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Opencv 3.1 project on GR-PEACH board

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platform/mbed_semihost_api.c@167:1657b442184c, 2017-06-29 (annotated)

Committer:
thedo
Date:
Thu Jun 29 11:01:39 2017 +0000
Revision:
167:1657b442184c
Opencv 3.1 project on GR-PEACH board, 4 apps

Who changed what in which revision?

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thedo 167:1657b442184c 1 /* mbed Microcontroller Library
thedo 167:1657b442184c 2 * Copyright (c) 2006-2013 ARM Limited
thedo 167:1657b442184c 3 *
thedo 167:1657b442184c 4 * Licensed under the Apache License, Version 2.0 (the "License");
thedo 167:1657b442184c 5 * you may not use this file except in compliance with the License.
thedo 167:1657b442184c 6 * You may obtain a copy of the License at
thedo 167:1657b442184c 7 *
thedo 167:1657b442184c 8 * http://www.apache.org/licenses/LICENSE-2.0
thedo 167:1657b442184c 9 *
thedo 167:1657b442184c 10 * Unless required by applicable law or agreed to in writing, software
thedo 167:1657b442184c 11 * distributed under the License is distributed on an "AS IS" BASIS,
thedo 167:1657b442184c 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
thedo 167:1657b442184c 13 * See the License for the specific language governing permissions and
thedo 167:1657b442184c 14 * limitations under the License.
thedo 167:1657b442184c 15 */
thedo 167:1657b442184c 16 #include "cmsis.h"
thedo 167:1657b442184c 17 #include "platform/mbed_semihost_api.h"
thedo 167:1657b442184c 18
thedo 167:1657b442184c 19 #include <stdint.h>
thedo 167:1657b442184c 20 #include <string.h>
thedo 167:1657b442184c 21
thedo 167:1657b442184c 22 #if DEVICE_SEMIHOST
thedo 167:1657b442184c 23
thedo 167:1657b442184c 24 // ARM Semihosting Commands
thedo 167:1657b442184c 25 #define SYS_OPEN (0x1)
thedo 167:1657b442184c 26 #define SYS_CLOSE (0x2)
thedo 167:1657b442184c 27 #define SYS_WRITE (0x5)
thedo 167:1657b442184c 28 #define SYS_READ (0x6)
thedo 167:1657b442184c 29 #define SYS_ISTTY (0x9)
thedo 167:1657b442184c 30 #define SYS_SEEK (0xa)
thedo 167:1657b442184c 31 #define SYS_ENSURE (0xb)
thedo 167:1657b442184c 32 #define SYS_FLEN (0xc)
thedo 167:1657b442184c 33 #define SYS_REMOVE (0xe)
thedo 167:1657b442184c 34 #define SYS_RENAME (0xf)
thedo 167:1657b442184c 35 #define SYS_EXIT (0x18)
thedo 167:1657b442184c 36
thedo 167:1657b442184c 37 // mbed Semihosting Commands
thedo 167:1657b442184c 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
thedo 167:1657b442184c 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
thedo 167:1657b442184c 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
thedo 167:1657b442184c 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
thedo 167:1657b442184c 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
thedo 167:1657b442184c 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
thedo 167:1657b442184c 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
thedo 167:1657b442184c 45
thedo 167:1657b442184c 46 #if DEVICE_LOCALFILESYSTEM
thedo 167:1657b442184c 47 FILEHANDLE semihost_open(const char* name, int openmode) {
thedo 167:1657b442184c 48 uint32_t args[3];
thedo 167:1657b442184c 49 args[0] = (uint32_t)name;
thedo 167:1657b442184c 50 args[1] = (uint32_t)openmode;
thedo 167:1657b442184c 51 args[2] = (uint32_t)strlen(name);
thedo 167:1657b442184c 52 return __semihost(SYS_OPEN, args);
thedo 167:1657b442184c 53 }
thedo 167:1657b442184c 54
thedo 167:1657b442184c 55 int semihost_close(FILEHANDLE fh) {
thedo 167:1657b442184c 56 return __semihost(SYS_CLOSE, &fh);
thedo 167:1657b442184c 57 }
thedo 167:1657b442184c 58
thedo 167:1657b442184c 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
thedo 167:1657b442184c 60 if (length == 0) return 0;
thedo 167:1657b442184c 61
thedo 167:1657b442184c 62 uint32_t args[3];
thedo 167:1657b442184c 63 args[0] = (uint32_t)fh;
thedo 167:1657b442184c 64 args[1] = (uint32_t)buffer;
thedo 167:1657b442184c 65 args[2] = (uint32_t)length;
thedo 167:1657b442184c 66 return __semihost(SYS_WRITE, args);
thedo 167:1657b442184c 67 }
thedo 167:1657b442184c 68
thedo 167:1657b442184c 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
thedo 167:1657b442184c 70 uint32_t args[3];
thedo 167:1657b442184c 71 args[0] = (uint32_t)fh;
thedo 167:1657b442184c 72 args[1] = (uint32_t)buffer;
