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author | zvecr <[email protected]> | 2019-03-14 21:22:50 +0000 |
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committer | Drashna Jaelre <[email protected]> | 2019-03-14 14:22:50 -0700 |
commit | 577e99f1954347380dcde6f7160d95c6a38677d5 (patch) | |
tree | f5bddeef9d461a606a42fedd12bdfb1b33560e7d /keyboards/xd96/pca9555.c | |
parent | c02c7b75171cf1038a249872806fc6ee926d79b8 (diff) | |
download | qmk_firmware-577e99f1954347380dcde6f7160d95c6a38677d5.tar.gz qmk_firmware-577e99f1954347380dcde6f7160d95c6a38677d5.zip |
[Keyboard] Inital port of xd96 (#5401)
* Initial import of xd96 based on xd84 code
* Configure xd96 port expander mapping
* Fix xd96 led count
* Fix xd96 port expander reading
* Fix xd96 port expander reading
* Fix xd96 LAYOUT matrix mapping
* Add additional links for xd96 Hardware Availability
* Correct Configurator config
Co-Authored-By: zvecr <[email protected]>
* Readme review comments
Co-Authored-By: zvecr <[email protected]>
Diffstat (limited to 'keyboards/xd96/pca9555.c')
-rw-r--r-- | keyboards/xd96/pca9555.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/keyboards/xd96/pca9555.c b/keyboards/xd96/pca9555.c new file mode 100644 index 0000000000..960df4f4e5 --- /dev/null +++ b/keyboards/xd96/pca9555.c @@ -0,0 +1,78 @@ +/* Copyright 2019 + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#include "i2c_master.h" +#include "pca9555.h" + +#include "debug.h" + +#define SLAVE_TO_ADDR(n) (n<<1) +#define TIMEOUT 100 + +enum { + CMD_INPUT_0 = 0, + CMD_INPUT_1, + CMD_OUTPUT_0, + CMD_OUTPUT_1, + CMD_INVERSION_0, + CMD_INVERSION_1, + CMD_CONFIG_0, + CMD_CONFIG_1 +}; + +void pca9555_init(uint8_t slave_addr) { + static uint8_t s_init = 0; + if (!s_init) { + i2c_init(); + + s_init=1; + } + + // TODO: could check device connected + //i2c_start(SLAVE_TO_ADDR(slave) | I2C_WRITE); + //i2c_stop(); +} + +void pca9555_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf) { + uint8_t addr = SLAVE_TO_ADDR(slave_addr); + uint8_t cmd = port ? CMD_OUTPUT_1 : CMD_OUTPUT_0; + + i2c_status_t ret = i2c_writeReg(addr, cmd, &conf, sizeof(conf), TIMEOUT); + if (ret != I2C_STATUS_SUCCESS) { + print("pca9555_set_config::FAILED\n"); + } +} + +void pca9555_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf) { + uint8_t addr = SLAVE_TO_ADDR(slave_addr); + uint8_t cmd = port ? CMD_CONFIG_1 : CMD_CONFIG_0; + + i2c_status_t ret = i2c_writeReg(addr, cmd, &conf, sizeof(conf), TIMEOUT); + if (ret != I2C_STATUS_SUCCESS) { + print("pca9555_set_output::FAILED\n"); + } +} + +uint8_t pca9555_readPins(uint8_t slave_addr, uint8_t port) { + uint8_t addr = SLAVE_TO_ADDR(slave_addr); + uint8_t cmd = port ? CMD_INPUT_1 : CMD_INPUT_0; + + uint8_t data = 0; + i2c_status_t ret = i2c_readReg(addr, cmd, &data, sizeof(data), TIMEOUT); + if (ret != I2C_STATUS_SUCCESS) { + print("pca9555_readPins::FAILED\n"); + } + return data; +} |