PHung Tung / WAV2

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Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

mbed_src_STM32F7/common/semihost_api.c@0:aa3fc5ad02f7, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 09:08:29 2019 +0000
Revision:
0:aa3fc5ad02f7
SPKT

Who changed what in which revision?

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phungductung 0:aa3fc5ad02f7 1 /* mbed Microcontroller Library
phungductung 0:aa3fc5ad02f7 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:aa3fc5ad02f7 3 *
phungductung 0:aa3fc5ad02f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:aa3fc5ad02f7 5 * you may not use this file except in compliance with the License.
phungductung 0:aa3fc5ad02f7 6 * You may obtain a copy of the License at
phungductung 0:aa3fc5ad02f7 7 *
phungductung 0:aa3fc5ad02f7 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:aa3fc5ad02f7 9 *
phungductung 0:aa3fc5ad02f7 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:aa3fc5ad02f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:aa3fc5ad02f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:aa3fc5ad02f7 13 * See the License for the specific language governing permissions and
phungductung 0:aa3fc5ad02f7 14 * limitations under the License.
phungductung 0:aa3fc5ad02f7 15 */
phungductung 0:aa3fc5ad02f7 16 #include "cmsis.h"
phungductung 0:aa3fc5ad02f7 17 #include "semihost_api.h"
phungductung 0:aa3fc5ad02f7 18
phungductung 0:aa3fc5ad02f7 19 #include <stdint.h>
phungductung 0:aa3fc5ad02f7 20 #include <string.h>
phungductung 0:aa3fc5ad02f7 21
phungductung 0:aa3fc5ad02f7 22 #if DEVICE_SEMIHOST
phungductung 0:aa3fc5ad02f7 23
phungductung 0:aa3fc5ad02f7 24 // ARM Semihosting Commands
phungductung 0:aa3fc5ad02f7 25 #define SYS_OPEN (0x1)
phungductung 0:aa3fc5ad02f7 26 #define SYS_CLOSE (0x2)
phungductung 0:aa3fc5ad02f7 27 #define SYS_WRITE (0x5)
phungductung 0:aa3fc5ad02f7 28 #define SYS_READ (0x6)
phungductung 0:aa3fc5ad02f7 29 #define SYS_ISTTY (0x9)
phungductung 0:aa3fc5ad02f7 30 #define SYS_SEEK (0xa)
phungductung 0:aa3fc5ad02f7 31 #define SYS_ENSURE (0xb)
phungductung 0:aa3fc5ad02f7 32 #define SYS_FLEN (0xc)
phungductung 0:aa3fc5ad02f7 33 #define SYS_REMOVE (0xe)
phungductung 0:aa3fc5ad02f7 34 #define SYS_RENAME (0xf)
phungductung 0:aa3fc5ad02f7 35 #define SYS_EXIT (0x18)
phungductung 0:aa3fc5ad02f7 36
phungductung 0:aa3fc5ad02f7 37 // mbed Semihosting Commands
phungductung 0:aa3fc5ad02f7 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
phungductung 0:aa3fc5ad02f7 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
phungductung 0:aa3fc5ad02f7 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
phungductung 0:aa3fc5ad02f7 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
phungductung 0:aa3fc5ad02f7 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
phungductung 0:aa3fc5ad02f7 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
phungductung 0:aa3fc5ad02f7 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
phungductung 0:aa3fc5ad02f7 45
phungductung 0:aa3fc5ad02f7 46 #if DEVICE_LOCALFILESYSTEM
