eCosPro® Reference Manual
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# Hardware definitions

## Name

AT91SAM7 hardware definitions -- Details on obtaining hardware definitions for AT91

## Device Definitions

The file `<cyg/hal/plf_io.h>` provides definitions related to AT91SAM7 subsystems. This file should not be included explicitly, but is included automatically whenever `<cyg/hal/hal_io.h>` is included. This file mainly includes base address definitions for the interrupt controller, power management controller, clock generator, memory controller, external bus interface, GPIO, USART, MCI, CAN, TWI (I²C®), Ethernet, timer counter, RTC, and SPI subsystems, depending on the exact model.

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