不韋 呂 / F746_SD_Player_Demo

Demo program for library named SD_PlayerSkeleton of SD card player skeleton. SD カードプレーヤのための骨組みとして使うためのライブラリ SD_PlayerSkeleton の使用例．このプログラムについては，CQ出版社インターフェース誌 2018年7月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton

mbed_src_STM32F7/common/semihost_api.c@19:3c3833ec00d2, 2017-04-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Apr 09 12:44:17 2017 +0000
Revision:
19:3c3833ec00d2
Parent:
2:cf42e62a97dc 
20

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:cf42e62a97dc 1 /* mbed Microcontroller Library
MikamiUitOpen 2:cf42e62a97dc 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 2:cf42e62a97dc 3 *
MikamiUitOpen 2:cf42e62a97dc 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:cf42e62a97dc 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:cf42e62a97dc 6 * You may obtain a copy of the License at
MikamiUitOpen 2:cf42e62a97dc 7 *
MikamiUitOpen 2:cf42e62a97dc 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:cf42e62a97dc 9 *
MikamiUitOpen 2:cf42e62a97dc 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:cf42e62a97dc 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:cf42e62a97dc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:cf42e62a97dc 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:cf42e62a97dc 14 * limitations under the License.
MikamiUitOpen 2:cf42e62a97dc 15 */
MikamiUitOpen 2:cf42e62a97dc 16 #include "cmsis.h"
MikamiUitOpen 2:cf42e62a97dc 17 #include "semihost_api.h"
MikamiUitOpen 2:cf42e62a97dc 18
MikamiUitOpen 2:cf42e62a97dc 19 #include <stdint.h>
MikamiUitOpen 2:cf42e62a97dc 20 #include <string.h>
MikamiUitOpen 2:cf42e62a97dc 21
MikamiUitOpen 2:cf42e62a97dc 22 #if DEVICE_SEMIHOST
MikamiUitOpen 2:cf42e62a97dc 23
MikamiUitOpen 2:cf42e62a97dc 24 // ARM Semihosting Commands
MikamiUitOpen 2:cf42e62a97dc 25 #define SYS_OPEN (0x1)
MikamiUitOpen 2:cf42e62a97dc 26 #define SYS_CLOSE (0x2)
MikamiUitOpen 2:cf42e62a97dc 27 #define SYS_WRITE (0x5)
MikamiUitOpen 2:cf42e62a97dc 28 #define SYS_READ (0x6)
MikamiUitOpen 2:cf42e62a97dc 29 #define SYS_ISTTY (0x9)
MikamiUitOpen 2:cf42e62a97dc 30 #define SYS_SEEK (0xa)
MikamiUitOpen 2:cf42e62a97dc 31 #define SYS_ENSURE (0xb)
MikamiUitOpen 2:cf42e62a97dc 32 #define SYS_FLEN (0xc)
MikamiUitOpen 2:cf42e62a97dc 33 #define SYS_REMOVE (0xe)
MikamiUitOpen 2:cf42e62a97dc 34 #define SYS_RENAME (0xf)
MikamiUitOpen 2:cf42e62a97dc 35 #define SYS_EXIT (0x18)
MikamiUitOpen 2:cf42e62a97dc 36
MikamiUitOpen 2:cf42e62a97dc 37 // mbed Semihosting Commands
MikamiUitOpen 2:cf42e62a97dc 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
MikamiUitOpen 2:cf42e62a97dc 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
MikamiUitOpen 2:cf42e62a97dc 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
MikamiUitOpen 2:cf42e62a97dc 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
MikamiUitOpen 2:cf42e62a97dc 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
MikamiUitOpen 2:cf42e62a97dc 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
MikamiUitOpen 2:cf42e62a97dc 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
MikamiUitOpen 2:cf42e62a97dc 45
MikamiUitOpen 2:cf42e62a97dc 46 #if DEVICE_LOCALFILESYSTEM
