zhang boie / mbed-dev-f30333

platform/mbed_interface.c@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

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abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2013 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include <stdio.h>
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17 #include "platform/mbed_interface.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19 #include "hal/gpio_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20 #include "platform/mbed_wait_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21 #include "platform/mbed_semihost_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22 #include "platform/mbed_error.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 #include "platform/mbed_toolchain.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 #if DEVICE_SEMIHOST
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 // return true if a debugger is attached, indicating mbed interface is connected
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 int mbed_interface_connected(void) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 return semihost_connected();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32 int mbed_interface_reset(void) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33 if (mbed_interface_connected()) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34 semihost_reset();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37 return -1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 WEAK int mbed_interface_uid(char *uid) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42 if (mbed_interface_connected()) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 43 return semihost_uid(uid); // Returns 0 if successful, -1 on failure
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 44 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 45 uid[0] = 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 46 return -1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 47 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 48 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 49
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 50 int mbed_interface_disconnect(void) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 51 int res;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 52 if (mbed_interface_connected()) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 53 if ((res = semihost_disabledebug()) != 0)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 54 return res;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 55 while (mbed_interface_connected());
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 56 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 57 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 58 return -1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 59 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 60 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 61
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 62 int mbed_interface_powerdown(void) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 63 int res;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 64 if (mbed_interface_connected()) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 65 if ((res = semihost_powerdown()) != 0)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 66 return res;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 67 while (mbed_interface_connected());
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 68 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 69 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 70 return -1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 71 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 72 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 73
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 74 // for backward compatibility
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 75 void mbed_reset(void) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 76 mbed_interface_reset();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 77 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 78
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 79 WEAK int mbed_uid(char *uid) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 80 return mbed_interface_uid(uid);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 81 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 82 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 83
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 84 WEAK void mbed_mac_address(char *mac) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 85 #if DEVICE_SEMIHOST
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 86 char uid[DEVICE_ID_LENGTH + 1];
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 87 int i;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 88
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 89 // if we have a UID, extract the MAC
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 90 if (mbed_interface_uid(uid) == 0) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 91 char *p = uid;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 92 #if defined(DEVICE_MAC_OFFSET)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 93 p += DEVICE_MAC_OFFSET;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 94 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 95 for (i=0; i<6; i++) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 96 int byte;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 97 sscanf(p, "%2x", &byte);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 98 mac[i] = byte;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 99 p += 2;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 100 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 101 mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 102 } else { // else return a default MAC
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 103 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 104 mac[0] = 0x00;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 105 mac[1] = 0x02;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 106 mac[2] = 0xF7;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 107 mac[3] = 0xF0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 108 mac[4] = 0x00;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 109 mac[5] = 0x00;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 110 #if DEVICE_SEMIHOST
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 111 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 112 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 113 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 114