phungductung 0:aa3fc5ad02f7 47 FILEHANDLE semihost_open(const char* name, int openmode) {
phungductung 0:aa3fc5ad02f7 48 uint32_t args[3];
phungductung 0:aa3fc5ad02f7 49 args[0] = (uint32_t)name;
phungductung 0:aa3fc5ad02f7 50 args[1] = (uint32_t)openmode;
phungductung 0:aa3fc5ad02f7 51 args[2] = (uint32_t)strlen(name);
phungductung 0:aa3fc5ad02f7 52 return __semihost(SYS_OPEN, args);
phungductung 0:aa3fc5ad02f7 53 }
phungductung 0:aa3fc5ad02f7 54
phungductung 0:aa3fc5ad02f7 55 int semihost_close(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 56 return __semihost(SYS_CLOSE, &fh);
phungductung 0:aa3fc5ad02f7 57 }
phungductung 0:aa3fc5ad02f7 58
phungductung 0:aa3fc5ad02f7 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
phungductung 0:aa3fc5ad02f7 60 if (length == 0) return 0;
phungductung 0:aa3fc5ad02f7 61
phungductung 0:aa3fc5ad02f7 62 uint32_t args[3];
phungductung 0:aa3fc5ad02f7 63 args[0] = (uint32_t)fh;
phungductung 0:aa3fc5ad02f7 64 args[1] = (uint32_t)buffer;
phungductung 0:aa3fc5ad02f7 65 args[2] = (uint32_t)length;
phungductung 0:aa3fc5ad02f7 66 return __semihost(SYS_WRITE, args);
phungductung 0:aa3fc5ad02f7 67 }
phungductung 0:aa3fc5ad02f7 68
phungductung 0:aa3fc5ad02f7 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
phungductung 0:aa3fc5ad02f7 70 uint32_t args[3];
phungductung 0:aa3fc5ad02f7 71 args[0] = (uint32_t)fh;
phungductung 0:aa3fc5ad02f7 72 args[1] = (uint32_t)buffer;
phungductung 0:aa3fc5ad02f7 73 args[2] = (uint32_t)length;
phungductung 0:aa3fc5ad02f7 74 return __semihost(SYS_READ, args);
phungductung 0:aa3fc5ad02f7 75 }
phungductung 0:aa3fc5ad02f7 76
phungductung 0:aa3fc5ad02f7 77 int semihost_istty(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 78 return __semihost(SYS_ISTTY, &fh);
phungductung 0:aa3fc5ad02f7 79 }
phungductung 0:aa3fc5ad02f7 80
phungductung 0:aa3fc5ad02f7 81 int semihost_seek(FILEHANDLE fh, long position) {
phungductung 0:aa3fc5ad02f7 82 uint32_t args[2];
phungductung 0:aa3fc5ad02f7 83 args[0] = (uint32_t)fh;
phungductung 0:aa3fc5ad02f7 84 args[1] = (uint32_t)position;
phungductung 0:aa3fc5ad02f7 85 return __semihost(SYS_SEEK, args);
phungductung 0:aa3fc5ad02f7 86 }
phungductung 0:aa3fc5ad02f7 87
phungductung 0:aa3fc5ad02f7 88 int semihost_ensure(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 89 return __semihost(SYS_ENSURE, &fh);
phungductung 0:aa3fc5ad02f7 90 }
phungductung 0:aa3fc5ad02f7 91
phungductung 0:aa3fc5ad02f7 92 long semihost_flen(FILEHANDLE fh) {
phungductung 0:aa3fc5ad02f7 93 return __semihost(SYS_FLEN, &fh);
phungductung 0:aa3fc5ad02f7 94 }
phungductung 0:aa3fc5ad02f7 95
phungductung 0:aa3fc5ad02f7 96 int semihost_remove(const char *name) {
phungductung 0:aa3fc5ad02f7 97 uint32_t args[2];
phungductung 0:aa3fc5ad02f7 98 args[0] = (uint32_t)name;
phungductung 0:aa3fc5ad02f7 99 args[1] = (uint32_t)strlen(name);
phungductung 0:aa3fc5ad02f7 100 return __semihost(SYS_REMOVE, args);
phungductung 0:aa3fc5ad02f7 101 }
phungductung 0:aa3fc5ad02f7 102
phungductung 0:aa3fc5ad02f7 103 int semihost_rename(const char *old_name, const char *new_name) {
