Utility library for MTS Socket Modem Arduino Shield devices from Multi-Tech Systems
Dependents: mtsas mtsas thermostat_fan_demo--fan mtsas ... more
NOTE: MTS-Utils has moved to GitHub. This version will not be updated. For updates, go to the GitHub version.
MTSCircularBuffer.cpp@15:ae12624eb600, 2017-03-21 (annotated)
- Committer:
- Mike Fiore
- Date:
- Tue Mar 21 15:26:50 2017 -0500
- Revision:
- 15:ae12624eb600
- Parent:
- 13:4709c2dfcd11
update from git revision 37b619a6e4e6e3b49b64c402429cdd8710d960a6
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Mike Fiore |
6:fca9bc67b15f | 1 | #include "mbed.h" |
Mike Fiore |
3:08a693917d8c | 2 | #include "MTSCircularBuffer.h" |
Mike Fiore |
3:08a693917d8c | 3 | |
Mike Fiore |
3:08a693917d8c | 4 | using namespace mts; |
Mike Fiore |
3:08a693917d8c | 5 | |
Mike Fiore |
3:08a693917d8c | 6 | MTSCircularBuffer::MTSCircularBuffer(int bufferSize) : bufferSize(bufferSize), readIndex(0), writeIndex(0), bytes(0), _threshold(-1), _op(GREATER) |
Mike Fiore |
3:08a693917d8c | 7 | { |
Mike Fiore |
3:08a693917d8c | 8 | buffer = new char[bufferSize]; |
Mike Fiore |
3:08a693917d8c | 9 | } |
Mike Fiore |
3:08a693917d8c | 10 | |
Mike Fiore |
3:08a693917d8c | 11 | MTSCircularBuffer::~MTSCircularBuffer() |
Mike Fiore |
3:08a693917d8c | 12 | { |
Mike Fiore |
3:08a693917d8c | 13 | delete[] buffer; |
Mike Fiore |
3:08a693917d8c | 14 | } |
Mike Fiore |
3:08a693917d8c | 15 | |
Mike Fiore |
3:08a693917d8c | 16 | int MTSCircularBuffer::read(char* data, int length) |
Mike Fiore |
3:08a693917d8c | 17 | { |
Mike Fiore |
3:08a693917d8c | 18 | int i = 0; |
Mike Fiore |
3:08a693917d8c | 19 | while ((i < length) && (bytes > 0)) { |
Mike Fiore |
3:08a693917d8c | 20 | if (readIndex == bufferSize) { |
Mike Fiore |
3:08a693917d8c | 21 | readIndex = 0; |
Mike Fiore |
3:08a693917d8c | 22 | } |
Mike Fiore |
13:4709c2dfcd11 | 23 | __disable_irq(); |
Mike Fiore |
3:08a693917d8c | 24 | data[i++] = buffer[readIndex++]; |
Mike Fiore |
3:08a693917d8c | 25 | bytes--; |
Mike Fiore |
13:4709c2dfcd11 | 26 | __enable_irq(); |
Mike Fiore |
3:08a693917d8c | 27 | checkThreshold(); |
Mike Fiore |
3:08a693917d8c | 28 | } |
Mike Fiore |
3:08a693917d8c | 29 | return i; |
Mike Fiore |
3:08a693917d8c | 30 | } |
Mike Fiore |
3:08a693917d8c | 31 | |
Mike Fiore |
3:08a693917d8c | 32 | int MTSCircularBuffer::read(char& data) |
Mike Fiore |
3:08a693917d8c | 33 | { |
Mike Fiore |
3:08a693917d8c | 34 | if (bytes == 0) { |
Mike Fiore |
3:08a693917d8c | 35 | return 0; |
Mike Fiore |
3:08a693917d8c | 36 | } |
Mike Fiore |
3:08a693917d8c | 37 | if (readIndex == bufferSize) { |
Mike Fiore |
3:08a693917d8c | 38 | readIndex = 0; |
Mike Fiore |
3:08a693917d8c | 39 | } |
Mike Fiore |
13:4709c2dfcd11 | 40 | __disable_irq(); |
Mike Fiore |
3:08a693917d8c | 41 | data = buffer[readIndex++]; |
