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$Log$ Revision 1.6 2008/01/31 09:38:15 haraldkipp Added return statement in main to avoid warnings with latest GCC.
Revision 1.5 2005/11/22 09:17:31 haraldkipp Replaced specific device names by generalized macros. Thread stack size increased to get it running on ARM CPUs.
Revision 1.4 2005/04/05 18:00:29 haraldkipp Make it work on the Gameboy Advance.
Revision 1.3 2004/09/10 10:31:06 haraldkipp Use newer AVR UART device driver
Revision 1.2 2004/09/08 10:18:23 haraldkipp For EB40A
Revision 1.1 2003/08/05 18:59:05 haraldkipp Release 3.3 update
Revision 1.7 2003/02/04 18:19:40 harald Version 3 released
Revision 1.6 2003/02/04 16:24:36 harald Adapted to version 3
Revision 1.5 2002/06/26 17:29:06 harald First pre-release with 2.4 stack
Revision 1.4 2002/06/04 19:13:06 harald *** empty log message ***
Revision 1.3 2002/05/08 16:02:33 harald First Imagecraft compilation
Revision 1.2 2001/12/04 16:45:40 harald Stack space increased
Revision 1.1 2001/06/28 18:43:13 harald Preview release
This sample demonstrates Nut/OS multithreading.
Each thread is started with 192 bytes of stack. This is very low and doesn't provide much space for local variables.
00001 00086 #include <stdio.h> 00087 #include <io.h> 00088 00089 #include <cfg/arch.h> 00090 #include <dev/board.h> 00091 00092 #include <sys/thread.h> 00093 #include <sys/timer.h> 00094 00095 /* 00096 * High priority thread. 00097 */ 00098 THREAD(Thread1, arg) 00099 { 00100 /* 00101 * Endless loop in high priority thread. 00102 */ 00103 NutThreadSetPriority(16); 00104 for (;;) { 00105 putchar('H'); 00106 NutSleep(125); 00107 } 00108 } 00109 00110 /* 00111 * Low priority thread. 00112 */ 00113 THREAD(Thread2, arg) 00114 { 00115 /* 00116 * Endless loop in low priority thread. 00117 */ 00118 NutThreadSetPriority(128); 00119 for (;;) { 00120 putchar('L'); 00121 NutSleep(125); 00122 } 00123 } 00124 00125 /* 00126 * Main application thread. 00127 */ 00128 int main(void) 00129 { 00130 u_long baud = 115200; 00131 00132 /* 00133 * Register the UART device, open it, assign stdout to it and set 00134 * the baudrate. 00135 */ 00136 NutRegisterDevice(&DEV_UART, 0, 0); 00137 freopen(DEV_UART_NAME, "w", stdout); 00138 _ioctl(_fileno(stdout), UART_SETSPEED, &baud); 00139 00140 puts("\nThread Test"); 00141 00142 /* 00143 * Start two additional threads. All threads are started with 00144 * priority 64. 00145 */ 00146 NutThreadCreate("t1", Thread1, 0, 512); 00147 NutThreadCreate("t2", Thread2, 0, 512); 00148 00149 /* 00150 * Endless loop in main thread. 00151 */ 00152 for (;;) { 00153 putchar('M'); 00154 NutSleep(125); 00155 } 00156 return 0; 00157 }