2 Copyright 2016 flabbergast <s3+flabbergast@sdfeu.org>
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/>.
20 * WF uses IS31FL3731C matrix LED driver from ISSI
21 * datasheet: http://www.issi.com/WW/pdf/31FL3731C.pdf
28 #include "led_controller.h"
35 - digits mean "row" and "col", i.e. 45 means C4-5 in the IS31 datasheet, matrix A
37 11 12 13 14 15 16 17 18 21 22 23 24 25 26 27*
38 28 31 32 33 34 35 36 37 38 41 42 43 44 45
39 46 47 48 51 52 53 54 55 56 57 58 61 62
40 63 64 65 66 67 68 71 72 73 74 75 76 77*
41 78 81 82 83 84 85 86 87
43 *Unused in Alphabet Layout
47 each page has 0xB4 bytes
48 0 - 0x11: LED control (on/off):
49 order: CA1, CB1, CA2, CB2, .... (CA - matrix A, CB - matrix B)
50 CAn controls Cn-8 .. Cn-1 (LSbit)
51 0x12 - 0x23: blink control (like "LED control")
52 0x24 - 0xB3: PWM control: byte per LED, 0xFF max on
53 order same as above (CA 1st row (8bytes), CB 1st row (8bytes), ...)
56 /* Which LED should be used for CAPS LOCK indicator
57 * The usual Caps Lock position is C4-6, so the address is
58 * 0x24 + (4-1)*0x10 + (8-1) = 0x59 */
59 #if !defined(CAPS_LOCK_LED_ADDRESS)
60 #define CAPS_LOCK_LED_ADDRESS 0x46
63 #if !defined(NUM_LOCK_LED_ADDRESS)
64 #define NUM_LOCK_LED_ADDRESS 0x85
67 /* Which LED should breathe during sleep */
68 #if !defined(BREATHE_LED_ADDRESS)
69 #define BREATHE_LED_ADDRESS CAPS_LOCK_LED_ADDRESS
74 * ================= */
75 static const I2CConfig i2ccfg = {
76 400000 // clock speed (Hz); 400kHz max for IS31
82 // internal communication buffers
83 uint8_t tx[2] __attribute__((aligned(2)));
84 uint8_t rx[1] __attribute__((aligned(2)));
86 // buffer for sending the whole page at once (used also as a temp buffer)
87 uint8_t full_page[0xB4+1] = {0};
89 // LED mask (which LEDs are present, selected by bits)
90 // See page comment above, control alternates CA matrix/CB matrix
91 // IC60 pcb uses only CA matrix.
92 // Each byte is a control pin for 8 leds ordered 8-1
93 const uint8_t is31_ic60_leds_mask[0x12] = {
94 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF,
95 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x7F, 0x00, 0x00, 0x00
98 // array to hold brightness pwm steps
99 const uint8_t pwm_levels[5] = {
100 0x00, 0x16, 0x4E, 0xA1, 0xFF
103 // array to write to pwm register
104 uint8_t pwm_register_array[9] = {0};
107 /* ============================
108 * communication functions
109 * ============================ */
110 msg_t is31_select_page(uint8_t page) {
111 tx[0] = IS31_COMMANDREGISTER;
113 return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
116 msg_t is31_write_data(uint8_t page, uint8_t *buffer, uint8_t size) {
117 is31_select_page(page);
118 return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, buffer, size, NULL, 0, US2ST(IS31_TIMEOUT));
121 msg_t is31_write_register(uint8_t page, uint8_t reg, uint8_t data) {
122 is31_select_page(page);
125 return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
128 msg_t is31_read_register(uint8_t page, uint8_t reg, uint8_t *result) {
129 is31_select_page(page);
132 return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 1, result, 1, US2ST(IS31_TIMEOUT));
135 /* ========================
136 * initialise the IS31 chip
137 * ======================== */
138 void is31_init(void) {
139 // just to be sure that it's all zeroes
140 __builtin_memset(full_page,0,0xB4+1);
141 // zero function page, all registers (assuming full_page is all zeroes)
142 is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
143 // disable hardware shutdown
144 palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
145 palSetPad(GPIOB, 16);
146 chThdSleepMilliseconds(10);
148 is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, 0);
149 chThdSleepMilliseconds(10);
150 // software shutdown disable (i.e. turn stuff on)
151 is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
152 chThdSleepMilliseconds(10);
153 // zero all LED registers on all 8 pages
156 is31_write_data(i, full_page, 0xB4 + 1);
157 chThdSleepMilliseconds(1);
161 /* ==================
163 * ================== */
164 #define LED_MAILBOX_NUM_MSGS 5
165 static msg_t led_mailbox_queue[LED_MAILBOX_NUM_MSGS];
166 mailbox_t led_mailbox;
167 static THD_WORKING_AREA(waLEDthread, 256);
168 static THD_FUNCTION(LEDthread, arg) {
170 chRegSetThreadName("LEDthread");
174 //persistent status variables
175 uint8_t backlight_status, lock_status, led_step_status, layer_status;
176 uint8_t led_control_reg[0x13] = {0};//led control register start address + 0x12 bytes
179 uint8_t temp, msg_type, msg_led;
182 /* //control register variables
183 uint8_t page, save_page, save_breath1, save_breath2;
187 // initialize persistent variables
188 backlight_status = 0;
189 lock_status = 0;//TODO: does keyboard remember locks?
