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mbed-dev/platform/mbed_interface.c@2:5acdd8565d02, 2017-02-25 (annotated)

Committer:
elmot
Date:
Sat Feb 25 00:23:53 2017 +0000
Revision:
2:5acdd8565d02
Parent:
1:d0dfbce63a89 
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UserRevisionLine numberNew contents of line
elmot 1:d0dfbce63a89 1 /* mbed Microcontroller Library
elmot 1:d0dfbce63a89 2 * Copyright (c) 2006-2013 ARM Limited
elmot 1:d0dfbce63a89 3 *
elmot 1:d0dfbce63a89 4 * Licensed under the Apache License, Version 2.0 (the "License");
elmot 1:d0dfbce63a89 5 * you may not use this file except in compliance with the License.
elmot 1:d0dfbce63a89 6 * You may obtain a copy of the License at
elmot 1:d0dfbce63a89 7 *
elmot 1:d0dfbce63a89 8 * http://www.apache.org/licenses/LICENSE-2.0
elmot 1:d0dfbce63a89 9 *
elmot 1:d0dfbce63a89 10 * Unless required by applicable law or agreed to in writing, software
elmot 1:d0dfbce63a89 11 * distributed under the License is distributed on an "AS IS" BASIS,
elmot 1:d0dfbce63a89 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elmot 1:d0dfbce63a89 13 * See the License for the specific language governing permissions and
elmot 1:d0dfbce63a89 14 * limitations under the License.
elmot 1:d0dfbce63a89 15 */
elmot 1:d0dfbce63a89 16 #include <stdio.h>
elmot 1:d0dfbce63a89 17 #include "platform/mbed_interface.h"
elmot 1:d0dfbce63a89 18
elmot 1:d0dfbce63a89 19 #include "hal/gpio_api.h"
elmot 1:d0dfbce63a89 20 #include "platform/wait_api.h"
elmot 1:d0dfbce63a89 21 #include "platform/semihost_api.h"
elmot 1:d0dfbce63a89 22 #include "platform/mbed_error.h"
elmot 1:d0dfbce63a89 23 #include "platform/toolchain.h"
elmot 1:d0dfbce63a89 24
elmot 1:d0dfbce63a89 25 #if DEVICE_SEMIHOST
elmot 1:d0dfbce63a89 26
elmot 1:d0dfbce63a89 27 // return true if a debugger is attached, indicating mbed interface is connected
elmot 1:d0dfbce63a89 28 int mbed_interface_connected(void) {
elmot 1:d0dfbce63a89 29 return semihost_connected();
elmot 1:d0dfbce63a89 30 }
elmot 1:d0dfbce63a89 31
elmot 1:d0dfbce63a89 32 int mbed_interface_reset(void) {
elmot 1:d0dfbce63a89 33 if (mbed_interface_connected()) {
elmot 1:d0dfbce63a89 34 semihost_reset();
elmot 1:d0dfbce63a89 35 return 0;
elmot 1:d0dfbce63a89 36 } else {
elmot 1:d0dfbce63a89 37 return -1;
elmot 1:d0dfbce63a89 38 }
elmot 1:d0dfbce63a89 39 }
elmot 1:d0dfbce63a89 40
elmot 1:d0dfbce63a89 41 WEAK int mbed_interface_uid(char *uid) {
elmot 1:d0dfbce63a89 42 if (mbed_interface_connected()) {
elmot 1:d0dfbce63a89 43 return semihost_uid(uid); // Returns 0 if successful, -1 on failure
elmot 1:d0dfbce63a89 44 } else {
elmot 1:d0dfbce63a89 45 uid[0] = 0;
elmot 1:d0dfbce63a89 46 return -1;
elmot 1:d0dfbce63a89 47 }
