raspberrypi-i2c.h File Reference

Raspberry Pi specific I2C definitions. More...

#include <bsp/raspberrypi.h>
#include <bsp/rpi-gpio.h>
#include <bsp/utility.h>
#include <dev/i2c/i2c.h>

Go to the source code of this file.

Enumerations
enum	raspberrypi_bsc_masters {   raspberrypi_bscm0 , raspberrypi_bscm1 , raspberrypi_bscm3 , raspberrypi_bscm4 ,   raspberrypi_bscm5 , raspberrypi_bscm6 }
	I2C controller instances on Raspberry Pi 4. More...

Functions
rtems_status_code	rpi_i2c_init (raspberrypi_bsc_masters device, uint32_t bus_clock)
	Initialize the I2C bus for a specified master.

Detailed Description

Raspberry Pi specific I2C definitions.

Enumeration Type Documentation

raspberrypi_bsc_masters

enum raspberrypi_bsc_masters

I2C controller instances on Raspberry Pi 4.

Enumerator
raspberrypi_bscm0	BSC Master 0 (GPIO 0/1)
raspberrypi_bscm1	BSC Master 1 (GPIO 2/3)
raspberrypi_bscm3	BSC Master 3 (GPIO 4/5)
raspberrypi_bscm4	BSC Master 4 (GPIO 6/7)
raspberrypi_bscm5	BSC Master 5 (GPIO 10/11)
raspberrypi_bscm6	BSC Master 6 (GPIO 22/23)

Function Documentation

rpi_i2c_init()

rtems_status_code rpi_i2c_init	(	raspberrypi_bsc_masters	device,
		uint32_t	bus_clock
	)

Initialize the I2C bus for a specified master.

Parameters

device	The BSC master to initialize.
bus_clock	The desired bus clock frequency in Hz.

Returns

RTEMS status code indicating success or failure.