Lancaster University / mbed-src

Lancaster University's (short term!) clone of mbed-src for micro:bit. This is a copy of the github branch https://github.com/lancaster-university/mbed-classic

Fork of mbed-src by mbed official

common/mbed_interface.c@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Parent:
10:3bc89ef62ce7
Child:
221:8276e3a4886f
Update mbed sources to revision 64

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #include <stdio.h>
bogdanm 13:0645d8841f51 17 #include "mbed_interface.h"
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "gpio_api.h"
bogdanm 13:0645d8841f51 20 #include "wait_api.h"
bogdanm 13:0645d8841f51 21 #include "semihost_api.h"
bogdanm 13:0645d8841f51 22 #include "error.h"
bogdanm 13:0645d8841f51 23 #include "toolchain.h"
bogdanm 13:0645d8841f51 24
bogdanm 13:0645d8841f51 25 #if DEVICE_SEMIHOST
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 // return true if a debugger is attached, indicating mbed interface is connected
bogdanm 13:0645d8841f51 28 int mbed_interface_connected(void) {
bogdanm 13:0645d8841f51 29 return semihost_connected();
bogdanm 13:0645d8841f51 30 }
bogdanm 13:0645d8841f51 31
bogdanm 13:0645d8841f51 32 int mbed_interface_reset(void) {
bogdanm 13:0645d8841f51 33 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 34 semihost_reset();
bogdanm 13:0645d8841f51 35 return 0;
bogdanm 13:0645d8841f51 36 } else {
bogdanm 13:0645d8841f51 37 return -1;
bogdanm 13:0645d8841f51 38 }
bogdanm 13:0645d8841f51 39 }
bogdanm 13:0645d8841f51 40
bogdanm 13:0645d8841f51 41 WEAK int mbed_interface_uid(char *uid);
bogdanm 13:0645d8841f51 42 WEAK int mbed_interface_uid(char *uid) {
bogdanm 13:0645d8841f51 43 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 44 return semihost_uid(uid); // Returns 0 if successful, -1 on failure
bogdanm 13:0645d8841f51 45 } else {
bogdanm 13:0645d8841f51 46 uid[0] = 0;
bogdanm 13:0645d8841f51 47 return -1;
bogdanm 13:0645d8841f51 48 }
bogdanm 13:0645d8841f51 49 }
bogdanm 13:0645d8841f51 50
bogdanm 13:0645d8841f51 51 int mbed_interface_disconnect(void) {
bogdanm 13:0645d8841f51 52 int res;
bogdanm 13:0645d8841f51 53 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 54 if ((res = semihost_disabledebug()) != 0)
bogdanm 13:0645d8841f51 55 return res;
bogdanm 13:0645d8841f51 56 while (mbed_interface_connected());
bogdanm 13:0645d8841f51 57 return 0;
bogdanm 13:0645d8841f51 58 } else {
bogdanm 13:0645d8841f51 59 return -1;
bogdanm 13:0645d8841f51 60 }
bogdanm 13:0645d8841f51 61 }
bogdanm 13:0645d8841f51 62
bogdanm 13:0645d8841f51 63 int mbed_interface_powerdown(void) {
bogdanm 13:0645d8841f51 64 int res;
bogdanm 13:0645d8841f51 65 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 66 if ((res = semihost_powerdown()) != 0)
bogdanm 13:0645d8841f51 67 return res;
bogdanm 13:0645d8841f51 68 while (mbed_interface_connected());
bogdanm 13:0645d8841f51 69 return 0;
bogdanm 13:0645d8841f51 70 } else {
bogdanm 13:0645d8841f51 71 return -1;
bogdanm 13:0645d8841f51 72 }
bogdanm 13:0645d8841f51 73 }
bogdanm 13:0645d8841f51 74
bogdanm 13:0645d8841f51 75 // for backward compatibility
bogdanm 13:0645d8841f51 76 void mbed_reset(void) {
bogdanm 13:0645d8841f51 77 mbed_interface_reset();
bogdanm 13:0645d8841f51 78 }
bogdanm 13:0645d8841f51 79
bogdanm 13:0645d8841f51 80 WEAK int mbed_uid(char *uid);
bogdanm 13:0645d8841f51 81 WEAK int mbed_uid(char *uid) {
bogdanm 13:0645d8841f51 82 return mbed_interface_uid(uid);
bogdanm 13:0645d8841f51 83 }
bogdanm 13:0645d8841f51 84 #endif
bogdanm 13:0645d8841f51 85
bogdanm 13:0645d8841f51 86 WEAK void mbed_mac_address(char *mac);
bogdanm 13:0645d8841f51 87 WEAK void mbed_mac_address(char *mac) {
bogdanm 13:0645d8841f51 88 #if DEVICE_SEMIHOST
bogdanm 13:0645d8841f51 89 char uid[DEVICE_ID_LENGTH + 1];
bogdanm 13:0645d8841f51 90 int i;
bogdanm 13:0645d8841f51 91
bogdanm 13:0645d8841f51 92 // if we have a UID, extract the MAC
bogdanm 13:0645d8841f51 93 if (mbed_interface_uid(uid) == 0) {
bogdanm 13:0645d8841f51 94 char *p = uid;
bogdanm 13:0645d8841f51 95 #if defined(DEVICE_MAC_OFFSET)
bogdanm 13:0645d8841f51 96 p += DEVICE_MAC_OFFSET;
bogdanm 13:0645d8841f51 97 #endif
bogdanm 13:0645d8841f51 98 for (i=0; i<6; i++) {
bogdanm 13:0645d8841f51 99 int byte;
bogdanm 13:0645d8841f51 100 sscanf(p, "%2x", &byte);
bogdanm 13:0645d8841f51 101 mac[i] = byte;
bogdanm 13:0645d8841f51 102 p += 2;
bogdanm 13:0645d8841f51 103 }
bogdanm 13:0645d8841f51 104 } else { // else return a default MAC
bogdanm 13:0645d8841f51 105 #endif
bogdanm 13:0645d8841f51 106 mac[0] = 0x00;
bogdanm 13:0645d8841f51 107 mac[1] = 0x02;
bogdanm 13:0645d8841f51 108 mac[2] = 0xF7;
bogdanm 13:0645d8841f51 109 mac[3] = 0xF0;
bogdanm 13:0645d8841f51 110 mac[4] = 0x00;
bogdanm 13:0645d8841f51 111 mac[5] = 0x00;
bogdanm 13:0645d8841f51 112 #if DEVICE_SEMIHOST
bogdanm 13:0645d8841f51 113 }
bogdanm 13:0645d8841f51 114 #endif
bogdanm 13:0645d8841f51 115 }