diff options
Diffstat (limited to 'drivers/gpio/pca9555.c')
| -rw-r--r-- | drivers/gpio/pca9555.c | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/drivers/gpio/pca9555.c b/drivers/gpio/pca9555.c index b0e542d8de..496bbca04e 100644 --- a/drivers/gpio/pca9555.c +++ b/drivers/gpio/pca9555.c @@ -22,57 +22,57 @@ #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, + 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(); + static uint8_t s_init = 0; + if (!s_init) { + i2c_init(); - s_init = 1; - } + s_init = 1; + } - // TODO: could check device connected - // i2c_start(SLAVE_TO_ADDR(slave) | I2C_WRITE); - // i2c_stop(); + // 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_CONFIG_1 : CMD_CONFIG_0; + 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"); - } + 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; + 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"); - } + 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 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; + 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; } |