Jonne Valola / PokittoLib Featured

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   YATTT sd_map_test cPong SnowDemo ... more

PokittoLib

Library for programming Pokitto hardware

How to Use

  1. Import this library to online compiler (see button "import" on the right hand side
  2. DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
  3. Change My_settings.h according to your project
  4. Start coding!

mbed-pokitto/common/semihost_api.c@71:531419862202, 2019-12-25 (annotated)

Committer:
Pokitto
Date:
Wed Dec 25 23:59:52 2019 +0000
Revision:
71:531419862202
Parent:
5:ea7377f3d1af 
Changed Mode2 C++ refresh code (graphical errors)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 5:ea7377f3d1af 1 /* mbed Microcontroller Library
Pokitto 5:ea7377f3d1af 2 * Copyright (c) 2006-2013 ARM Limited
Pokitto 5:ea7377f3d1af 3 *
Pokitto 5:ea7377f3d1af 4 * Licensed under the Apache License, Version 2.0 (the "License");
Pokitto 5:ea7377f3d1af 5 * you may not use this file except in compliance with the License.
Pokitto 5:ea7377f3d1af 6 * You may obtain a copy of the License at
Pokitto 5:ea7377f3d1af 7 *
Pokitto 5:ea7377f3d1af 8 * http://www.apache.org/licenses/LICENSE-2.0
Pokitto 5:ea7377f3d1af 9 *
Pokitto 5:ea7377f3d1af 10 * Unless required by applicable law or agreed to in writing, software
Pokitto 5:ea7377f3d1af 11 * distributed under the License is distributed on an "AS IS" BASIS,
Pokitto 5:ea7377f3d1af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Pokitto 5:ea7377f3d1af 13 * See the License for the specific language governing permissions and
Pokitto 5:ea7377f3d1af 14 * limitations under the License.
Pokitto 5:ea7377f3d1af 15 */
Pokitto 5:ea7377f3d1af 16 #include "cmsis.h"
Pokitto 5:ea7377f3d1af 17 #include "semihost_api.h"
Pokitto 5:ea7377f3d1af 18
Pokitto 5:ea7377f3d1af 19 #include <stdint.h>
Pokitto 5:ea7377f3d1af 20 #include <string.h>
Pokitto 5:ea7377f3d1af 21
Pokitto 5:ea7377f3d1af 22 #if DEVICE_SEMIHOST
Pokitto 5:ea7377f3d1af 23
Pokitto 5:ea7377f3d1af 24 // ARM Semihosting Commands
Pokitto 5:ea7377f3d1af 25 #define SYS_OPEN (0x1)
Pokitto 5:ea7377f3d1af 26 #define SYS_CLOSE (0x2)
Pokitto 5:ea7377f3d1af 27 #define SYS_WRITE (0x5)
Pokitto 5:ea7377f3d1af 28 #define SYS_READ (0x6)
Pokitto 5:ea7377f3d1af 29 #define SYS_ISTTY (0x9)
Pokitto 5:ea7377f3d1af 30 #define SYS_SEEK (0xa)
Pokitto 5:ea7377f3d1af 31 #define SYS_ENSURE (0xb)
Pokitto 5:ea7377f3d1af 32 #define SYS_FLEN (0xc)
Pokitto 5:ea7377f3d1af 33 #define SYS_REMOVE (0xe)
Pokitto 5:ea7377f3d1af 34 #define SYS_RENAME (0xf)
Pokitto 5:ea7377f3d1af 35 #define SYS_EXIT (0x18)
Pokitto 5:ea7377f3d1af 36
Pokitto 5:ea7377f3d1af 37 // mbed Semihosting Commands
Pokitto 5:ea7377f3d1af 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
Pokitto 5:ea7377f3d1af 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
Pokitto 5:ea7377f3d1af 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
Pokitto 5:ea7377f3d1af 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