Mike Fiore |
3:08a693917d8c | 42 | bytes--; |
Mike Fiore |
13:4709c2dfcd11 | 43 | __enable_irq(); |
Mike Fiore |
3:08a693917d8c | 44 | checkThreshold(); |
Mike Fiore |
3:08a693917d8c | 45 | return 1; |
Mike Fiore |
3:08a693917d8c | 46 | } |
Mike Fiore |
3:08a693917d8c | 47 | |
Mike Fiore |
3:08a693917d8c | 48 | int MTSCircularBuffer::write(const char* data, int length) |
Mike Fiore |
3:08a693917d8c | 49 | { |
Mike Fiore |
3:08a693917d8c | 50 | int i = 0; |
Mike Fiore |
3:08a693917d8c | 51 | while((i < length) && (bytes < bufferSize)) { |
Mike Fiore |
3:08a693917d8c | 52 | if(writeIndex == bufferSize) { |
Mike Fiore |
3:08a693917d8c | 53 | writeIndex = 0; |
Mike Fiore |
3:08a693917d8c | 54 | } |
Mike Fiore |
13:4709c2dfcd11 | 55 | __disable_irq(); |
Mike Fiore |
3:08a693917d8c | 56 | buffer[writeIndex++] = data[i++]; |
Mike Fiore |
3:08a693917d8c | 57 | bytes++; |
Mike Fiore |
13:4709c2dfcd11 | 58 | __enable_irq(); |
Mike Fiore |
3:08a693917d8c | 59 | checkThreshold(); |
Mike Fiore |
3:08a693917d8c | 60 | } |
Mike Fiore |
3:08a693917d8c | 61 | return i; |
Mike Fiore |
3:08a693917d8c | 62 | } |
Mike Fiore |
3:08a693917d8c | 63 | |
Mike Fiore |
3:08a693917d8c | 64 | int MTSCircularBuffer::write(char data) |
Mike Fiore |
3:08a693917d8c | 65 | { |
Mike Fiore |
3:08a693917d8c | 66 | if (bytes == bufferSize) { |
Mike Fiore |
3:08a693917d8c | 67 | return 0; |
Mike Fiore |
3:08a693917d8c | 68 | } |
Mike Fiore |
3:08a693917d8c | 69 | if(writeIndex == bufferSize) { |
Mike Fiore |
3:08a693917d8c | 70 | writeIndex = 0; |
Mike Fiore |
3:08a693917d8c | 71 | } |
Mike Fiore |
13:4709c2dfcd11 | 72 | __disable_irq(); |
Mike Fiore |
3:08a693917d8c | 73 | buffer[writeIndex++] = data; |
Mike Fiore |
3:08a693917d8c | 74 | bytes++; |
Mike Fiore |
13:4709c2dfcd11 | 75 | __enable_irq(); |
Mike Fiore |
3:08a693917d8c | 76 | checkThreshold(); |
Mike Fiore |
3:08a693917d8c | 77 | return 1; |
Mike Fiore |
3:08a693917d8c | 78 | } |
Mike Fiore |
3:08a693917d8c | 79 | |
Mike Fiore |
3:08a693917d8c | 80 | int MTSCircularBuffer::capacity() |
Mike Fiore |
3:08a693917d8c | 81 | { |
Mike Fiore |
3:08a693917d8c | 82 | return bufferSize; |
Mike Fiore |
3:08a693917d8c | 83 | } |
Mike Fiore |
3:08a693917d8c | 84 | |
Mike Fiore |
3:08a693917d8c | 85 | int MTSCircularBuffer::remaining() |
Mike Fiore |
3:08a693917d8c | 86 | { |
Mike Fiore |
3:08a693917d8c | 87 | return bufferSize - bytes; |
Mike Fiore |
3:08a693917d8c | 88 | } |
Mike Fiore |
3:08a693917d8c | 89 | |
Mike Fiore |
3:08a693917d8c | 90 | int MTSCircularBuffer::size() |
Mike Fiore |
3:08a693917d8c | 91 | { |
Mike Fiore |
3:08a693917d8c | 92 | return bytes; |
Mike Fiore |
3:08a693917d8c | 93 | } |
Mike Fiore |
3:08a693917d8c | 94 | |
Mike Fiore |
3:08a693917d8c | 95 | bool MTSCircularBuffer::isFull() |
