Gan likun / mbed-dev

00

platform/mbed_interface.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:13413ea9a877 3 *
ganlikun 0:13413ea9a877 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:13413ea9a877 5 * you may not use this file except in compliance with the License.
ganlikun 0:13413ea9a877 6 * You may obtain a copy of the License at
ganlikun 0:13413ea9a877 7 *
ganlikun 0:13413ea9a877 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:13413ea9a877 9 *
ganlikun 0:13413ea9a877 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:13413ea9a877 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:13413ea9a877 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:13413ea9a877 13 * See the License for the specific language governing permissions and
ganlikun 0:13413ea9a877 14 * limitations under the License.
ganlikun 0:13413ea9a877 15 */
ganlikun 0:13413ea9a877 16 #include <stdio.h>
ganlikun 0:13413ea9a877 17 #include "platform/mbed_interface.h"
ganlikun 0:13413ea9a877 18
ganlikun 0:13413ea9a877 19 #include "hal/gpio_api.h"
ganlikun 0:13413ea9a877 20 #include "platform/mbed_wait_api.h"
ganlikun 0:13413ea9a877 21 #include "platform/mbed_semihost_api.h"
ganlikun 0:13413ea9a877 22 #include "platform/mbed_error.h"
ganlikun 0:13413ea9a877 23 #include "platform/mbed_toolchain.h"
ganlikun 0:13413ea9a877 24
ganlikun 0:13413ea9a877 25 #if DEVICE_SEMIHOST
ganlikun 0:13413ea9a877 26
ganlikun 0:13413ea9a877 27 // return true if a debugger is attached, indicating mbed interface is connected
ganlikun 0:13413ea9a877 28 int mbed_interface_connected(void) {
ganlikun 0:13413ea9a877 29 return semihost_connected();
ganlikun 0:13413ea9a877 30 }
ganlikun 0:13413ea9a877 31
ganlikun 0:13413ea9a877 32 int mbed_interface_reset(void) {
ganlikun 0:13413ea9a877 33 if (mbed_interface_connected()) {
ganlikun 0:13413ea9a877 34 semihost_reset();
ganlikun 0:13413ea9a877 35 return 0;
ganlikun 0:13413ea9a877 36 } else {
ganlikun 0:13413ea9a877 37 return -1;
ganlikun 0:13413ea9a877 38 }
ganlikun 0:13413ea9a877 39 }
ganlikun 0:13413ea9a877 40
ganlikun 0:13413ea9a877 41 WEAK int mbed_interface_uid(char *uid) {
ganlikun 0:13413ea9a877 42 if (mbed_interface_connected()) {
ganlikun 0:13413ea9a877 43 return semihost_uid(uid); // Returns 0 if successful, -1 on failure
ganlikun 0:13413ea9a877 44 } else {
ganlikun 0:13413ea9a877 45 uid[0] = 0;
ganlikun 0:13413ea9a877 46 return -1;
ganlikun 0:13413ea9a877 47 }
ganlikun 0:13413ea9a877 48 }
ganlikun 0:13413ea9a877 49
ganlikun 0:13413ea9a877 50 int mbed_interface_disconnect(void) {
ganlikun 0:13413ea9a877 51 int res;
ganlikun 0:13413ea9a877 52 if (mbed_interface_connected()) {
ganlikun 0:13413ea9a877 53 if ((res = semihost_disabledebug()) != 0)
ganlikun 0:13413ea9a877 54 return res;
ganlikun 0:13413ea9a877 55 while (mbed_interface_connected());
ganlikun 0:13413ea9a877 56 return 0;
ganlikun 0:13413ea9a877 57 } else {
ganlikun 0:13413ea9a877 58 return -1;
ganlikun 0:13413ea9a877 59 }
ganlikun 0:13413ea9a877 60 }
ganlikun 0:13413ea9a877 61
ganlikun 0:13413ea9a877 62 int mbed_interface_powerdown(void) {
ganlikun 0:13413ea9a877 63 int res;
ganlikun 0:13413ea9a877 64 if (mbed_interface_connected()) {
ganlikun 0:13413ea9a877 65 if ((res = semihost_powerdown()) != 0)
ganlikun 0:13413ea9a877 66 return res;
ganlikun 0:13413ea9a877 67 while (mbed_interface_connected());
ganlikun 0:13413ea9a877 68 return 0;
ganlikun 0:13413ea9a877 69 } else {
ganlikun 0:13413ea9a877 70 return -1;
ganlikun 0:13413ea9a877 71 }
ganlikun 0:13413ea9a877 72 }
ganlikun 0:13413ea9a877 73
ganlikun 0:13413ea9a877 74 // for backward compatibility
ganlikun 0:13413ea9a877 75 void mbed_reset(void) {
ganlikun 0:13413ea9a877 76 mbed_interface_reset();
ganlikun 0:13413ea9a877 77 }
ganlikun 0:13413ea9a877 78
ganlikun 0:13413ea9a877 79 WEAK int mbed_uid(char *uid) {
ganlikun 0:13413ea9a877 80 return mbed_interface_uid(uid);
ganlikun 0:13413ea9a877 81 }
ganlikun 0:13413ea9a877 82 #endif
ganlikun 0:13413ea9a877 83
ganlikun 0:13413ea9a877 84 WEAK void mbed_mac_address(char *mac) {
ganlikun 0:13413ea9a877 85 #if DEVICE_SEMIHOST
ganlikun 0:13413ea9a877 86 char uid[DEVICE_ID_LENGTH + 1];
ganlikun 0:13413ea9a877 87 int i;
ganlikun 0:13413ea9a877 88
ganlikun 0:13413ea9a877 89 // if we have a UID, extract the MAC
ganlikun 0:13413ea9a877 90 if (mbed_interface_uid(uid) == 0) {
ganlikun 0:13413ea9a877 91 char *p = uid;
ganlikun 0:13413ea9a877 92 #if defined(DEVICE_MAC_OFFSET)
ganlikun 0:13413ea9a877 93 p += DEVICE_MAC_OFFSET;
ganlikun 0:13413ea9a877 94 #endif
ganlikun 0:13413ea9a877 95 for (i=0; i<6; i++) {
ganlikun 0:13413ea9a877 96 int byte;
ganlikun 0:13413ea9a877 97 sscanf(p, "%2x", &byte);
ganlikun 0:13413ea9a877 98 mac[i] = byte;
ganlikun 0:13413ea9a877 99 p += 2;
ganlikun 0:13413ea9a877 100 }
ganlikun 0:13413ea9a877 101 mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
ganlikun 0:13413ea9a877 102 } else { // else return a default MAC
ganlikun 0:13413ea9a877 103 #endif
ganlikun 0:13413ea9a877 104 mac[0] = 0x00;
ganlikun 0:13413ea9a877 105 mac[1] = 0x02;
ganlikun 0:13413ea9a877 106 mac[2] = 0xF7;
ganlikun 0:13413ea9a877 107 mac[3] = 0xF0;
ganlikun 0:13413ea9a877 108 mac[4] = 0x00;
ganlikun 0:13413ea9a877 109 mac[5] = 0x00;
ganlikun 0:13413ea9a877 110 #if DEVICE_SEMIHOST
ganlikun 0:13413ea9a877 111 }
ganlikun 0:13413ea9a877 112 #endif
ganlikun 0:13413ea9a877 113 }
ganlikun 0:13413ea9a877 114