aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gdisp/ILI9320/gdisp_lld_ILI9320.c
blob: 96b12cfd69115790ce1f01692389fd147a4a1b6f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
/*
 * This file is subject to the terms of the GFX License. If a copy of
 * the license was not distributed with this file, you can obtain one at:
 *
 *              http://ugfx.org/license.html
 */

#include "gfx.h"

#if GFX_USE_GDISP

/* This controller is only ever used with a 240 x 320 display */
#if defined(GDISP_SCREEN_HEIGHT) || defined(GDISP_SCREEN_HEIGHT)
	#if GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_DIRECT
		#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
	#elif GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_MACRO
		COMPILER_WARNING("GDISP: This low level driver does not support setting a screen size. It is being ignored.")
	#endif
	#undef GDISP_SCREEN_WIDTH
	#undef GDISP_SCREEN_HEIGHT
#endif

#define GDISP_DRIVER_VMT			GDISPVMT_ILI9320
#include "gdisp_lld_config.h"
#include "../../../src/gdisp/gdisp_driver.h"

#include "board_ILI9320.h"

/*===========================================================================*/
/* Driver local definitions.                                                 */
/*===========================================================================*/

#ifndef GDISP_SCREEN_HEIGHT
	#define GDISP_SCREEN_HEIGHT		320
#endif
#ifndef GDISP_SCREEN_WIDTH
	#define GDISP_SCREEN_WIDTH		240
#endif
#ifndef GDISP_INITIAL_CONTRAST
	#define GDISP_INITIAL_CONTRAST	50
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
	#define GDISP_INITIAL_BACKLIGHT	100
#endif

/*===========================================================================*/
/* Driver local variables.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver local functions.                                                   */
/*===========================================================================*/

#define dummy_read(g)				{ volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
#define write_reg(g, reg, data)		{ write_index(g, reg); write_data(g, data); }

static void set_cursor(GDisplay *g) {
	switch(g->g.Orientation) {
		default:
		case GDISP_ROTATE_0:
		case GDISP_ROTATE_180:
			write_reg(g, 0x20, g->p.x);
			write_reg(g, 0x21, g->p.y);
			break;

		case GDISP_ROTATE_90:
		case GDISP_ROTATE_270:
			write_reg(g, 0x20, g->p.y);
			write_reg(g, 0x21, g->p.x);
			break;
	}
	write_index(g, 0x22);
}

static void set_viewport(GDisplay *g) {
	switch(g->g.Orientation) {
		default:
		case GDISP_ROTATE_0:
		case GDISP_ROTATE_180:
			write_reg(g, 0x50, g->p.x);
			write_reg(g, 0x51, g->p.x + g->p.cx - 1);
			write_reg(g, 0x52, g->p.y);
			write_reg(g, 0x53, g->p.y + g->p.cy - 1);
			break;

		case GDISP_ROTATE_90:
		case GDISP_ROTATE_270:
			write_reg(g, 0x50, g->p.y);
			write_reg(g, 0x51, g->p.y + g->p.cy - 1);
			write_reg(g, 0x52, g->p.x);
			write_reg(g, 0x53, g->p.x + g->p.cx - 1);
			break;
	}
}

LLDSPEC gBool gdisp_lld_init(GDisplay *g) {
	uint16_t cver;

	// No private area for this controller
	g->priv = 0;

	// Initialise the board interface
	init_board(g);

	/* Hardware reset */
	setpin_reset(g, gTrue);
	gfxSleepMicroseconds(1000);
	setpin_reset(g, gFalse);
	gfxSleepMicroseconds(1000);

