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Align existing pca9555 driver to better match mcp23018 API (#16277)

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Joel Challis 2022-02-09 19:55:39 +00:00 • committed by GitHub
parent 96afc7a03a
commit 1f67de2001
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6 changed files with 113 additions and 62 deletions
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61
drivers/gpio/pca9555.c
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@ -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<git@zvecr.com>
// 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;
}