190 led_step_status = 4; //full brightness
194 // wait for a message (asynchronous)
195 // (messages are queued (up to LED_MAILBOX_NUM_MSGS) if they can't
196 // be processed right away)
197 chMBFetch(&led_mailbox, &msg, TIME_INFINITE);
198 msg_type = (msg >> 8) & 0xFF; //first byte is msg type
199 msg_led = (msg) & 0xFF; //second byte is action information
201 xprintf("--------------------\n");
202 xprintf("mailbox fetch\nmsg: %X\n", msg);
203 xprintf("type: %X - led: %X\n", msg_type, msg_led); //test if msg_type is 1 or 2 bytes after mask
206 //TODO: lighting key led on keypress
210 //TODO: toggle existing indicator off, or let user do this, but write frame 7 for every led change
211 //turn on single led, msg_led = row/col of led
212 xprintf("TOGGLE_LED\n");
213 set_led_bit(led_control_reg, msg_led, 1);
215 is31_write_data (7, led_control_reg, 0x12+1);
216 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 7);
218 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
222 xprintf("TOGGLE_ALL\n");
223 //msg_led = unused, TODO: consider using msg_led to toggle layer display
224 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
226 //if LED_ALL is on then toggle off, any other layer, turn on LED_ALL
228 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 0);
230 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 1);
232 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
235 case TOGGLE_BACKLIGHT:
237 //TODO: consider Frame 0 as on/off layer and toggle led control register here
238 xprintf("TOGGLE_BACKLIGHT\n");
239 backlight_status ^= 1;
240 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
243 page = backlight_status == 0 ? 0 : layer_status;
244 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, page);
247 case TOGGLE_LAYER_LEDS://show layer indicator or full map of layer keys.
248 //TODO: change so user can flag which they want, indiv or full map in fn_actions
249 //msg_led = layer to toggle on
250 xprintf("TOGGLE_LAYER_LEDS\n");
251 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
253 if(temp == msg_led) {
254 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 7);
257 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, msg_led);
258 layer_status = msg_led;
262 case TOGGLE_LOCK_LED:
263 //msg_led = 0-3 for lock flags
264 lock_status ^= msg_led; //TODO: confirm toggling works and doesn't get out of sync
265 set_lock_leds(led_control_reg, lock_status);
270 case STEP_BRIGHTNESS:
271 //pwm_levels[] bounds checking, loop through array
272 //TODO: find a cleaner way to walk through this logic
273 if (msg_led == 0 && led_step_status == 0) {
279 if (msg_led == 1 && led_step_status == 4) {
285 //TODO: this seems a messy way to populate the pwm register
286 //mimic whitefox init which uses memcpy
287 //populate the 9 byte rows to be written to each pin, first byte is register (pin) address
289 pwm_register_array[i]=pwm_levels[led_step_status];
292 pwm_register_array[0] = 0x24 + (i * 0x10);//first byte of 9 bytes must be register address
293 is31_write_data(0, pwm_register_array, 9);//first page controls pwm in all pages (init Display Option register)
297 /* case LED_MSG_SLEEP_LED_ON:
298 // save current settings
299 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &save_page);
300 is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, &save_breath1);
301 is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, &save_breath2);
302 // use pages 7 and 8 for (hardware) breathing (assuming they're empty)
303 is31_write_register(6, BREATHE_LED_ADDRESS, 0xFF);
304 is31_write_register(7, BREATHE_LED_ADDRESS, 0x00);
305 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (6<<4)|6);
306 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
307 retval = MSG_TIMEOUT;
309 while(retval == MSG_TIMEOUT) {
310 // switch to the other page
311 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, temp);
312 temp = (temp == 6 ? 7 : 6);
313 // the times should be sufficiently long for IS31 to finish switching pages
314 retval = chMBFetch(&led_mailbox, &msg, MS2ST(temp == 6 ? 4000 : 6000));
316 // received a message (should be a wakeup), so restore previous state
317 chThdSleepMilliseconds(3000); // need to wait until the page change finishes
318 // note: any other messages are queued
319 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, save_breath1);
320 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, save_breath2);
