Fawwaz Nadzmy / mbed-src

mbed library sources

Fork of mbed-src by mbed official

common/mbed_interface.c@636:de8f3520e5c1, 2016-12-21 (annotated)

Committer:
fwndz
Date:
Wed Dec 21 12:47:52 2016 +0000
Revision:
636:de8f3520e5c1
Parent:
395:bfce16e86ea4 
init

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"
mbed_official 285:31249416b6f9 22 #include "mbed_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 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 43 return semihost_uid(uid); // Returns 0 if successful, -1 on failure
bogdanm 13:0645d8841f51 44 } else {
bogdanm 13:0645d8841f51 45 uid[0] = 0;
bogdanm 13:0645d8841f51 46 return -1;
bogdanm 13:0645d8841f51 47 }
bogdanm 13:0645d8841f51 48 }
bogdanm 13:0645d8841f51 49
bogdanm 13:0645d8841f51 50 int mbed_interface_disconnect(void) {
bogdanm 13:0645d8841f51 51 int res;
bogdanm 13:0645d8841f51 52 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 53 if ((res = semihost_disabledebug()) != 0)
bogdanm 13:0645d8841f51 54 return res;
bogdanm 13:0645d8841f51 55 while (mbed_interface_connected());
bogdanm 13:0645d8841f51 56 return 0;
bogdanm 13:0645d8841f51 57 } else {
bogdanm 13:0645d8841f51 58 return -1;
bogdanm 13:0645d8841f51 59 }
bogdanm 13:0645d8841f51 60 }
bogdanm 13:0645d8841f51 61
bogdanm 13:0645d8841f51 62 int mbed_interface_powerdown(void) {
bogdanm 13:0645d8841f51 63 int res;
bogdanm 13:0645d8841f51 64 if (mbed_interface_connected()) {
bogdanm 13:0645d8841f51 65 if ((res = semihost_powerdown()) != 0)
bogdanm 13:0645d8841f51 66 return res;
bogdanm 13:0645d8841f51 67 while (mbed_interface_connected());
bogdanm 13:0645d8841f51 68 return 0;
bogdanm 13:0645d8841f51 69 } else {
bogdanm 13:0645d8841f51 70 return -1;
bogdanm 13:0645d8841f51 71 }
bogdanm 13:0645d8841f51 72 }
bogdanm 13:0645d8841f51 73
bogdanm 13:0645d8841f51 74 // for backward compatibility
bogdanm 13:0645d8841f51 75 void mbed_reset(void) {
bogdanm 13:0645d8841f51 76 mbed_interface_reset();
bogdanm 13:0645d8841f51 77 }
bogdanm 13:0645d8841f51 78
bogdanm 13:0645d8841f51 79 WEAK int mbed_uid(char *uid) {
bogdanm 13:0645d8841f51 80 return mbed_interface_uid(uid);
bogdanm 13:0645d8841f51 81 }
bogdanm 13:0645d8841f51 82 #endif
bogdanm 13:0645d8841f51 83
bogdanm 13:0645d8841f51 84 WEAK void mbed_mac_address(char *mac) {
bogdanm 13:0645d8841f51 85 #if DEVICE_SEMIHOST
bogdanm 13:0645d8841f51 86 char uid[DEVICE_ID_LENGTH + 1];
bogdanm 13:0645d8841f51 87 int i;
mbed_official 221:8276e3a4886f 88
bogdanm 13:0645d8841f51 89 // if we have a UID, extract the MAC
bogdanm 13:0645d8841f51 90 if (mbed_interface_uid(uid) == 0) {
bogdanm 13:0645d8841f51 91 char *p = uid;
bogdanm 13:0645d8841f51 92 #if defined(DEVICE_MAC_OFFSET)
bogdanm 13:0645d8841f51 93 p += DEVICE_MAC_OFFSET;
bogdanm 13:0645d8841f51 94 #endif
bogdanm 13:0645d8841f51 95 for (i=0; i<6; i++) {
bogdanm 13:0645d8841f51 96 int byte;
bogdanm 13:0645d8841f51 97 sscanf(p, "%2x", &byte);
bogdanm 13:0645d8841f51 98 mac[i] = byte;
bogdanm 13:0645d8841f51 99 p += 2;
bogdanm 13:0645d8841f51 100 }
mbed_official 395:bfce16e86ea4 101 mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
bogdanm 13:0645d8841f51 102 } else { // else return a default MAC
bogdanm 13:0645d8841f51 103 #endif
bogdanm 13:0645d8841f51 104 mac[0] = 0x00;
bogdanm 13:0645d8841f51 105 mac[1] = 0x02;
bogdanm 13:0645d8841f51 106 mac[2] = 0xF7;
bogdanm 13:0645d8841f51 107 mac[3] = 0xF0;
bogdanm 13:0645d8841f51 108 mac[4] = 0x00;
bogdanm 13:0645d8841f51 109 mac[5] = 0x00;
bogdanm 13:0645d8841f51 110 #if DEVICE_SEMIHOST
bogdanm 13:0645d8841f51 111 }
bogdanm 13:0645d8841f51 112 #endif
bogdanm 13:0645d8841f51 113 }