Kev Mann / mbed-dev-OS5_10_4

RTC auf true

platform/mbed_semihost_api.c@2:7aab896b1a3b, 2019-03-13 (annotated)

Committer:
kevman
Date:
Wed Mar 13 11:03:24 2019 +0000
Revision:
2:7aab896b1a3b
Parent:
0:38ceb79fef03 
2019-03-13

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kevman 0:38ceb79fef03 1 /* mbed Microcontroller Library
kevman 0:38ceb79fef03 2 * Copyright (c) 2006-2013 ARM Limited
kevman 0:38ceb79fef03 3 *
kevman 0:38ceb79fef03 4 * Licensed under the Apache License, Version 2.0 (the "License");
kevman 0:38ceb79fef03 5 * you may not use this file except in compliance with the License.
kevman 0:38ceb79fef03 6 * You may obtain a copy of the License at
kevman 0:38ceb79fef03 7 *
kevman 0:38ceb79fef03 8 * http://www.apache.org/licenses/LICENSE-2.0
kevman 0:38ceb79fef03 9 *
kevman 0:38ceb79fef03 10 * Unless required by applicable law or agreed to in writing, software
kevman 0:38ceb79fef03 11 * distributed under the License is distributed on an "AS IS" BASIS,
kevman 0:38ceb79fef03 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kevman 0:38ceb79fef03 13 * See the License for the specific language governing permissions and
kevman 0:38ceb79fef03 14 * limitations under the License.
kevman 0:38ceb79fef03 15 */
kevman 0:38ceb79fef03 16 #include "cmsis.h"
kevman 0:38ceb79fef03 17 #include "platform/mbed_semihost_api.h"
kevman 0:38ceb79fef03 18
kevman 0:38ceb79fef03 19 #include <stdint.h>
kevman 0:38ceb79fef03 20 #include <string.h>
kevman 0:38ceb79fef03 21
kevman 0:38ceb79fef03 22 #if DEVICE_SEMIHOST
kevman 0:38ceb79fef03 23
kevman 0:38ceb79fef03 24 // ARM Semihosting Commands
kevman 0:38ceb79fef03 25 #define SYS_OPEN (0x1)
kevman 0:38ceb79fef03 26 #define SYS_CLOSE (0x2)
kevman 0:38ceb79fef03 27 #define SYS_WRITE (0x5)
kevman 0:38ceb79fef03 28 #define SYS_READ (0x6)
kevman 0:38ceb79fef03 29 #define SYS_ISTTY (0x9)
kevman 0:38ceb79fef03 30 #define SYS_SEEK (0xa)
kevman 0:38ceb79fef03 31 #define SYS_ENSURE (0xb)
kevman 0:38ceb79fef03 32 #define SYS_FLEN (0xc)
kevman 0:38ceb79fef03 33 #define SYS_REMOVE (0xe)
kevman 0:38ceb79fef03 34 #define SYS_RENAME (0xf)
kevman 0:38ceb79fef03 35 #define SYS_EXIT (0x18)
kevman 0:38ceb79fef03 36
kevman 0:38ceb79fef03 37 // mbed Semihosting Commands
kevman 0:38ceb79fef03 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
kevman 0:38ceb79fef03 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
kevman 0:38ceb79fef03 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
kevman 0:38ceb79fef03 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
kevman 0:38ceb79fef03 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
kevman 0:38ceb79fef03 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
kevman 0:38ceb79fef03 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
kevman 0:38ceb79fef03 45
kevman 0:38ceb79fef03 46 #if DEVICE_LOCALFILESYSTEM
kevman 0:38ceb79fef03 47 FILEHANDLE semihost_open(const char *name, int openmode)
kevman 0:38ceb79fef03 48 {
