keyboards/ergodox_infinity/board_is31fl3731c.h

   1 /*
   2 Copyright 2016 Fred Sundvik <fsundvik@gmail.com>
   3
   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.
   8
   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.
  13
  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/>.
  16 */
  17
  18 #ifndef _GDISP_LLD_BOARD_H
  19 #define _GDISP_LLD_BOARD_H
  20
  21 static const I2CConfig i2ccfg = {
  22   400000 // clock speed (Hz); 400kHz max for IS31
  23 };
  24
  25 static const uint8_t led_mask[] = {
  26         0xFF, 0x00, /* C1-1 -> C1-16 */
  27         0xFF, 0x00, /* C2-1 -> C2-16 */
  28         0xFF, 0x00, /* C3-1 -> C3-16 */
  29         0xFF, 0x00, /* C4-1 -> C4-16 */
  30         0x3F, 0x00, /* C5-1 -> C5-16 */
  31         0x00, 0x00, /* C6-1 -> C6-16 */
  32         0x00, 0x00, /* C7-1 -> C7-16 */
  33         0x00, 0x00, /* C8-1 -> C8-16 */
  34         0x00, 0x00, /* C9-1 -> C9-16 */
  35 };
  36
  37 // The address of the LED
  38 #define LA(c, r) (c + r * 16 )
  39 // Need to be an address that is not mapped, but inside the range of the controller matrix
  40 #define NA LA(8, 8)
  41
  42 // The numbers in the comments are the led numbers DXX on the PCB
  43 // The mapping is taken from the schematic of left hand side
  44 static const uint8_t led_mapping[GDISP_SCREEN_HEIGHT][GDISP_SCREEN_WIDTH] = {
  45 //   45        44        43        42        41        40        39
  46    { LA(1, 1), LA(1, 0), LA(0, 4), LA(0, 3), LA(0, 2), LA(0, 1), LA(0, 0)},
  47 //   52        51        50        49        48        47        46
  48    { LA(2, 3), LA(2, 2), LA(2, 1), LA(2, 0), LA(1, 4), LA(1, 3), LA(1, 2) },
  49 //   58        57        56        55        54        53        N/A
  50    { LA(3, 4), LA(3, 3), LA(3, 2), LA(3, 1), LA(3, 0), LA(2, 4), NA },
  51 //   67        66        65        64        63        62        61
  52    { LA(5, 3), LA(5, 2), LA(5, 1), LA(5, 0), LA(4, 4), LA(4, 3), LA(4, 2) },
  53 //   76        75        74        73        72        60        59
  54    { LA(7, 3), LA(7, 2), LA(7, 1), LA(7, 0), LA(6, 3), LA(4, 1), LA(4, 0) },
  55 //   N/A       N/A       N/A       N/A       N/A       N/A       68
  56    { NA,       NA,       NA,       NA,       NA,       NA,       LA(5, 4) },
  57 //   N/A       N/A       N/A       N/A       71        70        69
  58    { NA,       NA,       NA,       NA,       LA(6, 2), LA(6, 1), LA(6, 0) },
  59 };
  60
  61
  62 #define IS31_ADDR_DEFAULT 0x74 // AD connected to GND
  63 #define IS31_TIMEOUT 5000
  64
  65 static GFXINLINE void init_board(GDisplay *g) {
  66     (void) g;
  67     /* I2C pins */
  68     palSetPadMode(GPIOB, 0, PAL_MODE_ALTERNATIVE_2); // PTB0/I2C0/SCL
  69     palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATIVE_2); // PTB1/I2C0/SDA
  70     palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
  71     palClearPad(GPIOB, 16);
  72     /* start I2C */
  73     i2cStart(&I2CD1, &i2ccfg);
  74     // try high drive (from kiibohd)
  75     I2CD1.i2c->C2 |= I2Cx_C2_HDRS;
  76     // try glitch fixing (from kiibohd)
  77     I2CD1.i2c->FLT = 4;
  78 }
  79
  80 static GFXINLINE void post_init_board(GDisplay *g) {
  81         (void) g;
  82 }
  83
  84 static GFXINLINE const uint8_t* get_led_mask(GDisplay* g) {
  85     (void) g;
  86     return led_mask;
  87 }
  88
  89 static GFXINLINE uint8_t get_led_address(GDisplay* g, uint16_t x, uint16_t y)
  90 {
  91     (void) g;
  92     return led_mapping[y][x];
  93 }
  94
  95 static GFXINLINE void set_hardware_shutdown(GDisplay* g, bool shutdown) {
  96     (void) g;
  97     if(!shutdown) {
  98         palSetPad(GPIOB, 16);
  99     }
 100     else {
 101         palClearPad(GPIOB, 16);
 102     }
 103 }
 104
 105 static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
 106         (void) g;
 107         i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, data, length, 0, 0, TIME_US2I(IS31_TIMEOUT));
 108 }
 109
 110 #endif /* _GDISP_LLD_BOARD_H */