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@188:bcfe06ba3d64, 2018-11-08 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 08 11:46:34 2018 +0000
Revision:
188:bcfe06ba3d64
Parent:
187:0387e8f68319
Child:
189:f392fc9709a3
mbed-dev library. Release version 164

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 188:bcfe06ba3d64 17 #ifndef MBED_SERIALWIREOUTPUT_H
AnnaBridge 188:bcfe06ba3d64 18 #define MBED_SERIALWIREOUTPUT_H
AnnaBridge 188:bcfe06ba3d64 19
AnnaBridge 184:08ed48f1de7f 20 #if defined(DEVICE_ITM)
AnnaBridge 184:08ed48f1de7f 21
AnnaBridge 184:08ed48f1de7f 22 #include "hal/itm_api.h"
AnnaBridge 184:08ed48f1de7f 23 #include "platform/FileHandle.h"
AnnaBridge 184:08ed48f1de7f 24
Anna Bridge 186:707f6e361f3e 25 namespace mbed {
AnnaBridge 187:0387e8f68319 26
AnnaBridge 184:08ed48f1de7f 27 class SerialWireOutput : public FileHandle {
Anna Bridge 186:707f6e361f3e 28
AnnaBridge 184:08ed48f1de7f 29 public:
Anna Bridge 186:707f6e361f3e 30
AnnaBridge 184:08ed48f1de7f 31 SerialWireOutput(void)
AnnaBridge 184:08ed48f1de7f 32 {
AnnaBridge 184:08ed48f1de7f 33 /* Initialize ITM using internal init function. */
AnnaBridge 184:08ed48f1de7f 34 mbed_itm_init();
AnnaBridge 184:08ed48f1de7f 35 }
AnnaBridge 184:08ed48f1de7f 36
AnnaBridge 184:08ed48f1de7f 37 virtual ssize_t write(const void *buffer, size_t size)
AnnaBridge 184:08ed48f1de7f 38 {
AnnaBridge 187:0387e8f68319 39 mbed_itm_send_block(ITM_PORT_SWO, buffer, size);
AnnaBridge 184:08ed48f1de7f 40
AnnaBridge 184:08ed48f1de7f 41 return size;
AnnaBridge 184:08ed48f1de7f 42 }
AnnaBridge 184:08ed48f1de7f 43
AnnaBridge 184:08ed48f1de7f 44 virtual ssize_t read(void *buffer, size_t size)
AnnaBridge 184:08ed48f1de7f 45 {
AnnaBridge 184:08ed48f1de7f 46 /* Reading is not supported by this file handle */
AnnaBridge 184:08ed48f1de7f 47 return -EBADF;
AnnaBridge 184:08ed48f1de7f 48 }
AnnaBridge 184:08ed48f1de7f 49
AnnaBridge 184:08ed48f1de7f 50 virtual off_t seek(off_t offset, int whence = SEEK_SET)
AnnaBridge 184:08ed48f1de7f 51 {
AnnaBridge 184:08ed48f1de7f 52 /* Seeking is not support by this file handler */
AnnaBridge 184:08ed48f1de7f 53 return -ESPIPE;
AnnaBridge 184:08ed48f1de7f 54 }
AnnaBridge 184:08ed48f1de7f 55
AnnaBridge 184:08ed48f1de7f 56 virtual off_t size()
AnnaBridge 184:08ed48f1de7f 57 {
AnnaBridge 184:08ed48f1de7f 58 /* Size is not defined for this file handle */
AnnaBridge 184:08ed48f1de7f 59 return -EINVAL;
AnnaBridge 184:08ed48f1de7f 60 }
AnnaBridge 184:08ed48f1de7f 61
AnnaBridge 184:08ed48f1de7f 62 virtual int isatty()
AnnaBridge 184:08ed48f1de7f 63 {
AnnaBridge 184:08ed48f1de7f 64 /* File handle is used for terminal output */
AnnaBridge 184:08ed48f1de7f 65 return true;
AnnaBridge 184:08ed48f1de7f 66 }
AnnaBridge 184:08ed48f1de7f 67
AnnaBridge 184:08ed48f1de7f 68 virtual int close()
AnnaBridge 184:08ed48f1de7f 69 {
AnnaBridge 184:08ed48f1de7f 70 return 0;
AnnaBridge 184:08ed48f1de7f 71 }
AnnaBridge 184:08ed48f1de7f 72 };
AnnaBridge 187:0387e8f68319 73
Anna Bridge 186:707f6e361f3e 74 } // namespace mbed
AnnaBridge 184:08ed48f1de7f 75
AnnaBridge 188:bcfe06ba3d64 76 #endif // DEVICE_ITM
AnnaBridge 188:bcfe06ba3d64 77
AnnaBridge 188:bcfe06ba3d64 78 #endif // MBED_SERIALWIREOUTPUT_H