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BERGCloudMbed.cpp@3:02b6b91ae6de, 2013-11-12 (annotated)
- Committer:
- nickludlam
- Date:
- Tue Nov 12 19:19:03 2013 +0000
- Revision:
- 3:02b6b91ae6de
- Parent:
- 0:b4ccb530b9eb
- Child:
- 4:5a04c00b5b6f
Fixed issue with initialisation of std::string when unpacking raw data
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| nickludlam | 3:02b6b91ae6de | 1 | /* |
| nickludlam | 3:02b6b91ae6de | 2 | |
| nickludlam | 3:02b6b91ae6de | 3 | BERGCloud library for mbed |
| nickludlam | 3:02b6b91ae6de | 4 | |
| nickludlam | 3:02b6b91ae6de | 5 | Copyright (c) 2013 BERG Cloud Ltd. http://bergcloud.com/ |
| nickludlam | 3:02b6b91ae6de | 6 | |
| nickludlam | 3:02b6b91ae6de | 7 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| nickludlam | 3:02b6b91ae6de | 8 | of this software and associated documentation files (the "Software"), to deal |
| nickludlam | 3:02b6b91ae6de | 9 | in the Software without restriction, including without limitation the rights |
| nickludlam | 3:02b6b91ae6de | 10 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| nickludlam | 3:02b6b91ae6de | 11 | copies of the Software, and to permit persons to whom the Software is |
| nickludlam | 3:02b6b91ae6de | 12 | furnished to do so, subject to the following conditions: |
| nickludlam | 3:02b6b91ae6de | 13 | |
| nickludlam | 3:02b6b91ae6de | 14 | The above copyright notice and this permission notice shall be included in |
| nickludlam | 3:02b6b91ae6de | 15 | all copies or substantial portions of the Software. |
| nickludlam | 3:02b6b91ae6de | 16 | |
| nickludlam | 3:02b6b91ae6de | 17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| nickludlam | 3:02b6b91ae6de | 18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| nickludlam | 3:02b6b91ae6de | 19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| nickludlam | 3:02b6b91ae6de | 20 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| nickludlam | 3:02b6b91ae6de | 21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| nickludlam | 3:02b6b91ae6de | 22 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| nickludlam | 3:02b6b91ae6de | 23 | THE SOFTWARE. |
| nickludlam | 3:02b6b91ae6de | 24 | |
| nickludlam | 3:02b6b91ae6de | 25 | */ |
| nickludlam | 3:02b6b91ae6de | 26 | |
| nickludlam | 3:02b6b91ae6de | 27 | #include <cstdint> |
| nickludlam | 3:02b6b91ae6de | 28 | #include <cstddef> |
| nickludlam | 3:02b6b91ae6de | 29 | #include <cstdarg> |
| nickludlam | 3:02b6b91ae6de | 30 | |
| nickludlam | 3:02b6b91ae6de | 31 | #include "BERGCloudMbed.h" |
| nickludlam | 3:02b6b91ae6de | 32 | |
| nickludlam | 3:02b6b91ae6de | 33 | uint16_t BERGCloudMbed::SPITransaction(uint8_t *dataOut, uint8_t *dataIn, uint16_t dataSize, bool finalCS) |
| nickludlam | 3:02b6b91ae6de | 34 | { |
| nickludlam | 3:02b6b91ae6de | 35 | uint16_t i; |
| nickludlam | 3:02b6b91ae6de | 36 | |
| nickludlam | 3:02b6b91ae6de | 37 | if ( (dataOut == NULL) || (dataIn == NULL) || (spi == NULL) ) |
| nickludlam | 3:02b6b91ae6de | 38 | { |
| nickludlam | 3:02b6b91ae6de | 39 | _LOG("Invalid parameter (CBERGCloud::SPITransaction)\r\n"); |
| nickludlam | 3:02b6b91ae6de | 40 | return 0; |
| nickludlam | 3:02b6b91ae6de | 41 | } |
| nickludlam | 3:02b6b91ae6de | 42 | |
| nickludlam | 3:02b6b91ae6de | 43 | nSSELPin->write(0); |
| nickludlam | 3:02b6b91ae6de | 44 | |
| nickludlam | 3:02b6b91ae6de | 45 | for (i = 0; i < dataSize; i++) |
