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/* 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 "mbed_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) {
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) {
return mbed_interface_uid(uid);
}
#endif
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;
}
mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
} 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
}
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