Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/drivers/SerialWireOutput.h@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2017 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16
WFKnight 0:9b3d4731edbb 17 #if defined(DEVICE_ITM)
WFKnight 0:9b3d4731edbb 18
WFKnight 0:9b3d4731edbb 19 #include "hal/itm_api.h"
WFKnight 0:9b3d4731edbb 20 #include "platform/FileHandle.h"
WFKnight 0:9b3d4731edbb 21
WFKnight 0:9b3d4731edbb 22 namespace mbed {
WFKnight 0:9b3d4731edbb 23
WFKnight 0:9b3d4731edbb 24 class SerialWireOutput : public FileHandle {
WFKnight 0:9b3d4731edbb 25
WFKnight 0:9b3d4731edbb 26 public:
WFKnight 0:9b3d4731edbb 27
WFKnight 0:9b3d4731edbb 28 SerialWireOutput(void)
WFKnight 0:9b3d4731edbb 29 {
WFKnight 0:9b3d4731edbb 30 /* Initialize ITM using internal init function. */
WFKnight 0:9b3d4731edbb 31 mbed_itm_init();
WFKnight 0:9b3d4731edbb 32 }
WFKnight 0:9b3d4731edbb 33
WFKnight 0:9b3d4731edbb 34 virtual ssize_t write(const void *buffer, size_t size)
WFKnight 0:9b3d4731edbb 35 {
WFKnight 0:9b3d4731edbb 36 const unsigned char *buf = static_cast<const unsigned char *>(buffer);
WFKnight 0:9b3d4731edbb 37
WFKnight 0:9b3d4731edbb 38 /* Send buffer one character at a time over the ITM SWO port */
WFKnight 0:9b3d4731edbb 39 for (size_t i = 0; i < size; i++) {
WFKnight 0:9b3d4731edbb 40 mbed_itm_send(ITM_PORT_SWO, buf[i]);
WFKnight 0:9b3d4731edbb 41 }
WFKnight 0:9b3d4731edbb 42 return size;
WFKnight 0:9b3d4731edbb 43 }
WFKnight 0:9b3d4731edbb 44
WFKnight 0:9b3d4731edbb 45 virtual ssize_t read(void *buffer, size_t size)
WFKnight 0:9b3d4731edbb 46 {
WFKnight 0:9b3d4731edbb 47 /* Reading is not supported by this file handle */
WFKnight 0:9b3d4731edbb 48 return -EBADF;
WFKnight 0:9b3d4731edbb 49 }
WFKnight 0:9b3d4731edbb 50
WFKnight 0:9b3d4731edbb 51 virtual off_t seek(off_t offset, int whence = SEEK_SET)
WFKnight 0:9b3d4731edbb 52 {
WFKnight 0:9b3d4731edbb 53 /* Seeking is not support by this file handler */
WFKnight 0:9b3d4731edbb 54 return -ESPIPE;
WFKnight 0:9b3d4731edbb 55 }
WFKnight 0:9b3d4731edbb 56
WFKnight 0:9b3d4731edbb 57 virtual off_t size()
WFKnight 0:9b3d4731edbb 58 {
WFKnight 0:9b3d4731edbb 59 /* Size is not defined for this file handle */
WFKnight 0:9b3d4731edbb 60 return -EINVAL;
WFKnight 0:9b3d4731edbb 61 }
WFKnight 0:9b3d4731edbb 62
WFKnight 0:9b3d4731edbb 63 virtual int isatty()
WFKnight 0:9b3d4731edbb 64 {
WFKnight 0:9b3d4731edbb 65 /* File handle is used for terminal output */
WFKnight 0:9b3d4731edbb 66 return true;
WFKnight 0:9b3d4731edbb 67 }
WFKnight 0:9b3d4731edbb 68
WFKnight 0:9b3d4731edbb 69 virtual int close()
WFKnight 0:9b3d4731edbb 70 {
WFKnight 0:9b3d4731edbb 71 return 0;
WFKnight 0:9b3d4731edbb 72 }
WFKnight 0:9b3d4731edbb 73 };
WFKnight 0:9b3d4731edbb 74
WFKnight 0:9b3d4731edbb 75 } // namespace mbed
WFKnight 0:9b3d4731edbb 76
WFKnight 0:9b3d4731edbb 77 #endif