321 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, save_page);
323 case LED_MSG_SLEEP_LED_OFF:
324 // should not get here; wakeup should be received in the branch above break;
328 xprintf("--------------------\n");
333 /* ========================
335 * ======================== */
336 void set_led_bit (uint8_t *led_control_reg, uint8_t msg_led, uint8_t toggle_on) {
337 uint8_t row_byte, column_bit;
338 //msg_led tens column is pin#, A-control register is every other 8 bits
339 //ones column is bit position in 8-bit mask
340 //control register will be one bit shifted into position along register's full 0x12 bytes
341 ////first byte is register address 0x00
342 row_byte = ((msg_led / 10) % 10 - 1 ) * 2 + 1;
343 column_bit = 1<<(msg_led % 10 - 1);
346 led_control_reg[row_byte] |= 1<<(column_bit);
348 led_control_reg[row_byte] &= ~1<<(column_bit);
352 void set_lock_leds(uint8_t *led_control_reg, uint8_t lock_status) {
355 switch (lock_status) {
357 set_led_bit(led_control_reg, CAPS_LOCK_LED_ADDRESS, 1);
358 set_led_bit(led_control_reg, NUM_LOCK_LED_ADDRESS, 0);
361 set_led_bit(led_control_reg, CAPS_LOCK_LED_ADDRESS, 0);
362 set_led_bit(led_control_reg, NUM_LOCK_LED_ADDRESS, 1);
365 set_led_bit(led_control_reg, NUM_LOCK_LED_ADDRESS, 1);
366 set_led_bit(led_control_reg, CAPS_LOCK_LED_ADDRESS, 1);
370 for(i=BACKLIGHT_OFF_LOCK_LED_OFF; i<8; i++) { //set in led_controller.h
371 is31_write_data (i, led_control_reg, 0x12+1);
375 void write_led_page (uint8_t page, const uint8_t *led_array, uint8_t led_count) {
376 //TODO: init function that accepts array of led addresses and sets them by row
379 uint8_t temp_control_reg[0x13] = {0};//led control register start address + 0x12 bytes
381 for(i=0;i<led_count;i++){
382 row = ((led_array[i] / 10) % 10 - 1 ) * 2 + 1;//includes 1 byte shift for led register 0x00 address
383 col = led_array[i] % 10 - 1;
385 temp_control_reg[row] |= 1<<(col);
388 is31_write_data(page, temp_control_reg, 0x13);
390 /* =====================
391 * hook into user keymap
392 * ===================== */
393 void led_controller_init(void) {
398 palSetPadMode(GPIOB, 0, PAL_MODE_ALTERNATIVE_2); // PTB0/I2C0/SCL
399 palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATIVE_2); // PTB1/I2C0/SDA
401 i2cStart(&I2CD1, &i2ccfg);
402 // try high drive (from kiibohd)
403 I2CD1.i2c->C2 |= I2Cx_C2_HDRS;
404 // try glitch fixing (from kiibohd)
407 chThdSleepMilliseconds(10);
409 /* initialise IS31 chip */
412 //set Display Option Register so all pwm intensity is controlled from Frame 1
413 is31_write_register(IS31_FUNCTIONREG, IS31_REG_DISPLAYOPT, IS31_REG_DISPLAYOPT_INTENSITY_SAME);
415 /* set full pwm on Frame 1 */
417 pwm_register_array[i]=0xFF;
420 pwm_register_array[0] = 0x24 + (i * 0x10);//first byte of 9 bytes must be register address
421 is31_write_data(0, pwm_register_array, 9);
422 chThdSleepMilliseconds(5);
425 //set all led bits on for Frame 2 LEDS_ALL
427 __builtin_memcpy(full_page+1, is31_ic60_leds_mask, 0x12);
428 is31_write_data(1, full_page, 1+0x12);
430 /* enable breathing when the displayed page changes */
431 // Fade-in Fade-out, time = 26ms * 2^N, N=3
432 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (3<<4)|3);
433 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
435 // clean up the lock LEDs
436 //TODO: adjust for new addressing and additional frames
437 //is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0);
438 //is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0);
440 /* more time consuming LED processing should be offloaded into
441 * a thread, with asynchronous messaging. */
442 chMBObjectInit(&led_mailbox, led_mailbox_queue, LED_MAILBOX_NUM_MSGS);
443 chThdCreateStatic(waLEDthread, sizeof(waLEDthread), LOWPRIO, LEDthread, NULL);
446 //TODO: Don't know equivalent QMK hooks for these
448 //void hook_usb_suspend_entry(void) {
449 //#ifdef SLEEP_LED_ENABLE
450 // chSysLockFromISR();
451 // chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_ON);
452 // chSysUnlockFromISR();
453 //#endif /* SLEEP_LED_ENABLE */
456 //void hook_usb_suspend_loop(void) {
457 // chThdSleepMilliseconds(100);
458 // /* Remote wakeup */
459 // if((USB_DRIVER.status & 2) && suspend_wakeup_condition()) {
460 // send_remote_wakeup(&USB_DRIVER);
464 //void hook_usb_wakeup(void) {
465 //#ifdef SLEEP_LED_ENABLE
466 // chSysLockFromISR();
467 // chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_OFF);
468 // chSysUnlockFromISR();
469 //#endif /* SLEEP_LED_ENABLE */