Pokitto 5:ea7377f3d1af 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
Pokitto 5:ea7377f3d1af 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
Pokitto 5:ea7377f3d1af 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
Pokitto 5:ea7377f3d1af 45
Pokitto 5:ea7377f3d1af 46 #if DEVICE_LOCALFILESYSTEM
Pokitto 5:ea7377f3d1af 47 FILEHANDLE semihost_open(const char* name, int openmode) {
Pokitto 5:ea7377f3d1af 48 uint32_t args[3];
Pokitto 5:ea7377f3d1af 49 args[0] = (uint32_t)name;
Pokitto 5:ea7377f3d1af 50 args[1] = (uint32_t)openmode;
Pokitto 5:ea7377f3d1af 51 args[2] = (uint32_t)strlen(name);
Pokitto 5:ea7377f3d1af 52 return __semihost(SYS_OPEN, args);
Pokitto 5:ea7377f3d1af 53 }
Pokitto 5:ea7377f3d1af 54
Pokitto 5:ea7377f3d1af 55 int semihost_close(FILEHANDLE fh) {
Pokitto 5:ea7377f3d1af 56 return __semihost(SYS_CLOSE, &fh);
Pokitto 5:ea7377f3d1af 57 }
Pokitto 5:ea7377f3d1af 58
Pokitto 5:ea7377f3d1af 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
Pokitto 5:ea7377f3d1af 60 if (length == 0) return 0;
Pokitto 5:ea7377f3d1af 61
Pokitto 5:ea7377f3d1af 62 uint32_t args[3];
Pokitto 5:ea7377f3d1af 63 args[0] = (uint32_t)fh;
Pokitto 5:ea7377f3d1af 64 args[1] = (uint32_t)buffer;
Pokitto 5:ea7377f3d1af 65 args[2] = (uint32_t)length;
Pokitto 5:ea7377f3d1af 66 return __semihost(SYS_WRITE, args);
Pokitto 5:ea7377f3d1af 67 }
Pokitto 5:ea7377f3d1af 68
Pokitto 5:ea7377f3d1af 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
Pokitto 5:ea7377f3d1af 70 uint32_t args[3];
Pokitto 5:ea7377f3d1af 71 args[0] = (uint32_t)fh;
Pokitto 5:ea7377f3d1af 72 args[1] = (uint32_t)buffer;
Pokitto 5:ea7377f3d1af 73 args[2] = (uint32_t)length;
Pokitto 5:ea7377f3d1af 74 return __semihost(SYS_READ, args);
Pokitto 5:ea7377f3d1af 75 }
Pokitto 5:ea7377f3d1af 76
Pokitto 5:ea7377f3d1af 77 int semihost_istty(FILEHANDLE fh) {
Pokitto 5:ea7377f3d1af 78 return __semihost(SYS_ISTTY, &fh);
Pokitto 5:ea7377f3d1af 79 }
Pokitto 5:ea7377f3d1af 80
Pokitto 5:ea7377f3d1af 81 int semihost_seek(FILEHANDLE fh, long position) {
Pokitto 5:ea7377f3d1af 82 uint32_t args[2];
Pokitto 5:ea7377f3d1af 83 args[0] = (uint32_t)fh;
Pokitto 5:ea7377f3d1af 84 args[1] = (uint32_t)position;
Pokitto 5:ea7377f3d1af 85 return __semihost(SYS_SEEK, args);
Pokitto 5:ea7377f3d1af 86 }
Pokitto 5:ea7377f3d1af 87
Pokitto 5:ea7377f3d1af 88 int semihost_ensure(FILEHANDLE fh) {
Pokitto 5:ea7377f3d1af 89 return __semihost(SYS_ENSURE, &fh);
Pokitto 5:ea7377f3d1af 90 }
Pokitto 5:ea7377f3d1af 91
Pokitto 5:ea7377f3d1af 92 long semihost_flen(FILEHANDLE fh) {
Pokitto 5:ea7377f3d1af 93 return __semihost(SYS_FLEN, &fh);
Pokitto 5:ea7377f3d1af 94 }
Pokitto 5:ea7377f3d1af 95
Pokitto 5:ea7377f3d1af 96 int semihost_remove(const char *name) {
Pokitto 5:ea7377f3d1af 97 uint32_t args[2];
Pokitto 5:ea7377f3d1af 98 args[0] = (uint32_t)name;
Pokitto 5:ea7377f3d1af 99 args[1] = (uint32_t)strlen(name);
Pokitto 5:ea7377f3d1af 100 return __semihost(SYS_REMOVE, args);
