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Diffstat (limited to 'keyboards/xd84/pca9555.c')
-rw-r--r--keyboards/xd84/pca9555.c78
1 files changed, 0 insertions, 78 deletions
diff --git a/keyboards/xd84/pca9555.c b/keyboards/xd84/pca9555.c
deleted file mode 100644
index b0e542d8d..000000000
--- a/keyboards/xd84/pca9555.c
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1/* Copyright 2019
2 *
3 * This program is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#include "i2c_master.h"
17#include "pca9555.h"
18
19#include "debug.h"
20
21#define SLAVE_TO_ADDR(n) (n << 1)
22#define TIMEOUT 100
23
24enum {
25 CMD_INPUT_0 = 0,
26 CMD_INPUT_1,
27 CMD_OUTPUT_0,
28 CMD_OUTPUT_1,
29 CMD_INVERSION_0,
30 CMD_INVERSION_1,
31 CMD_CONFIG_0,
32 CMD_CONFIG_1,
33};
34
35void pca9555_init(uint8_t slave_addr) {
36 static uint8_t s_init = 0;
37 if (!s_init) {
38 i2c_init();
39
40 s_init = 1;
41 }
42
43 // TODO: could check device connected
44 // i2c_start(SLAVE_TO_ADDR(slave) | I2C_WRITE);
45 // i2c_stop();
46}
47
48void pca9555_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf) {
49 uint8_t addr = SLAVE_TO_ADDR(slave_addr);
50 uint8_t cmd = port ? CMD_CONFIG_1 : CMD_CONFIG_0;
51
52 i2c_status_t ret = i2c_writeReg(addr, cmd, &conf, sizeof(conf), TIMEOUT);
53 if (ret != I2C_STATUS_SUCCESS) {
54 print("pca9555_set_config::FAILED\n");
55 }
56}
57
58void pca9555_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf) {
59 uint8_t addr = SLAVE_TO_ADDR(slave_addr);
60 uint8_t cmd = port ? CMD_OUTPUT_1 : CMD_OUTPUT_0;
61
62 i2c_status_t ret = i2c_writeReg(addr, cmd, &conf, sizeof(conf), TIMEOUT);
63 if (ret != I2C_STATUS_SUCCESS) {
64 print("pca9555_set_output::FAILED\n");
65 }
66}
67
68uint8_t pca9555_readPins(uint8_t slave_addr, uint8_t port) {
69 uint8_t addr = SLAVE_TO_ADDR(slave_addr);
70 uint8_t cmd = port ? CMD_INPUT_1 : CMD_INPUT_0;
71
72 uint8_t data = 0;
73 i2c_status_t ret = i2c_readReg(addr, cmd, &data, sizeof(data), TIMEOUT);
74 if (ret != I2C_STATUS_SUCCESS) {
75 print("pca9555_readPins::FAILED\n");
76 }
77 return data;
78}