NuMaker Transfer data UART to Ethernet
Fork of Serial-to-Ethernet by
BufferSerial/BufferSerial.cpp@9:b300117f3ed7, 19 months ago (annotated)
- Committer:
- cyliang
- Date:
- Mon Mar 06 05:36:05 2023 +0000
- Revision:
- 9:b300117f3ed7
- Parent:
- 6:014b1a469aed
Add M467 serial list
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 1 | /** |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 2 | * @file BufferSerial.cpp |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 3 | * @brief Software Buffer - Extends mbed Serial functionallity adding irq driven TX and RX |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 4 | * @author sam grove |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 5 | * @version 1.0 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 6 | * @see |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 7 | * |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 8 | * Copyright (c) 2013 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 9 | * |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 10 | * Licensed under the Apache License, Version 2.0 (the "License"); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 11 | * you may not use this file except in compliance with the License. |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 12 | * You may obtain a copy of the License at |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 13 | * |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 14 | * http://www.apache.org/licenses/LICENSE-2.0 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 15 | * |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 16 | * Unless required by applicable law or agreed to in writing, software |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 17 | * distributed under the License is distributed on an "AS IS" BASIS, |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 18 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 19 | * See the License for the specific language governing permissions and |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 20 | * limitations under the License. |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 21 | */ |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 22 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 23 | #include "BufferSerial.h" |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 24 | #include <stdarg.h> |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 25 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 26 | #if MBED_MAJOR_VERSION >= 6 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 27 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 28 | BufferSerial::BufferSerial(PinName tx, PinName rx, uint32_t buf_size, uint32_t tx_multiple, const char* name) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 29 | : MyUnbufferedSerial(tx, rx) , _rxbuf(buf_size), _txbuf((uint32_t)(tx_multiple*buf_size)) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 30 | #else |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 31 | BufferSerial::BufferSerial(PinName tx, PinName rx, uint32_t buf_size, uint32_t tx_multiple, const char* name) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 32 | : RawSerial(tx, rx) , _rxbuf(buf_size), _txbuf((uint32_t)(tx_multiple*buf_size)) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 33 | #endif |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 34 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 35 | #if MBED_MAJOR_VERSION >= 6 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 36 | MyUnbufferedSerial::attach(callback(this, &BufferSerial::rxIrq), SerialBase::RxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 37 | #else |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 38 | RawSerial::attach(this, &BufferSerial::rxIrq, Serial::RxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 39 | #endif |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 40 | this->_buf_size = buf_size; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 41 | this->_tx_multiple = tx_multiple; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 42 | return; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 43 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 44 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 45 | BufferSerial::~BufferSerial(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 46 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 47 | #if MBED_MAJOR_VERSION >= 6 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 48 | MyUnbufferedSerial::attach(NULL, MyUnbufferedSerial::RxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 49 | MyUnbufferedSerial::attach(NULL, MyUnbufferedSerial::TxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 50 | #else |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 51 | RawSerial::attach(NULL, RawSerial::RxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 52 | RawSerial::attach(NULL, RawSerial::TxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 53 | #endif |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 54 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 55 | return; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 56 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 57 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 58 | int BufferSerial::readable(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 59 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 60 | return _rxbuf.available(); // note: look if things are in the buffer |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 61 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 62 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 63 | int BufferSerial::writeable(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 64 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 65 | return 1; // buffer allows overwriting by design, always true |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 66 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 67 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 68 | int BufferSerial::getc(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 69 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 70 | return _rxbuf; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 71 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 72 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 73 | int BufferSerial::putc(int c) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 74 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 75 | _txbuf = (char)c; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 76 | BufferSerial::prime(); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 77 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 78 | return c; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 79 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 80 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 81 | int BufferSerial::puts(const char *s) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 82 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 83 | if (s != NULL) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 84 | const char* ptr = s; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 85 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 86 | while(*(ptr) != 0) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 87 | _txbuf = *(ptr++); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 88 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 89 | _txbuf = '\n'; // done per puts definition |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 90 | BufferSerial::prime(); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 91 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 92 | return (ptr - s) + 1; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 93 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 94 | return 0; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 95 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 96 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 97 | int BufferSerial::printf(const char* format, ...) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 98 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 99 | char buffer[this->_buf_size]; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 100 | memset(buffer,0,this->_buf_size); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 101 | int r = 0; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 102 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 103 | va_list arg; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 104 | va_start(arg, format); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 105 | r = vsprintf(buffer, format, arg); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 106 | // this may not hit the heap but should alert the user anyways |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 107 | if(r > this->_buf_size) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 108 | error("%s %d buffer overwrite (max_buf_size: %d exceeded: %d)!\r\n", __FILE__, __LINE__,this->_buf_size,r); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 109 | va_end(arg); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 110 | return 0; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 111 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 112 | va_end(arg); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 113 | r = BufferSerial::write(buffer, r); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 114 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 115 | return r; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 116 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 117 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 118 | ssize_t BufferSerial::write(const void *s, size_t length) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 119 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 120 | if (s != NULL && length > 0) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 121 | const char* ptr = (const char*)s; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 122 | const char* end = ptr + length; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 123 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 124 | while (ptr != end) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 125 | _txbuf = *(ptr++); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 126 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 127 | BufferSerial::prime(); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 128 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 129 | return ptr - (const char*)s; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 130 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 131 | return 0; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 132 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 133 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 134 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 135 | void BufferSerial::rxIrq(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 136 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 137 | // read from the peripheral and make sure something is available |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 138 | if(serial_readable(&_serial)) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 139 | _rxbuf = serial_getc(&_serial); // if so load them into a buffer |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 140 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 141 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 142 | return; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 143 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 144 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 145 | void BufferSerial::txIrq(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 146 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 147 | // see if there is room in the hardware fifo and if something is in the software fifo |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 148 | while(serial_writable(&_serial)) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 149 | if(_txbuf.available()) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 150 | serial_putc(&_serial, (int)_txbuf.get()); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 151 | } else { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 152 | // disable the TX interrupt when there is nothing left to send |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 153 | #if MBED_MAJOR_VERSION >= 6 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 154 | MyUnbufferedSerial::attach(NULL, MyUnbufferedSerial::TxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 155 | #else |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 156 | RawSerial::attach(NULL, RawSerial::TxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 157 | #endif |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 158 | break; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 159 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 160 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 161 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 162 | return; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 163 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 164 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 165 | void BufferSerial::prime(void) |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 166 | { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 167 | // if already busy then the irq will pick this up |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 168 | if(serial_writable(&_serial)) { |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 169 | #if MBED_MAJOR_VERSION >= 6 |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 170 | MyUnbufferedSerial::attach(NULL, MyUnbufferedSerial::TxIrq); // make sure not to cause contention in the irq |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 171 | BufferSerial::txIrq(); // only write to hardware in one place |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 172 | MyUnbufferedSerial::attach(callback(this, &BufferSerial::txIrq), MyUnbufferedSerial::TxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 173 | #else |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 174 | RawSerial::attach(NULL, RawSerial::TxIrq); // make sure not to cause contention in the irq |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 175 | BufferSerial::txIrq(); // only write to hardware in one place |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 176 | RawSerial::attach(this, &BufferSerial::txIrq, RawSerial::TxIrq); |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 177 | #endif |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 178 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 179 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 180 | return; |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 181 | } |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 182 | |
SHLIU1@OANBE02333.nuvoton.com | 6:014b1a469aed | 183 |