| nickludlam | 3:02b6b91ae6de | 46 | { |
| nickludlam | 3:02b6b91ae6de | 47 | *dataIn++ = spi->write(*dataOut++); |
| nickludlam | 3:02b6b91ae6de | 48 | } |
| nickludlam | 3:02b6b91ae6de | 49 | |
| nickludlam | 3:02b6b91ae6de | 50 | if (finalCS) |
| nickludlam | 3:02b6b91ae6de | 51 | { |
| nickludlam | 3:02b6b91ae6de | 52 | nSSELPin->write(1); |
| nickludlam | 3:02b6b91ae6de | 53 | } |
| nickludlam | 3:02b6b91ae6de | 54 | |
| nickludlam | 3:02b6b91ae6de | 55 | return dataSize; |
| nickludlam | 3:02b6b91ae6de | 56 | } |
| nickludlam | 3:02b6b91ae6de | 57 | |
| nickludlam | 3:02b6b91ae6de | 58 | void BERGCloudMbed::timerReset(void) |
| nickludlam | 3:02b6b91ae6de | 59 | { |
| nickludlam | 3:02b6b91ae6de | 60 | timer->reset(); |
| nickludlam | 3:02b6b91ae6de | 61 | } |
| nickludlam | 3:02b6b91ae6de | 62 | |
| nickludlam | 3:02b6b91ae6de | 63 | uint32_t BERGCloudMbed::timerRead_mS(void) |
| nickludlam | 3:02b6b91ae6de | 64 | { |
| nickludlam | 3:02b6b91ae6de | 65 | return timer->read_ms(); |
| nickludlam | 3:02b6b91ae6de | 66 | } |
| nickludlam | 3:02b6b91ae6de | 67 | |
| nickludlam | 3:02b6b91ae6de | 68 | void BERGCloudMbed::begin(PinName _MOSIPin, PinName _MISOPin, PinName _SCLKPin, PinName _nSSELPin) |
| nickludlam | 3:02b6b91ae6de | 69 | { |
| nickludlam | 3:02b6b91ae6de | 70 | /* Call base class method */ |
| nickludlam | 3:02b6b91ae6de | 71 | BERGCloudBase::begin(); |
| nickludlam | 3:02b6b91ae6de | 72 | |
| nickludlam | 3:02b6b91ae6de | 73 | /* Configure nSSEL control pin */ |
| nickludlam | 3:02b6b91ae6de | 74 | nSSELPin = new DigitalOut(_nSSELPin); |
| nickludlam | 3:02b6b91ae6de | 75 | |
| nickludlam | 3:02b6b91ae6de | 76 | if (nSSELPin == NULL) |
| nickludlam | 3:02b6b91ae6de | 77 | { |
| nickludlam | 3:02b6b91ae6de | 78 | _LOG("nSSELPin is NULL (CBERGCloud::begin)\r\n"); |
| nickludlam | 3:02b6b91ae6de | 79 | return; |
| nickludlam | 3:02b6b91ae6de | 80 | } |
| nickludlam | 3:02b6b91ae6de | 81 | |
| nickludlam | 3:02b6b91ae6de | 82 | nSSELPin->write(1); |
| nickludlam | 3:02b6b91ae6de | 83 | |
| nickludlam | 3:02b6b91ae6de | 84 | /* Configure SPI */ |
| nickludlam | 3:02b6b91ae6de | 85 | spi = new SPI(_MOSIPin, _MISOPin, _SCLKPin); |
| nickludlam | 0:b4ccb530b9eb | 86 | |
| nickludlam | 3:02b6b91ae6de | 87 | if (spi == NULL) |
| nickludlam | 3:02b6b91ae6de | 88 | { |
| nickludlam | 3:02b6b91ae6de | 89 | _LOG("spi is NULL (CBERGCloud::begin)\r\n"); |
| nickludlam | 3:02b6b91ae6de | 90 | delete nSSELPin; |
| nickludlam | 3:02b6b91ae6de | 91 | return; |
| nickludlam | 3:02b6b91ae6de | 92 | } |
| nickludlam | 3:02b6b91ae6de | 93 | |
| nickludlam | 3:02b6b91ae6de | 94 | spi->format(8, 0); /* 8-bits; SPI MODE 0 */ |
| nickludlam | 3:02b6b91ae6de | 95 | spi->frequency(4000000); /* 4MHz */ |
| nickludlam | 3:02b6b91ae6de | 96 | |
| nickludlam | 3:02b6b91ae6de | 97 | /* Configure timer */ |
| nickludlam | 3:02b6b91ae6de | 98 | timer = new Timer(); |
| nickludlam | 3:02b6b91ae6de | 99 | |
| nickludlam | 3:02b6b91ae6de | 100 | if (timer == NULL) |
| nickludlam | 3:02b6b91ae6de | 101 | { |
| nickludlam | 3:02b6b91ae6de | 102 | _LOG("timer is NULL (CBERGCloud::begin)\r\n"); |
| nickludlam | 3:02b6b91ae6de | 103 | delete nSSELPin; |
| nickludlam | 3:02b6b91ae6de | 104 | delete spi; |
| nickludlam | 3:02b6b91ae6de | 105 | return; |
| nickludlam | 3:02b6b91ae6de | 106 | } |
| nickludlam | 3:02b6b91ae6de | 107 | |
