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_reg_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 xprintf("page display: %X\n", page);
126 return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
129 msg_t is31_read_register(uint8_t page, uint8_t reg, uint8_t *result) {
130 is31_select_page(page);
133 return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 1, result, 1, US2ST(IS31_TIMEOUT));
136 /* ========================
137 * initialise the IS31 chip
138 * ======================== */
139 void is31_init(void) {
140 // just to be sure that it's all zeroes
141 __builtin_memset(full_page,0,0xB4+1);
142 // zero function page, all registers (assuming full_page is all zeroes)
143 is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
144 // disable hardware shutdown
145 palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
146 palSetPad(GPIOB, 16);
147 chThdSleepMilliseconds(10);
149 is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, 0);
150 chThdSleepMilliseconds(10);
151 // TODO: This already done above, remove?
152 // zero function page, all registers
153 is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
154 chThdSleepMilliseconds(10);
155 // software shutdown disable (i.e. turn stuff on)
156 is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
157 chThdSleepMilliseconds(10);
158 // zero all LED registers on all 8 pages
161 is31_write_data(i, full_page, 0xB4 + 1);
162 chThdSleepMilliseconds(1);
166 /* ==================
168 * ================== */
169 #define LED_MAILBOX_NUM_MSGS 5
170 static msg_t led_mailbox_queue[LED_MAILBOX_NUM_MSGS];
171 mailbox_t led_mailbox;
172 static THD_WORKING_AREA(waLEDthread, 256);
173 static THD_FUNCTION(LEDthread, arg) {
175 chRegSetThreadName("LEDthread");
179 //persistent status variables
180 uint8_t backlight_status, lock_status, led_step, active_layer;
181 uint8_t led_control_reg[0x13] = {0};//led control register start address + 0x12 bytes
184 uint8_t temp, msg_type, msg_led;
187 /* //control register variables
188 uint8_t page, save_page, save_breath1, save_breath2;
192 // initialize persistent variables
193 backlight_status = 0;
194 lock_status = 0;//TODO: does keyboard remember locks?
195 led_step = 4; //full brightness
199 // wait for a message (asynchronous)
200 // (messages are queued (up to LED_MAILBOX_NUM_MSGS) if they can't
201 // be processed right away)
202 chMBFetch(&led_mailbox, &msg, TIME_INFINITE);
203 msg_type = (msg >> 8) & 0xFF; //first byte is msg type
204 msg_led = (msg) & 0xFF; //second byte is action information
206 xprintf("--------------------\n");
207 xprintf("mailbox fetch\nmsg: %X\n", msg);
208 xprintf("type: %X - led: %X\n", msg_type, msg_led); //test if msg_type is 1 or 2 bytes after mask
211 //TODO: lighting key led on keypress
215 //TODO: toggle existing indicator off, or let user do this, but write frame 7 for every led change
216 //turn on single led, msg_led = row/col of led
217 set_led_bit(led_control_reg, msg_led, 1);
219 is31_write_data (7, led_control_reg, 0x12+1);
220 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 7);
222 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
223 xprintf("page display: %X\n", temp);
227 xprintf("TOGGLE_ALL\n");
228 //msg_led = unused, TODO: consider using msg_led to toggle layer display
229 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
231 xprintf("temp: %X\n", temp);
232 //if LED_ALL is on then toggle off, any other layer, turn on LED_ALL
234 xprintf("page display true: %X\n", temp);
235 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 0);
237 xprintf("page display false: %X\n", temp);
238 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 1);
240 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
241 xprintf("page display: %X\n", temp);
244 case TOGGLE_BACKLIGHT:
246 backlight_status ^= 1;
247 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
250 page = backlight_status == 0 ? 0 : active_layer;
251 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, page);
254 case TOGGLE_LAYER_LEDS://show layer indicator or full map of layer keys.