kevman 0:38ceb79fef03 49 uint32_t args[3];
kevman 0:38ceb79fef03 50 args[0] = (uint32_t)name;
kevman 0:38ceb79fef03 51 args[1] = (uint32_t)openmode;
kevman 0:38ceb79fef03 52 args[2] = (uint32_t)strlen(name);
kevman 0:38ceb79fef03 53 return __semihost(SYS_OPEN, args);
kevman 0:38ceb79fef03 54 }
kevman 0:38ceb79fef03 55
kevman 0:38ceb79fef03 56 int semihost_close(FILEHANDLE fh)
kevman 0:38ceb79fef03 57 {
kevman 0:38ceb79fef03 58 return __semihost(SYS_CLOSE, &fh);
kevman 0:38ceb79fef03 59 }
kevman 0:38ceb79fef03 60
kevman 0:38ceb79fef03 61 int semihost_write(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode)
kevman 0:38ceb79fef03 62 {
kevman 0:38ceb79fef03 63 if (length == 0) {
kevman 0:38ceb79fef03 64 return 0;
kevman 0:38ceb79fef03 65 }
kevman 0:38ceb79fef03 66
kevman 0:38ceb79fef03 67 uint32_t args[3];
kevman 0:38ceb79fef03 68 args[0] = (uint32_t)fh;
kevman 0:38ceb79fef03 69 args[1] = (uint32_t)buffer;
kevman 0:38ceb79fef03 70 args[2] = (uint32_t)length;
kevman 0:38ceb79fef03 71 return __semihost(SYS_WRITE, args);
kevman 0:38ceb79fef03 72 }
kevman 0:38ceb79fef03 73
kevman 0:38ceb79fef03 74 int semihost_read(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode)
kevman 0:38ceb79fef03 75 {
kevman 0:38ceb79fef03 76 uint32_t args[3];
kevman 0:38ceb79fef03 77 args[0] = (uint32_t)fh;
kevman 0:38ceb79fef03 78 args[1] = (uint32_t)buffer;
kevman 0:38ceb79fef03 79 args[2] = (uint32_t)length;
kevman 0:38ceb79fef03 80 return __semihost(SYS_READ, args);
kevman 0:38ceb79fef03 81 }
kevman 0:38ceb79fef03 82
kevman 0:38ceb79fef03 83 int semihost_istty(FILEHANDLE fh)
kevman 0:38ceb79fef03 84 {
kevman 0:38ceb79fef03 85 return __semihost(SYS_ISTTY, &fh);
kevman 0:38ceb79fef03 86 }
kevman 0:38ceb79fef03 87
kevman 0:38ceb79fef03 88 int semihost_seek(FILEHANDLE fh, long position)
kevman 0:38ceb79fef03 89 {
kevman 0:38ceb79fef03 90 uint32_t args[2];
kevman 0:38ceb79fef03 91 args[0] = (uint32_t)fh;
kevman 0:38ceb79fef03 92 args[1] = (uint32_t)position;
kevman 0:38ceb79fef03 93 return __semihost(SYS_SEEK, args);
kevman 0:38ceb79fef03 94 }
kevman 0:38ceb79fef03 95
kevman 0:38ceb79fef03 96 int semihost_ensure(FILEHANDLE fh)
kevman 0:38ceb79fef03 97 {
kevman 0:38ceb79fef03 98 return __semihost(SYS_ENSURE, &fh);
kevman 0:38ceb79fef03 99 }
kevman 0:38ceb79fef03 100
kevman 0:38ceb79fef03 101 long semihost_flen(FILEHANDLE fh)
kevman 0:38ceb79fef03 102 {
kevman 0:38ceb79fef03 103 return __semihost(SYS_FLEN, &fh);
kevman 0:38ceb79fef03 104 }
kevman 0:38ceb79fef03 105
kevman 0:38ceb79fef03 106 int semihost_remove(const char *name)
kevman 0:38ceb79fef03 107 {
kevman 0:38ceb79fef03 108 uint32_t args[2];
kevman 0:38ceb79fef03 109 args[0] = (uint32_t)name;
kevman 0:38ceb79fef03 110 args[1] = (uint32_t)strlen(name);
kevman 0:38ceb79fef03 111 return __semihost(SYS_REMOVE, args);
kevman 0:38ceb79fef03 112 }
kevman 0:38ceb79fef03 113
kevman 0:38ceb79fef03 114 int semihost_rename(const char *old_name, const char *new_name)
kevman 0:38ceb79fef03 115 {