	acquire_bus(g);
	write_index(g, 0);				// Get controller version
	setreadmode(g);
	dummy_read(g);
    cver = read_data(g);
	setwritemode(g);
    write_reg(g, 0x00, 0x0001); //start Int. osc
    gfxSleepMicroseconds(500);
    write_reg(g, 0x01, 0x0100); //Set SS bit (shift direction of outputs is from S720 to S1)
    write_reg(g, 0x02, 0x0700); //select  the line inversion
    write_reg(g, 0x03, 0x1038); //Entry mode(Horizontal : increment,Vertical : increment, AM=1)
    write_reg(g, 0x04, 0x0000); //Resize control(No resizing)
    write_reg(g, 0x08, 0x0202); //front and back porch 2 lines
    write_reg(g, 0x09, 0x0000); //select normal scan
    write_reg(g, 0x0A, 0x0000); //display control 4
    write_reg(g, 0x0C, 0x0000); //system interface(2 transfer /pixel), internal sys clock,
    write_reg(g, 0x0D, 0x0000); //Frame marker position
    write_reg(g, 0x0F, 0x0000); //selects clk, enable and sync signal polarity,
    write_reg(g, 0x10, 0x0000); //
    write_reg(g, 0x11, 0x0000); //power control 2 reference voltages = 1:1,
    write_reg(g, 0x12, 0x0000); //power control 3 VRH
    write_reg(g, 0x13, 0x0000); //power control 4 VCOM amplitude
    gfxSleepMicroseconds(500);
    write_reg(g, 0x10, 0x17B0); //power control 1 BT,AP
    write_reg(g, 0x11, 0x0137); //power control 2 DC,VC
    gfxSleepMicroseconds(500);
    write_reg(g, 0x12, 0x0139); //power control 3 VRH
    gfxSleepMicroseconds(500);
    write_reg(g, 0x13, 0x1d00); //power control 4 vcom amplitude
    write_reg(g, 0x29, 0x0011); //power control 7 VCOMH
    gfxSleepMicroseconds(500);
    write_reg(g, 0x30, 0x0007);
    write_reg(g, 0x31, 0x0403);
    write_reg(g, 0x32, 0x0404);
    write_reg(g, 0x35, 0x0002);
    write_reg(g, 0x36, 0x0707);
    write_reg(g, 0x37, 0x0606);
    write_reg(g, 0x38, 0x0106);
    write_reg(g, 0x39, 0x0007);
    write_reg(g, 0x3c, 0x0700);
    write_reg(g, 0x3d, 0x0707);
    write_reg(g, 0x20, 0x0000); //starting Horizontal GRAM Address
    write_reg(g, 0x21, 0x0000); //starting Vertical GRAM Address
    write_reg(g, 0x50, 0x0000); //Horizontal GRAM Start Position
    write_reg(g, 0x51, 0x00EF); //Horizontal GRAM end Position
    write_reg(g, 0x52, 0x0000); //Vertical GRAM Start Position
    write_reg(g, 0x53, 0x013F); //Vertical GRAM end Position
	switch (cver) {
		case 0x9320:
        	write_reg(g, 0x60, 0x2700); //starts scanning from G1, and 320 drive lines
        	break;
      	case 0x9325:
     		write_reg(g, 0x60, 0xA700); //starts scanning from G1, and 320 drive lines
			break;
	}

    write_reg(g, 0x61, 0x0001); //fixed base display
    write_reg(g, 0x6a, 0x0000); //no scroll
    write_reg(g, 0x90, 0x0010); //set Clocks/Line =16, Internal Operation Clock Frequency=fosc/1,
    write_reg(g, 0x92, 0x0000); //set gate output non-overlap period=0
    write_reg(g, 0x93, 0x0003); //set Source Output Position=3
    write_reg(g, 0x95, 0x0110); //RGB interface(Clocks per line period=16 clocks)
    write_reg(g, 0x97, 0x0110); //set Gate Non-overlap Period 0 locksc
    write_reg(g, 0x98, 0x0110); //
    write_reg(g, 0x07, 0x0173); //display On

    // Finish Init
    post_init_board(g);

  	// Release the bus
 	release_bus(g);

	// Turn on the backlight
	set_backlight(g, GDISP_INITIAL_BACKLIGHT);
	
    /* Initialise the GDISP structure */
    g->g.Width = GDISP_SCREEN_WIDTH;
    g->g.Height = GDISP_SCREEN_HEIGHT;
    g->g.Orientation = GDISP_ROTATE_0;
    g->g.Powermode = gPowerOn;
    g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
    g->g.Contrast = GDISP_INITIAL_CONTRAST;
	return gTrue;
}

#if GDISP_HARDWARE_STREAM_WRITE
	LLDSPEC	void gdisp_lld_write_start(GDisplay *g) {
		acquire_bus(g);
		set_viewport(g);
		#if !GDISP_HARDWARE_STREAM_POS
			set_cursor(g);
		#endif
	}
	LLDSPEC	void gdisp_lld_write_color(GDisplay *g) {
		write_data(g, gdispColor2Native(g->p.color));
	}
	LLDSPEC	void gdisp_lld_write_stop(GDisplay *g) {
		release_bus(g);
	}
	#if GDISP_HARDWARE_STREAM_POS
		LLDSPEC void gdisp_lld_write_pos(GDisplay *g) {
			set_cursor(g);
		}
	#endif
#endif

#if GDISP_HARDWARE_STREAM_READ
	LLDSPEC	void gdisp_lld_read_start(GDisplay *g) {
		acquire_bus(g);
		set_viewport(g);
		set_cursor(g);
		setreadmode(g);
		dummy_read(g);
	}
	LLDSPEC	gColor gdisp_lld_read_color(GDisplay *g) {
		uint16_t	data;

		data = read_data(g);
		return gdispNative2Color(data);
	}
	LLDSPEC	void gdisp_lld_read_stop(GDisplay *g) {
		setwritemode(g);
		release_bus(g);
	}
#endif

