312 lines
10 KiB
C
312 lines
10 KiB
C
/*
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Copyright 2016 flabbergast <s3+flabbergast@sdfeu.org>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* LED controller code
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* WF uses IS31FL3731C matrix LED driver from ISSI
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* datasheet: http://www.issi.com/WW/pdf/31FL3731C.pdf
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*/
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#include "ch.h"
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#include "hal.h"
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#include "print.h"
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#include "led_controller.h"
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#include "suspend.h"
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#include "usb_main.h"
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/* Infinity60 LED MAP
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- digits mean "row" and "col", i.e. 45 means C4-5 in the IS31 datasheet, matrix A
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11 12 13 14 15 16 17 18 21 22 23 24 25 26 27*
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28 31 32 33 34 35 36 37 38 41 42 43 44 45
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46 47 48 51 52 53 54 55 56 57 58 61 62
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63 64 65 66 67 68 71 72 73 74 75 76 77*
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78 81 82 83 84 85 86 87
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*Unused in Alphabet Layout
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*/
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/*
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each page has 0xB4 bytes
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0 - 0x11: LED control (on/off):
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order: CA1, CB1, CA2, CB2, .... (CA - matrix A, CB - matrix B)
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CAn controls Cn-8 .. Cn-1 (LSbit)
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0x12 - 0x23: blink control (like "LED control")
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0x24 - 0xB3: PWM control: byte per LED, 0xFF max on
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order same as above (CA 1st row (8bytes), CB 1st row (8bytes), ...)
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*/
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/* Which LED should be used for CAPS LOCK indicator
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* The usual Caps Lock position is C4-6, so the address is
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* 0x24 + (4-1)*0x10 + (8-1) = 0x59 */
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#if !defined(CAPS_LOCK_LED_ADDRESS)
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#define CAPS_LOCK_LED_ADDRESS 0x59
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#endif
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/* Which LED should breathe during sleep */
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#if !defined(BREATHE_LED_ADDRESS)
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#define BREATHE_LED_ADDRESS CAPS_LOCK_LED_ADDRESS
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#endif
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/* =================
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* ChibiOS I2C setup
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* ================= */
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static const I2CConfig i2ccfg = {
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400000 // clock speed (Hz); 400kHz max for IS31
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};
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/* ==============
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* variables
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* ============== */
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// internal communication buffers
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uint8_t tx[2] __attribute__((aligned(2)));
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uint8_t rx[1] __attribute__((aligned(2)));
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// buffer for sending the whole page at once (used also as a temp buffer)
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uint8_t full_page[0xB4+1] = {0};
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// LED mask (which LEDs are present, selected by bits)
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// See page comment above, control alternates CA matrix/CB matrix
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// IC60 pcb uses only CA matrix.
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// Each byte is a control pin for 8 leds 8-1
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const uint8_t is31_ic60_leds_mask[0x12] = {
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0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF,
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0x00, 0xFF, 0x00, 0xFF, 0x00, 0x7F, 0x00, 0x00, 0x00
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};
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/* ============================
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* communication functions
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* ============================ */
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msg_t is31_select_page(uint8_t page) {
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tx[0] = IS31_COMMANDREGISTER;
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tx[1] = page;
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return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
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}
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msg_t is31_write_data(uint8_t page, uint8_t *buffer, uint8_t size) {
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is31_select_page(page);
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return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, buffer, size, NULL, 0, US2ST(IS31_TIMEOUT));
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}
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msg_t is31_write_register(uint8_t page, uint8_t reg, uint8_t data) {
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is31_select_page(page);
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tx[0] = reg;
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tx[1] = data;
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return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 2, NULL, 0, US2ST(IS31_TIMEOUT));
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}
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msg_t is31_read_register(uint8_t b, uint8_t reg, uint8_t *result) {
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is31_select_page(b);
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tx[0] = reg;
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return i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, tx, 1, result, 1, US2ST(IS31_TIMEOUT));
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}
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/* ========================
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* initialise the IS31 chip
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* ======================== */
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void is31_init(void) {
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// just to be sure that it's all zeroes
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__builtin_memset(full_page,0,0xB4+1);
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// zero function page, all registers (assuming full_page is all zeroes)
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is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
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// disable hardware shutdown
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palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPad(GPIOB, 16);
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chThdSleepMilliseconds(10);
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// software shutdown
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, 0);
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chThdSleepMilliseconds(10);
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// zero function page, all registers
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is31_write_data(IS31_FUNCTIONREG, full_page, 0xD + 1);
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chThdSleepMilliseconds(10);
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// software shutdown disable (i.e. turn stuff on)
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
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chThdSleepMilliseconds(10);
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// zero all LED registers on all 8 pages
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uint8_t i;
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for(i=0; i<8; i++) {
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is31_write_data(i, full_page, 0xB4 + 1);
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chThdSleepMilliseconds(1);
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}
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}
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/* ==================
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* LED control thread
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* ================== */
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#define LED_MAILBOX_NUM_MSGS 5
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static msg_t led_mailbox_queue[LED_MAILBOX_NUM_MSGS];
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mailbox_t led_mailbox;
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static THD_WORKING_AREA(waLEDthread, 256);
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static THD_FUNCTION(LEDthread, arg) {
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(void)arg;
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chRegSetThreadName("LEDthread");
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uint8_t temp;
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uint8_t save_page, save_breath1, save_breath2;
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msg_t msg, retval;
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while(true) {
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// wait for a message (asynchronous)
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// (messages are queued (up to LED_MAILBOX_NUM_MSGS) if they can't
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// be processed right away)
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chMBFetch(&led_mailbox, &msg, TIME_INFINITE);
