Yihui Xiong / BLE_NODE_TEST

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Dependencies:   BLE_API nRF51822

Fork of BLE_LoopbackUART by Bluetooth Low Energy

mbed-src/common/semihost_api.c@9:05f0b5a3a70a, 2014-10-29 (annotated)

Committer:
yihui
Date:
Wed Oct 29 06:23:47 2014 +0000
Revision:
9:05f0b5a3a70a
initial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 9:05f0b5a3a70a 1 /* mbed Microcontroller Library
yihui 9:05f0b5a3a70a 2 * Copyright (c) 2006-2013 ARM Limited
yihui 9:05f0b5a3a70a 3 *
yihui 9:05f0b5a3a70a 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 9:05f0b5a3a70a 5 * you may not use this file except in compliance with the License.
yihui 9:05f0b5a3a70a 6 * You may obtain a copy of the License at
yihui 9:05f0b5a3a70a 7 *
yihui 9:05f0b5a3a70a 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 9:05f0b5a3a70a 9 *
yihui 9:05f0b5a3a70a 10 * Unless required by applicable law or agreed to in writing, software
yihui 9:05f0b5a3a70a 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 9:05f0b5a3a70a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 9:05f0b5a3a70a 13 * See the License for the specific language governing permissions and
yihui 9:05f0b5a3a70a 14 * limitations under the License.
yihui 9:05f0b5a3a70a 15 */
yihui 9:05f0b5a3a70a 16 #include "cmsis.h"
yihui 9:05f0b5a3a70a 17 #include "semihost_api.h"
yihui 9:05f0b5a3a70a 18
yihui 9:05f0b5a3a70a 19 #include <stdint.h>
yihui 9:05f0b5a3a70a 20 #include <string.h>
yihui 9:05f0b5a3a70a 21
yihui 9:05f0b5a3a70a 22 #if DEVICE_SEMIHOST
yihui 9:05f0b5a3a70a 23
yihui 9:05f0b5a3a70a 24 // ARM Semihosting Commands
yihui 9:05f0b5a3a70a 25 #define SYS_OPEN (0x1)
yihui 9:05f0b5a3a70a 26 #define SYS_CLOSE (0x2)
yihui 9:05f0b5a3a70a 27 #define SYS_WRITE (0x5)
yihui 9:05f0b5a3a70a 28 #define SYS_READ (0x6)
yihui 9:05f0b5a3a70a 29 #define SYS_ISTTY (0x9)
yihui 9:05f0b5a3a70a 30 #define SYS_SEEK (0xa)
yihui 9:05f0b5a3a70a 31 #define SYS_ENSURE (0xb)
yihui 9:05f0b5a3a70a 32 #define SYS_FLEN (0xc)
yihui 9:05f0b5a3a70a 33 #define SYS_REMOVE (0xe)
yihui 9:05f0b5a3a70a 34 #define SYS_RENAME (0xf)
yihui 9:05f0b5a3a70a 35 #define SYS_EXIT (0x18)
yihui 9:05f0b5a3a70a 36
yihui 9:05f0b5a3a70a 37 // mbed Semihosting Commands
yihui 9:05f0b5a3a70a 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
yihui 9:05f0b5a3a70a 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
yihui 9:05f0b5a3a70a 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
yihui 9:05f0b5a3a70a 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
yihui 9:05f0b5a3a70a 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
yihui 9:05f0b5a3a70a 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
yihui 9:05f0b5a3a70a 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
