hw-addresses.h

/*
 * https://github.com/Wallacoloo/Raspberry-Pi-DMA-Example : DMA Raspberry Pi Examples
 * Author: Colin Wallace

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*/

/*
 * processor documentation for RPI1 at: http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf
 * pg 38 for DMA
 */

#pragma once

//-------- physical addresses for the peripherals, as found in the processor documentation:
#if defined(RPI_V1)
#define TIMER_BASE    0x20003000
#define DMA_BASE      0x20007000
#define CLOCK_BASE    0x20101000 // Undocumented. Taken from http://www.scribd.com/doc/127599939/BCM2835-Audio-clocks
#define GPIO_BASE     0x20200000
#define PWM_BASE      0x2020C000
#define GPIO_BASE_BUS 0x7E200000 //this is the physical bus address of the GPIO module. This is only used when other peripherals directly connected to the bus (like DMA) need to read/write the GPIOs
#define PWM_BASE_BUS  0x7E20C000

#elif defined(RPI_V2) || defined(RPI_V3)
// RPI2 and 3 use a different chipset, and the peripheral addresses have changed.
#define TIMER_BASE    0x3F003000
#define DMA_BASE      0x3F007000
#define CLOCK_BASE    0x3F101000 // Undocumented. Extrapolated from RPI_V1 CLOCK_BASE
#define GPIO_BASE     0x3F200000
#define PWM_BASE      0x3F20C000
#define GPIO_BASE_BUS 0x7E200000 //this is the physical bus address of the GPIO module. This is only used when other peripherals directly connected to the bus (like DMA) need to read/write the GPIOs
#define PWM_BASE_BUS  0x7E20C000

#else
#error "Must define either RPI_V1, RPI_V2 or RPI_V3, based on target."
#endif