diff options
Diffstat (limited to 'drivers/gpio/pca9555.c')
| -rw-r--r-- | drivers/gpio/pca9555.c | 61 | 
1 files changed, 36 insertions, 25 deletions
| diff --git a/drivers/gpio/pca9555.c b/drivers/gpio/pca9555.c index 02b5abbdde..adcd040083 100644 --- a/drivers/gpio/pca9555.c +++ b/drivers/gpio/pca9555.c @@ -1,18 +1,6 @@ -/* 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/>. - */ +// Copyright 2020 zvecr<[email protected]> +// SPDX-License-Identifier: GPL-2.0-or-later +  #include "i2c_master.h"  #include "pca9555.h" @@ -45,39 +33,59 @@ void pca9555_init(uint8_t slave_addr) {      // i2c_stop();  } -void pca9555_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf) { +bool pca9555_set_config(uint8_t slave_addr, pca9555_port_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"); +        return false;      } + +    return true;  } -void pca9555_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf) { +bool pca9555_set_output(uint8_t slave_addr, pca9555_port_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"); +        return false;      } + +    return true;  } -uint8_t pca9555_readPins(uint8_t slave_addr, uint8_t port) { +bool pca9555_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB) { +    uint8_t addr    = SLAVE_TO_ADDR(slave_addr); +    uint8_t conf[2] = {confA, confB}; + +    i2c_status_t ret = i2c_writeReg(addr, CMD_OUTPUT_0, &conf[0], sizeof(conf), TIMEOUT); +    if (ret != I2C_STATUS_SUCCESS) { +        dprintf("pca9555_set_output::FAILED::%u\n", ret); +        return false; +    } + +    return true; +} + +bool pca9555_readPins(uint8_t slave_addr, pca9555_port_t port, uint8_t* out) {      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); +    i2c_status_t ret = i2c_readReg(addr, cmd, out, sizeof(uint8_t), TIMEOUT);      if (ret != I2C_STATUS_SUCCESS) {          print("pca9555_readPins::FAILED\n"); +        return false;      } -    return data; + +    return true;  } -uint16_t pca9555_readAllPins(uint8_t slave_addr) { +bool pca9555_readPins_all(uint8_t slave_addr, uint16_t* out) {      uint8_t addr = SLAVE_TO_ADDR(slave_addr);      typedef union { @@ -85,11 +93,14 @@ uint16_t pca9555_readAllPins(uint8_t slave_addr) {          uint16_t u16;      } data16; -    data16 data; +    data16 data = {.u16 = 0};      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"); +        print("pca9555_readPins_all::FAILED\n"); +        return false;      } -    return data.u16; + +    *out = data.u16; +    return true;  } | 