255 //TODO: change so user can flag which they want, indiv or full map in fn_actions
256 //msg_led = layer to toggle on
257 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
259 if(temp == msg_led) {
260 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 7);
263 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, msg_led);
264 active_layer = msg_led;
268 case TOGGLE_LOCK_LED:
269 //msg_led = 0-3 for lock flags
270 lock_status ^= msg_led; //TODO: confirm toggling works and doesn't get out of sync
271 set_lock_leds(led_control_reg, lock_status);
276 case STEP_BRIGHTNESS:
277 //pwm_levels[] bounds checking, loop through array
278 //TODO: find a cleaner way to walk through this logic
293 //TODO: this seems a messy way to populate the pwm register
294 //populate the 9 byte rows to be written to each pin, first byte is register (pin) address
296 pwm_reg_array[i]=pwm_levels[led_step];
299 pwm_reg_array[0] = 0x24 + (i * 0x10);//first byte of 9 bytes must be register address
300 is31_write_data(0, pwm_reg_array, 9);
301 chThdSleepMilliseconds(5);
305 /* case LED_MSG_SLEEP_LED_ON:
306 // save current settings
307 is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &save_page);
308 is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, &save_breath1);
309 is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, &save_breath2);
310 // use pages 7 and 8 for (hardware) breathing (assuming they're empty)
311 is31_write_register(6, BREATHE_LED_ADDRESS, 0xFF);
312 is31_write_register(7, BREATHE_LED_ADDRESS, 0x00);
313 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (6<<4)|6);
314 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
315 retval = MSG_TIMEOUT;
317 while(retval == MSG_TIMEOUT) {
318 // switch to the other page
319 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, temp);
320 temp = (temp == 6 ? 7 : 6);
321 // the times should be sufficiently long for IS31 to finish switching pages
322 retval = chMBFetch(&led_mailbox, &msg, MS2ST(temp == 6 ? 4000 : 6000));
324 // received a message (should be a wakeup), so restore previous state
325 chThdSleepMilliseconds(3000); // need to wait until the page change finishes
326 // note: any other messages are queued
327 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, save_breath1);
328 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, save_breath2);
329 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, save_page);
331 case LED_MSG_SLEEP_LED_OFF:
332 // should not get here; wakeup should be received in the branch above break;
335 //TODO: individual led state unchanged if page arrays are selected in code above
336 //avoidable if full pages are written on the fly
337 //or use pg8 for individual leds, have pointer to currently on led address for toggling
338 if (msg == 0x59 || msg == 0x84) {
339 //toggle lock keys on all layers
341 is31_read_register(0, msg, &temp);
342 pwm = (temp > 0x00 ? 0x00 : 0xFF);
343 is31_write_register(i,msg,pwm);
346 } else if(msg >= 0x24) {
347 xprintf("Power pre-read\ntemp: %X - msg: %X - pwm: %X\n", temp, msg, pwm);
348 is31_read_register(7, msg, &temp);
349 xprintf("Post-read\ntemp: %X - msg: %X - pwm: %X\n", temp, msg, pwm);
350 if (msg == active_led) {
352 pwm = (temp > 0x00 ? 0x00 : 0xFF);
354 //Use 8th led page for individual led indicators
355 is31_write_register(7, msg, pwm);
357 is31_write_register(7, active_led, 0x00);
358 is31_write_register(7, msg, 0xFF);
360 xprintf("Power post-change\ntemp: %X - msg: %X - pwm: %X\n", temp, msg, pwm);
361 is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 7);
366 xprintf("--------------------\n");
371 /* ========================
373 * ======================== */
374 void set_led_bit (uint8_t *led_control_reg, uint8_t msg_led, uint8_t toggle_on) {
375 uint8_t row_byte, column_bit;
376 //msg_led tens column is pin#, A-control register is every other 8 bits
377 //ones column is bit position in 8-bit mask
