Sensor Watch 0.0.2
A board replacement for the classic Casio F-91W wristwatch, powered by a Microchip SAM L22 microcontroller.
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watch_i2c.h
1/*
2 * MIT License
3 *
4 * Copyright (c) 2020 Joey Castillo
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24#ifndef _WATCH_I2C_H_INCLUDED
25#define _WATCH_I2C_H_INCLUDED
27
28#include "watch.h"
29
36
39
43
49void watch_i2c_send(int16_t addr, uint8_t *buf, uint16_t length);
50
56void watch_i2c_receive(int16_t addr, uint8_t *buf, uint16_t length);
57
63void watch_i2c_write8(int16_t addr, uint8_t reg, uint8_t data);
64
70uint8_t watch_i2c_read8(int16_t addr, uint8_t reg);
71
81uint16_t watch_i2c_read16(int16_t addr, uint8_t reg);
82
92uint32_t watch_i2c_read24(int16_t addr, uint8_t reg);
93
94
104uint32_t watch_i2c_read32(int16_t addr, uint8_t reg);
106#endif
void watch_disable_i2c(void)
Disables the I2C peripheral.
uint32_t watch_i2c_read32(int16_t addr, uint8_t reg)
Reads an unsigned little-endian int from a register in an I2C device.
void watch_i2c_receive(int16_t addr, uint8_t *buf, uint16_t length)
Receives a series of values from a device on the I2C bus.
uint32_t watch_i2c_read24(int16_t addr, uint8_t reg)
Reads three bytes as an unsigned little-endian int from a register in an I2C device.
void watch_i2c_send(int16_t addr, uint8_t *buf, uint16_t length)
Sends a series of values to a device on the I2C bus.
void watch_enable_i2c(void)
Enables the I2C peripheral. Call this before attempting to interface with I2C devices.
uint8_t watch_i2c_read8(int16_t addr, uint8_t reg)
Reads a byte from a register in an I2C device.
uint16_t watch_i2c_read16(int16_t addr, uint8_t reg)
Reads an unsigned little-endian word from a register in an I2C device.
void watch_i2c_write8(int16_t addr, uint8_t reg, uint8_t data)
Writes a byte to a register in an I2C device.