MikamiUitOpen 2:cf42e62a97dc 47 FILEHANDLE semihost_open(const char* name, int openmode) {
MikamiUitOpen 2:cf42e62a97dc 48 uint32_t args[3];
MikamiUitOpen 2:cf42e62a97dc 49 args[0] = (uint32_t)name;
MikamiUitOpen 2:cf42e62a97dc 50 args[1] = (uint32_t)openmode;
MikamiUitOpen 2:cf42e62a97dc 51 args[2] = (uint32_t)strlen(name);
MikamiUitOpen 2:cf42e62a97dc 52 return __semihost(SYS_OPEN, args);
MikamiUitOpen 2:cf42e62a97dc 53 }
MikamiUitOpen 2:cf42e62a97dc 54
MikamiUitOpen 2:cf42e62a97dc 55 int semihost_close(FILEHANDLE fh) {
MikamiUitOpen 2:cf42e62a97dc 56 return __semihost(SYS_CLOSE, &fh);
MikamiUitOpen 2:cf42e62a97dc 57 }
MikamiUitOpen 2:cf42e62a97dc 58
MikamiUitOpen 2:cf42e62a97dc 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
MikamiUitOpen 2:cf42e62a97dc 60 if (length == 0) return 0;
MikamiUitOpen 2:cf42e62a97dc 61
MikamiUitOpen 2:cf42e62a97dc 62 uint32_t args[3];
MikamiUitOpen 2:cf42e62a97dc 63 args[0] = (uint32_t)fh;
MikamiUitOpen 2:cf42e62a97dc 64 args[1] = (uint32_t)buffer;
MikamiUitOpen 2:cf42e62a97dc 65 args[2] = (uint32_t)length;
MikamiUitOpen 2:cf42e62a97dc 66 return __semihost(SYS_WRITE, args);
MikamiUitOpen 2:cf42e62a97dc 67 }
MikamiUitOpen 2:cf42e62a97dc 68
MikamiUitOpen 2:cf42e62a97dc 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
MikamiUitOpen 2:cf42e62a97dc 70 uint32_t args[3];
MikamiUitOpen 2:cf42e62a97dc 71 args[0] = (uint32_t)fh;
MikamiUitOpen 2:cf42e62a97dc 72 args[1] = (uint32_t)buffer;
MikamiUitOpen 2:cf42e62a97dc 73 args[2] = (uint32_t)length;
MikamiUitOpen 2:cf42e62a97dc 74 return __semihost(SYS_READ, args);
MikamiUitOpen 2:cf42e62a97dc 75 }
MikamiUitOpen 2:cf42e62a97dc 76
MikamiUitOpen 2:cf42e62a97dc 77 int semihost_istty(FILEHANDLE fh) {
MikamiUitOpen 2:cf42e62a97dc 78 return __semihost(SYS_ISTTY, &fh);
MikamiUitOpen 2:cf42e62a97dc 79 }
MikamiUitOpen 2:cf42e62a97dc 80
MikamiUitOpen 2:cf42e62a97dc 81 int semihost_seek(FILEHANDLE fh, long position) {
MikamiUitOpen 2:cf42e62a97dc 82 uint32_t args[2];
MikamiUitOpen 2:cf42e62a97dc 83 args[0] = (uint32_t)fh;
MikamiUitOpen 2:cf42e62a97dc 84 args[1] = (uint32_t)position;
MikamiUitOpen 2:cf42e62a97dc 85 return __semihost(SYS_SEEK, args);
MikamiUitOpen 2:cf42e62a97dc 86 }
MikamiUitOpen 2:cf42e62a97dc 87
MikamiUitOpen 2:cf42e62a97dc 88 int semihost_ensure(FILEHANDLE fh) {
MikamiUitOpen 2:cf42e62a97dc 89 return __semihost(SYS_ENSURE, &fh);
MikamiUitOpen 2:cf42e62a97dc 90 }
MikamiUitOpen 2:cf42e62a97dc 91
MikamiUitOpen 2:cf42e62a97dc 92 long semihost_flen(FILEHANDLE fh) {
MikamiUitOpen 2:cf42e62a97dc 93 return __semihost(SYS_FLEN, &fh);
MikamiUitOpen 2:cf42e62a97dc 94 }
MikamiUitOpen 2:cf42e62a97dc 95
MikamiUitOpen 2:cf42e62a97dc 96 int semihost_remove(const char *name) {
MikamiUitOpen 2:cf42e62a97dc 97 uint32_t args[2];
MikamiUitOpen 2:cf42e62a97dc 98 args[0] = (uint32_t)name;
MikamiUitOpen 2:cf42e62a97dc 99 args[1] = (uint32_t)strlen(name);
MikamiUitOpen 2:cf42e62a97dc 100 return __semihost(SYS_REMOVE, args);
MikamiUitOpen 2:cf42e62a97dc 101 }
MikamiUitOpen 2:cf42e62a97dc 102
MikamiUitOpen 2:cf42e62a97dc 103 int semihost_rename(const char *old_name, const char *new_name) {
