source: mainline/uspace/app/test_serial/test_serial.c@ 2e7f392b

/*
 * Copyright (c) 2009 Lenka Trochtova
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup test_serial
 * @brief       test the serial port driver - read from the serial port
 * @{
 */ 
/**
 * @file
 */

#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <ipc/ipc.h>
#include <sys/types.h>
#include <async.h>
#include <ipc/services.h>
#include <ipc/devman.h>
#include <devman.h>
#include <device/char.h>
#include <str.h>
#include <ipc/serial_ctl.h>

#define NAME            "test serial"


static void print_usage()
{
        printf("Usage: \n test_serial count \n where count is the number of characters to be read\n");  
}

int main(int argc, char *argv[])
{
        if (argc != 2) {
                printf(NAME ": incorrect number of arguments.\n");
                print_usage();
                return 0;               
        }
        
        long int cnt = strtol(argv[1], NULL, 10);
        
        int res;
        res = devman_get_phone(DEVMAN_CLIENT, IPC_FLAG_BLOCKING);
        device_handle_t handle;
        
        if (EOK != (res = devman_device_get_handle("/hw/pci0/00:01.0/com1", &handle, IPC_FLAG_BLOCKING))) {
                printf(NAME ": could not get the device handle, errno = %d.\n", -res);
                return 1;
        }
        
        printf(NAME ": trying to read %d characters from device with handle %d.\n", cnt, handle);       
        
        int phone;
        if (0 >= (phone = devman_device_connect(handle, IPC_FLAG_BLOCKING))) {
                printf(NAME ": could not connect to the device, errno = %d.\n", -res);
                devman_hangup_phone(DEVMAN_CLIENT);             
                return 2;
        }
        
        char *buf = (char *)malloc(cnt+1);
        if (NULL == buf) {
                printf(NAME ": failed to allocate the input buffer\n");
                ipc_hangup(phone);
                devman_hangup_phone(DEVMAN_CLIENT);
                return 3;
        }
        
        unsigned int old_baud, old_par, old_stop, old_word_size;
        
        res = ipc_call_sync_0_4(phone, SERIAL_GET_COM_PROPS, &old_baud, &old_par, &old_word_size, &old_stop);   
        if (EOK != res) {
                printf(NAME ": failed to get old communication parameters, errno = %d.\n", -res);
                devman_hangup_phone(DEVMAN_CLIENT);
                ipc_hangup(phone);
                free(buf);
                return 4;
        }
        
        res = ipc_call_sync_4_0(phone, SERIAL_SET_COM_PROPS, 1200, SERIAL_NO_PARITY, 8, 1);     
        if (EOK != res) {
                printf(NAME ": failed to set communication parameters, errno = %d.\n", -res);
                devman_hangup_phone(DEVMAN_CLIENT);
                ipc_hangup(phone);
                free(buf);
                return 4;
        }
        
        
        int total = 0;
        int read = 0;
        while (total < cnt) {           
                read = read_dev(phone, buf, cnt - total);
                if (0 > read) {
                        printf(NAME ": failed read from device, errno = %d.\n", -read);
                        ipc_call_sync_4_0(phone, SERIAL_SET_COM_PROPS, old_baud, old_par, old_word_size, old_stop);     
                        ipc_hangup(phone);
                        devman_hangup_phone(DEVMAN_CLIENT);
                        free(buf);
                        return 5;
                }               
                total += read;
                if (read > 0) {                 
                        buf[read] = 0;
                        printf(buf);    
                        // write data back to the device to test the opposite direction of data transfer
                        write_dev(phone, buf, read);
                } else {        
                        usleep(100000);                 
                }       
        }
        
        const char *the_end = "\n---------\nTHE END\n---------\n";
        write_dev(phone, (void *)the_end, str_size(the_end));
        
        // restore original communication settings
        ipc_call_sync_4_0(phone, SERIAL_SET_COM_PROPS, old_baud, old_par, old_word_size, old_stop);     
        devman_hangup_phone(DEVMAN_CLIENT);
        ipc_hangup(phone);
        free(buf);
        
        return 0;
}


/** @}
 */