[270] | 1 | /* mbed Microcontroller Library
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| 2 | * Copyright (c) 2006-2013 ARM Limited
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | #include <stdio.h>
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| 17 | #include "mbed_interface.h"
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| 18 |
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| 19 | #include "gpio_api.h"
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| 20 | #include "wait_api.h"
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| 21 | #include "semihost_api.h"
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| 22 | #include "mbed_error.h"
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| 23 | #include "toolchain.h"
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| 24 |
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| 25 | #if DEVICE_SEMIHOST
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| 26 |
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| 27 | // return true if a debugger is attached, indicating mbed interface is connected
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| 28 | int mbed_interface_connected(void) {
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| 29 | return semihost_connected();
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| 30 | }
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| 31 |
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| 32 | int mbed_interface_reset(void) {
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| 33 | if (mbed_interface_connected()) {
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| 34 | semihost_reset();
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| 35 | return 0;
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| 36 | } else {
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| 37 | return -1;
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| 38 | }
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| 39 | }
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| 40 |
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| 41 | WEAK int mbed_interface_uid(char *uid) {
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| 42 | if (mbed_interface_connected()) {
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| 43 | return semihost_uid(uid); // Returns 0 if successful, -1 on failure
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| 44 | } else {
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| 45 | uid[0] = 0;
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| 46 | return -1;
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| 47 | }
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| 48 | }
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| 49 |
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| 50 | int mbed_interface_disconnect(void) {
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| 51 | int res;
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| 52 | if (mbed_interface_connected()) {
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| 53 | if ((res = semihost_disabledebug()) != 0)
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| 54 | return res;
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| 55 | while (mbed_interface_connected());
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| 56 | return 0;
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| 57 | } else {
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| 58 | return -1;
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| 59 | }
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| 60 | }
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| 61 |
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| 62 | int mbed_interface_powerdown(void) {
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| 63 | int res;
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| 64 | if (mbed_interface_connected()) {
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| 65 | if ((res = semihost_powerdown()) != 0)
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| 66 | return res;
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| 67 | while (mbed_interface_connected());
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| 68 | return 0;
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| 69 | } else {
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| 70 | return -1;
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | // for backward compatibility
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| 75 | void mbed_reset(void) {
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| 76 | mbed_interface_reset();
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| 77 | }
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| 78 |
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| 79 | WEAK int mbed_uid(char *uid) {
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| 80 | return mbed_interface_uid(uid);
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| 81 | }
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| 82 | #endif
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| 83 |
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| 84 | WEAK void mbed_mac_address(char *mac) {
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| 85 | #if DEVICE_SEMIHOST
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| 86 | char uid[DEVICE_ID_LENGTH + 1];
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| 87 | int i;
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| 88 |
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| 89 | // if we have a UID, extract the MAC
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| 90 | if (mbed_interface_uid(uid) == 0) {
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| 91 | char *p = uid;
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| 92 | #if defined(DEVICE_MAC_OFFSET)
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| 93 | p += DEVICE_MAC_OFFSET;
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| 94 | #endif
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| 95 | for (i=0; i<6; i++) {
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| 96 | int byte;
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| 97 | sscanf(p, "%2x", &byte);
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| 98 | mac[i] = byte;
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| 99 | p += 2;
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| 100 | }
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| 101 | mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
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| 102 | } else { // else return a default MAC
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| 103 | #endif
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| 104 | mac[0] = 0x00;
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| 105 | mac[1] = 0x02;
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| 106 | mac[2] = 0xF7;
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| 107 | mac[3] = 0xF0;
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| 108 | mac[4] = 0x00;
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| 109 | mac[5] = 0x00;
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| 110 | #if DEVICE_SEMIHOST
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| 111 | }
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| 112 | #endif
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| 113 | }
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