MikamiUitOpen 2:cf42e62a97dc 104 uint32_t args[4];
MikamiUitOpen 2:cf42e62a97dc 105 args[0] = (uint32_t)old_name;
MikamiUitOpen 2:cf42e62a97dc 106 args[1] = (uint32_t)strlen(old_name);
MikamiUitOpen 2:cf42e62a97dc 107 args[0] = (uint32_t)new_name;
MikamiUitOpen 2:cf42e62a97dc 108 args[1] = (uint32_t)strlen(new_name);
MikamiUitOpen 2:cf42e62a97dc 109 return __semihost(SYS_RENAME, args);
MikamiUitOpen 2:cf42e62a97dc 110 }
MikamiUitOpen 2:cf42e62a97dc 111 #endif
MikamiUitOpen 2:cf42e62a97dc 112
MikamiUitOpen 2:cf42e62a97dc 113 int semihost_exit(void) {
MikamiUitOpen 2:cf42e62a97dc 114 uint32_t args[4];
MikamiUitOpen 2:cf42e62a97dc 115 return __semihost(SYS_EXIT, args);
MikamiUitOpen 2:cf42e62a97dc 116 }
MikamiUitOpen 2:cf42e62a97dc 117
MikamiUitOpen 2:cf42e62a97dc 118 int semihost_uid(char *uid) {
MikamiUitOpen 2:cf42e62a97dc 119 uint32_t args[2];
MikamiUitOpen 2:cf42e62a97dc 120 args[0] = (uint32_t)uid;
MikamiUitOpen 2:cf42e62a97dc 121 args[1] = DEVICE_ID_LENGTH + 1;
MikamiUitOpen 2:cf42e62a97dc 122 return __semihost(USR_UID, &args);
MikamiUitOpen 2:cf42e62a97dc 123 }
MikamiUitOpen 2:cf42e62a97dc 124
MikamiUitOpen 2:cf42e62a97dc 125 int semihost_reset(void) {
MikamiUitOpen 2:cf42e62a97dc 126 // Does not normally return, however if used with older firmware versions
MikamiUitOpen 2:cf42e62a97dc 127 // that do not support this call it will return -1.
MikamiUitOpen 2:cf42e62a97dc 128 return __semihost(USR_RESET, NULL);
MikamiUitOpen 2:cf42e62a97dc 129 }
MikamiUitOpen 2:cf42e62a97dc 130
MikamiUitOpen 2:cf42e62a97dc 131 int semihost_vbus(void) {
MikamiUitOpen 2:cf42e62a97dc 132 return __semihost(USR_VBUS, NULL);
MikamiUitOpen 2:cf42e62a97dc 133 }
MikamiUitOpen 2:cf42e62a97dc 134
MikamiUitOpen 2:cf42e62a97dc 135 int semihost_powerdown(void) {
MikamiUitOpen 2:cf42e62a97dc 136 return __semihost(USR_POWERDOWN, NULL);
MikamiUitOpen 2:cf42e62a97dc 137 }
MikamiUitOpen 2:cf42e62a97dc 138
MikamiUitOpen 2:cf42e62a97dc 139 #if DEVICE_DEBUG_AWARENESS
MikamiUitOpen 2:cf42e62a97dc 140
MikamiUitOpen 2:cf42e62a97dc 141 int semihost_connected(void) {
MikamiUitOpen 2:cf42e62a97dc 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
MikamiUitOpen 2:cf42e62a97dc 143 }
MikamiUitOpen 2:cf42e62a97dc 144
MikamiUitOpen 2:cf42e62a97dc 145 #else
MikamiUitOpen 2:cf42e62a97dc 146 // These processors cannot know if the interface is connect, assume so:
MikamiUitOpen 2:cf42e62a97dc 147 static int is_debugger_attached = 1;
MikamiUitOpen 2:cf42e62a97dc 148
MikamiUitOpen 2:cf42e62a97dc 149 int semihost_connected(void) {
MikamiUitOpen 2:cf42e62a97dc 150 return is_debugger_attached;
MikamiUitOpen 2:cf42e62a97dc 151 }
MikamiUitOpen 2:cf42e62a97dc 152 #endif
MikamiUitOpen 2:cf42e62a97dc 153
MikamiUitOpen 2:cf42e62a97dc 154 int semihost_disabledebug(void) {
MikamiUitOpen 2:cf42e62a97dc 155 #if !(DEVICE_DEBUG_AWARENESS)
MikamiUitOpen 2:cf42e62a97dc 156 is_debugger_attached = 0;
MikamiUitOpen 2:cf42e62a97dc 157 #endif
MikamiUitOpen 2:cf42e62a97dc 158 return __semihost(USR_DISABLEDEBUG, NULL);
MikamiUitOpen 2:cf42e62a97dc 159 }
MikamiUitOpen 2:cf42e62a97dc 160
MikamiUitOpen 2:cf42e62a97dc 161 #endif
MikamiUitOpen 2:cf42e62a97dc 162