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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [examples/] [serial.c] - Rev 798
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/* * Written 1999-03-19 by Jonathan Larmour, Cygnus Solutions * This file is in the public domain and may be used for any purpose */ /* CONFIGURATION CHECKS */ #include <pkgconf/system.h> /* which packages are enabled/disabled */ #ifdef CYGPKG_KERNEL # include <pkgconf/kernel.h> #endif #ifdef CYGPKG_LIBC # include <pkgconf/libc.h> #endif #ifdef CYGPKG_IO_SERIAL # include <pkgconf/io_serial.h> #endif #ifndef CYGFUN_KERNEL_API_C # error Kernel API must be enabled to build this example #endif #ifndef CYGPKG_LIBC_STDIO # error C library standard I/O must be enabled to build this example #endif #ifndef CYGPKG_IO_SERIAL_HALDIAG # error I/O HALDIAG pseudo-device driver must be enabled to build this example #endif /* INCLUDES */ #include <stdio.h> /* printf */ #include <string.h> /* strlen */ #include <cyg/kernel/kapi.h> /* All the kernel specific stuff */ #include <cyg/io/io.h> /* I/O functions */ #include <cyg/hal/hal_arch.h> /* CYGNUM_HAL_STACK_SIZE_TYPICAL */ /* DEFINES */ #define NTHREADS 1 #define STACKSIZE ( CYGNUM_HAL_STACK_SIZE_TYPICAL + 4096 ) /* STATICS */ static cyg_handle_t thread[NTHREADS]; static cyg_thread thread_obj[NTHREADS]; static char stack[NTHREADS][STACKSIZE]; /* FUNCTIONS */ static void simple_prog(CYG_ADDRESS data) { cyg_io_handle_t handle; Cyg_ErrNo err; const char test_string[] = "serial example is working correctly!\n"; cyg_uint32 len = strlen(test_string); printf("Starting serial example\n"); err = cyg_io_lookup( "/dev/haldiag", &handle ); if (ENOERR == err) { printf("Found /dev/haldiag. Writing string....\n"); err = cyg_io_write( handle, test_string, &len ); } if (ENOERR == err) { printf("I think I wrote the string. Did you see it?\n"); } printf("Serial example finished\n"); } void cyg_user_start(void) { cyg_thread_create(4, simple_prog, (cyg_addrword_t) 0, "serial", (void *)stack[0], STACKSIZE, &thread[0], &thread_obj[0]); cyg_thread_resume(thread[0]); }
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