378 //control register will be one bit shifted into position along register's full 0x12 bytes
379 ////first byte is register address 0x00
380 row_byte = ((msg_led / 10) % 10 - 1 ) * 2 + 1;
381 column_bit = 1<<(msg_led % 10 - 1);
384 led_control_reg[row_byte] |= 1<<(column_bit);
386 led_control_reg[row_byte] &= ~1<<(column_bit);
390 void set_lock_leds(uint8_t *led_control_reg, uint8_t lock_status) {
393 switch (lock_status) {
395 set_led_bit(led_control_reg, CAPS_LOCK_LED_ADDRESS, 1);//TODO: define lock addresses by matrix#, and loop for all frames
396 set_led_bit(led_control_reg, NUM_LOCK_LED_ADDRESS, 0);
399 set_led_bit(led_control_reg, CAPS_LOCK_LED_ADDRESS, 0);
400 set_led_bit(led_control_reg, NUM_LOCK_LED_ADDRESS, 1);
403 set_led_bit(led_control_reg, NUM_LOCK_LED_ADDRESS, 1);
404 set_led_bit(led_control_reg, CAPS_LOCK_LED_ADDRESS, 1);
408 for(i=1; i<8; i++) { //keep LED_OFF layer all off, including locks
409 is31_write_data (i, led_control_reg, 0x12+1);
410 chThdSleepMilliseconds(5);
414 void write_led_page (uint8_t page, const uint8_t *led_array, uint8_t led_count) {
415 //TODO: init function that accepts array of led addresses and sets them by row
418 uint8_t temp_control_reg[0x13] = {0};//led control register start address + 0x12 bytes
419 xprintf("-------------\n");
420 xprintf("write page %X\n", page);
422 for(i=0;i<led_count;i++){
423 row = ((led_array[i] / 10) % 10 - 1 ) * 2 + 1;//includes 1 byte shift for 0x00 address
424 col = 1<<(led_array[i] % 10 - 1);
426 temp_control_reg[row] |= 1<<(col);
429 is31_write_data(page, temp_control_reg, 0x13);
430 xprintf("-------------\n");
432 /* =====================
433 * hook into user keymap
434 * ===================== */
435 void led_controller_init(void) {
440 palSetPadMode(GPIOB, 0, PAL_MODE_ALTERNATIVE_2); // PTB0/I2C0/SCL
441 palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATIVE_2); // PTB1/I2C0/SDA
443 i2cStart(&I2CD1, &i2ccfg);
444 // try high drive (from kiibohd)
445 I2CD1.i2c->C2 |= I2Cx_C2_HDRS;
446 // try glitch fixing (from kiibohd)
449 chThdSleepMilliseconds(10);
451 /* initialise IS31 chip */
454 /* enable LEDs on all pages */
456 __builtin_memcpy(full_page+1, is31_ic60_leds_mask, 0x12);
458 is31_write_data(i, full_page, 1+0x12);
461 //set Display Option Register so all pwm intensity is controlled from Frame 1
462 is31_write_register(IS31_FUNCTIONREG, IS31_REG_DISPLAYOPT, IS31_REG_DISPLAYOPT_INTENSITY_SAME);
464 /* enable breathing when the displayed page changes */
465 // Fade-in Fade-out, time = 26ms * 2^N, N=3
466 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (3<<4)|3);
467 is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
469 // clean up the lock LEDs
470 //TODO: adjust for new addressing and additional frames
471 //is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0);
472 //is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0);
474 /* more time consuming LED processing should be offloaded into
475 * a thread, with asynchronous messaging. */
476 chMBObjectInit(&led_mailbox, led_mailbox_queue, LED_MAILBOX_NUM_MSGS);
477 chThdCreateStatic(waLEDthread, sizeof(waLEDthread), LOWPRIO, LEDthread, NULL);
480 //TODO: Don't know equivalent QMK hooks for these
482 //void hook_usb_suspend_entry(void) {
483 //#ifdef SLEEP_LED_ENABLE
484 // chSysLockFromISR();
485 // chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_ON);
486 // chSysUnlockFromISR();
487 //#endif /* SLEEP_LED_ENABLE */
490 //void hook_usb_suspend_loop(void) {
491 // chThdSleepMilliseconds(100);
492 // /* Remote wakeup */
493 // if((USB_DRIVER.status & 2) && suspend_wakeup_condition()) {
494 // send_remote_wakeup(&USB_DRIVER);
498 //void hook_usb_wakeup(void) {
499 //#ifdef SLEEP_LED_ENABLE
500 // chSysLockFromISR();
501 // chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_OFF);
502 // chSysUnlockFromISR();
503 //#endif /* SLEEP_LED_ENABLE */