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@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
188:bcfe06ba3d64 
mbed library release version 165

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 189:f392fc9709a3 3 * SPDX-License-Identifier: Apache-2.0
AnnaBridge 184:08ed48f1de7f 4 *
AnnaBridge 184:08ed48f1de7f 5 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 184:08ed48f1de7f 6 * you may not use this file except in compliance with the License.
AnnaBridge 184:08ed48f1de7f 7 * You may obtain a copy of the License at
AnnaBridge 184:08ed48f1de7f 8 *
AnnaBridge 184:08ed48f1de7f 9 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 184:08ed48f1de7f 10 *
AnnaBridge 184:08ed48f1de7f 11 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 184:08ed48f1de7f 12 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 184:08ed48f1de7f 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 184:08ed48f1de7f 14 * See the License for the specific language governing permissions and
AnnaBridge 184:08ed48f1de7f 15 * limitations under the License.
AnnaBridge 184:08ed48f1de7f 16 */
AnnaBridge 184:08ed48f1de7f 17
AnnaBridge 188:bcfe06ba3d64 18 #ifndef MBED_SERIALWIREOUTPUT_H
AnnaBridge 188:bcfe06ba3d64 19 #define MBED_SERIALWIREOUTPUT_H
AnnaBridge 188:bcfe06ba3d64 20
AnnaBridge 184:08ed48f1de7f 21 #if defined(DEVICE_ITM)
AnnaBridge 184:08ed48f1de7f 22
AnnaBridge 184:08ed48f1de7f 23 #include "hal/itm_api.h"
AnnaBridge 184:08ed48f1de7f 24 #include "platform/FileHandle.h"
AnnaBridge 184:08ed48f1de7f 25
Anna Bridge 186:707f6e361f3e 26 namespace mbed {
AnnaBridge 187:0387e8f68319 27
AnnaBridge 184:08ed48f1de7f 28 class SerialWireOutput : public FileHandle {
Anna Bridge 186:707f6e361f3e 29
AnnaBridge 184:08ed48f1de7f 30 public:
Anna Bridge 186:707f6e361f3e 31
AnnaBridge 184:08ed48f1de7f 32 SerialWireOutput(void)
AnnaBridge 184:08ed48f1de7f 33 {
AnnaBridge 184:08ed48f1de7f 34 /* Initialize ITM using internal init function. */
AnnaBridge 184:08ed48f1de7f 35 mbed_itm_init();
AnnaBridge 184:08ed48f1de7f 36 }
AnnaBridge 184:08ed48f1de7f 37
AnnaBridge 184:08ed48f1de7f 38 virtual ssize_t write(const void *buffer, size_t size)
AnnaBridge 184:08ed48f1de7f 39 {
AnnaBridge 187:0387e8f68319 40 mbed_itm_send_block(ITM_PORT_SWO, buffer, size);
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 };
AnnaBridge 187:0387e8f68319 74
Anna Bridge 186:707f6e361f3e 75 } // namespace mbed
AnnaBridge 184:08ed48f1de7f 76
AnnaBridge 188:bcfe06ba3d64 77 #endif // DEVICE_ITM
AnnaBridge 188:bcfe06ba3d64 78
AnnaBridge 188:bcfe06ba3d64 79 #endif // MBED_SERIALWIREOUTPUT_H