BA / Mbed OS BaBoRo_test2

Backup 1

mbed-os/drivers/SerialWireOutput.h@0:02dd72d1d465, 2018-04-24 (annotated)

Committer:
borlanic
Date:
Tue Apr 24 11:45:18 2018 +0000
Revision:
0:02dd72d1d465
BaBoRo_test2 - backup 1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:02dd72d1d465 1 /* mbed Microcontroller Library
borlanic 0:02dd72d1d465 2 * Copyright (c) 2017 ARM Limited
borlanic 0:02dd72d1d465 3 *
borlanic 0:02dd72d1d465 4 * Licensed under the Apache License, Version 2.0 (the "License");
borlanic 0:02dd72d1d465 5 * you may not use this file except in compliance with the License.
borlanic 0:02dd72d1d465 6 * You may obtain a copy of the License at
borlanic 0:02dd72d1d465 7 *
borlanic 0:02dd72d1d465 8 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:02dd72d1d465 9 *
borlanic 0:02dd72d1d465 10 * Unless required by applicable law or agreed to in writing, software
borlanic 0:02dd72d1d465 11 * distributed under the License is distributed on an "AS IS" BASIS,
borlanic 0:02dd72d1d465 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:02dd72d1d465 13 * See the License for the specific language governing permissions and
borlanic 0:02dd72d1d465 14 * limitations under the License.
borlanic 0:02dd72d1d465 15 */
borlanic 0:02dd72d1d465 16
borlanic 0:02dd72d1d465 17 #if defined(DEVICE_ITM)
borlanic 0:02dd72d1d465 18
borlanic 0:02dd72d1d465 19 #include "hal/itm_api.h"
borlanic 0:02dd72d1d465 20 #include "platform/FileHandle.h"
borlanic 0:02dd72d1d465 21
borlanic 0:02dd72d1d465 22 namespace mbed {
borlanic 0:02dd72d1d465 23
borlanic 0:02dd72d1d465 24 class SerialWireOutput : public FileHandle {
borlanic 0:02dd72d1d465 25
borlanic 0:02dd72d1d465 26 public:
borlanic 0:02dd72d1d465 27
borlanic 0:02dd72d1d465 28 SerialWireOutput(void)
borlanic 0:02dd72d1d465 29 {
borlanic 0:02dd72d1d465 30 /* Initialize ITM using internal init function. */
borlanic 0:02dd72d1d465 31 mbed_itm_init();
borlanic 0:02dd72d1d465 32 }
borlanic 0:02dd72d1d465 33
borlanic 0:02dd72d1d465 34 virtual ssize_t write(const void *buffer, size_t size)
borlanic 0:02dd72d1d465 35 {
borlanic 0:02dd72d1d465 36 const unsigned char *buf = static_cast<const unsigned char *>(buffer);
borlanic 0:02dd72d1d465 37
borlanic 0:02dd72d1d465 38 /* Send buffer one character at a time over the ITM SWO port */
borlanic 0:02dd72d1d465 39 for (size_t i = 0; i < size; i++) {
borlanic 0:02dd72d1d465 40 mbed_itm_send(ITM_PORT_SWO, buf[i]);
borlanic 0:02dd72d1d465 41 }
borlanic 0:02dd72d1d465 42 return size;
borlanic 0:02dd72d1d465 43 }
borlanic 0:02dd72d1d465 44
borlanic 0:02dd72d1d465 45 virtual ssize_t read(void *buffer, size_t size)
borlanic 0:02dd72d1d465 46 {
borlanic 0:02dd72d1d465 47 /* Reading is not supported by this file handle */
borlanic 0:02dd72d1d465 48 return -EBADF;
borlanic 0:02dd72d1d465 49 }
borlanic 0:02dd72d1d465 50
borlanic 0:02dd72d1d465 51 virtual off_t seek(off_t offset, int whence = SEEK_SET)
borlanic 0:02dd72d1d465 52 {
borlanic 0:02dd72d1d465 53 /* Seeking is not support by this file handler */
borlanic 0:02dd72d1d465 54 return -ESPIPE;
borlanic 0:02dd72d1d465 55 }
borlanic 0:02dd72d1d465 56
borlanic 0:02dd72d1d465 57 virtual off_t size()
borlanic 0:02dd72d1d465 58 {
borlanic 0:02dd72d1d465 59 /* Size is not defined for this file handle */
borlanic 0:02dd72d1d465 60 return -EINVAL;
borlanic 0:02dd72d1d465 61 }
borlanic 0:02dd72d1d465 62
borlanic 0:02dd72d1d465 63 virtual int isatty()
borlanic 0:02dd72d1d465 64 {
borlanic 0:02dd72d1d465 65 /* File handle is used for terminal output */
borlanic 0:02dd72d1d465 66 return true;
borlanic 0:02dd72d1d465 67 }
borlanic 0:02dd72d1d465 68
borlanic 0:02dd72d1d465 69 virtual int close()
borlanic 0:02dd72d1d465 70 {
borlanic 0:02dd72d1d465 71 return 0;
borlanic 0:02dd72d1d465 72 }
borlanic 0:02dd72d1d465 73 };
borlanic 0:02dd72d1d465 74
borlanic 0:02dd72d1d465 75 } // namespace mbed
borlanic 0:02dd72d1d465 76
borlanic 0:02dd72d1d465 77 #endif