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/>.
18 #ifndef _GDISP_LLD_BOARD_H
19 #define _GDISP_LLD_BOARD_H
21 static const I2CConfig i2ccfg = {
22 400000 // clock speed (Hz); 400kHz max for IS31
25 #define GDISP_SCREEN_WIDTH 7
26 #define GDISP_SCREEN_HEIGHT 7
28 static const uint8_t led_mask[] = {
29 0xFF, 0x00, /* C1-1 -> C1-16 */
30 0xFF, 0x00, /* C2-1 -> C2-16 */
31 0xFF, 0x00, /* C3-1 -> C3-16 */
32 0xFF, 0x00, /* C4-1 -> C4-16 */
33 0x3F, 0x00, /* C5-1 -> C5-16 */
34 0x00, 0x00, /* C6-1 -> C6-16 */
35 0x00, 0x00, /* C7-1 -> C7-16 */
36 0x00, 0x00, /* C8-1 -> C8-16 */
37 0x00, 0x00, /* C9-1 -> C9-16 */
40 // The address of the LED
41 #define LA(c, r) (c + r * 16 )
42 // Need to be an address that is not mapped, but inside the range of the controller matrix
45 // The numbers in the comments are the led numbers DXX on the PCB
46 // The mapping is taken from the schematic of left hand side
47 static const uint8_t led_mapping[GDISP_SCREEN_HEIGHT][GDISP_SCREEN_WIDTH] = {
48 // 45 44 43 42 41 40 39
49 { LA(1, 1), LA(1, 0), LA(0, 4), LA(0, 3), LA(0, 2), LA(0, 1), LA(0, 0)},
50 // 52 51 50 49 48 47 46
51 { LA(2, 3), LA(2, 2), LA(2, 1), LA(2, 0), LA(1, 4), LA(1, 3), LA(1, 2) },
52 // 58 57 56 55 54 53 N/A
53 { LA(3, 4), LA(3, 3), LA(3, 2), LA(3, 1), LA(3, 0), LA(2, 4), NA },
54 // 67 66 65 64 63 62 61
55 { LA(5, 3), LA(5, 2), LA(5, 1), LA(5, 0), LA(4, 4), LA(4, 3), LA(4, 2) },
56 // 76 75 74 73 72 60 59
57 { LA(7, 3), LA(7, 2), LA(7, 1), LA(7, 0), LA(6, 3), LA(4, 1), LA(4, 0) },
58 // N/A N/A N/A N/A N/A N/A 68
59 { NA, NA, NA, NA, NA, NA, LA(5, 4) },
60 // N/A N/A N/A N/A 71 70 69
61 { NA, NA, NA, NA, LA(6, 2), LA(6, 1), LA(6, 0) },
65 #define IS31_ADDR_DEFAULT 0x74 // AD connected to GND
66 #define IS31_TIMEOUT 5000
68 static GFXINLINE void init_board(GDisplay *g) {
71 palSetPadMode(GPIOB, 0, PAL_MODE_ALTERNATIVE_2); // PTB0/I2C0/SCL
72 palSetPadMode(GPIOB, 1, PAL_MODE_ALTERNATIVE_2); // PTB1/I2C0/SDA
73 palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
74 palClearPad(GPIOB, 16);
76 i2cStart(&I2CD1, &i2ccfg);
77 // try high drive (from kiibohd)
78 I2CD1.i2c->C2 |= I2Cx_C2_HDRS;
79 // try glitch fixing (from kiibohd)
83 static GFXINLINE void post_init_board(GDisplay *g) {
87 static GFXINLINE const uint8_t* get_led_mask(GDisplay* g) {
92 static GFXINLINE uint8_t get_led_address(GDisplay* g, uint16_t x, uint16_t y)
95 return led_mapping[y][x];
98 static GFXINLINE void set_hardware_shutdown(GDisplay* g, bool shutdown) {
101 palSetPad(GPIOB, 16);
104 palClearPad(GPIOB, 16);
108 static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
110 i2cMasterTransmitTimeout(&I2CD1, IS31_ADDR_DEFAULT, data, length, 0, 0, US2ST(IS31_TIMEOUT));
113 #endif /* _GDISP_LLD_BOARD_H */