yihui 9:05f0b5a3a70a 45
yihui 9:05f0b5a3a70a 46 #if DEVICE_LOCALFILESYSTEM
yihui 9:05f0b5a3a70a 47 FILEHANDLE semihost_open(const char* name, int openmode) {
yihui 9:05f0b5a3a70a 48 uint32_t args[3];
yihui 9:05f0b5a3a70a 49 args[0] = (uint32_t)name;
yihui 9:05f0b5a3a70a 50 args[1] = (uint32_t)openmode;
yihui 9:05f0b5a3a70a 51 args[2] = (uint32_t)strlen(name);
yihui 9:05f0b5a3a70a 52 return __semihost(SYS_OPEN, args);
yihui 9:05f0b5a3a70a 53 }
yihui 9:05f0b5a3a70a 54
yihui 9:05f0b5a3a70a 55 int semihost_close(FILEHANDLE fh) {
yihui 9:05f0b5a3a70a 56 return __semihost(SYS_CLOSE, &fh);
yihui 9:05f0b5a3a70a 57 }
yihui 9:05f0b5a3a70a 58
yihui 9:05f0b5a3a70a 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
yihui 9:05f0b5a3a70a 60 if (length == 0) return 0;
yihui 9:05f0b5a3a70a 61
yihui 9:05f0b5a3a70a 62 uint32_t args[3];
yihui 9:05f0b5a3a70a 63 args[0] = (uint32_t)fh;
yihui 9:05f0b5a3a70a 64 args[1] = (uint32_t)buffer;
yihui 9:05f0b5a3a70a 65 args[2] = (uint32_t)length;
yihui 9:05f0b5a3a70a 66 return __semihost(SYS_WRITE, args);
yihui 9:05f0b5a3a70a 67 }
yihui 9:05f0b5a3a70a 68
yihui 9:05f0b5a3a70a 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
yihui 9:05f0b5a3a70a 70 uint32_t args[3];
yihui 9:05f0b5a3a70a 71 args[0] = (uint32_t)fh;
yihui 9:05f0b5a3a70a 72 args[1] = (uint32_t)buffer;
yihui 9:05f0b5a3a70a 73 args[2] = (uint32_t)length;
yihui 9:05f0b5a3a70a 74 return __semihost(SYS_READ, args);
yihui 9:05f0b5a3a70a 75 }
yihui 9:05f0b5a3a70a 76
yihui 9:05f0b5a3a70a 77 int semihost_istty(FILEHANDLE fh) {
yihui 9:05f0b5a3a70a 78 return __semihost(SYS_ISTTY, &fh);
yihui 9:05f0b5a3a70a 79 }
yihui 9:05f0b5a3a70a 80
yihui 9:05f0b5a3a70a 81 int semihost_seek(FILEHANDLE fh, long position) {
yihui 9:05f0b5a3a70a 82 uint32_t args[2];
yihui 9:05f0b5a3a70a 83 args[0] = (uint32_t)fh;
yihui 9:05f0b5a3a70a 84 args[1] = (uint32_t)position;
yihui 9:05f0b5a3a70a 85 return __semihost(SYS_SEEK, args);
yihui 9:05f0b5a3a70a 86 }
yihui 9:05f0b5a3a70a 87
yihui 9:05f0b5a3a70a 88 int semihost_ensure(FILEHANDLE fh) {
yihui 9:05f0b5a3a70a 89 return __semihost(SYS_ENSURE, &fh);
yihui 9:05f0b5a3a70a 90 }
yihui 9:05f0b5a3a70a 91
yihui 9:05f0b5a3a70a 92 long semihost_flen(FILEHANDLE fh) {
yihui 9:05f0b5a3a70a 93 return __semihost(SYS_FLEN, &fh);
yihui 9:05f0b5a3a70a 94 }
yihui 9:05f0b5a3a70a 95
yihui 9:05f0b5a3a70a 96 int semihost_remove(const char *name) {
yihui 9:05f0b5a3a70a 97 uint32_t args[2];
yihui 9:05f0b5a3a70a 98 args[0] = (uint32_t)name;
yihui 9:05f0b5a3a70a 99 args[1] = (uint32_t)strlen(name);
yihui 9:05f0b5a3a70a 100 return __semihost(SYS_REMOVE, args);
yihui 9:05f0b5a3a70a 101 }
yihui 9:05f0b5a3a70a 102
yihui 9:05f0b5a3a70a 103 int semihost_rename(const char *old_name, const char *new_name) {