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// process 'msg' here
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switch(msg) {
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//TODO: make this generic and able to turn on/off any address and loop through all(or current) pages
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case LED_MSG_CAPS_ON:
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// turn caps on on pages 1 and 2
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is31_write_register(0, CAPS_LOCK_LED_ADDRESS, 0xFF);
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is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0xFF);
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is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0xFF);
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break;
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case LED_MSG_CAPS_OFF:
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// turn caps off on pages 1 and 2
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is31_write_register(0, CAPS_LOCK_LED_ADDRESS, 0);
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is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0);
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is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0);
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break;
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case LED_MSG_SLEEP_LED_ON:
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// save current settings
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is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &save_page);
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is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, &save_breath1);
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is31_read_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, &save_breath2);
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// use pages 7 and 8 for (hardware) breathing (assuming they're empty)
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is31_write_register(6, BREATHE_LED_ADDRESS, 0xFF);
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is31_write_register(7, BREATHE_LED_ADDRESS, 0x00);
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (6<<4)|6);
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
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retval = MSG_TIMEOUT;
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temp = 6;
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while(retval == MSG_TIMEOUT) {
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// switch to the other page
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, temp);
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temp = (temp == 6 ? 7 : 6);
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// the times should be sufficiently long for IS31 to finish switching pages
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retval = chMBFetch(&led_mailbox, &msg, MS2ST(temp == 6 ? 4000 : 6000));
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}
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// received a message (should be a wakeup), so restore previous state
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chThdSleepMilliseconds(3000); // need to wait until the page change finishes
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// note: any other messages are queued
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, save_breath1);
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, save_breath2);
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, save_page);
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break;
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case LED_MSG_SLEEP_LED_OFF:
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// should not get here; wakeup should be received in the branch above
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break;
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case LED_MSG_ALL_TOGGLE:
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// read current page into 'temp'
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is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
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chThdSleepMilliseconds(1);
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// switch to 'the other' page
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if(temp==2) {
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 0);
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} else {
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 2);
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}
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break;
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case LED_MSG_GAME_TOGGLE:
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// read current page into 'temp'
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is31_read_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, &temp);
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chThdSleepMilliseconds(1);
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// switch to 'the other' page
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if(temp==1) {
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 0);
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} else {
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, 1);
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}
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break;
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}
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}
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}
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/* =============
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* hook into TMK
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* ============= */
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void led_controller_init(void) {
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uint8_t i;
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xprintf("led_controller_init");
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/* initialise I2C */
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/* I2C pins */
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palSetPadMode(GPIOB, 0, PAL_MODE_ALTERNATIVE_2); // PTB0/I2C0/SCL
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palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATIVE_2); // PTB1/I2C0/SDA
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/* start I2C */
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i2cStart(&I2CD1, &i2ccfg);
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// try high drive (from kiibohd)
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I2CD1.i2c->C2 |= I2Cx_C2_HDRS;
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// try glitch fixing (from kiibohd)
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I2CD1.i2c->FLT = 4;
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chThdSleepMilliseconds(10);
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/* initialise IS31 chip */
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is31_init();
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/* enable LEDs on all pages */
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full_page[0] = 0;
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__builtin_memcpy(full_page+1, is31_ic60_leds_mask, 0x12);
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for(i=0; i<8; i++) {
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is31_write_data(i, full_page, 1+0x12);
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}
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/* enable breathing when the displayed page changes */
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// Fade-in Fade-out, time = 26ms * 2^N, N=3
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL1, (3<<4)|3);
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is31_write_register(IS31_FUNCTIONREG, IS31_REG_BREATHCTRL2, IS31_REG_BREATHCTRL2_ENABLE|3);
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// clean up the capslock LED
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is31_write_register(1, CAPS_LOCK_LED_ADDRESS, 0);
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is31_write_register(2, CAPS_LOCK_LED_ADDRESS, 0);
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/* more time consuming LED processing should be offloaded into
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* a thread, with asynchronous messaging. */
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chMBObjectInit(&led_mailbox, led_mailbox_queue, LED_MAILBOX_NUM_MSGS);
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chThdCreateStatic(waLEDthread, sizeof(waLEDthread), LOWPRIO, LEDthread, NULL);
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}
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//TODO: Don't know equivalent QMK hooks for these
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//
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//void hook_usb_suspend_entry(void) {
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//#ifdef SLEEP_LED_ENABLE
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// chSysLockFromISR();
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// chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_ON);
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// chSysUnlockFromISR();
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//#endif /* SLEEP_LED_ENABLE */
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//}
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//
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//void hook_usb_suspend_loop(void) {
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// chThdSleepMilliseconds(100);
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// /* Remote wakeup */
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// if((USB_DRIVER.status & 2) && suspend_wakeup_condition()) {
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// send_remote_wakeup(&USB_DRIVER);
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// }
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//}
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//
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//void hook_usb_wakeup(void) {
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//#ifdef SLEEP_LED_ENABLE
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// chSysLockFromISR();
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// chMBPostI(&led_mailbox, LED_MSG_SLEEP_LED_OFF);
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// chSysUnlockFromISR();
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//#endif /* SLEEP_LED_ENABLE */
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//}
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//*/
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