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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
commit 1f67de2001
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6 changed files with 113 additions and 62 deletions
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61
drivers/gpio/pca9555.c
View file

@ -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;
}

81
drivers/gpio/pca9555.h
View file

@ -1,20 +1,11 @@
/* 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
#pragma once
#include <stdint.h>
#include <stdbool.h>
/*
PCA9555
,----------.
@ -38,20 +29,60 @@
`----------'
*/
#define PCA9555_PORT0 0
#define PCA9555_PORT1 1
/**
* Port ID
*/
typedef enum {
PCA9555_PORT0,
PCA9555_PORT1,
} pca9555_port_t;
#define ALL_OUTPUT 0
#define ALL_INPUT 0xFF
#define ALL_LOW 0
#define ALL_HIGH 0xFF
/**
* Helpers for set_config
*/
enum {
ALL_OUTPUT = 0,
ALL_INPUT = 0xFF,
};
/**
* Helpers for set_output
*/
enum {
ALL_LOW = 0,
ALL_HIGH = 0xFF,
};
/**
* Init expander and any other dependent drivers
*/
void pca9555_init(uint8_t slave_addr);
void pca9555_set_config(uint8_t slave_addr, uint8_t port, uint8_t conf);
/**
* Configure input/output to a given port
*/
bool pca9555_set_config(uint8_t slave_addr, pca9555_port_t port, uint8_t conf);
void pca9555_set_output(uint8_t slave_addr, uint8_t port, uint8_t conf);
/**
* Write high/low to a given port
*/
bool pca9555_set_output(uint8_t slave_addr, pca9555_port_t port, uint8_t conf);
uint8_t pca9555_readPins(uint8_t slave_addr, uint8_t port);
/**
* Write high/low to both ports sequentially
*
* - slightly faster than multiple set_output
*/
bool pca9555_set_output_all(uint8_t slave_addr, uint8_t confA, uint8_t confB);
uint16_t pca9555_readAllPins(uint8_t slave_addr);
/**
* Read state of a given port
*/
bool pca9555_readPins(uint8_t slave_addr, pca9555_port_t port, uint8_t* ret);
/**
* Read state of both ports sequentially
*
* - slightly faster than multiple readPins
*/
bool pca9555_readPins_all(uint8_t slave_addr, uint16_t* ret);

8
keyboards/moon/matrix.c
View file

@ -158,10 +158,12 @@ static void select_row(uint8_t row) {
}
static uint16_t read_cols(void) {
uint16_t state_1 = pca9555_readPins(IC2, PCA9555_PORT0);
uint16_t state_2 = pca9555_readPins(IC2, PCA9555_PORT1);
uint8_t state_1 = 0;
uint8_t state_2 = 0;
pca9555_readPins(IC2, PCA9555_PORT0, &state_1);
pca9555_readPins(IC2, PCA9555_PORT1, &state_2);
uint16_t state = ((state_1 & PORT0_COLS_MASK) << 3) | ((state_2 & PORT1_COLS_MASK));
uint16_t state = (((uint16_t)state_1 & PORT0_COLS_MASK) << 3) | (((uint16_t)state_2 & PORT1_COLS_MASK));
// A low pin indicates an active column
return (~state) & COLS_MASK;

11
keyboards/switchplate/southpaw_65/matrix.c
View file

@ -51,11 +51,14 @@ static void select_row(uint8_t row) {
static uint32_t read_cols(void) {
//Read column inputs. Pins 13-31 are used. Split across both ICs but they are sequential
uint32_t state_1 = pca9555_readPins(IC1, PCA9555_PORT1);
uint32_t state_2 = pca9555_readPins(IC2, PCA9555_PORT0);
uint32_t state_3 = pca9555_readPins(IC2, PCA9555_PORT1);
uint8_t state_1 = 0;
uint8_t state_2 = 0;
uint8_t state_3 = 0;
pca9555_readPins(IC2, PCA9555_PORT0, &state_1);
pca9555_readPins(IC2, PCA9555_PORT1, &state_2);
pca9555_readPins(IC1, PCA9555_PORT1, &state_3);
uint32_t state = (((state_3 & 0b01111111) << 12) | (state_2 << 4) | ((state_1 & 0b11110000) >> 4));
uint32_t state = ((((uint32_t)state_3 & 0b01111111) << 12) | ((uint32_t)state_2 << 4) | (((uint32_t)state_1 & 0b11110000) >> 4));
return ~state;
}

3
keyboards/xiudi/xd84/matrix.c
View file

@ -53,7 +53,8 @@ static void select_row(uint8_t row) {
static uint16_t read_cols(void) {
// uint16_t state_1 = pca9555_readPins(IC2, PCA9555_PORT0);
// uint16_t state_2 = pca9555_readPins(IC2, PCA9555_PORT1);
uint16_t state = pca9555_readAllPins(IC2);
uint16_t state = 0;
pca9555_readPins_all(IC2, &state);
// For the XD84 all cols are on the same IC and mapped sequentially
// while this technically gives 16 column reads,

11
keyboards/xiudi/xd96/matrix.c
View file

@ -50,13 +50,16 @@ static void select_row(uint8_t row) {
}
static uint32_t read_cols(void) {
uint32_t state_1 = pca9555_readPins(IC2, PCA9555_PORT0);
uint32_t state_2 = pca9555_readPins(IC2, PCA9555_PORT1);
uint32_t state_3 = pca9555_readPins(IC1, PCA9555_PORT1);
uint8_t state_1 = 0;
uint8_t state_2 = 0;
uint8_t state_3 = 0;
pca9555_readPins(IC2, PCA9555_PORT0, &state_1);
pca9555_readPins(IC2, PCA9555_PORT1, &state_2);
pca9555_readPins(IC1, PCA9555_PORT1, &state_3);
// For the XD96 the pins are mapped to port expanders as follows:
// all 8 pins port 0 IC2, first 6 pins port 1 IC2, first 4 pins port 1 IC1
uint32_t state = (((state_3 & 0b00001111) << 14) | ((state_2 & 0b00111111) << 8) | state_1);
uint32_t state = ((((uint32_t)state_3 & 0b00001111) << 14) | (((uint32_t)state_2 & 0b00111111) << 8) | (uint32_t)state_1);
return (~state) & 0b111111111111111111;
}