DSP Book Yeditepe / mbed_f401re

mbed library sources with internal temperature sensor for nucleo f401

common/semihost_api.c@0:7e2bd16f80af, 2015-01-17 (annotated)

Committer:
elessair
Date:
Sat Jan 17 18:03:58 2015 +0000
Revision:
0:7e2bd16f80af
nucleo f401re internal temperature added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:7e2bd16f80af 1 /* mbed Microcontroller Library
elessair 0:7e2bd16f80af 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:7e2bd16f80af 3 *
elessair 0:7e2bd16f80af 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:7e2bd16f80af 5 * you may not use this file except in compliance with the License.
elessair 0:7e2bd16f80af 6 * You may obtain a copy of the License at
elessair 0:7e2bd16f80af 7 *
elessair 0:7e2bd16f80af 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:7e2bd16f80af 9 *
elessair 0:7e2bd16f80af 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:7e2bd16f80af 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:7e2bd16f80af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:7e2bd16f80af 13 * See the License for the specific language governing permissions and
elessair 0:7e2bd16f80af 14 * limitations under the License.
elessair 0:7e2bd16f80af 15 */
elessair 0:7e2bd16f80af 16 #include "cmsis.h"
elessair 0:7e2bd16f80af 17 #include "semihost_api.h"
elessair 0:7e2bd16f80af 18
elessair 0:7e2bd16f80af 19 #include <stdint.h>
elessair 0:7e2bd16f80af 20 #include <string.h>
elessair 0:7e2bd16f80af 21
elessair 0:7e2bd16f80af 22 #if DEVICE_SEMIHOST
elessair 0:7e2bd16f80af 23
elessair 0:7e2bd16f80af 24 // ARM Semihosting Commands
elessair 0:7e2bd16f80af 25 #define SYS_OPEN (0x1)
elessair 0:7e2bd16f80af 26 #define SYS_CLOSE (0x2)
elessair 0:7e2bd16f80af 27 #define SYS_WRITE (0x5)
elessair 0:7e2bd16f80af 28 #define SYS_READ (0x6)
elessair 0:7e2bd16f80af 29 #define SYS_ISTTY (0x9)
elessair 0:7e2bd16f80af 30 #define SYS_SEEK (0xa)
elessair 0:7e2bd16f80af 31 #define SYS_ENSURE (0xb)
elessair 0:7e2bd16f80af 32 #define SYS_FLEN (0xc)
elessair 0:7e2bd16f80af 33 #define SYS_REMOVE (0xe)
elessair 0:7e2bd16f80af 34 #define SYS_RENAME (0xf)
elessair 0:7e2bd16f80af 35 #define SYS_EXIT (0x18)
elessair 0:7e2bd16f80af 36
elessair 0:7e2bd16f80af 37 // mbed Semihosting Commands
elessair 0:7e2bd16f80af 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
elessair 0:7e2bd16f80af 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
elessair 0:7e2bd16f80af 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
elessair 0:7e2bd16f80af 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
elessair 0:7e2bd16f80af 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
elessair 0:7e2bd16f80af 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
elessair 0:7e2bd16f80af 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
elessair 0:7e2bd16f80af 45
elessair 0:7e2bd16f80af 46 #if DEVICE_LOCALFILESYSTEM
elessair 0:7e2bd16f80af 47 FILEHANDLE semihost_open(const char* name, int openmode) {
elessair 0:7e2bd16f80af 48 uint32_t args[3];
elessair 0:7e2bd16f80af 49 args[0] = (uint32_t)name;
elessair 0:7e2bd16f80af 50 args[1] = (uint32_t)openmode;
elessair 0:7e2bd16f80af 51 args[2] = (uint32_t)strlen(name);
elessair 0:7e2bd16f80af 52 return __semihost(SYS_OPEN, args);
elessair 0:7e2bd16f80af 53 }
elessair 0:7e2bd16f80af 54
elessair 0:7e2bd16f80af 55 int semihost_close(FILEHANDLE fh) {
elessair 0:7e2bd16f80af 56 return __semihost(SYS_CLOSE, &fh);
elessair 0:7e2bd16f80af 57 }
elessair 0:7e2bd16f80af 58
elessair 0:7e2bd16f80af 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
elessair 0:7e2bd16f80af 60 if (length == 0) return 0;
elessair 0:7e2bd16f80af 61
elessair 0:7e2bd16f80af 62 uint32_t args[3];
elessair 0:7e2bd16f80af 63 args[0] = (uint32_t)fh;
elessair 0:7e2bd16f80af 64 args[1] = (uint32_t)buffer;
elessair 0:7e2bd16f80af 65 args[2] = (uint32_t)length;
elessair 0:7e2bd16f80af 66 return __semihost(SYS_WRITE, args);
elessair 0:7e2bd16f80af 67 }
elessair 0:7e2bd16f80af 68
elessair 0:7e2bd16f80af 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
elessair 0:7e2bd16f80af 70 uint32_t args[3];
elessair 0:7e2bd16f80af 71 args[0] = (uint32_t)fh;
elessair 0:7e2bd16f80af 72 args[1] = (uint32_t)buffer;
elessair 0:7e2bd16f80af 73 args[2] = (uint32_t)length;
