From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.
Dependents: motor_driver motor_driver_screaming_fix
platform/mbed_semihost_api.c
- Committer:
- saloutos
- Date:
- 2020-11-26
- Revision:
- 0:083111ae2a11
File content as of revision 0:083111ae2a11:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "cmsis.h" #include "platform/mbed_semihost_api.h" #include <stdint.h> #include <string.h> #if DEVICE_SEMIHOST // ARM Semihosting Commands #define SYS_OPEN (0x1) #define SYS_CLOSE (0x2) #define SYS_WRITE (0x5) #define SYS_READ (0x6) #define SYS_ISTTY (0x9) #define SYS_SEEK (0xa) #define SYS_ENSURE (0xb) #define SYS_FLEN (0xc) #define SYS_REMOVE (0xe) #define SYS_RENAME (0xf) #define SYS_EXIT (0x18) // mbed Semihosting Commands #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0) #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1) #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2) #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3) #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4) #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5) #if DEVICE_LOCALFILESYSTEM FILEHANDLE semihost_open(const char* name, int openmode) { uint32_t args[3]; args[0] = (uint32_t)name; args[1] = (uint32_t)openmode; args[2] = (uint32_t)strlen(name); return __semihost(SYS_OPEN, args); } int semihost_close(FILEHANDLE fh) { return __semihost(SYS_CLOSE, &fh); } int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) { if (length == 0) return 0; uint32_t args[3]; args[0] = (uint32_t)fh; args[1] = (uint32_t)buffer; args[2] = (uint32_t)length; return __semihost(SYS_WRITE, args); } int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) { uint32_t args[3]; args[0] = (uint32_t)fh; args[1] = (uint32_t)buffer; args[2] = (uint32_t)length; return __semihost(SYS_READ, args); } int semihost_istty(FILEHANDLE fh) { return __semihost(SYS_ISTTY, &fh); } int semihost_seek(FILEHANDLE fh, long position) { uint32_t args[2]; args[0] = (uint32_t)fh; args[1] = (uint32_t)position; return __semihost(SYS_SEEK, args); } int semihost_ensure(FILEHANDLE fh) { return __semihost(SYS_ENSURE, &fh); } long semihost_flen(FILEHANDLE fh) { return __semihost(SYS_FLEN, &fh); } int semihost_remove(const char *name) { uint32_t args[2]; args[0] = (uint32_t)name; args[1] = (uint32_t)strlen(name); return __semihost(SYS_REMOVE, args); } int semihost_rename(const char *old_name, const char *new_name) { uint32_t args[4]; args[0] = (uint32_t)old_name; args[1] = (uint32_t)strlen(old_name); args[0] = (uint32_t)new_name; args[1] = (uint32_t)strlen(new_name); return __semihost(SYS_RENAME, args); } #endif int semihost_exit(void) { uint32_t args[4]; return __semihost(SYS_EXIT, args); } int semihost_uid(char *uid) { uint32_t args[2]; args[0] = (uint32_t)uid; args[1] = DEVICE_ID_LENGTH + 1; return __semihost(USR_UID, &args); } int semihost_reset(void) { // Does not normally return, however if used with older firmware versions // that do not support this call it will return -1. return __semihost(USR_RESET, NULL); } int semihost_vbus(void) { return __semihost(USR_VBUS, NULL); } int semihost_powerdown(void) { return __semihost(USR_POWERDOWN, NULL); } #if DEVICE_DEBUG_AWARENESS int semihost_connected(void) { return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0; } #else // These processors cannot know if the interface is connect, assume so: static int is_debugger_attached = 1; int semihost_connected(void) { return is_debugger_attached; } #endif int semihost_disabledebug(void) { uint32_t args[1]; #if !(DEVICE_DEBUG_AWARENESS) is_debugger_attached = 0; #endif return __semihost(USR_DISABLEDEBUG, &args); } #endif