The eXPal Hardware Lib

Files
file	xpal_async32khz.c
	32kHz Timer Implementation
file	xpal_async32khz.h
	Header for the async Timer Base Functions.
file	xpal_power.c
	Power Management Routines for the eXPal Prototype A.
file	xpal_power.h
	Power Management System for the eXPal Prototype A.
file	xpal_StatBar.c
	Functions to control the Status Bar Display.
file	xpal_StatBar.h
	Functions and Definitions to control the StatusBar.
file	xpal_bat.c
	Battery Management Routines for the eXPal Prototype A.
file	xpal_bat.h
	Battery Management Routines for the eXPal Prototype A.
file	xpal_extmem.h
	interface to external SRAM (init, check)
file	xpal_extmem.c
	interface to external SRAM (init, check)
file	keys.h
	Key Scan and alphanumeric input machine header file.
file	keys.c
	Key Scan and key debounce machine implementation file.
file	xpal_board.h
	Basic Board Definitions.
file	spi.h
	SPI access.
file	adc.h
	access to ADC and analog multiplexer
file	cb_list.h
	manage lists of callback functions
file	lh155.h
	low-level display functions
file	display.h
	mid-level display functions
file	display-font.c
	character display functions
file	term.h
	simple terminal emulation on LCD display
file	usarts.h
	USART access.
file	usarts.c
	generic USART access implementation
file	usarts_int.h
	USART access - internal definitions.
file	usarts-recv.c
	generic USART access implementation - receive
file	usarts-send.c
	generic USART access implementation - send
file	fifo.h
	FIFOs for use by USART module.
file	usb-fifo.h
	USB FIFO access.
file	usb-fifo.c
	USB FIFO access.
file	timer.h
	functions for time measurement
file	timer.c
file	font.h
	declarations for font description

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Detailed Description

This software library will provide an API to the Basic Input Output System (BIOS).

See also:

• Time Handling (proposal)

Board Dependant Hardware Definitions

expal_board::h

Implemented Functions:

• Alias Definition for all IO lines, Ports and Data Direction Registers
• Definition of Controller registers, used for this hardware

Display Module

display.h

Implemented Functions:

Analg/Digital Module

adc.h

Implemented Functions:

Callback List Module

cb_list.h

Implemented Functions:

Key Module

keys.h

Implemented Functions:

• Scan key matrix and generate a 16bit scan code (can recognize multiple simultanuous keys)
• Translate from Scan Code to system input code eg. ASCII
• Recognize ASCII from multiple number key clicks
• Keep inputs in a ring buffer for later processing

USART Module

usarts.h

Implemented Functions:

• USART initialization
• read/write from/to USARTs

USB Module

usb-fifo.h

Implemented Functions:

• read/write from/to USB port

Power Management Module

power::h

Implemented Functions:

• Board initializion for a static, low power start state
• System to recognize the wakeup source
• ISR's for all key wake-up interrupts
• Callback to determine optimum system power state
• Power off timer
• Sleep Function
• Battery management (measurement, estimate remaining run time)
• Control functions for voltage regulatrs

32kHz Watch Timer Module

async32khz::h

Implemented Functions:

• Timer init
• Two Timer ISR's for 1sec and 19,53ms
• Provides call back interface to provide timer calls to other modules

NMEA Parser Module

nmea_hl.h

Implemented Functions:

• parsing of NMEA messages