BA / Mbed OS BaBoRo1

Erste version der Software für der Prototyp

mbed-os/drivers/SerialWireOutput.h@0:380207fcb5c1, 2018-03-29 (annotated)

Committer:
borlanic
Date:
Thu Mar 29 07:02:09 2018 +0000
Revision:
0:380207fcb5c1
Encoder, IMU --> OK; Controller --> in bearbeitung

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:380207fcb5c1 1 /* mbed Microcontroller Library
borlanic 0:380207fcb5c1 2 * Copyright (c) 2017 ARM Limited
borlanic 0:380207fcb5c1 3 *
borlanic 0:380207fcb5c1 4 * Licensed under the Apache License, Version 2.0 (the "License");
borlanic 0:380207fcb5c1 5 * you may not use this file except in compliance with the License.
borlanic 0:380207fcb5c1 6 * You may obtain a copy of the License at
borlanic 0:380207fcb5c1 7 *
borlanic 0:380207fcb5c1 8 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:380207fcb5c1 9 *
borlanic 0:380207fcb5c1 10 * Unless required by applicable law or agreed to in writing, software
borlanic 0:380207fcb5c1 11 * distributed under the License is distributed on an "AS IS" BASIS,
borlanic 0:380207fcb5c1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:380207fcb5c1 13 * See the License for the specific language governing permissions and
borlanic 0:380207fcb5c1 14 * limitations under the License.
borlanic 0:380207fcb5c1 15 */
borlanic 0:380207fcb5c1 16
borlanic 0:380207fcb5c1 17 #if defined(DEVICE_ITM)
borlanic 0:380207fcb5c1 18
borlanic 0:380207fcb5c1 19 #include "hal/itm_api.h"
borlanic 0:380207fcb5c1 20 #include "platform/FileHandle.h"
borlanic 0:380207fcb5c1 21
borlanic 0:380207fcb5c1 22 namespace mbed {
borlanic 0:380207fcb5c1 23
borlanic 0:380207fcb5c1 24 class SerialWireOutput : public FileHandle {
borlanic 0:380207fcb5c1 25
borlanic 0:380207fcb5c1 26 public:
borlanic 0:380207fcb5c1 27
borlanic 0:380207fcb5c1 28 SerialWireOutput(void)
borlanic 0:380207fcb5c1 29 {
borlanic 0:380207fcb5c1 30 /* Initialize ITM using internal init function. */
borlanic 0:380207fcb5c1 31 mbed_itm_init();
borlanic 0:380207fcb5c1 32 }
borlanic 0:380207fcb5c1 33
borlanic 0:380207fcb5c1 34 virtual ssize_t write(const void *buffer, size_t size)
borlanic 0:380207fcb5c1 35 {
borlanic 0:380207fcb5c1 36 const unsigned char *buf = static_cast<const unsigned char *>(buffer);
borlanic 0:380207fcb5c1 37
borlanic 0:380207fcb5c1 38 /* Send buffer one character at a time over the ITM SWO port */
borlanic 0:380207fcb5c1 39 for (size_t i = 0; i < size; i++) {
borlanic 0:380207fcb5c1 40 mbed_itm_send(ITM_PORT_SWO, buf[i]);
borlanic 0:380207fcb5c1 41 }
borlanic 0:380207fcb5c1 42 return size;
borlanic 0:380207fcb5c1 43 }
borlanic 0:380207fcb5c1 44
borlanic 0:380207fcb5c1 45 virtual ssize_t read(void *buffer, size_t size)
borlanic 0:380207fcb5c1 46 {
borlanic 0:380207fcb5c1 47 /* Reading is not supported by this file handle */
borlanic 0:380207fcb5c1 48 return -EBADF;
borlanic 0:380207fcb5c1 49 }
borlanic 0:380207fcb5c1 50
borlanic 0:380207fcb5c1 51 virtual off_t seek(off_t offset, int whence = SEEK_SET)
borlanic 0:380207fcb5c1 52 {
borlanic 0:380207fcb5c1 53 /* Seeking is not support by this file handler */
borlanic 0:380207fcb5c1 54 return -ESPIPE;
borlanic 0:380207fcb5c1 55 }
borlanic 0:380207fcb5c1 56
borlanic 0:380207fcb5c1 57 virtual off_t size()
borlanic 0:380207fcb5c1 58 {
borlanic 0:380207fcb5c1 59 /* Size is not defined for this file handle */
borlanic 0:380207fcb5c1 60 return -EINVAL;
borlanic 0:380207fcb5c1 61 }
borlanic 0:380207fcb5c1 62
borlanic 0:380207fcb5c1 63 virtual int isatty()
borlanic 0:380207fcb5c1 64 {
borlanic 0:380207fcb5c1 65 /* File handle is used for terminal output */
borlanic 0:380207fcb5c1 66 return true;
borlanic 0:380207fcb5c1 67 }
borlanic 0:380207fcb5c1 68
borlanic 0:380207fcb5c1 69 virtual int close()
borlanic 0:380207fcb5c1 70 {
borlanic 0:380207fcb5c1 71 return 0;
borlanic 0:380207fcb5c1 72 }
borlanic 0:380207fcb5c1 73 };
borlanic 0:380207fcb5c1 74
borlanic 0:380207fcb5c1 75 } // namespace mbed
borlanic 0:380207fcb5c1 76
borlanic 0:380207fcb5c1 77 #endif