1 /*---------------------------------------------------------------------------*
2 Project: TwlSDK - OS - demos - waitIrq-1
3 File: main.c
4
5 Copyright 2003-2008 Nintendo. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain
8 proprietary information of Nintendo of America Inc. and/or Nintendo
9 Company Ltd., and are protected by Federal copyright law. They may
10 not be disclosed to third parties or copied or duplicated in any form,
11 in whole or in part, without the prior written consent of Nintendo.
12
13 $Date:: 2008-12-08#$
14 $Rev: 9555 $
15 $Author: kitase_hirotake $
16 *---------------------------------------------------------------------------*/
17 #include <nitro.h>
18
19 #define STACK_SIZE 1024
20 #define THREAD1_PRIO 17
21
22 OSThread thread1;
23 u32 stack1[STACK_SIZE / sizeof(u32)];
24
25 void VBlankIntr(void);
26 void proc1(void *arg);
27
28 //================================================================================
29 /*---------------------------------------------------------------------------*
30 Name: NitroMain
31
32 Description: main
33
34 Arguments: None
35
36 Returns: None
37 *---------------------------------------------------------------------------*/
NitroMain()38 void NitroMain()
39 {
40 s32 n;
41
42 OS_Init();
43 OS_InitThread();
44
45 //---- create thread1
46 OS_CreateThread(&thread1, proc1, NULL, stack1 + STACK_SIZE / sizeof(u32), STACK_SIZE, THREAD1_PRIO);
47 OS_WakeupThreadDirect(&thread1);
48
49 //---- VBlank setting
50 (void)OS_SetIrqFunction(OS_IE_V_BLANK, VBlankIntr);
51 (void)OS_EnableIrqMask(OS_IE_V_BLANK);
52 (void)OS_EnableIrq();
53 (void)GX_VBlankIntr(TRUE);
54
55 //---- main loop
56 for (n = 0; n < 5; n++)
57 {
58 // while waiting vblank, lower priority thread runs and display 'X'.
59 // if vblank interrupt occurred, return here immidiately.
60
61 OS_Printf("\n[loop %d]", n);
62 OS_WaitIrq(TRUE, OS_IE_V_BLANK);
63 }
64
65 OS_Printf("\n");
66 OS_Printf("==== Finish sample.\n");
67 OS_Terminate();
68 }
69
70 //--------------------------------------------------------------------------------
71 // V-Blank interrupt handler
72 //
VBlankIntr(void)73 void VBlankIntr(void)
74 {
75 OS_SetIrqCheckFlag(OS_IE_V_BLANK);
76 }
77
78 //--------------------------------------------------------------------------------
79 // proc1
80 //
proc1(void * arg)81 void proc1(void *arg)
82 {
83 #pragma unused(arg)
84 int i = 0;
85
86 while(1)
87 {
88 if ( ((i++) & 0xff) == 0 )
89 {
90 (void)OS_DisableInterrupts();
91 OS_Printf("X");
92 (void)OS_EnableInterrupts();
93 }
94 }
95 }
96
97 /*====== End of main.c ======*/
98