philippe s. / mbed-dev

mbed library sources. Supersedes mbed-src. Fixes analogIn and analogOut problems for TARGET_STM32F3. Tested on NUCLEO-F303K8, using 3 analogout and 7 analogin channels simultaneously. Added ability for STM32F334R8 and STM32F303K8 to use all three channels of DAC simultaneously. https://developer.mbed.org/users/StevieWray/code/mbed-dev/ Added ability for TARGET_STM32F3 to use more than one ADC simultaneously. https://developer.mbed.org/questions/67997/NUCLEO-F303K8ADC/

Fork of mbed-dev by mbed official

common/semihost_api.c@70:b3a5af880266, 2016-02-23 (annotated)

Committer:
neurofun
Date:
Tue Feb 23 21:59:35 2016 +0000
Revision:
70:b3a5af880266
Parent:
0:9b334a45a8ff 
Edited DAC routines to allow for the simultaneous use of three channels from two DACs as seen on the STM32F334R8 and STM32F303K8. Edited ADC routines to allow for the simultaneous use of more than one ADC.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "cmsis.h"
bogdanm 0:9b334a45a8ff 17 #include "semihost_api.h"
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include <stdint.h>
bogdanm 0:9b334a45a8ff 20 #include <string.h>
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 #if DEVICE_SEMIHOST
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 // ARM Semihosting Commands
bogdanm 0:9b334a45a8ff 25 #define SYS_OPEN (0x1)
bogdanm 0:9b334a45a8ff 26 #define SYS_CLOSE (0x2)
bogdanm 0:9b334a45a8ff 27 #define SYS_WRITE (0x5)
bogdanm 0:9b334a45a8ff 28 #define SYS_READ (0x6)
bogdanm 0:9b334a45a8ff 29 #define SYS_ISTTY (0x9)
bogdanm 0:9b334a45a8ff 30 #define SYS_SEEK (0xa)
bogdanm 0:9b334a45a8ff 31 #define SYS_ENSURE (0xb)
bogdanm 0:9b334a45a8ff 32 #define SYS_FLEN (0xc)
bogdanm 0:9b334a45a8ff 33 #define SYS_REMOVE (0xe)
bogdanm 0:9b334a45a8ff 34 #define SYS_RENAME (0xf)
bogdanm 0:9b334a45a8ff 35 #define SYS_EXIT (0x18)
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 // mbed Semihosting Commands
bogdanm 0:9b334a45a8ff 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
bogdanm 0:9b334a45a8ff 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
bogdanm 0:9b334a45a8ff 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
bogdanm 0:9b334a45a8ff 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
bogdanm 0:9b334a45a8ff 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
bogdanm 0:9b334a45a8ff 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
bogdanm 0:9b334a45a8ff 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 #if DEVICE_LOCALFILESYSTEM
bogdanm 0:9b334a45a8ff 47 FILEHANDLE semihost_open(const char* name, int openmode) {
bogdanm 0:9b334a45a8ff 48 uint32_t args[3];
bogdanm 0:9b334a45a8ff 49 args[0] = (uint32_t)name;
bogdanm 0:9b334a45a8ff 50 args[1] = (uint32_t)openmode;
bogdanm 0:9b334a45a8ff 51 args[2] = (uint32_t)strlen(name);
bogdanm 0:9b334a45a8ff 52 return __semihost(SYS_OPEN, args);
bogdanm 0:9b334a45a8ff 53 }
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 int semihost_close(FILEHANDLE fh) {
bogdanm 0:9b334a45a8ff 56 return __semihost(SYS_CLOSE, &fh);
bogdanm 0:9b334a45a8ff 57 }
bogdanm 0:9b334a45a8ff 58
bogdanm 0:9b334a45a8ff 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
bogdanm 0:9b334a45a8ff 60 if (length == 0) return 0;
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 uint32_t args[3];
bogdanm 0:9b334a45a8ff 63 args[0] = (uint32_t)fh;
bogdanm 0:9b334a45a8ff 64 args[1] = (uint32_t)buffer;
bogdanm 0:9b334a45a8ff 65 args[2] = (uint32_t)length;
bogdanm 0:9b334a45a8ff 66 return __semihost(SYS_WRITE, args);
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
bogdanm 0:9b334a45a8ff 70 uint32_t args[3];
bogdanm 0:9b334a45a8ff 71 args[0] = (uint32_t)fh;
bogdanm 0:9b334a45a8ff 72 args[1] = (uint32_t)buffer;
bogdanm 0:9b334a45a8ff 73 args[2] = (uint32_t)length;
bogdanm 0:9b334a45a8ff 74 return __semihost(SYS_READ, args);
bogdanm 0:9b334a45a8ff 75 }
bogdanm 0:9b334a45a8ff 76
bogdanm 0:9b334a45a8ff 77 int semihost_istty(FILEHANDLE fh) {
bogdanm 0:9b334a45a8ff 78 return __semihost(SYS_ISTTY, &fh);