yihui 9:05f0b5a3a70a 104 uint32_t args[4];
yihui 9:05f0b5a3a70a 105 args[0] = (uint32_t)old_name;
yihui 9:05f0b5a3a70a 106 args[1] = (uint32_t)strlen(old_name);
yihui 9:05f0b5a3a70a 107 args[0] = (uint32_t)new_name;
yihui 9:05f0b5a3a70a 108 args[1] = (uint32_t)strlen(new_name);
yihui 9:05f0b5a3a70a 109 return __semihost(SYS_RENAME, args);
yihui 9:05f0b5a3a70a 110 }
yihui 9:05f0b5a3a70a 111 #endif
yihui 9:05f0b5a3a70a 112
yihui 9:05f0b5a3a70a 113 int semihost_exit(void) {
yihui 9:05f0b5a3a70a 114 uint32_t args[4];
yihui 9:05f0b5a3a70a 115 return __semihost(SYS_EXIT, args);
yihui 9:05f0b5a3a70a 116 }
yihui 9:05f0b5a3a70a 117
yihui 9:05f0b5a3a70a 118 int semihost_uid(char *uid) {
yihui 9:05f0b5a3a70a 119 uint32_t args[2];
yihui 9:05f0b5a3a70a 120 args[0] = (uint32_t)uid;
yihui 9:05f0b5a3a70a 121 args[1] = DEVICE_ID_LENGTH + 1;
yihui 9:05f0b5a3a70a 122 return __semihost(USR_UID, &args);
yihui 9:05f0b5a3a70a 123 }
yihui 9:05f0b5a3a70a 124
yihui 9:05f0b5a3a70a 125 int semihost_reset(void) {
yihui 9:05f0b5a3a70a 126 // Does not normally return, however if used with older firmware versions
yihui 9:05f0b5a3a70a 127 // that do not support this call it will return -1.
yihui 9:05f0b5a3a70a 128 return __semihost(USR_RESET, NULL);
yihui 9:05f0b5a3a70a 129 }
yihui 9:05f0b5a3a70a 130
yihui 9:05f0b5a3a70a 131 int semihost_vbus(void) {
yihui 9:05f0b5a3a70a 132 return __semihost(USR_VBUS, NULL);
yihui 9:05f0b5a3a70a 133 }
yihui 9:05f0b5a3a70a 134
yihui 9:05f0b5a3a70a 135 int semihost_powerdown(void) {
yihui 9:05f0b5a3a70a 136 return __semihost(USR_POWERDOWN, NULL);
yihui 9:05f0b5a3a70a 137 }
yihui 9:05f0b5a3a70a 138
yihui 9:05f0b5a3a70a 139 #if DEVICE_DEBUG_AWARENESS
yihui 9:05f0b5a3a70a 140
yihui 9:05f0b5a3a70a 141 int semihost_connected(void) {
yihui 9:05f0b5a3a70a 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
yihui 9:05f0b5a3a70a 143 }
yihui 9:05f0b5a3a70a 144
yihui 9:05f0b5a3a70a 145 #else
yihui 9:05f0b5a3a70a 146 // These processors cannot know if the interface is connect, assume so:
yihui 9:05f0b5a3a70a 147 static int is_debugger_attached = 1;
yihui 9:05f0b5a3a70a 148
yihui 9:05f0b5a3a70a 149 int semihost_connected(void) {
yihui 9:05f0b5a3a70a 150 return is_debugger_attached;
yihui 9:05f0b5a3a70a 151 }
yihui 9:05f0b5a3a70a 152 #endif
yihui 9:05f0b5a3a70a 153
yihui 9:05f0b5a3a70a 154 int semihost_disabledebug(void) {
yihui 9:05f0b5a3a70a 155 #if !(DEVICE_DEBUG_AWARENESS)
yihui 9:05f0b5a3a70a 156 is_debugger_attached = 0;
yihui 9:05f0b5a3a70a 157 #endif
yihui 9:05f0b5a3a70a 158 return __semihost(USR_DISABLEDEBUG, NULL);
yihui 9:05f0b5a3a70a 159 }
yihui 9:05f0b5a3a70a 160
yihui 9:05f0b5a3a70a 161 #endif
yihui 9:05f0b5a3a70a 162