From 657d05593491f7d4d1346f0f06f9972fdbde9095 Mon Sep 17 00:00:00 2001 From: zvecr Date: Mon, 18 Feb 2019 01:47:01 +0000 Subject: Inital port of xd84 (#5164) * Inital port of xd84 * Inital port of xd84 - review comments --- keyboards/xd84/pca9555.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 keyboards/xd84/pca9555.c (limited to 'keyboards/xd84/pca9555.c') diff --git a/keyboards/xd84/pca9555.c b/keyboards/xd84/pca9555.c new file mode 100644 index 000000000..df4631e9d --- /dev/null +++ b/keyboards/xd84/pca9555.c @@ -0,0 +1,63 @@ +#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; +} -- cgit v1.2.3