Mike Fiore |
3:08a693917d8c | 96 | { |
Mike Fiore |
3:08a693917d8c | 97 | if (bytes == bufferSize) { |
Mike Fiore |
3:08a693917d8c | 98 | return true; |
Mike Fiore |
3:08a693917d8c | 99 | } else { |
Mike Fiore |
3:08a693917d8c | 100 | return false; |
Mike Fiore |
3:08a693917d8c | 101 | } |
Mike Fiore |
3:08a693917d8c | 102 | } |
Mike Fiore |
3:08a693917d8c | 103 | |
Mike Fiore |
3:08a693917d8c | 104 | bool MTSCircularBuffer::isEmpty() |
Mike Fiore |
3:08a693917d8c | 105 | { |
Mike Fiore |
3:08a693917d8c | 106 | if (bytes == 0) { |
Mike Fiore |
3:08a693917d8c | 107 | return true; |
Mike Fiore |
3:08a693917d8c | 108 | } else { |
Mike Fiore |
3:08a693917d8c | 109 | return false; |
Mike Fiore |
3:08a693917d8c | 110 | } |
Mike Fiore |
3:08a693917d8c | 111 | } |
Mike Fiore |
3:08a693917d8c | 112 | |
Mike Fiore |
3:08a693917d8c | 113 | void MTSCircularBuffer::clear() |
Mike Fiore |
3:08a693917d8c | 114 | { |
Mike Fiore |
3:08a693917d8c | 115 | writeIndex = readIndex = bytes = 0; |
Mike Fiore |
3:08a693917d8c | 116 | } |
Mike Fiore |
3:08a693917d8c | 117 | |
Mike Fiore |
3:08a693917d8c | 118 | void MTSCircularBuffer::checkThreshold() |
Mike Fiore |
3:08a693917d8c | 119 | { |
Mike Fiore |
3:08a693917d8c | 120 | if (_threshold == -1) { |
Mike Fiore |
3:08a693917d8c | 121 | return; |
Mike Fiore |
3:08a693917d8c | 122 | } |
Mike Fiore |
3:08a693917d8c | 123 | switch (_op) { |
Mike Fiore |
3:08a693917d8c | 124 | case GREATER: |
Mike Fiore |
3:08a693917d8c | 125 | if (bytes > _threshold) { |
Mike Fiore |
3:08a693917d8c | 126 | notify.call(); |
Mike Fiore |
3:08a693917d8c | 127 | } |
Mike Fiore |
3:08a693917d8c | 128 | break; |
Mike Fiore |
3:08a693917d8c | 129 | case LESS: |
Mike Fiore |
3:08a693917d8c | 130 | if (bytes < _threshold) { |
Mike Fiore |
3:08a693917d8c | 131 | notify.call(); |
Mike Fiore |
3:08a693917d8c | 132 | } |
Mike Fiore |
3:08a693917d8c | 133 | break; |
Mike Fiore |
3:08a693917d8c | 134 | case GREATER_EQUAL: |
Mike Fiore |
3:08a693917d8c | 135 | if (bytes >= _threshold) { |
Mike Fiore |
3:08a693917d8c | 136 | notify.call(); |
Mike Fiore |
3:08a693917d8c | 137 | } |
Mike Fiore |
3:08a693917d8c | 138 | break; |
Mike Fiore |
3:08a693917d8c | 139 | case LESS_EQUAL: |
Mike Fiore |
3:08a693917d8c | 140 | if (bytes <= _threshold) { |
Mike Fiore |
3:08a693917d8c | 141 | notify.call(); |
Mike Fiore |
3:08a693917d8c | 142 | } |
Mike Fiore |
3:08a693917d8c | 143 | break; |
Mike Fiore |
3:08a693917d8c | 144 | case EQUAL: |
Mike Fiore |
3:08a693917d8c | 145 | if (bytes == _threshold) { |
Mike Fiore |
3:08a693917d8c | 146 | notify.call(); |
Mike Fiore |
3:08a693917d8c | 147 | } |
Mike Fiore |
3:08a693917d8c | 148 | break; |
Mike Fiore |
3:08a693917d8c | 149 | } |
Mike Fiore |
3:08a693917d8c | 150 | } |
Mike Fiore |
3:08a693917d8c | 151 |