hal_gw0.c File Reference

Hardware Abstraction Layer (HAL) for the Smith Electronics Zigbee to Ethernet Gateway GW-0. More...

#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_nvic.h"
#include "inc/hw_types.h"
#include "inc/hw_ssi.h"
#include "driverlib/ethernet.h"
#include "driverlib/flash.h"
#include "driverlib/gpio.h"
#include "driverlib/ssi.h"
#include "hal_gw0.h"
#include "utils/uartstdio.h"
#include "inc/hw_uart.h"
#include "driverlib/uart.h"

Defines
#define	NUM_LEDS   1
#define	HAL_HELPER
Functions
void	delayMs (unsigned int ms)
void	halInit ()
int	putchar (int c)
void	toggleLed (unsigned char whichLed)
signed int	setLed (unsigned char led)
void	clearLeds ()
void	halSpiInit ()
void	spiWrite (unsigned char *bytes, unsigned char numBytes)

---

Detailed Description

Hardware Abstraction Layer (HAL) for the Smith Electronics Zigbee to Ethernet Gateway GW-0.

Tools to interact with the GW-0 onboard peripherals for ZNP interface. The Gw0 is a Zigbee to Ethernet gateway based on the TI LM3S6965 Arm Cortex-M3 processor. Since the GW-0 is an existing Stellaris Project with a ZNP "grafted in", things are a little different here.

The ZNP library & examples require the following methods to be implemented. Refer to individual method descriptions for more information.

• halInit() //Not implemented, handled elsewhere in the project
• putchar() //Not implemented, handled elsewhere in the project
• halSpiInit()
• delayMs()
• halResetZnp()
• toggleLed()

Rev

535

Author

dsmith

Date

2010-05-26 21:35:08 -0700 (Wed, 26 May 2010)

---

Define Documentation

#define HAL_HELPER

Configures hardware for the ZNP peripherals

---

Function Documentation

void clearLeds

(

)

Turns OFF LEDs.

Postcondition:

LEDs are turned off.

void delayMs

(

unsigned int

ms

)

Blocking Delay in Milliseconds delays by at least the specified number of milliseconds (ms)

Precondition:

TICKS_PER_MS set

Parameters:

ms

number of milliseconds to delay

void halInit

(

)

Note:

It takes five clock cycles after SysCtlPeripheralEnable() is called to enable a peripheral before the the peripheral is actually enabled. During this time, attempts to access the peripheral will result in a bus fault. Care should be taken to ensure that the peripheral is not accessed during this brief time period.

int putchar

(

int

c

)

Standard putchar() for printf() etc. in stdio.h

Precondition:

UART has been configured.

signed int setLed

(

unsigned char

led

)

Turns ON the specified LED.

Parameters:

led

the LED to turn on, must be 0 or 1.

Postcondition:

The specified LED is turned on.

Returns:

0 if success, -1 if invalid LED specified

void spiWrite	(	unsigned char *	bytes,
		unsigned char	numBytes
	)

See Stellaris Application Note spma002.pdf, "Adding 32kB of Serial SRAM to a Stellaris Microcontroller"

void toggleLed

(

unsigned char

whichLed

)

Toggles the specified LED.

Parameters:

led

the LED to toggle, must be 0 or 1.

Postcondition:

The specified LED is toggled.

Returns:

0 if success, -1 if invalid LED specified