Pokitto 5:ea7377f3d1af 101 }
Pokitto 5:ea7377f3d1af 102
Pokitto 5:ea7377f3d1af 103 int semihost_rename(const char *old_name, const char *new_name) {
Pokitto 5:ea7377f3d1af 104 uint32_t args[4];
Pokitto 5:ea7377f3d1af 105 args[0] = (uint32_t)old_name;
Pokitto 5:ea7377f3d1af 106 args[1] = (uint32_t)strlen(old_name);
Pokitto 5:ea7377f3d1af 107 args[0] = (uint32_t)new_name;
Pokitto 5:ea7377f3d1af 108 args[1] = (uint32_t)strlen(new_name);
Pokitto 5:ea7377f3d1af 109 return __semihost(SYS_RENAME, args);
Pokitto 5:ea7377f3d1af 110 }
Pokitto 5:ea7377f3d1af 111 #endif
Pokitto 5:ea7377f3d1af 112
Pokitto 5:ea7377f3d1af 113 int semihost_exit(void) {
Pokitto 5:ea7377f3d1af 114 uint32_t args[4];
Pokitto 5:ea7377f3d1af 115 return __semihost(SYS_EXIT, args);
Pokitto 5:ea7377f3d1af 116 }
Pokitto 5:ea7377f3d1af 117
Pokitto 5:ea7377f3d1af 118 int semihost_uid(char *uid) {
Pokitto 5:ea7377f3d1af 119 uint32_t args[2];
Pokitto 5:ea7377f3d1af 120 args[0] = (uint32_t)uid;
Pokitto 5:ea7377f3d1af 121 args[1] = DEVICE_ID_LENGTH + 1;
Pokitto 5:ea7377f3d1af 122 return __semihost(USR_UID, &args);
Pokitto 5:ea7377f3d1af 123 }
Pokitto 5:ea7377f3d1af 124
Pokitto 5:ea7377f3d1af 125 int semihost_reset(void) {
Pokitto 5:ea7377f3d1af 126 // Does not normally return, however if used with older firmware versions
Pokitto 5:ea7377f3d1af 127 // that do not support this call it will return -1.
Pokitto 5:ea7377f3d1af 128 return __semihost(USR_RESET, NULL);
Pokitto 5:ea7377f3d1af 129 }
Pokitto 5:ea7377f3d1af 130
Pokitto 5:ea7377f3d1af 131 int semihost_vbus(void) {
Pokitto 5:ea7377f3d1af 132 return __semihost(USR_VBUS, NULL);
Pokitto 5:ea7377f3d1af 133 }
Pokitto 5:ea7377f3d1af 134
Pokitto 5:ea7377f3d1af 135 int semihost_powerdown(void) {
Pokitto 5:ea7377f3d1af 136 return __semihost(USR_POWERDOWN, NULL);
Pokitto 5:ea7377f3d1af 137 }
Pokitto 5:ea7377f3d1af 138
Pokitto 5:ea7377f3d1af 139 #if DEVICE_DEBUG_AWARENESS
Pokitto 5:ea7377f3d1af 140
Pokitto 5:ea7377f3d1af 141 int semihost_connected(void) {
Pokitto 5:ea7377f3d1af 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
Pokitto 5:ea7377f3d1af 143 }
Pokitto 5:ea7377f3d1af 144
Pokitto 5:ea7377f3d1af 145 #else
Pokitto 5:ea7377f3d1af 146 // These processors cannot know if the interface is connect, assume so:
Pokitto 5:ea7377f3d1af 147 static int is_debugger_attached = 1;
Pokitto 5:ea7377f3d1af 148
Pokitto 5:ea7377f3d1af 149 int semihost_connected(void) {
Pokitto 5:ea7377f3d1af 150 return is_debugger_attached;
Pokitto 5:ea7377f3d1af 151 }
Pokitto 5:ea7377f3d1af 152 #endif
Pokitto 5:ea7377f3d1af 153
Pokitto 5:ea7377f3d1af 154 int semihost_disabledebug(void) {
Pokitto 5:ea7377f3d1af 155 #if !(DEVICE_DEBUG_AWARENESS)
Pokitto 5:ea7377f3d1af 156 is_debugger_attached = 0;
Pokitto 5:ea7377f3d1af 157 #endif
Pokitto 5:ea7377f3d1af 158 return __semihost(USR_DISABLEDEBUG, NULL);
Pokitto 5:ea7377f3d1af 159 }
Pokitto 5:ea7377f3d1af 160
Pokitto 5:ea7377f3d1af 161 #endif
Pokitto 5:ea7377f3d1af 162