2 Copyright 2016 Fred Sundvik <fsundvik@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #define GDISP_DRIVER_VMT GDISPVMT_IS31FL3731C_WHITEFOX
23 #include "drivers/gdisp/IS31FL3731C/gdisp_lld_config.h"
24 #include "src/gdisp/gdisp_driver.h"
26 #include "board_IS31FL3731C.h"
29 // Can't include led_tables from here
30 extern const uint8_t CIE1931_CURVE[];
32 /*===========================================================================*/
33 /* Driver local definitions. */
34 /*===========================================================================*/
36 #ifndef GDISP_SCREEN_HEIGHT
37 #define GDISP_SCREEN_HEIGHT 9
39 #ifndef GDISP_SCREEN_WIDTH
40 #define GDISP_SCREEN_WIDTH 16
42 #ifndef GDISP_INITIAL_CONTRAST
43 #define GDISP_INITIAL_CONTRAST 0
45 #ifndef GDISP_INITIAL_BACKLIGHT
46 #define GDISP_INITIAL_BACKLIGHT 0
49 #define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
51 #define IS31_ADDR_DEFAULT 0x74
53 #define IS31_REG_CONFIG 0x00
55 #define IS31_REG_CONFIG_PICTUREMODE 0x00
56 #define IS31_REG_CONFIG_AUTOPLAYMODE 0x08
57 #define IS31_REG_CONFIG_AUDIOPLAYMODE 0x18
58 // D2:D0 bits are starting frame for autoplay mode
60 #define IS31_REG_PICTDISP 0x01 // D2:D0 frame select for picture mode
62 #define IS31_REG_AUTOPLAYCTRL1 0x02
63 // D6:D4 number of loops (000=infty)
64 // D2:D0 number of frames to be used
66 #define IS31_REG_AUTOPLAYCTRL2 0x03 // D5:D0 delay time (*11ms)
68 #define IS31_REG_DISPLAYOPT 0x05
69 #define IS31_REG_DISPLAYOPT_INTENSITY_SAME 0x20 // same intensity for all frames
70 #define IS31_REG_DISPLAYOPT_BLINK_ENABLE 0x8
71 // D2:D0 bits blink period time (*0.27s)
73 #define IS31_REG_AUDIOSYNC 0x06
74 #define IS31_REG_AUDIOSYNC_ENABLE 0x1
76 #define IS31_REG_FRAMESTATE 0x07
78 #define IS31_REG_BREATHCTRL1 0x08
79 // D6:D4 fade out time (26ms*2^i)
80 // D2:D0 fade in time (26ms*2^i)
82 #define IS31_REG_BREATHCTRL2 0x09
83 #define IS31_REG_BREATHCTRL2_ENABLE 0x10
84 // D2:D0 extinguish time (3.5ms*2^i)
86 #define IS31_REG_SHUTDOWN 0x0A
87 #define IS31_REG_SHUTDOWN_OFF 0x0
88 #define IS31_REG_SHUTDOWN_ON 0x1
90 #define IS31_REG_AGCCTRL 0x0B
91 #define IS31_REG_ADCRATE 0x0C
93 #define IS31_COMMANDREGISTER 0xFD
94 #define IS31_FUNCTIONREG 0x0B // helpfully called 'page nine'
95 #define IS31_FUNCTIONREG_SIZE 0xD
97 #define IS31_FRAME_SIZE 0xB4
99 #define IS31_PWM_REG 0x24
100 #define IS31_PWM_SIZE 0x90
102 #define IS31_LED_MASK_SIZE 0x12
103 #define IS31_SCREEN_WIDTH 16
107 /*===========================================================================*/
108 /* Driver local functions. */
109 /*===========================================================================*/
112 uint8_t write_buffer_offset;
113 uint8_t write_buffer[IS31_FRAME_SIZE];
114 uint8_t frame_buffer[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH];
116 }__attribute__((__packed__)) PrivData;
118 // Some common routines and macros
119 #define PRIV(g) ((PrivData*)g->priv)
121 /*===========================================================================*/
122 /* Driver exported functions. */
123 /*===========================================================================*/
125 static GFXINLINE void write_page(GDisplay* g, uint8_t page) {
126 uint8_t tx[2] __attribute__((aligned(2)));
127 tx[0] = IS31_COMMANDREGISTER;
129 write_data(g, tx, 2);
132 static GFXINLINE void write_register(GDisplay* g, uint8_t page, uint8_t reg, uint8_t data) {
133 uint8_t tx[2] __attribute__((aligned(2)));
137 write_data(g, tx, 2);
140 static GFXINLINE void write_ram(GDisplay *g, uint8_t page, uint16_t offset, uint16_t length) {
141 PRIV(g)->write_buffer_offset = offset;
143 write_data(g, (uint8_t*)PRIV(g), length + 1);
146 LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
147 // The private area is the display surface.