elmot 1:d0dfbce63a89 48 }
elmot 1:d0dfbce63a89 49
elmot 1:d0dfbce63a89 50 int mbed_interface_disconnect(void) {
elmot 1:d0dfbce63a89 51 int res;
elmot 1:d0dfbce63a89 52 if (mbed_interface_connected()) {
elmot 1:d0dfbce63a89 53 if ((res = semihost_disabledebug()) != 0)
elmot 1:d0dfbce63a89 54 return res;
elmot 1:d0dfbce63a89 55 while (mbed_interface_connected());
elmot 1:d0dfbce63a89 56 return 0;
elmot 1:d0dfbce63a89 57 } else {
elmot 1:d0dfbce63a89 58 return -1;
elmot 1:d0dfbce63a89 59 }
elmot 1:d0dfbce63a89 60 }
elmot 1:d0dfbce63a89 61
elmot 1:d0dfbce63a89 62 int mbed_interface_powerdown(void) {
elmot 1:d0dfbce63a89 63 int res;
elmot 1:d0dfbce63a89 64 if (mbed_interface_connected()) {
elmot 1:d0dfbce63a89 65 if ((res = semihost_powerdown()) != 0)
elmot 1:d0dfbce63a89 66 return res;
elmot 1:d0dfbce63a89 67 while (mbed_interface_connected());
elmot 1:d0dfbce63a89 68 return 0;
elmot 1:d0dfbce63a89 69 } else {
elmot 1:d0dfbce63a89 70 return -1;
elmot 1:d0dfbce63a89 71 }
elmot 1:d0dfbce63a89 72 }
elmot 1:d0dfbce63a89 73
elmot 1:d0dfbce63a89 74 // for backward compatibility
elmot 1:d0dfbce63a89 75 void mbed_reset(void) {
elmot 1:d0dfbce63a89 76 mbed_interface_reset();
elmot 1:d0dfbce63a89 77 }
elmot 1:d0dfbce63a89 78
elmot 1:d0dfbce63a89 79 WEAK int mbed_uid(char *uid) {
elmot 1:d0dfbce63a89 80 return mbed_interface_uid(uid);
elmot 1:d0dfbce63a89 81 }
elmot 1:d0dfbce63a89 82 #endif
elmot 1:d0dfbce63a89 83
elmot 1:d0dfbce63a89 84 WEAK void mbed_mac_address(char *mac) {
elmot 1:d0dfbce63a89 85 #if DEVICE_SEMIHOST
elmot 1:d0dfbce63a89 86 char uid[DEVICE_ID_LENGTH + 1];
elmot 1:d0dfbce63a89 87 int i;
elmot 1:d0dfbce63a89 88
elmot 1:d0dfbce63a89 89 // if we have a UID, extract the MAC
elmot 1:d0dfbce63a89 90 if (mbed_interface_uid(uid) == 0) {
elmot 1:d0dfbce63a89 91 char *p = uid;
elmot 1:d0dfbce63a89 92 #if defined(DEVICE_MAC_OFFSET)
elmot 1:d0dfbce63a89 93 p += DEVICE_MAC_OFFSET;
elmot 1:d0dfbce63a89 94 #endif
elmot 1:d0dfbce63a89 95 for (i=0; i<6; i++) {
elmot 1:d0dfbce63a89 96 int byte;
elmot 1:d0dfbce63a89 97 sscanf(p, "%2x", &byte);
elmot 1:d0dfbce63a89 98 mac[i] = byte;
elmot 1:d0dfbce63a89 99 p += 2;
elmot 1:d0dfbce63a89 100 }
elmot 1:d0dfbce63a89 101 mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
elmot 1:d0dfbce63a89 102 } else { // else return a default MAC
elmot 1:d0dfbce63a89 103 #endif
elmot 1:d0dfbce63a89 104 mac[0] = 0x00;
elmot 1:d0dfbce63a89 105 mac[1] = 0x02;
elmot 1:d0dfbce63a89 106 mac[2] = 0xF7;
elmot 1:d0dfbce63a89 107 mac[3] = 0xF0;
elmot 1:d0dfbce63a89 108 mac[4] = 0x00;
elmot 1:d0dfbce63a89 109 mac[5] = 0x00;
elmot 1:d0dfbce63a89 110 #if DEVICE_SEMIHOST
elmot 1:d0dfbce63a89 111 }
elmot 1:d0dfbce63a89 112 #endif
elmot 1:d0dfbce63a89 113 }