elessair 0:7e2bd16f80af 74 return __semihost(SYS_READ, args);
elessair 0:7e2bd16f80af 75 }
elessair 0:7e2bd16f80af 76
elessair 0:7e2bd16f80af 77 int semihost_istty(FILEHANDLE fh) {
elessair 0:7e2bd16f80af 78 return __semihost(SYS_ISTTY, &fh);
elessair 0:7e2bd16f80af 79 }
elessair 0:7e2bd16f80af 80
elessair 0:7e2bd16f80af 81 int semihost_seek(FILEHANDLE fh, long position) {
elessair 0:7e2bd16f80af 82 uint32_t args[2];
elessair 0:7e2bd16f80af 83 args[0] = (uint32_t)fh;
elessair 0:7e2bd16f80af 84 args[1] = (uint32_t)position;
elessair 0:7e2bd16f80af 85 return __semihost(SYS_SEEK, args);
elessair 0:7e2bd16f80af 86 }
elessair 0:7e2bd16f80af 87
elessair 0:7e2bd16f80af 88 int semihost_ensure(FILEHANDLE fh) {
elessair 0:7e2bd16f80af 89 return __semihost(SYS_ENSURE, &fh);
elessair 0:7e2bd16f80af 90 }
elessair 0:7e2bd16f80af 91
elessair 0:7e2bd16f80af 92 long semihost_flen(FILEHANDLE fh) {
elessair 0:7e2bd16f80af 93 return __semihost(SYS_FLEN, &fh);
elessair 0:7e2bd16f80af 94 }
elessair 0:7e2bd16f80af 95
elessair 0:7e2bd16f80af 96 int semihost_remove(const char *name) {
elessair 0:7e2bd16f80af 97 uint32_t args[2];
elessair 0:7e2bd16f80af 98 args[0] = (uint32_t)name;
elessair 0:7e2bd16f80af 99 args[1] = (uint32_t)strlen(name);
elessair 0:7e2bd16f80af 100 return __semihost(SYS_REMOVE, args);
elessair 0:7e2bd16f80af 101 }
elessair 0:7e2bd16f80af 102
elessair 0:7e2bd16f80af 103 int semihost_rename(const char *old_name, const char *new_name) {
elessair 0:7e2bd16f80af 104 uint32_t args[4];
elessair 0:7e2bd16f80af 105 args[0] = (uint32_t)old_name;
elessair 0:7e2bd16f80af 106 args[1] = (uint32_t)strlen(old_name);
elessair 0:7e2bd16f80af 107 args[0] = (uint32_t)new_name;
elessair 0:7e2bd16f80af 108 args[1] = (uint32_t)strlen(new_name);
elessair 0:7e2bd16f80af 109 return __semihost(SYS_RENAME, args);
elessair 0:7e2bd16f80af 110 }
elessair 0:7e2bd16f80af 111 #endif
elessair 0:7e2bd16f80af 112
elessair 0:7e2bd16f80af 113 int semihost_exit(void) {
elessair 0:7e2bd16f80af 114 uint32_t args[4];
elessair 0:7e2bd16f80af 115 return __semihost(SYS_EXIT, args);
elessair 0:7e2bd16f80af 116 }
elessair 0:7e2bd16f80af 117
elessair 0:7e2bd16f80af 118 int semihost_uid(char *uid) {
elessair 0:7e2bd16f80af 119 uint32_t args[2];
elessair 0:7e2bd16f80af 120 args[0] = (uint32_t)uid;
elessair 0:7e2bd16f80af 121 args[1] = DEVICE_ID_LENGTH + 1;
elessair 0:7e2bd16f80af 122 return __semihost(USR_UID, &args);
elessair 0:7e2bd16f80af 123 }
elessair 0:7e2bd16f80af 124
elessair 0:7e2bd16f80af 125 int semihost_reset(void) {
elessair 0:7e2bd16f80af 126 // Does not normally return, however if used with older firmware versions
elessair 0:7e2bd16f80af 127 // that do not support this call it will return -1.
elessair 0:7e2bd16f80af 128 return __semihost(USR_RESET, NULL);
elessair 0:7e2bd16f80af 129 }
elessair 0:7e2bd16f80af 130
elessair 0:7e2bd16f80af 131 int semihost_vbus(void) {
elessair 0:7e2bd16f80af 132 return __semihost(USR_VBUS, NULL);
elessair 0:7e2bd16f80af 133 }
elessair 0:7e2bd16f80af 134
elessair 0:7e2bd16f80af 135 int semihost_powerdown(void) {
elessair 0:7e2bd16f80af 136 return __semihost(USR_POWERDOWN, NULL);
elessair 0:7e2bd16f80af 137 }
elessair 0:7e2bd16f80af 138
elessair 0:7e2bd16f80af 139 #if DEVICE_DEBUG_AWARENESS
elessair 0:7e2bd16f80af 140
elessair 0:7e2bd16f80af 141 int semihost_connected(void) {
elessair 0:7e2bd16f80af 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
elessair 0:7e2bd16f80af 143 }
elessair 0:7e2bd16f80af 144
elessair 0:7e2bd16f80af 145 #else
elessair 0:7e2bd16f80af 146 // These processors cannot know if the interface is connect, assume so:
elessair 0:7e2bd16f80af 147 static int is_debugger_attached = 1;
elessair 0:7e2bd16f80af 148
elessair 0:7e2bd16f80af 149 int semihost_connected(void) {
elessair 0:7e2bd16f80af 150 return is_debugger_attached;
elessair 0:7e2bd16f80af 151 }
elessair 0:7e2bd16f80af 152 #endif
elessair 0:7e2bd16f80af 153
elessair 0:7e2bd16f80af 154 int semihost_disabledebug(void) {
elessair 0:7e2bd16f80af 155 #if !(DEVICE_DEBUG_AWARENESS)
elessair 0:7e2bd16f80af 156 is_debugger_attached = 0;
elessair 0:7e2bd16f80af 157 #endif
elessair 0:7e2bd16f80af 158 return __semihost(USR_DISABLEDEBUG, NULL);
elessair 0:7e2bd16f80af 159 }
elessair 0:7e2bd16f80af 160
elessair 0:7e2bd16f80af 161 #endif
elessair 0:7e2bd16f80af 162