takashi kadono / Mbed OS Nucleo_446

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/drivers/RawSerial.cpp@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2006-2013 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16 #include "drivers/RawSerial.h"
kadonotakashi 0:8fdf9a60065b 17 #include "platform/mbed_wait_api.h"
kadonotakashi 0:8fdf9a60065b 18 #include <stdio.h>
kadonotakashi 0:8fdf9a60065b 19 #include <cstdarg>
kadonotakashi 0:8fdf9a60065b 20
kadonotakashi 0:8fdf9a60065b 21
kadonotakashi 0:8fdf9a60065b 22 #if DEVICE_SERIAL
kadonotakashi 0:8fdf9a60065b 23
kadonotakashi 0:8fdf9a60065b 24 #define STRING_STACK_LIMIT 120
kadonotakashi 0:8fdf9a60065b 25
kadonotakashi 0:8fdf9a60065b 26 namespace mbed {
kadonotakashi 0:8fdf9a60065b 27
kadonotakashi 0:8fdf9a60065b 28 RawSerial::RawSerial(PinName tx, PinName rx, int baud) : SerialBase(tx, rx, baud)
kadonotakashi 0:8fdf9a60065b 29 {
kadonotakashi 0:8fdf9a60065b 30 // No lock needed in the constructor
kadonotakashi 0:8fdf9a60065b 31 }
kadonotakashi 0:8fdf9a60065b 32
kadonotakashi 0:8fdf9a60065b 33 int RawSerial::getc()
kadonotakashi 0:8fdf9a60065b 34 {
kadonotakashi 0:8fdf9a60065b 35 lock();
kadonotakashi 0:8fdf9a60065b 36 int ret = _base_getc();
kadonotakashi 0:8fdf9a60065b 37 unlock();
kadonotakashi 0:8fdf9a60065b 38 return ret;
kadonotakashi 0:8fdf9a60065b 39 }
kadonotakashi 0:8fdf9a60065b 40
kadonotakashi 0:8fdf9a60065b 41 int RawSerial::putc(int c)
kadonotakashi 0:8fdf9a60065b 42 {
kadonotakashi 0:8fdf9a60065b 43 lock();
kadonotakashi 0:8fdf9a60065b 44 int ret = _base_putc(c);
kadonotakashi 0:8fdf9a60065b 45 unlock();
kadonotakashi 0:8fdf9a60065b 46 return ret;
kadonotakashi 0:8fdf9a60065b 47 }
kadonotakashi 0:8fdf9a60065b 48
kadonotakashi 0:8fdf9a60065b 49 int RawSerial::puts(const char *str)
kadonotakashi 0:8fdf9a60065b 50 {
kadonotakashi 0:8fdf9a60065b 51 lock();
kadonotakashi 0:8fdf9a60065b 52 while (*str) {
kadonotakashi 0:8fdf9a60065b 53 putc(*str ++);
kadonotakashi 0:8fdf9a60065b 54 }
kadonotakashi 0:8fdf9a60065b 55 unlock();
kadonotakashi 0:8fdf9a60065b 56 return 0;
kadonotakashi 0:8fdf9a60065b 57 }
kadonotakashi 0:8fdf9a60065b 58
kadonotakashi 0:8fdf9a60065b 59 // Experimental support for printf in RawSerial. No Stream inheritance
kadonotakashi 0:8fdf9a60065b 60 // means we can't call printf() directly, so we use sprintf() instead.
kadonotakashi 0:8fdf9a60065b 61 // We only call malloc() for the sprintf() buffer if the buffer
kadonotakashi 0:8fdf9a60065b 62 // length is above a certain threshold, otherwise we use just the stack.
kadonotakashi 0:8fdf9a60065b 63 int RawSerial::printf(const char *format, ...)
kadonotakashi 0:8fdf9a60065b 64 {
kadonotakashi 0:8fdf9a60065b 65 lock();
kadonotakashi 0:8fdf9a60065b 66 std::va_list arg;
kadonotakashi 0:8fdf9a60065b 67 va_start(arg, format);
kadonotakashi 0:8fdf9a60065b 68 // ARMCC microlib does not properly handle a size of 0.
kadonotakashi 0:8fdf9a60065b 69 // As a workaround supply a dummy buffer with a size of 1.
kadonotakashi 0:8fdf9a60065b 70 char dummy_buf[1];
kadonotakashi 0:8fdf9a60065b 71 int len = vsnprintf(dummy_buf, sizeof(dummy_buf), format, arg);
kadonotakashi 0:8fdf9a60065b 72 if (len < STRING_STACK_LIMIT) {
kadonotakashi 0:8fdf9a60065b 73 char temp[STRING_STACK_LIMIT];
kadonotakashi 0:8fdf9a60065b 74 vsprintf(temp, format, arg);
kadonotakashi 0:8fdf9a60065b 75 puts(temp);
kadonotakashi 0:8fdf9a60065b 76 } else {
kadonotakashi 0:8fdf9a60065b 77 char *temp = new char[len + 1];
kadonotakashi 0:8fdf9a60065b 78 vsprintf(temp, format, arg);
kadonotakashi 0:8fdf9a60065b 79 puts(temp);
kadonotakashi 0:8fdf9a60065b 80 delete[] temp;
kadonotakashi 0:8fdf9a60065b 81 }
kadonotakashi 0:8fdf9a60065b 82 va_end(arg);
kadonotakashi 0:8fdf9a60065b 83 unlock();
kadonotakashi 0:8fdf9a60065b 84 return len;
kadonotakashi 0:8fdf9a60065b 85 }
kadonotakashi 0:8fdf9a60065b 86
kadonotakashi 0:8fdf9a60065b 87 /** Acquire exclusive access to this serial port
kadonotakashi 0:8fdf9a60065b 88 */
kadonotakashi 0:8fdf9a60065b 89 void RawSerial::lock()
kadonotakashi 0:8fdf9a60065b 90 {
kadonotakashi 0:8fdf9a60065b 91 // No lock used - external synchronization required
kadonotakashi 0:8fdf9a60065b 92 }
kadonotakashi 0:8fdf9a60065b 93
kadonotakashi 0:8fdf9a60065b 94 /** Release exclusive access to this serial port
kadonotakashi 0:8fdf9a60065b 95 */
kadonotakashi 0:8fdf9a60065b 96 void RawSerial::unlock()
kadonotakashi 0:8fdf9a60065b 97 {
kadonotakashi 0:8fdf9a60065b 98 // No lock used - external synchronization required
kadonotakashi 0:8fdf9a60065b 99 }
kadonotakashi 0:8fdf9a60065b 100
kadonotakashi 0:8fdf9a60065b 101 } // namespace mbed
kadonotakashi 0:8fdf9a60065b 102
kadonotakashi 0:8fdf9a60065b 103 #endif