mbed SDK library sources

Fork of mbed-src by mbed official

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

common/mbed_interface.c

Committer:
mbed_official
Date:
2014-02-11
Revision:
89:9655231f5786
Parent:
13:0645d8841f51

File content as of revision 89:9655231f5786:

/* mbed Microcontroller Library
 * Copyright (c) 2006-2013 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <stdio.h>
#include "mbed_interface.h"

#include "gpio_api.h"
#include "wait_api.h"
#include "semihost_api.h"
#include "error.h"
#include "toolchain.h"

#if DEVICE_SEMIHOST

// return true if a debugger is attached, indicating mbed interface is connected
int mbed_interface_connected(void) {
    return semihost_connected();
}

int mbed_interface_reset(void) {
    if (mbed_interface_connected()) {
        semihost_reset();
        return 0;
    } else {
        return -1;
    }
}

WEAK int mbed_interface_uid(char *uid);
WEAK int mbed_interface_uid(char *uid) {
    if (mbed_interface_connected()) {
        return semihost_uid(uid); // Returns 0 if successful, -1 on failure
    } else {
        uid[0] = 0;
        return -1;
    }
}

int mbed_interface_disconnect(void) {
    int res;
    if (mbed_interface_connected()) {
        if ((res = semihost_disabledebug()) != 0)
            return res;
        while (mbed_interface_connected());
        return 0;
    } else {
        return -1;
    }
}

int mbed_interface_powerdown(void) {
    int res;
    if (mbed_interface_connected()) {
        if ((res = semihost_powerdown()) != 0)
            return res;
        while (mbed_interface_connected());
        return 0;
    } else {
        return -1;
    }
}

// for backward compatibility
void mbed_reset(void) {
    mbed_interface_reset();
}

WEAK int mbed_uid(char *uid);
WEAK int mbed_uid(char *uid) {
    return mbed_interface_uid(uid);
}
#endif

WEAK void mbed_mac_address(char *mac);
WEAK void mbed_mac_address(char *mac) {
#if DEVICE_SEMIHOST
    char uid[DEVICE_ID_LENGTH + 1];
    int i;
    
    // if we have a UID, extract the MAC
    if (mbed_interface_uid(uid) == 0) {
        char *p = uid;
#if defined(DEVICE_MAC_OFFSET)
        p += DEVICE_MAC_OFFSET;
#endif
        for (i=0; i<6; i++) {
            int byte;
            sscanf(p, "%2x", &byte);
            mac[i] = byte;
            p += 2;
        }
    } else {  // else return a default MAC
#endif
        mac[0] = 0x00;
        mac[1] = 0x02;
        mac[2] = 0xF7;
        mac[3] = 0xF0;
        mac[4] = 0x00;
        mac[5] = 0x00;
#if DEVICE_SEMIHOST
    }
#endif
}