Steven Wray / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

common/mbed_interface.c@148:e70627d019e9, 2016-09-28 (annotated)

Committer:
StevieWray
Date:
Wed Sep 28 08:45:18 2016 +0000
Revision:
148:e70627d019e9
Parent:
144:ef7eb2e8f9f7 
Fixed DAC output on STM32F3 boards to allow 3 outputs

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include <stdio.h>
<> 144:ef7eb2e8f9f7 17 #include "mbed_interface.h"
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 20 #include "wait_api.h"
<> 144:ef7eb2e8f9f7 21 #include "semihost_api.h"
<> 144:ef7eb2e8f9f7 22 #include "mbed_error.h"
<> 144:ef7eb2e8f9f7 23 #include "toolchain.h"
<> 144:ef7eb2e8f9f7 24
<> 144:ef7eb2e8f9f7 25 #if DEVICE_SEMIHOST
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 // return true if a debugger is attached, indicating mbed interface is connected
<> 144:ef7eb2e8f9f7 28 int mbed_interface_connected(void) {
<> 144:ef7eb2e8f9f7 29 return semihost_connected();
<> 144:ef7eb2e8f9f7 30 }
<> 144:ef7eb2e8f9f7 31
<> 144:ef7eb2e8f9f7 32 int mbed_interface_reset(void) {
<> 144:ef7eb2e8f9f7 33 if (mbed_interface_connected()) {
<> 144:ef7eb2e8f9f7 34 semihost_reset();
<> 144:ef7eb2e8f9f7 35 return 0;
<> 144:ef7eb2e8f9f7 36 } else {
<> 144:ef7eb2e8f9f7 37 return -1;
<> 144:ef7eb2e8f9f7 38 }
<> 144:ef7eb2e8f9f7 39 }
<> 144:ef7eb2e8f9f7 40
<> 144:ef7eb2e8f9f7 41 WEAK int mbed_interface_uid(char *uid) {
<> 144:ef7eb2e8f9f7 42 if (mbed_interface_connected()) {
<> 144:ef7eb2e8f9f7 43 return semihost_uid(uid); // Returns 0 if successful, -1 on failure
<> 144:ef7eb2e8f9f7 44 } else {
<> 144:ef7eb2e8f9f7 45 uid[0] = 0;
<> 144:ef7eb2e8f9f7 46 return -1;
<> 144:ef7eb2e8f9f7 47 }
<> 144:ef7eb2e8f9f7 48 }
<> 144:ef7eb2e8f9f7 49
<> 144:ef7eb2e8f9f7 50 int mbed_interface_disconnect(void) {
<> 144:ef7eb2e8f9f7 51 int res;
<> 144:ef7eb2e8f9f7 52 if (mbed_interface_connected()) {
<> 144:ef7eb2e8f9f7 53 if ((res = semihost_disabledebug()) != 0)
<> 144:ef7eb2e8f9f7 54 return res;
<> 144:ef7eb2e8f9f7 55 while (mbed_interface_connected());
<> 144:ef7eb2e8f9f7 56 return 0;
<> 144:ef7eb2e8f9f7 57 } else {
<> 144:ef7eb2e8f9f7 58 return -1;
<> 144:ef7eb2e8f9f7 59 }
<> 144:ef7eb2e8f9f7 60 }
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 int mbed_interface_powerdown(void) {
<> 144:ef7eb2e8f9f7 63 int res;
<> 144:ef7eb2e8f9f7 64 if (mbed_interface_connected()) {
<> 144:ef7eb2e8f9f7 65 if ((res = semihost_powerdown()) != 0)
<> 144:ef7eb2e8f9f7 66 return res;
<> 144:ef7eb2e8f9f7 67 while (mbed_interface_connected());
<> 144:ef7eb2e8f9f7 68 return 0;
<> 144:ef7eb2e8f9f7 69 } else {
<> 144:ef7eb2e8f9f7 70 return -1;
<> 144:ef7eb2e8f9f7 71 }
<> 144:ef7eb2e8f9f7 72 }
<> 144:ef7eb2e8f9f7 73
<> 144:ef7eb2e8f9f7 74 // for backward compatibility
<> 144:ef7eb2e8f9f7 75 void mbed_reset(void) {
<> 144:ef7eb2e8f9f7 76 mbed_interface_reset();
<> 144:ef7eb2e8f9f7 77 }
<> 144:ef7eb2e8f9f7 78
<> 144:ef7eb2e8f9f7 79 WEAK int mbed_uid(char *uid) {
<> 144:ef7eb2e8f9f7 80 return mbed_interface_uid(uid);
<> 144:ef7eb2e8f9f7 81 }
<> 144:ef7eb2e8f9f7 82 #endif
<> 144:ef7eb2e8f9f7 83
<> 144:ef7eb2e8f9f7 84 WEAK void mbed_mac_address(char *mac) {
<> 144:ef7eb2e8f9f7 85 #if DEVICE_SEMIHOST
<> 144:ef7eb2e8f9f7 86 char uid[DEVICE_ID_LENGTH + 1];
<> 144:ef7eb2e8f9f7 87 int i;
<> 144:ef7eb2e8f9f7 88
<> 144:ef7eb2e8f9f7 89 // if we have a UID, extract the MAC
<> 144:ef7eb2e8f9f7 90 if (mbed_interface_uid(uid) == 0) {
<> 144:ef7eb2e8f9f7 91 char *p = uid;
<> 144:ef7eb2e8f9f7 92 #if defined(DEVICE_MAC_OFFSET)
<> 144:ef7eb2e8f9f7 93 p += DEVICE_MAC_OFFSET;
<> 144:ef7eb2e8f9f7 94 #endif
<> 144:ef7eb2e8f9f7 95 for (i=0; i<6; i++) {
<> 144:ef7eb2e8f9f7 96 int byte;
<> 144:ef7eb2e8f9f7 97 sscanf(p, "%2x", &byte);
<> 144:ef7eb2e8f9f7 98 mac[i] = byte;
<> 144:ef7eb2e8f9f7 99 p += 2;
<> 144:ef7eb2e8f9f7 100 }
<> 144:ef7eb2e8f9f7 101 mac[0] &= ~0x01; // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
<> 144:ef7eb2e8f9f7 102 } else { // else return a default MAC
<> 144:ef7eb2e8f9f7 103 #endif
<> 144:ef7eb2e8f9f7 104 mac[0] = 0x00;
<> 144:ef7eb2e8f9f7 105 mac[1] = 0x02;
<> 144:ef7eb2e8f9f7 106 mac[2] = 0xF7;
<> 144:ef7eb2e8f9f7 107 mac[3] = 0xF0;
<> 144:ef7eb2e8f9f7 108 mac[4] = 0x00;
<> 144:ef7eb2e8f9f7 109 mac[5] = 0x00;
<> 144:ef7eb2e8f9f7 110 #if DEVICE_SEMIHOST
<> 144:ef7eb2e8f9f7 111 }
<> 144:ef7eb2e8f9f7 112 #endif
<> 144:ef7eb2e8f9f7 113 }