main.c

csr芯片点亮lcd的例子,可以学习I2C通讯

/* Copyright (C) Cambridge Silicon Radio Ltd. 2005-2006 */
/* Part of BlueLab 3.5.2-release */
#include <display.h>
#include <message.h>
#include <panic.h>

static const ucs2char valid[] =
{
#include "defined_glyphs.def"
};

enum
{
    SCROLL_ONEWAY_ONCE,
    SCROLL_ONEWAY_FOREVER,
    SCROLL_RETURN_ONCE,
    SCROLL_RETURN_FOREVER,
    SHOW_FONT
};

static const char oneway_once[] = "Scrolling one way once demonstration";
static const char return_once[] = "Bouncing just once demonstration";
static const char oneway_forever[] = "Scrolling one way forever demonstration ... ";
static const char return_forever[] = "Bouncing forever demonstration";

static void handler(Task t, MessageId id, Message m)
{
    switch(id)
    {
        case SCROLL_ONEWAY_ONCE:
            if(DisplayShowPrompt( (ucs2char*)oneway_once, sizeof(oneway_once)-1,
                                  0, DISPLAY_MAX_COLUMN, TRUE,
                                  DISPLAY_SCROLL_TYPE_ONEWAY_ONCE )) Panic();
            MessageSendLater(t, SCROLL_ONEWAY_FOREVER, 0, D_SEC(20));
            break;
        case SCROLL_ONEWAY_FOREVER:
            if(DisplayShowPrompt( (ucs2char*)oneway_forever, sizeof(oneway_forever)-1,
                                  0, DISPLAY_MAX_COLUMN, TRUE,
                                  DISPLAY_SCROLL_TYPE_ONEWAY_ENDLESS )) Panic();
            MessageSendLater(t, SCROLL_RETURN_ONCE, 0, D_SEC(20));
            break;
        case SCROLL_RETURN_ONCE:
            if(DisplayShowPrompt( (ucs2char*)return_once, sizeof(return_once)-1,
                                  0, DISPLAY_MAX_COLUMN, TRUE,
                                  DISPLAY_SCROLL_TYPE_RETURN_ONCE )) Panic();
            MessageSendLater(t, SCROLL_RETURN_FOREVER, 0, D_SEC(25));
            break;
        case SCROLL_RETURN_FOREVER:
            if(DisplayShowPrompt( (ucs2char*)return_forever, sizeof(return_forever)-1,
                                  0, DISPLAY_MAX_COLUMN, TRUE,
                                  DISPLAY_SCROLL_TYPE_RETURN_ENDLESS )) Panic();
            MessageSendLater(t, SHOW_FONT, 0, D_SEC(25));
            break;
        case SHOW_FONT:
            if(DisplayShowPrompt(valid, sizeof(valid), 0, DISPLAY_MAX_COLUMN, TRUE, DISPLAY_SCROLL_TYPE_ONEWAY_ENDLESS))
                Panic();
            break;
    }
}

int main(void)
{
    TaskData t;
    t.handler = handler;

    if(DisplayInit(0, 0)) Panic();

    if(DisplaySelectFont(0)) Panic();

    MessageSend(&t, SCROLL_ONEWAY_ONCE, 0);
    MessageLoop();
    return 0;
}