bogdanm 0:9b334a45a8ff 79 }
bogdanm 0:9b334a45a8ff 80
bogdanm 0:9b334a45a8ff 81 int semihost_seek(FILEHANDLE fh, long position) {
bogdanm 0:9b334a45a8ff 82 uint32_t args[2];
bogdanm 0:9b334a45a8ff 83 args[0] = (uint32_t)fh;
bogdanm 0:9b334a45a8ff 84 args[1] = (uint32_t)position;
bogdanm 0:9b334a45a8ff 85 return __semihost(SYS_SEEK, args);
bogdanm 0:9b334a45a8ff 86 }
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 int semihost_ensure(FILEHANDLE fh) {
bogdanm 0:9b334a45a8ff 89 return __semihost(SYS_ENSURE, &fh);
bogdanm 0:9b334a45a8ff 90 }
bogdanm 0:9b334a45a8ff 91
bogdanm 0:9b334a45a8ff 92 long semihost_flen(FILEHANDLE fh) {
bogdanm 0:9b334a45a8ff 93 return __semihost(SYS_FLEN, &fh);
bogdanm 0:9b334a45a8ff 94 }
bogdanm 0:9b334a45a8ff 95
bogdanm 0:9b334a45a8ff 96 int semihost_remove(const char *name) {
bogdanm 0:9b334a45a8ff 97 uint32_t args[2];
bogdanm 0:9b334a45a8ff 98 args[0] = (uint32_t)name;
bogdanm 0:9b334a45a8ff 99 args[1] = (uint32_t)strlen(name);
bogdanm 0:9b334a45a8ff 100 return __semihost(SYS_REMOVE, args);
bogdanm 0:9b334a45a8ff 101 }
bogdanm 0:9b334a45a8ff 102
bogdanm 0:9b334a45a8ff 103 int semihost_rename(const char *old_name, const char *new_name) {
bogdanm 0:9b334a45a8ff 104 uint32_t args[4];
bogdanm 0:9b334a45a8ff 105 args[0] = (uint32_t)old_name;
bogdanm 0:9b334a45a8ff 106 args[1] = (uint32_t)strlen(old_name);
bogdanm 0:9b334a45a8ff 107 args[0] = (uint32_t)new_name;
bogdanm 0:9b334a45a8ff 108 args[1] = (uint32_t)strlen(new_name);
bogdanm 0:9b334a45a8ff 109 return __semihost(SYS_RENAME, args);
bogdanm 0:9b334a45a8ff 110 }
bogdanm 0:9b334a45a8ff 111 #endif
bogdanm 0:9b334a45a8ff 112
bogdanm 0:9b334a45a8ff 113 int semihost_exit(void) {
bogdanm 0:9b334a45a8ff 114 uint32_t args[4];
bogdanm 0:9b334a45a8ff 115 return __semihost(SYS_EXIT, args);
bogdanm 0:9b334a45a8ff 116 }
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118 int semihost_uid(char *uid) {
bogdanm 0:9b334a45a8ff 119 uint32_t args[2];
bogdanm 0:9b334a45a8ff 120 args[0] = (uint32_t)uid;
bogdanm 0:9b334a45a8ff 121 args[1] = DEVICE_ID_LENGTH + 1;
bogdanm 0:9b334a45a8ff 122 return __semihost(USR_UID, &args);
bogdanm 0:9b334a45a8ff 123 }
bogdanm 0:9b334a45a8ff 124
bogdanm 0:9b334a45a8ff 125 int semihost_reset(void) {
bogdanm 0:9b334a45a8ff 126 // Does not normally return, however if used with older firmware versions
bogdanm 0:9b334a45a8ff 127 // that do not support this call it will return -1.
bogdanm 0:9b334a45a8ff 128 return __semihost(USR_RESET, NULL);
bogdanm 0:9b334a45a8ff 129 }
bogdanm 0:9b334a45a8ff 130
bogdanm 0:9b334a45a8ff 131 int semihost_vbus(void) {
bogdanm 0:9b334a45a8ff 132 return __semihost(USR_VBUS, NULL);
bogdanm 0:9b334a45a8ff 133 }
bogdanm 0:9b334a45a8ff 134
bogdanm 0:9b334a45a8ff 135 int semihost_powerdown(void) {
bogdanm 0:9b334a45a8ff 136 return __semihost(USR_POWERDOWN, NULL);
bogdanm 0:9b334a45a8ff 137 }
bogdanm 0:9b334a45a8ff 138
bogdanm 0:9b334a45a8ff 139 #if DEVICE_DEBUG_AWARENESS
bogdanm 0:9b334a45a8ff 140
bogdanm 0:9b334a45a8ff 141 int semihost_connected(void) {
bogdanm 0:9b334a45a8ff 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
bogdanm 0:9b334a45a8ff 143 }
bogdanm 0:9b334a45a8ff 144
bogdanm 0:9b334a45a8ff 145 #else
bogdanm 0:9b334a45a8ff 146 // These processors cannot know if the interface is connect, assume so:
bogdanm 0:9b334a45a8ff 147 static int is_debugger_attached = 1;
bogdanm 0:9b334a45a8ff 148
bogdanm 0:9b334a45a8ff 149 int semihost_connected(void) {
bogdanm 0:9b334a45a8ff 150 return is_debugger_attached;
bogdanm 0:9b334a45a8ff 151 }
bogdanm 0:9b334a45a8ff 152 #endif
bogdanm 0:9b334a45a8ff 153
bogdanm 0:9b334a45a8ff 154 int semihost_disabledebug(void) {
bogdanm 0:9b334a45a8ff 155 #if !(DEVICE_DEBUG_AWARENESS)
bogdanm 0:9b334a45a8ff 156 is_debugger_attached = 0;
bogdanm 0:9b334a45a8ff 157 #endif
bogdanm 0:9b334a45a8ff 158 return __semihost(USR_DISABLEDEBUG, NULL);
bogdanm 0:9b334a45a8ff 159 }
bogdanm 0:9b334a45a8ff 160
bogdanm 0:9b334a45a8ff 161 #endif
bogdanm 0:9b334a45a8ff 162