Sensor Watch  0.0.0
A board replacement for the classic Casio F-91W wristwatch, powered by a Microchip SAM L22 microcontroller.
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 
38 void watch_enable_i2c(void);
39 
42 void watch_disable_i2c(void);
43 
49 void watch_i2c_send(int16_t addr, uint8_t *buf, uint16_t length);
50 
56 void watch_i2c_receive(int16_t addr, uint8_t *buf, uint16_t length);
57 
63 void watch_i2c_write8(int16_t addr, uint8_t reg, uint8_t data);
64 
70 uint8_t watch_i2c_read8(int16_t addr, uint8_t reg);
71 
81 uint16_t watch_i2c_read16(int16_t addr, uint8_t reg);
82 
92 uint32_t watch_i2c_read24(int16_t addr, uint8_t reg);
93 
94 
104 uint32_t watch_i2c_read32(int16_t addr, uint8_t reg);
106 #endif
void watch_disable_i2c(void)
Disables the I2C peripheral.
Definition: watch_i2c.c:35
uint32_t watch_i2c_read32(int16_t addr, uint8_t reg)
Reads an unsigned little-endian int from a register in an I2C device.
Definition: watch_i2c.c:86
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.
Definition: watch_i2c.c:45
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.
Definition: watch_i2c.c:76
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.
Definition: watch_i2c.c:40
void watch_enable_i2c(void)
Enables the I2C peripheral. Call this before attempting to interface with I2C devices.
Definition: watch_i2c.c:29
uint8_t watch_i2c_read8(int16_t addr, uint8_t reg)
Reads a byte from a register in an I2C device.
Definition: watch_i2c.c:58
uint16_t watch_i2c_read16(int16_t addr, uint8_t reg)
Reads an unsigned little-endian word from a register in an I2C device.
Definition: watch_i2c.c:67
void watch_i2c_write8(int16_t addr, uint8_t reg, uint8_t data)
Writes a byte to a register in an I2C device.
Definition: watch_i2c.c:50