COM &= ~(1<<LCD_CS);//CS=0;
nullsub	0:9b24f296bc0e	214	lcd_wr = 0; //LCD_PORT_COM &= ~(1<<LCD_WR);//WR=0;
nullsub	0:9b24f296bc0e	215	wait_us(1); //FIXME: look it up in the datasheet!!!
nullsub	0:9b24f296bc0e	216	lcd_wr = 1; //LCD_PORT_COM \|= (1<<LCD_WR);//WR=1;
nullsub	0:9b24f296bc0e	217	lcd_cs = 1; //LCD_PORT_COM \|= (1<<LCD_CS);//CS=1;
nullsub	0:9b24f296bc0e	218	wait_us(1);
nullsub	0:9b24f296bc0e	219	}
nullsub	0:9b24f296bc0e	220
nullsub	0:9b24f296bc0e	221	void resetdisp(void) {
nullsub	0:9b24f296bc0e	222	lcd_reset = 1; // LCD_PORT_COM \|= (1<<LCD_RESET);
nullsub	0:9b24f296bc0e	223	wait_us(1);
nullsub	0:9b24f296bc0e	224	lcd_reset = 0; //LCD_PORT_COM &= ~(1<<LCD_RESET);
nullsub	0:9b24f296bc0e	225	wait_us(1);
nullsub	0:9b24f296bc0e	226	lcd_reset = 1; //LCD_PORT_COM \|= (1<<LCD_RESET);
nullsub	0:9b24f296bc0e	227	wait_us(1);
nullsub	0:9b24f296bc0e	228	}
nullsub	0:9b24f296bc0e	229
nullsub	0:9b24f296bc0e	230
nullsub	0:9b24f296bc0e	231
nullsub	0:9b24f296bc0e	232	#endif

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Type:	Library
Created:	26 Dec 2010
Imports:	22
Forks:	0
Commits:	6
Dependents:	0
Dependencies:	0
Followers:	1

lcd.c@5:70dcbb284628, 2011-01-09 (annotated)

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