148 g->priv = gfxAlloc(sizeof(PrivData));
149 __builtin_memset(PRIV(g), 0, sizeof(PrivData));
152 // Initialise the board interface
154 gfxSleepMilliseconds(10);
156 // zero function page, all registers (assuming full_page is all zeroes)
157 write_ram(g, IS31_FUNCTIONREG, 0, IS31_FUNCTIONREG_SIZE);
158 set_hardware_shutdown(g, false);
159 gfxSleepMilliseconds(10);
161 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
162 gfxSleepMilliseconds(10);
163 // zero function page, all registers
164 write_ram(g, IS31_FUNCTIONREG, 0, IS31_FUNCTIONREG_SIZE);
165 gfxSleepMilliseconds(10);
168 // zero all LED registers on all 8 pages, and enable the mask
169 __builtin_memcpy(PRIV(g)->write_buffer, get_led_mask(g), IS31_LED_MASK_SIZE);
170 for(uint8_t i=0; i<8; i++) {
171 write_ram(g, i, 0, IS31_FRAME_SIZE);
172 gfxSleepMilliseconds(1);
175 // software shutdown disable (i.e. turn stuff on)
176 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
177 gfxSleepMilliseconds(10);
182 /* Initialise the GDISP structure */
183 g->g.Width = GDISP_SCREEN_WIDTH;
184 g->g.Height = GDISP_SCREEN_HEIGHT;
185 g->g.Orientation = GDISP_ROTATE_0;
186 g->g.Powermode = powerOff;
187 g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
188 g->g.Contrast = GDISP_INITIAL_CONTRAST;
192 #if GDISP_HARDWARE_FLUSH
193 LLDSPEC void gdisp_lld_flush(GDisplay *g) {
194 // Don't flush if we don't need it.
195 if (!(g->flags & GDISP_FLG_NEEDFLUSH))
200 // TODO: some smarter algorithm for this
201 // We should run only one physical page at a time
202 // This way we don't need to send so much data, and
203 // we could use slightly less memory
204 uint8_t* src = PRIV(g)->frame_buffer;
205 for (int y=0;y<GDISP_SCREEN_HEIGHT;y++) {
206 for (int x=0;x<GDISP_SCREEN_WIDTH;x++) {
207 uint8_t val = (uint16_t)*src * g->g.Backlight / 100;
208 PRIV(g)->write_buffer[get_led_address(g, x, y)]=CIE1931_CURVE[val];
212 write_ram(g, PRIV(g)->page, IS31_PWM_REG, IS31_PWM_SIZE);
213 gfxSleepMilliseconds(1);
214 write_register(g, IS31_FUNCTIONREG, IS31_REG_PICTDISP, PRIV(g)->page);
216 g->flags &= ~GDISP_FLG_NEEDFLUSH;
220 #if GDISP_HARDWARE_DRAWPIXEL
221 LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
224 switch(g->g.Orientation) {
230 case GDISP_ROTATE_180:
231 x = GDISP_SCREEN_WIDTH-1 - g->p.x;
235 PRIV(g)->frame_buffer[y * GDISP_SCREEN_WIDTH + x] = gdispColor2Native(g->p.color);
236 g->flags |= GDISP_FLG_NEEDFLUSH;
240 #if GDISP_HARDWARE_PIXELREAD
241 LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) {
244 switch(g->g.Orientation) {
250 case GDISP_ROTATE_180:
251 x = GDISP_SCREEN_WIDTH-1 - g->p.x;
255 return gdispNative2Color(PRIV(g)->frame_buffer[y * GDISP_SCREEN_WIDTH + x]);
259 #if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
260 LLDSPEC void gdisp_lld_control(GDisplay *g) {
262 case GDISP_CONTROL_POWER:
263 if (g->g.Powermode == (powermode_t)g->p.ptr)
265 switch((powermode_t)g->p.ptr) {
269 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
272 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
277 g->g.Powermode = (powermode_t)g->p.ptr;
280 case GDISP_CONTROL_ORIENTATION:
281 if (g->g.Orientation == (orientation_t)g->p.ptr)
283 switch((orientation_t)g->p.ptr) {
284 /* Rotation is handled by the drawing routines */
286 case GDISP_ROTATE_180:
287 g->g.Height = GDISP_SCREEN_HEIGHT;
288 g->g.Width = GDISP_SCREEN_WIDTH;
290 case GDISP_ROTATE_90:
291 case GDISP_ROTATE_270:
292 g->g.Height = GDISP_SCREEN_WIDTH;
293 g->g.Width = GDISP_SCREEN_HEIGHT;
298 g->g.Orientation = (orientation_t)g->p.ptr;
301 case GDISP_CONTROL_BACKLIGHT:
302 if (g->g.Backlight == (unsigned)g->p.ptr)
304 unsigned val = (unsigned)g->p.ptr;
305 g->g.Backlight = val > 100 ? 100 : val;
306 g->flags |= GDISP_FLG_NEEDFLUSH;
310 #endif // GDISP_NEED_CONTROL
312 #endif // GFX_USE_GDISP