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_QMK
23 #define GDISP_SCREEN_HEIGHT LED_HEIGHT
24 #define GDISP_SCREEN_WIDTH LED_WIDTH
26 #include "gdisp_lld_config.h"
27 #include "src/gdisp/gdisp_driver.h"
29 #include "board_is31fl3731c.h"
32 // Can't include led_tables from here
33 extern const uint8_t CIE1931_CURVE[];
35 /*===========================================================================*/
36 /* Driver local definitions. */
37 /*===========================================================================*/
39 #ifndef GDISP_INITIAL_CONTRAST
40 #define GDISP_INITIAL_CONTRAST 0
42 #ifndef GDISP_INITIAL_BACKLIGHT
43 #define GDISP_INITIAL_BACKLIGHT 0
46 #define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
48 #define IS31_ADDR_DEFAULT 0x74
50 #define IS31_REG_CONFIG 0x00
52 #define IS31_REG_CONFIG_PICTUREMODE 0x00
53 #define IS31_REG_CONFIG_AUTOPLAYMODE 0x08
54 #define IS31_REG_CONFIG_AUDIOPLAYMODE 0x18
55 // D2:D0 bits are starting frame for autoplay mode
57 #define IS31_REG_PICTDISP 0x01 // D2:D0 frame select for picture mode
59 #define IS31_REG_AUTOPLAYCTRL1 0x02
60 // D6:D4 number of loops (000=infty)
61 // D2:D0 number of frames to be used
63 #define IS31_REG_AUTOPLAYCTRL2 0x03 // D5:D0 delay time (*11ms)
65 #define IS31_REG_DISPLAYOPT 0x05
66 #define IS31_REG_DISPLAYOPT_INTENSITY_SAME 0x20 // same intensity for all frames
67 #define IS31_REG_DISPLAYOPT_BLINK_ENABLE 0x8
68 // D2:D0 bits blink period time (*0.27s)
70 #define IS31_REG_AUDIOSYNC 0x06
71 #define IS31_REG_AUDIOSYNC_ENABLE 0x1
73 #define IS31_REG_FRAMESTATE 0x07
75 #define IS31_REG_BREATHCTRL1 0x08
76 // D6:D4 fade out time (26ms*2^i)
77 // D2:D0 fade in time (26ms*2^i)
79 #define IS31_REG_BREATHCTRL2 0x09
80 #define IS31_REG_BREATHCTRL2_ENABLE 0x10
81 // D2:D0 extinguish time (3.5ms*2^i)
83 #define IS31_REG_SHUTDOWN 0x0A
84 #define IS31_REG_SHUTDOWN_OFF 0x0
85 #define IS31_REG_SHUTDOWN_ON 0x1
87 #define IS31_REG_AGCCTRL 0x0B
88 #define IS31_REG_ADCRATE 0x0C
90 #define IS31_COMMANDREGISTER 0xFD
91 #define IS31_FUNCTIONREG 0x0B // helpfully called 'page nine'
92 #define IS31_FUNCTIONREG_SIZE 0xD
94 #define IS31_FRAME_SIZE 0xB4
96 #define IS31_PWM_REG 0x24
97 #define IS31_PWM_SIZE 0x90
99 #define IS31_LED_MASK_SIZE 0x12
103 /*===========================================================================*/
104 /* Driver local functions. */
105 /*===========================================================================*/
108 uint8_t write_buffer_offset;
109 uint8_t write_buffer[IS31_FRAME_SIZE];
110 uint8_t frame_buffer[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH];
112 }__attribute__((__packed__)) PrivData;
114 // Some common routines and macros
115 #define PRIV(g) ((PrivData*)g->priv)
117 /*===========================================================================*/
118 /* Driver exported functions. */
119 /*===========================================================================*/
121 static GFXINLINE void write_page(GDisplay* g, uint8_t page) {
122 uint8_t tx[2] __attribute__((aligned(2)));
123 tx[0] = IS31_COMMANDREGISTER;
125 write_data(g, tx, 2);
128 static GFXINLINE void write_register(GDisplay* g, uint8_t page, uint8_t reg, uint8_t data) {
129 uint8_t tx[2] __attribute__((aligned(2)));
133 write_data(g, tx, 2);
136 static GFXINLINE void write_ram(GDisplay *g, uint8_t page, uint16_t offset, uint16_t length) {
137 PRIV(g)->write_buffer_offset = offset;
139 write_data(g, (uint8_t*)PRIV(g), length + 1);
142 LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
143 // The private area is the display surface.