#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
	LLDSPEC void gdisp_lld_control(GDisplay *g) {
		switch(g->p.x) {
		case GDISP_CONTROL_POWER:
			if (g->g.Powermode == (gPowermode)g->p.ptr)
				return;
			switch((gPowermode)g->p.ptr) {
				case gPowerOff:
					acquire_bus(g);
					write_reg(g, 0x07, 0x0000);
					write_reg(g, 0x10, 0x0000);
					write_reg(g, 0x11, 0x0000);
					write_reg(g, 0x12, 0x0000);
					write_reg(g, 0x13, 0x0000);
					release_bus(g);

					set_backlight(g, 0);
					break;

				case gPowerOn:
					//*************Power On sequence ******************//
					acquire_bus(g);
					write_reg(g, 0x10, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
					write_reg(g, 0x11, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
					write_reg(g, 0x12, 0x0000); /* VREG1OUT voltage */
					write_reg(g, 0x13, 0x0000); /* VDV[4:0] for VCOM amplitude */
					gfxSleepMicroseconds(2000);            /* Dis-charge capacitor power voltage */
					write_reg(g, 0x10, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
					write_reg(g, 0x11, 0x0147); /* DC1[2:0], DC0[2:0], VC[2:0] */
					gfxSleepMicroseconds(500);
					write_reg(g, 0x12, 0x013C); /* VREG1OUT voltage */
					gfxSleepMicroseconds(500);
					write_reg(g, 0x13, 0x0E00); /* VDV[4:0] for VCOM amplitude */
					write_reg(g, 0x29, 0x0009); /* VCM[4:0] for VCOMH */
					gfxSleepMicroseconds(500);
					write_reg(g, 0x07, 0x0173); /* 262K color and display ON */
					release_bus(g);

					set_backlight(g, g->g.Backlight);
					break;

				case gPowerSleep:
					acquire_bus(g);
					write_reg(g, 0x07, 0x0000); /* display OFF */
					write_reg(g, 0x10, 0x0000); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
					write_reg(g, 0x11, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
					write_reg(g, 0x12, 0x0000); /* VREG1OUT voltage */
					write_reg(g, 0x13, 0x0000); /* VDV[4:0] for VCOM amplitude */
					gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */
					write_reg(g, 0x10, 0x0002); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
					release_bus(g);

					set_backlight(g, 0);
					break;

				case gPowerDeepSleep:
					acquire_bus(g);
					write_reg(g, 0x07, 0x0000); /* display OFF */
					write_reg(g, 0x10, 0x0000); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
					write_reg(g, 0x11, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
					write_reg(g, 0x12, 0x0000); /* VREG1OUT voltage */
					write_reg(g, 0x13, 0x0000); /* VDV[4:0] for VCOM amplitude */
					gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */
					write_reg(g, 0x10, 0x0004); /* SAP, BT[3:0], APE, AP, DSTB, SLP */
					release_bus(g);

					set_backlight(g, 0);
					break;

				default:
					return;
				}
				g->g.Powermode = (gPowermode)g->p.ptr;
				return;

			case GDISP_CONTROL_ORIENTATION:
				if (g->g.Orientation == (orientation_t)g->p.ptr)
					return;
				switch((orientation_t)g->p.ptr) {
				case GDISP_ROTATE_0:
					acquire_bus(g);
					write_reg(g, 0x01, 0x0100);
					write_reg(g, 0x03, 0x1038);
					write_reg(g, 0x60, 0x2700);
					release_bus(g);

					g->g.Height = GDISP_SCREEN_HEIGHT;
					g->g.Width = GDISP_SCREEN_WIDTH;
					break;

				case GDISP_ROTATE_90:
					acquire_bus(g);
					write_reg(g, 0x01, 0x0000);
					write_reg(g, 0x03, 0x1030);
					write_reg(g, 0x60, 0x2700);
					release_bus(g);

					g->g.Height = GDISP_SCREEN_WIDTH;
					g->g.Width = GDISP_SCREEN_HEIGHT;
					break;

				case GDISP_ROTATE_180:
					acquire_bus(g);
					write_reg(g, 0x01, 0x0000);
					write_reg(g, 0x03, 0x1030);
					write_reg(g, 0x60, 0x2700);
					release_bus(g);

					g->g.Height = GDISP_SCREEN_HEIGHT;
					g->g.Width = GDISP_SCREEN_WIDTH;
					break;

				case GDISP_ROTATE_270:
					acquire_bus(g);
					write_reg(g, 0x01, 0x0100);
					write_reg(g, 0x03, 0x1038);
					write_reg(g, 0x60, 0xA700);
					release_bus(g);

					g->g.Height = GDISP_SCREEN_WIDTH;
					g->g.Width = GDISP_SCREEN_HEIGHT;
					break;
		
				default:
					return;
				}
				g->g.Orientation = (orientation_t)g->p.ptr;
				return;

	        case GDISP_CONTROL_BACKLIGHT:
	            if ((unsigned)g->p.ptr > 100)
	            	g->p.ptr = (void *)100;
	            set_backlight(g, (unsigned)g->p.ptr);
	            g->g.Backlight = (unsigned)g->p.ptr;
	            return;
			default:
				return;
		}
	}
#endif

#endif /* GFX_USE_GDISP */