kevman 0:38ceb79fef03 116 uint32_t args[4];
kevman 0:38ceb79fef03 117 args[0] = (uint32_t)old_name;
kevman 0:38ceb79fef03 118 args[1] = (uint32_t)strlen(old_name);
kevman 0:38ceb79fef03 119 args[0] = (uint32_t)new_name;
kevman 0:38ceb79fef03 120 args[1] = (uint32_t)strlen(new_name);
kevman 0:38ceb79fef03 121 return __semihost(SYS_RENAME, args);
kevman 0:38ceb79fef03 122 }
kevman 0:38ceb79fef03 123 #endif
kevman 0:38ceb79fef03 124
kevman 0:38ceb79fef03 125 int semihost_exit(void)
kevman 0:38ceb79fef03 126 {
kevman 0:38ceb79fef03 127 uint32_t args[4];
kevman 0:38ceb79fef03 128 return __semihost(SYS_EXIT, args);
kevman 0:38ceb79fef03 129 }
kevman 0:38ceb79fef03 130
kevman 0:38ceb79fef03 131 int semihost_uid(char *uid)
kevman 0:38ceb79fef03 132 {
kevman 0:38ceb79fef03 133 uint32_t args[2];
kevman 0:38ceb79fef03 134 args[0] = (uint32_t)uid;
kevman 0:38ceb79fef03 135 args[1] = DEVICE_ID_LENGTH + 1;
kevman 0:38ceb79fef03 136 return __semihost(USR_UID, &args);
kevman 0:38ceb79fef03 137 }
kevman 0:38ceb79fef03 138
kevman 0:38ceb79fef03 139 int semihost_reset(void)
kevman 0:38ceb79fef03 140 {
kevman 0:38ceb79fef03 141 // Does not normally return, however if used with older firmware versions
kevman 0:38ceb79fef03 142 // that do not support this call it will return -1.
kevman 0:38ceb79fef03 143 return __semihost(USR_RESET, NULL);
kevman 0:38ceb79fef03 144 }
kevman 0:38ceb79fef03 145
kevman 0:38ceb79fef03 146 int semihost_vbus(void)
kevman 0:38ceb79fef03 147 {
kevman 0:38ceb79fef03 148 return __semihost(USR_VBUS, NULL);
kevman 0:38ceb79fef03 149 }
kevman 0:38ceb79fef03 150
kevman 0:38ceb79fef03 151 int semihost_powerdown(void)
kevman 0:38ceb79fef03 152 {
kevman 0:38ceb79fef03 153 return __semihost(USR_POWERDOWN, NULL);
kevman 0:38ceb79fef03 154 }
kevman 0:38ceb79fef03 155
kevman 0:38ceb79fef03 156 #if DEVICE_DEBUG_AWARENESS
kevman 0:38ceb79fef03 157
kevman 0:38ceb79fef03 158 int semihost_connected(void)
kevman 0:38ceb79fef03 159 {
kevman 0:38ceb79fef03 160 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
kevman 0:38ceb79fef03 161 }
kevman 0:38ceb79fef03 162
kevman 0:38ceb79fef03 163 #else
kevman 0:38ceb79fef03 164 // These processors cannot know if the interface is connect, assume so:
kevman 0:38ceb79fef03 165 static int is_debugger_attached = 1;
kevman 0:38ceb79fef03 166
kevman 0:38ceb79fef03 167 int semihost_connected(void)
kevman 0:38ceb79fef03 168 {
kevman 0:38ceb79fef03 169 return is_debugger_attached;
kevman 0:38ceb79fef03 170 }
kevman 0:38ceb79fef03 171 #endif
kevman 0:38ceb79fef03 172
kevman 0:38ceb79fef03 173 int semihost_disabledebug(void)
kevman 0:38ceb79fef03 174 {
kevman 0:38ceb79fef03 175 uint32_t args[1];
kevman 0:38ceb79fef03 176 #if !(DEVICE_DEBUG_AWARENESS)
kevman 0:38ceb79fef03 177 is_debugger_attached = 0;
kevman 0:38ceb79fef03 178 #endif
kevman 0:38ceb79fef03 179 return __semihost(USR_DISABLEDEBUG, &args);
kevman 0:38ceb79fef03 180 }
kevman 0:38ceb79fef03 181
kevman 0:38ceb79fef03 182 #endif
kevman 0:38ceb79fef03 183