144 g->priv = gfxAlloc(sizeof(PrivData));
145 __builtin_memset(PRIV(g), 0, sizeof(PrivData));
148 // Initialise the board interface
150 gfxSleepMilliseconds(10);
152 // zero function page, all registers (assuming full_page is all zeroes)
153 write_ram(g, IS31_FUNCTIONREG, 0, IS31_FUNCTIONREG_SIZE);
154 set_hardware_shutdown(g, false);
155 gfxSleepMilliseconds(10);
157 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
158 gfxSleepMilliseconds(10);
159 // zero function page, all registers
160 write_ram(g, IS31_FUNCTIONREG, 0, IS31_FUNCTIONREG_SIZE);
161 gfxSleepMilliseconds(10);
164 // zero all LED registers on all 8 pages, and enable the mask
165 __builtin_memcpy(PRIV(g)->write_buffer, get_led_mask(g), IS31_LED_MASK_SIZE);
166 for(uint8_t i=0; i<8; i++) {
167 write_ram(g, i, 0, IS31_FRAME_SIZE);
168 gfxSleepMilliseconds(1);
171 // software shutdown disable (i.e. turn stuff on)
172 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
173 gfxSleepMilliseconds(10);
178 /* Initialise the GDISP structure */
179 g->g.Width = GDISP_SCREEN_WIDTH;
180 g->g.Height = GDISP_SCREEN_HEIGHT;
181 g->g.Orientation = GDISP_ROTATE_0;
182 g->g.Powermode = powerOff;
183 g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
184 g->g.Contrast = GDISP_INITIAL_CONTRAST;
188 #if GDISP_HARDWARE_FLUSH
189 LLDSPEC void gdisp_lld_flush(GDisplay *g) {
190 // Don't flush if we don't need it.
191 if (!(g->flags & GDISP_FLG_NEEDFLUSH))
196 // TODO: some smarter algorithm for this
197 // We should run only one physical page at a time
198 // This way we don't need to send so much data, and
199 // we could use slightly less memory
200 uint8_t* src = PRIV(g)->frame_buffer;
201 for (int y=0;y<GDISP_SCREEN_HEIGHT;y++) {
202 for (int x=0;x<GDISP_SCREEN_WIDTH;x++) {
203 uint8_t val = (uint16_t)*src * g->g.Backlight / 100;
204 PRIV(g)->write_buffer[get_led_address(g, x, y)]=CIE1931_CURVE[val];
208 write_ram(g, PRIV(g)->page, IS31_PWM_REG, IS31_PWM_SIZE);
209 gfxSleepMilliseconds(1);
210 write_register(g, IS31_FUNCTIONREG, IS31_REG_PICTDISP, PRIV(g)->page);
212 g->flags &= ~GDISP_FLG_NEEDFLUSH;
216 #if GDISP_HARDWARE_DRAWPIXEL
217 LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
220 switch(g->g.Orientation) {
226 case GDISP_ROTATE_180:
227 x = GDISP_SCREEN_WIDTH-1 - g->p.x;
231 PRIV(g)->frame_buffer[y * GDISP_SCREEN_WIDTH + x] = gdispColor2Native(g->p.color);
232 g->flags |= GDISP_FLG_NEEDFLUSH;
236 #if GDISP_HARDWARE_PIXELREAD
237 LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) {
240 switch(g->g.Orientation) {
246 case GDISP_ROTATE_180:
247 x = GDISP_SCREEN_WIDTH-1 - g->p.x;
251 return gdispNative2Color(PRIV(g)->frame_buffer[y * GDISP_SCREEN_WIDTH + x]);
255 #if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
256 LLDSPEC void gdisp_lld_control(GDisplay *g) {
258 case GDISP_CONTROL_POWER:
259 if (g->g.Powermode == (powermode_t)g->p.ptr)
261 switch((powermode_t)g->p.ptr) {
265 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
268 write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
273 g->g.Powermode = (powermode_t)g->p.ptr;
276 case GDISP_CONTROL_ORIENTATION:
277 if (g->g.Orientation == (orientation_t)g->p.ptr)
279 switch((orientation_t)g->p.ptr) {
280 /* Rotation is handled by the drawing routines */
282 case GDISP_ROTATE_180:
283 g->g.Height = GDISP_SCREEN_HEIGHT;
284 g->g.Width = GDISP_SCREEN_WIDTH;
286 case GDISP_ROTATE_90:
287 case GDISP_ROTATE_270:
288 g->g.Height = GDISP_SCREEN_WIDTH;
289 g->g.Width = GDISP_SCREEN_HEIGHT;
294 g->g.Orientation = (orientation_t)g->p.ptr;
297 case GDISP_CONTROL_BACKLIGHT:
298 if (g->g.Backlight == (unsigned)g->p.ptr)
300 unsigned val = (unsigned)g->p.ptr;
301 g->g.Backlight = val > 100 ? 100 : val;
302 g->flags |= GDISP_FLG_NEEDFLUSH;
306 #endif // GDISP_NEED_CONTROL
308 #endif // GFX_USE_GDISP