| nickludlam | 3:02b6b91ae6de | 108 | timer->start(); |
| nickludlam | 3:02b6b91ae6de | 109 | } |
| nickludlam | 3:02b6b91ae6de | 110 | |
| nickludlam | 3:02b6b91ae6de | 111 | void BERGCloudMbed::end() |
| nickludlam | 3:02b6b91ae6de | 112 | { |
| nickludlam | 3:02b6b91ae6de | 113 | if (nSSELPin != NULL) |
| nickludlam | 3:02b6b91ae6de | 114 | { |
| nickludlam | 3:02b6b91ae6de | 115 | delete nSSELPin; |
| nickludlam | 3:02b6b91ae6de | 116 | } |
| nickludlam | 3:02b6b91ae6de | 117 | |
| nickludlam | 3:02b6b91ae6de | 118 | if (spi != NULL) |
| nickludlam | 3:02b6b91ae6de | 119 | { |
| nickludlam | 3:02b6b91ae6de | 120 | delete spi; |
| nickludlam | 3:02b6b91ae6de | 121 | } |
| nickludlam | 3:02b6b91ae6de | 122 | |
| nickludlam | 3:02b6b91ae6de | 123 | if (timer != NULL) |
| nickludlam | 3:02b6b91ae6de | 124 | { |
| nickludlam | 3:02b6b91ae6de | 125 | delete timer; |
| nickludlam | 3:02b6b91ae6de | 126 | } |
| nickludlam | 3:02b6b91ae6de | 127 | |
| nickludlam | 3:02b6b91ae6de | 128 | /* Call base class method */ |
| nickludlam | 3:02b6b91ae6de | 129 | BERGCloudBase::end(); |
| nickludlam | 3:02b6b91ae6de | 130 | } |
| nickludlam | 3:02b6b91ae6de | 131 | |
| nickludlam | 3:02b6b91ae6de | 132 | bool BERGCloudMbed::display(std::string& s) |
| nickludlam | 3:02b6b91ae6de | 133 | { |
| nickludlam | 3:02b6b91ae6de | 134 | return display(s.c_str()); |
| nickludlam | 3:02b6b91ae6de | 135 | } |
| nickludlam | 3:02b6b91ae6de | 136 | |
| nickludlam | 3:02b6b91ae6de | 137 | uint16_t BERGCloudMbed::getHostType(void) |
| nickludlam | 3:02b6b91ae6de | 138 | { |
| nickludlam | 3:02b6b91ae6de | 139 | return BC_HOST_MBED; |
| nickludlam | 3:02b6b91ae6de | 140 | } |
| nickludlam | 3:02b6b91ae6de | 141 | |
| nickludlam | 3:02b6b91ae6de | 142 | #ifdef BERGCLOUD_PACK_UNPACK |
| nickludlam | 3:02b6b91ae6de | 143 | |
| nickludlam | 3:02b6b91ae6de | 144 | bool BERGCloudMessage::pack(std::string& s) |
| nickludlam | 3:02b6b91ae6de | 145 | { |
| nickludlam | 3:02b6b91ae6de | 146 | return pack(s.c_str()); |
| nickludlam | 3:02b6b91ae6de | 147 | } |
| nickludlam | 3:02b6b91ae6de | 148 | |
| nickludlam | 3:02b6b91ae6de | 149 | bool BERGCloudMessage::unpack(std::string& s) |
| nickludlam | 3:02b6b91ae6de | 150 | { |
| nickludlam | 3:02b6b91ae6de | 151 | uint16_t sizeInBytes; |
| nickludlam | 3:02b6b91ae6de | 152 | |
| nickludlam | 3:02b6b91ae6de | 153 | if (!unpack_raw_header(&sizeInBytes)) |
| nickludlam | 3:02b6b91ae6de | 154 | { |
| nickludlam | 3:02b6b91ae6de | 155 | return false; |
| nickludlam | 3:02b6b91ae6de | 156 | } |
| nickludlam | 3:02b6b91ae6de | 157 | |
| nickludlam | 3:02b6b91ae6de | 158 | if (!remaining(sizeInBytes)) |
| nickludlam | 3:02b6b91ae6de | 159 | { |
| nickludlam | 3:02b6b91ae6de | 160 | _LOG_UNPACK_ERROR_NO_DATA; |
| nickludlam | 3:02b6b91ae6de | 161 | return false; |
| nickludlam | 3:02b6b91ae6de | 162 | } |
| nickludlam | 3:02b6b91ae6de | 163 | |
| nickludlam | 3:02b6b91ae6de | 164 | s.clear(); |
| nickludlam | 3:02b6b91ae6de | 165 | s.append((const char *)&buffer[bytesRead], sizeInBytes); |
| nickludlam | 3:02b6b91ae6de | 166 | bytesRead += sizeInBytes; |
| nickludlam | 3:02b6b91ae6de | 167 | |
| nickludlam | 3:02b6b91ae6de | 168 | return true; |
| nickludlam | 3:02b6b91ae6de | 169 | } |
| nickludlam | 3:02b6b91ae6de | 170 | |
| nickludlam | 3:02b6b91ae6de | 171 | #endif // #ifdef BERGCLOUD_PACK_UNPACK |
| nickludlam | 3:02b6b91ae6de | 172 |
