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- #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;
- }
-
-
-
- }
- 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_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_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_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_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;
- }
- uint16_t pca9555_readAllPins(uint8_t slave_addr) {
- uint8_t addr = SLAVE_TO_ADDR(slave_addr);
- typedef union {
- uint8_t u8[2];
- uint16_t u16;
- } data16;
- data16 data;
- i2c_status_t ret = i2c_readReg(addr, CMD_INPUT_0, &data.u8[0], sizeof(data), TIMEOUT);
- if (ret != I2C_STATUS_SUCCESS) {
- print("pca9555_readAllPins::FAILED\n");
- }
- return data.u16;
- }
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