thedo 167:1657b442184c 73 args[2] = (uint32_t)length;
thedo 167:1657b442184c 74 return __semihost(SYS_READ, args);
thedo 167:1657b442184c 75 }
thedo 167:1657b442184c 76
thedo 167:1657b442184c 77 int semihost_istty(FILEHANDLE fh) {
thedo 167:1657b442184c 78 return __semihost(SYS_ISTTY, &fh);
thedo 167:1657b442184c 79 }
thedo 167:1657b442184c 80
thedo 167:1657b442184c 81 int semihost_seek(FILEHANDLE fh, long position) {
thedo 167:1657b442184c 82 uint32_t args[2];
thedo 167:1657b442184c 83 args[0] = (uint32_t)fh;
thedo 167:1657b442184c 84 args[1] = (uint32_t)position;
thedo 167:1657b442184c 85 return __semihost(SYS_SEEK, args);
thedo 167:1657b442184c 86 }
thedo 167:1657b442184c 87
thedo 167:1657b442184c 88 int semihost_ensure(FILEHANDLE fh) {
thedo 167:1657b442184c 89 return __semihost(SYS_ENSURE, &fh);
thedo 167:1657b442184c 90 }
thedo 167:1657b442184c 91
thedo 167:1657b442184c 92 long semihost_flen(FILEHANDLE fh) {
thedo 167:1657b442184c 93 return __semihost(SYS_FLEN, &fh);
thedo 167:1657b442184c 94 }
thedo 167:1657b442184c 95
thedo 167:1657b442184c 96 int semihost_remove(const char *name) {
thedo 167:1657b442184c 97 uint32_t args[2];
thedo 167:1657b442184c 98 args[0] = (uint32_t)name;
thedo 167:1657b442184c 99 args[1] = (uint32_t)strlen(name);
thedo 167:1657b442184c 100 return __semihost(SYS_REMOVE, args);
thedo 167:1657b442184c 101 }
thedo 167:1657b442184c 102
thedo 167:1657b442184c 103 int semihost_rename(const char *old_name, const char *new_name) {
thedo 167:1657b442184c 104 uint32_t args[4];
thedo 167:1657b442184c 105 args[0] = (uint32_t)old_name;
thedo 167:1657b442184c 106 args[1] = (uint32_t)strlen(old_name);
thedo 167:1657b442184c 107 args[0] = (uint32_t)new_name;
thedo 167:1657b442184c 108 args[1] = (uint32_t)strlen(new_name);
thedo 167:1657b442184c 109 return __semihost(SYS_RENAME, args);
thedo 167:1657b442184c 110 }
thedo 167:1657b442184c 111 #endif
thedo 167:1657b442184c 112
thedo 167:1657b442184c 113 int semihost_exit(void) {
thedo 167:1657b442184c 114 uint32_t args[4];
thedo 167:1657b442184c 115 return __semihost(SYS_EXIT, args);
thedo 167:1657b442184c 116 }
thedo 167:1657b442184c 117
thedo 167:1657b442184c 118 int semihost_uid(char *uid) {
thedo 167:1657b442184c 119 uint32_t args[2];
thedo 167:1657b442184c 120 args[0] = (uint32_t)uid;
thedo 167:1657b442184c 121 args[1] = DEVICE_ID_LENGTH + 1;
thedo 167:1657b442184c 122 return __semihost(USR_UID, &args);
thedo 167:1657b442184c 123 }
thedo 167:1657b442184c 124
thedo 167:1657b442184c 125 int semihost_reset(void) {
thedo 167:1657b442184c 126 // Does not normally return, however if used with older firmware versions
thedo 167:1657b442184c 127 // that do not support this call it will return -1.
thedo 167:1657b442184c 128 return __semihost(USR_RESET, NULL);
thedo 167:1657b442184c 129 }
thedo 167:1657b442184c 130
thedo 167:1657b442184c 131 int semihost_vbus(void) {
thedo 167:1657b442184c 132 return __semihost(USR_VBUS, NULL);
thedo 167:1657b442184c 133 }
thedo 167:1657b442184c 134
thedo 167:1657b442184c 135 int semihost_powerdown(void) {
thedo 167:1657b442184c 136 return __semihost(USR_POWERDOWN, NULL);
thedo 167:1657b442184c 137 }
thedo 167:1657b442184c 138
thedo 167:1657b442184c 139 #if DEVICE_DEBUG_AWARENESS
thedo 167:1657b442184c 140
thedo 167:1657b442184c 141 int semihost_connected(void) {
thedo 167:1657b442184c 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
thedo 167:1657b442184c 143 }
thedo 167:1657b442184c 144
thedo 167:1657b442184c 145 #else
thedo 167:1657b442184c 146 // These processors cannot know if the interface is connect, assume so:
thedo 167:1657b442184c 147 static int is_debugger_attached = 1;
thedo 167:1657b442184c 148
thedo 167:1657b442184c 149 int semihost_connected(void) {
thedo 167:1657b442184c 150 return is_debugger_attached;
thedo 167:1657b442184c 151 }
thedo 167:1657b442184c 152 #endif
thedo 167:1657b442184c 153
thedo 167:1657b442184c 154 int semihost_disabledebug(void) {
thedo 167:1657b442184c 155 uint32_t args[1];
thedo 167:1657b442184c 156 #if !(DEVICE_DEBUG_AWARENESS)
thedo 167:1657b442184c 157 is_debugger_attached = 0;
thedo 167:1657b442184c 158 #endif
thedo 167:1657b442184c 159 return __semihost(USR_DISABLEDEBUG, &args);
thedo 167:1657b442184c 160 }
thedo 167:1657b442184c 161
thedo 167:1657b442184c 162 #endif
thedo 167:1657b442184c 163
thedo 167:1657b442184c 164