phungductung 0:aa3fc5ad02f7 104 uint32_t args[4];
phungductung 0:aa3fc5ad02f7 105 args[0] = (uint32_t)old_name;
phungductung 0:aa3fc5ad02f7 106 args[1] = (uint32_t)strlen(old_name);
phungductung 0:aa3fc5ad02f7 107 args[0] = (uint32_t)new_name;
phungductung 0:aa3fc5ad02f7 108 args[1] = (uint32_t)strlen(new_name);
phungductung 0:aa3fc5ad02f7 109 return __semihost(SYS_RENAME, args);
phungductung 0:aa3fc5ad02f7 110 }
phungductung 0:aa3fc5ad02f7 111 #endif
phungductung 0:aa3fc5ad02f7 112
phungductung 0:aa3fc5ad02f7 113 int semihost_exit(void) {
phungductung 0:aa3fc5ad02f7 114 uint32_t args[4];
phungductung 0:aa3fc5ad02f7 115 return __semihost(SYS_EXIT, args);
phungductung 0:aa3fc5ad02f7 116 }
phungductung 0:aa3fc5ad02f7 117
phungductung 0:aa3fc5ad02f7 118 int semihost_uid(char *uid) {
phungductung 0:aa3fc5ad02f7 119 uint32_t args[2];
phungductung 0:aa3fc5ad02f7 120 args[0] = (uint32_t)uid;
phungductung 0:aa3fc5ad02f7 121 args[1] = DEVICE_ID_LENGTH + 1;
phungductung 0:aa3fc5ad02f7 122 return __semihost(USR_UID, &args);
phungductung 0:aa3fc5ad02f7 123 }
phungductung 0:aa3fc5ad02f7 124
phungductung 0:aa3fc5ad02f7 125 int semihost_reset(void) {
phungductung 0:aa3fc5ad02f7 126 // Does not normally return, however if used with older firmware versions
phungductung 0:aa3fc5ad02f7 127 // that do not support this call it will return -1.
phungductung 0:aa3fc5ad02f7 128 return __semihost(USR_RESET, NULL);
phungductung 0:aa3fc5ad02f7 129 }
phungductung 0:aa3fc5ad02f7 130
phungductung 0:aa3fc5ad02f7 131 int semihost_vbus(void) {
phungductung 0:aa3fc5ad02f7 132 return __semihost(USR_VBUS, NULL);
phungductung 0:aa3fc5ad02f7 133 }
phungductung 0:aa3fc5ad02f7 134
phungductung 0:aa3fc5ad02f7 135 int semihost_powerdown(void) {
phungductung 0:aa3fc5ad02f7 136 return __semihost(USR_POWERDOWN, NULL);
phungductung 0:aa3fc5ad02f7 137 }
phungductung 0:aa3fc5ad02f7 138
phungductung 0:aa3fc5ad02f7 139 #if DEVICE_DEBUG_AWARENESS
phungductung 0:aa3fc5ad02f7 140
phungductung 0:aa3fc5ad02f7 141 int semihost_connected(void) {
phungductung 0:aa3fc5ad02f7 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
phungductung 0:aa3fc5ad02f7 143 }
phungductung 0:aa3fc5ad02f7 144
phungductung 0:aa3fc5ad02f7 145 #else
phungductung 0:aa3fc5ad02f7 146 // These processors cannot know if the interface is connect, assume so:
phungductung 0:aa3fc5ad02f7 147 static int is_debugger_attached = 1;
phungductung 0:aa3fc5ad02f7 148
phungductung 0:aa3fc5ad02f7 149 int semihost_connected(void) {
phungductung 0:aa3fc5ad02f7 150 return is_debugger_attached;
phungductung 0:aa3fc5ad02f7 151 }
phungductung 0:aa3fc5ad02f7 152 #endif
phungductung 0:aa3fc5ad02f7 153
phungductung 0:aa3fc5ad02f7 154 int semihost_disabledebug(void) {
phungductung 0:aa3fc5ad02f7 155 #if !(DEVICE_DEBUG_AWARENESS)
phungductung 0:aa3fc5ad02f7 156 is_debugger_attached = 0;
phungductung 0:aa3fc5ad02f7 157 #endif
phungductung 0:aa3fc5ad02f7 158 return __semihost(USR_DISABLEDEBUG, NULL);
phungductung 0:aa3fc5ad02f7 159 }
phungductung 0:aa3fc5ad02f7 160
phungductung 0:aa3fc5ad02f7 161 #endif
phungductung 0:aa3fc5ad02f7 162