Raspberry Pi GPIO Library
0.3
Library allowing for control of the Raspberry Pi's GPIO pins.
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Contains defines for i2c.c. More...
#include "rpiGpio.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <time.h>
Go to the source code of this file.
Macros | |
#define | I2C_MAP_SIZE BSC_DEL_OFFSET |
The size the I2C mapping is required to be. | |
#define | I2C_DEFAULT_FREQ_HZ 100000 |
Default I2C clock frequency (Hertz) | |
#define | NSEC_IN_SEC 1000000000 |
nano seconds in a second | |
#define | CLOCKS_PER_BYTE 9 |
Clock pulses per I2C byte - 8 bits + ACK. | |
#define | I2C_C *(gI2cMap + BSC_C_OFFSET / sizeof(uint32_t)) |
BSC_C register. | |
#define | I2C_DIV *(gI2cMap + BSC_DIV_OFFSET / sizeof(uint32_t)) |
BSC_DIV register. | |
#define | I2C_A *(gI2cMap + BSC_A_OFFSET / sizeof(uint32_t)) |
BSC_A register. | |
#define | I2C_DLEN *(gI2cMap + BSC_DLEN_OFFSET / sizeof(uint32_t)) |
BSC_DLEN register. | |
#define | I2C_S *(gI2cMap + BSC_S_OFFSET / sizeof(uint32_t)) |
BSC_S register. | |
#define | I2C_FIFO *(gI2cMap + BSC_FIFO_OFFSET / sizeof(uint32_t)) |
BSC_FIFO register. | |
Contains defines for i2c.c.
This is is part of https://github.com/alanbarr/RaspberryPi-GPIO a C library for basic control of the Raspberry Pi's GPIO pins. Copyright (C) Alan Barr 2012
This code was loosely based on the example code provided by Dom and Gert found at: http://elinux.org/RPi_Low-level_peripherals
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 3 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/.
Definition in file i2c.h.