You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
2.0 KiB
63 lines
2.0 KiB
/*
|
|
* Copyright 2020 Richard Titmuss (richard.titmuss@gmail.com)
|
|
* Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#include QMK_KEYBOARD_H
|
|
#include "i2c_master.h"
|
|
#include "mcp23018.h"
|
|
|
|
#define MCP23018_ADDR 0b0100000
|
|
|
|
#define MCP23018_TIMEOUT 100
|
|
|
|
static i2c_status_t mcp23018_status = I2C_STATUS_ERROR;
|
|
|
|
void msp23018_init(void) {
|
|
mcp23018_status = I2C_STATUS_SUCCESS;
|
|
|
|
// Set pin direction
|
|
uint8_t iodir[] = {0b00001111, 0b11111111};
|
|
mcp23018_writeReg(IODIRA, iodir, 2);
|
|
|
|
// Set pull-up
|
|
uint8_t gppu[] = {0b00001111, 0b11111000};
|
|
mcp23018_writeReg(GPPUA, gppu, 2);
|
|
|
|
// LEDs output high
|
|
uint8_t gpio[] = {0b00000000, 0b00000111};
|
|
mcp23018_writeReg(GPIOA, gpio, 2);
|
|
}
|
|
|
|
bool mcp23018_reset_required(void) { return mcp23018_status != I2C_STATUS_SUCCESS; }
|
|
|
|
i2c_status_t mcp23018_writeReg(uint8_t regaddr, const uint8_t* data, uint16_t length) {
|
|
if (mcp23018_status) {
|
|
return mcp23018_status;
|
|
}
|
|
|
|
mcp23018_status = i2c_writeReg((MCP23018_ADDR << 1), regaddr, data, length, MCP23018_TIMEOUT);
|
|
return mcp23018_status;
|
|
}
|
|
|
|
i2c_status_t mcp23018_readReg(uint8_t regaddr, uint8_t* data, uint16_t length) {
|
|
if (mcp23018_status) {
|
|
return mcp23018_status;
|
|
}
|
|
|
|
mcp23018_status = i2c_readReg((MCP23018_ADDR << 1), regaddr, data, length, MCP23018_TIMEOUT);
|
|
return mcp23018_status;
|
|
}
|