Initial commit
mbed-dev-master/drivers/SerialWireOutput.h@0:bb348c97df44, 2020-09-16 (annotated)
- Committer:
- lypinator
- Date:
- Wed Sep 16 01:11:49 2020 +0000
- Revision:
- 0:bb348c97df44
Added PWM
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lypinator | 0:bb348c97df44 | 1 | /* mbed Microcontroller Library |
lypinator | 0:bb348c97df44 | 2 | * Copyright (c) 2017 ARM Limited |
lypinator | 0:bb348c97df44 | 3 | * |
lypinator | 0:bb348c97df44 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
lypinator | 0:bb348c97df44 | 5 | * you may not use this file except in compliance with the License. |
lypinator | 0:bb348c97df44 | 6 | * You may obtain a copy of the License at |
lypinator | 0:bb348c97df44 | 7 | * |
lypinator | 0:bb348c97df44 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
lypinator | 0:bb348c97df44 | 9 | * |
lypinator | 0:bb348c97df44 | 10 | * Unless required by applicable law or agreed to in writing, software |
lypinator | 0:bb348c97df44 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
lypinator | 0:bb348c97df44 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
lypinator | 0:bb348c97df44 | 13 | * See the License for the specific language governing permissions and |
lypinator | 0:bb348c97df44 | 14 | * limitations under the License. |
lypinator | 0:bb348c97df44 | 15 | */ |
lypinator | 0:bb348c97df44 | 16 | |
lypinator | 0:bb348c97df44 | 17 | #if defined(DEVICE_ITM) |
lypinator | 0:bb348c97df44 | 18 | |
lypinator | 0:bb348c97df44 | 19 | #include "hal/itm_api.h" |
lypinator | 0:bb348c97df44 | 20 | #include "platform/FileHandle.h" |
lypinator | 0:bb348c97df44 | 21 | |
lypinator | 0:bb348c97df44 | 22 | namespace mbed { |
lypinator | 0:bb348c97df44 | 23 | |
lypinator | 0:bb348c97df44 | 24 | class SerialWireOutput : public FileHandle { |
lypinator | 0:bb348c97df44 | 25 | |
lypinator | 0:bb348c97df44 | 26 | public: |
lypinator | 0:bb348c97df44 | 27 | |
lypinator | 0:bb348c97df44 | 28 | SerialWireOutput(void) |
lypinator | 0:bb348c97df44 | 29 | { |
lypinator | 0:bb348c97df44 | 30 | /* Initialize ITM using internal init function. */ |
lypinator | 0:bb348c97df44 | 31 | mbed_itm_init(); |
lypinator | 0:bb348c97df44 | 32 | } |
lypinator | 0:bb348c97df44 | 33 | |
lypinator | 0:bb348c97df44 | 34 | virtual ssize_t write(const void *buffer, size_t size) |
lypinator | 0:bb348c97df44 | 35 | { |
lypinator | 0:bb348c97df44 | 36 | mbed_itm_send_block(ITM_PORT_SWO, buffer, size); |
lypinator | 0:bb348c97df44 | 37 | |
lypinator | 0:bb348c97df44 | 38 | return size; |
lypinator | 0:bb348c97df44 | 39 | } |
lypinator | 0:bb348c97df44 | 40 | |
lypinator | 0:bb348c97df44 | 41 | virtual ssize_t read(void *buffer, size_t size) |
lypinator | 0:bb348c97df44 | 42 | { |
lypinator | 0:bb348c97df44 | 43 | /* Reading is not supported by this file handle */ |
lypinator | 0:bb348c97df44 | 44 | return -EBADF; |
lypinator | 0:bb348c97df44 | 45 | } |
lypinator | 0:bb348c97df44 | 46 | |
lypinator | 0:bb348c97df44 | 47 | virtual off_t seek(off_t offset, int whence = SEEK_SET) |
lypinator | 0:bb348c97df44 | 48 | { |
lypinator | 0:bb348c97df44 | 49 | /* Seeking is not support by this file handler */ |
lypinator | 0:bb348c97df44 | 50 | return -ESPIPE; |
lypinator | 0:bb348c97df44 | 51 | } |
lypinator | 0:bb348c97df44 | 52 | |
lypinator | 0:bb348c97df44 | 53 | virtual off_t size() |
lypinator | 0:bb348c97df44 | 54 | { |
lypinator | 0:bb348c97df44 | 55 | /* Size is not defined for this file handle */ |
lypinator | 0:bb348c97df44 | 56 | return -EINVAL; |
lypinator | 0:bb348c97df44 | 57 | } |
lypinator | 0:bb348c97df44 | 58 | |
lypinator | 0:bb348c97df44 | 59 | virtual int isatty() |
lypinator | 0:bb348c97df44 | 60 | { |
lypinator | 0:bb348c97df44 | 61 | /* File handle is used for terminal output */ |
lypinator | 0:bb348c97df44 | 62 | return true; |
lypinator | 0:bb348c97df44 | 63 | } |
lypinator | 0:bb348c97df44 | 64 | |
lypinator | 0:bb348c97df44 | 65 | virtual int close() |
lypinator | 0:bb348c97df44 | 66 | { |
lypinator | 0:bb348c97df44 | 67 | return 0; |
lypinator | 0:bb348c97df44 | 68 | } |
lypinator | 0:bb348c97df44 | 69 | }; |
lypinator | 0:bb348c97df44 | 70 | |
lypinator | 0:bb348c97df44 | 71 | } // namespace mbed |
lypinator | 0:bb348c97df44 | 72 | |
lypinator | 0:bb348c97df44 | 73 | #endif |