mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

drivers/SerialWireOutput.h@186:707f6e361f3e, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 16:45:37 2018 +0100
Revision:
186:707f6e361f3e
Parent:
184:08ed48f1de7f
Child:
187:0387e8f68319
mbed-dev library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 184:08ed48f1de7f 1 /* mbed Microcontroller Library
AnnaBridge 184:08ed48f1de7f 2 * Copyright (c) 2017 ARM Limited
AnnaBridge 184:08ed48f1de7f 3 *
AnnaBridge 184:08ed48f1de7f 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 184:08ed48f1de7f 5 * you may not use this file except in compliance with the License.
AnnaBridge 184:08ed48f1de7f 6 * You may obtain a copy of the License at
AnnaBridge 184:08ed48f1de7f 7 *
AnnaBridge 184:08ed48f1de7f 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 184:08ed48f1de7f 9 *
AnnaBridge 184:08ed48f1de7f 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 184:08ed48f1de7f 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 184:08ed48f1de7f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 184:08ed48f1de7f 13 * See the License for the specific language governing permissions and
AnnaBridge 184:08ed48f1de7f 14 * limitations under the License.
AnnaBridge 184:08ed48f1de7f 15 */
AnnaBridge 184:08ed48f1de7f 16
AnnaBridge 184:08ed48f1de7f 17 #if defined(DEVICE_ITM)
AnnaBridge 184:08ed48f1de7f 18
AnnaBridge 184:08ed48f1de7f 19 #include "hal/itm_api.h"
AnnaBridge 184:08ed48f1de7f 20 #include "platform/FileHandle.h"
AnnaBridge 184:08ed48f1de7f 21
Anna Bridge 186:707f6e361f3e 22 namespace mbed {
Anna Bridge 186:707f6e361f3e 23
AnnaBridge 184:08ed48f1de7f 24 class SerialWireOutput : public FileHandle {
Anna Bridge 186:707f6e361f3e 25
AnnaBridge 184:08ed48f1de7f 26 public:
Anna Bridge 186:707f6e361f3e 27
AnnaBridge 184:08ed48f1de7f 28 SerialWireOutput(void)
AnnaBridge 184:08ed48f1de7f 29 {
AnnaBridge 184:08ed48f1de7f 30 /* Initialize ITM using internal init function. */
AnnaBridge 184:08ed48f1de7f 31 mbed_itm_init();
AnnaBridge 184:08ed48f1de7f 32 }
AnnaBridge 184:08ed48f1de7f 33
AnnaBridge 184:08ed48f1de7f 34 virtual ssize_t write(const void *buffer, size_t size)
AnnaBridge 184:08ed48f1de7f 35 {
AnnaBridge 184:08ed48f1de7f 36 const unsigned char *buf = static_cast<const unsigned char *>(buffer);
AnnaBridge 184:08ed48f1de7f 37
AnnaBridge 184:08ed48f1de7f 38 /* Send buffer one character at a time over the ITM SWO port */
AnnaBridge 184:08ed48f1de7f 39 for (size_t i = 0; i < size; i++) {
AnnaBridge 184:08ed48f1de7f 40 mbed_itm_send(ITM_PORT_SWO, buf[i]);
AnnaBridge 184:08ed48f1de7f 41 }
AnnaBridge 184:08ed48f1de7f 42 return size;
AnnaBridge 184:08ed48f1de7f 43 }
AnnaBridge 184:08ed48f1de7f 44
AnnaBridge 184:08ed48f1de7f 45 virtual ssize_t read(void *buffer, size_t size)
AnnaBridge 184:08ed48f1de7f 46 {
AnnaBridge 184:08ed48f1de7f 47 /* Reading is not supported by this file handle */
AnnaBridge 184:08ed48f1de7f 48 return -EBADF;
AnnaBridge 184:08ed48f1de7f 49 }
AnnaBridge 184:08ed48f1de7f 50
AnnaBridge 184:08ed48f1de7f 51 virtual off_t seek(off_t offset, int whence = SEEK_SET)
AnnaBridge 184:08ed48f1de7f 52 {
AnnaBridge 184:08ed48f1de7f 53 /* Seeking is not support by this file handler */
AnnaBridge 184:08ed48f1de7f 54 return -ESPIPE;
AnnaBridge 184:08ed48f1de7f 55 }
AnnaBridge 184:08ed48f1de7f 56
AnnaBridge 184:08ed48f1de7f 57 virtual off_t size()
AnnaBridge 184:08ed48f1de7f 58 {
AnnaBridge 184:08ed48f1de7f 59 /* Size is not defined for this file handle */
AnnaBridge 184:08ed48f1de7f 60 return -EINVAL;
AnnaBridge 184:08ed48f1de7f 61 }
AnnaBridge 184:08ed48f1de7f 62
AnnaBridge 184:08ed48f1de7f 63 virtual int isatty()
AnnaBridge 184:08ed48f1de7f 64 {
AnnaBridge 184:08ed48f1de7f 65 /* File handle is used for terminal output */
AnnaBridge 184:08ed48f1de7f 66 return true;
AnnaBridge 184:08ed48f1de7f 67 }
AnnaBridge 184:08ed48f1de7f 68
AnnaBridge 184:08ed48f1de7f 69 virtual int close()
AnnaBridge 184:08ed48f1de7f 70 {
AnnaBridge 184:08ed48f1de7f 71 return 0;
AnnaBridge 184:08ed48f1de7f 72 }
AnnaBridge 184:08ed48f1de7f 73 };
Anna Bridge 186:707f6e361f3e 74
Anna Bridge 186:707f6e361f3e 75 } // namespace mbed
AnnaBridge 184:08ed48f1de7f 76
AnnaBridge 184:08ed48f1de7f 77 #endif