lcd.c File Reference

#include <sys/svcs.h>
#include <sys/time.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "uart.h"
#include "raven.h"

Include dependency graph for lcd.c:

Defines
#define	LEDMAX   8
	Maximum LED blink window, in units of 200ms epochs.
Functions
void	timer_handler (event_t event, void *cbargs, void *context)
	this function is invoked when the timer is fired
void	__main (event_t event, void *cbargs, void *context)
	this function is invoked after boot
Variables
static int16_t	g_timerfd
	timer descripter, used to hold the return value of timer()
static uint8_t	LED_cnt = 0
	Current LED blink count, in units of 200ms epochs, initialized to 0.
static uint8_t	LED_limit = 0
	Current LED blink limit, in units of 200ms epochs, initialized to 0.

---

Detailed Description

Simple program to drive the RAVEN LCD

---

Define Documentation

#define LEDMAX   8

Maximum LED blink window, in units of 200ms epochs.

---

Function Documentation

void __main	(	event_t	event,
		void *	cbargs,
		void *	context
	)

this function is invoked after boot

__main

Parameters:

	event	equals MAIN as this is a boot event
	cbargs	is NULL for boot event
	context	is NULL for boot event

Returns:

none

Here is the call graph for this function:

void timer_handler	(	event_t	event,
		void *	cbargs,
		void *	context
	)

this function is invoked when the timer is fired

timer_handler

Parameters:

	event	equals to SETITIMER as this is a setitimer() callback
	cbargs	passes resource back from setitimer() call
	context	passes context back from setitimer() call

Returns:

none

Here is the call graph for this function:

---

Variable Documentation

int16_t g_timerfd [static]

timer descripter, used to hold the return value of timer()

uint8_t LED_cnt = 0 [static]

Current LED blink count, in units of 200ms epochs, initialized to 0.

uint8_t LED_limit = 0 [static]

Current LED blink limit, in units of 200ms epochs, initialized to 0.