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 "platform/mbed_interface.h"
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18 |
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19 | #include "hal/gpio_api.h"
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20 | #include "platform/mbed_wait_api.h"
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21 | #include "platform/mbed_semihost_api.h"
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22 | #include "platform/mbed_error.h"
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23 | #include "platform/mbed_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 | {
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30 | return semihost_connected();
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31 | }
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32 |
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33 | int mbed_interface_reset(void)
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34 | {
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35 | if (mbed_interface_connected()) {
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36 | semihost_reset();
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37 | return 0;
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38 | } else {
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39 | return -1;
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40 | }
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41 | }
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42 |
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43 | WEAK int mbed_interface_uid(char *uid)
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44 | {
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45 | if (mbed_interface_connected()) {
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46 | return semihost_uid(uid); // Returns 0 if successful, -1 on failure
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47 | } else {
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48 | uid[0] = 0;
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49 | return -1;
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50 | }
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51 | }
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52 |
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53 | int mbed_interface_disconnect(void)
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54 | {
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55 | int res;
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56 | if (mbed_interface_connected()) {
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57 | if ((res = semihost_disabledebug()) != 0) {
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58 | return res;
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59 | }
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60 | while (mbed_interface_connected());
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61 | return 0;
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62 | } else {
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63 | return -1;
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64 | }
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65 | }
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66 |
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67 | int mbed_interface_powerdown(void)
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68 | {
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69 | int res;
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70 | if (mbed_interface_connected()) {
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71 | if ((res = semihost_powerdown()) != 0) {
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72 | return res;
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73 | }
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74 | while (mbed_interface_connected());
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75 | return 0;
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76 | } else {
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77 | return -1;
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78 | }
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79 | }
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80 |
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81 | MBED_DEPRECATED_SINCE("mbed-os-5.9", "This function shouldn't be used in new code."
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82 | "For system reset funcionality use system_reset()")
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83 | void mbed_reset(void)
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84 | {
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85 | mbed_interface_reset();
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86 | }
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87 |
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88 | WEAK int mbed_uid(char *uid)
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89 | {
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90 | return mbed_interface_uid(uid);
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91 | }
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92 | #endif
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93 |
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94 | WEAK void mbed_mac_address(char *mac)
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95 | {
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96 | #if DEVICE_SEMIHOST
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97 | char uid[DEVICE_ID_LENGTH + 1];
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98 | int i;
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99 |
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100 | // if we have a UID, extract the MAC
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101 | if (mbed_interface_uid(uid) == 0) {
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102 | char *p = uid;
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103 | #if defined(DEVICE_MAC_OFFSET)
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104 | p += DEVICE_MAC_OFFSET;
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105 | #endif
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106 | for (i=0; i<6; i++) {
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107 | int byte;
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108 | sscanf(p, "%2x", &byte);
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109 | mac[i] = byte;
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110 | p += 2;
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111 | }
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112 | mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
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113 | } else { // else return a default MAC
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114 | #endif
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115 | mac[0] = 0x00;
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116 | mac[1] = 0x02;
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117 | mac[2] = 0xF7;
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118 | mac[3] = 0xF0;
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119 | mac[4] = 0x00;
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120 | mac[5] = 0x00;
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121 | #if DEVICE_SEMIHOST
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122 | }
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123 | #endif
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124 | }
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