BTLE demo for MAXWSNENV.
Dependencies: BLE_API BMP180 Si7020 mbed MaximBLE
PressureChar.h@2:6f76d6160601, 2016-08-18 (annotated)
- Committer:
- enginerd
- Date:
- Thu Aug 18 21:09:13 2016 +0000
- Revision:
- 2:6f76d6160601
- Parent:
- 0:f71931ae3db1
Updated library versions.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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kgills | 0:f71931ae3db1 | 1 | /******************************************************************************* |
kgills | 0:f71931ae3db1 | 2 | * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved. |
kgills | 0:f71931ae3db1 | 3 | * |
kgills | 0:f71931ae3db1 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
kgills | 0:f71931ae3db1 | 5 | * copy of this software and associated documentation files (the "Software"), |
kgills | 0:f71931ae3db1 | 6 | * to deal in the Software without restriction, including without limitation |
kgills | 0:f71931ae3db1 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
kgills | 0:f71931ae3db1 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
kgills | 0:f71931ae3db1 | 9 | * Software is furnished to do so, subject to the following conditions: |
kgills | 0:f71931ae3db1 | 10 | * |
kgills | 0:f71931ae3db1 | 11 | * The above copyright notice and this permission notice shall be included |
kgills | 0:f71931ae3db1 | 12 | * in all copies or substantial portions of the Software. |
kgills | 0:f71931ae3db1 | 13 | * |
kgills | 0:f71931ae3db1 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
kgills | 0:f71931ae3db1 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
kgills | 0:f71931ae3db1 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
kgills | 0:f71931ae3db1 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
kgills | 0:f71931ae3db1 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
kgills | 0:f71931ae3db1 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
kgills | 0:f71931ae3db1 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
kgills | 0:f71931ae3db1 | 21 | * |
kgills | 0:f71931ae3db1 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
kgills | 0:f71931ae3db1 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
kgills | 0:f71931ae3db1 | 24 | * Products, Inc. Branding Policy. |
kgills | 0:f71931ae3db1 | 25 | * |
kgills | 0:f71931ae3db1 | 26 | * The mere transfer of this software does not imply any licenses |
kgills | 0:f71931ae3db1 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
kgills | 0:f71931ae3db1 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
kgills | 0:f71931ae3db1 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
kgills | 0:f71931ae3db1 | 30 | * ownership rights. |
kgills | 0:f71931ae3db1 | 31 | ******************************************************************************* |
kgills | 0:f71931ae3db1 | 32 | */ |
kgills | 0:f71931ae3db1 | 33 | |
kgills | 0:f71931ae3db1 | 34 | #ifndef __BLE_PRESSURECHAR_H__ |
kgills | 0:f71931ae3db1 | 35 | #define __BLE_PRESSURECHAR_H__ |
kgills | 0:f71931ae3db1 | 36 | |
kgills | 0:f71931ae3db1 | 37 | #include "Characteristic.h" |
kgills | 0:f71931ae3db1 | 38 | #include "UUID.h" |
kgills | 0:f71931ae3db1 | 39 | |
kgills | 0:f71931ae3db1 | 40 | /** |
kgills | 0:f71931ae3db1 | 41 | * @class PressureChar |
kgills | 0:f71931ae3db1 | 42 | * @brief PressureChar characteristic class. |
kgills | 0:f71931ae3db1 | 43 | * @details Sub class from the characteristic class. |
kgills | 0:f71931ae3db1 | 44 | */ |
kgills | 0:f71931ae3db1 | 45 | class PressureChar : public Characteristic |
kgills | 0:f71931ae3db1 | 46 | { |
kgills | 0:f71931ae3db1 | 47 | public: |
kgills | 0:f71931ae3db1 | 48 | |
kgills | 0:f71931ae3db1 | 49 | typedef enum { |
kgills | 0:f71931ae3db1 | 50 | PRES_UNIT_KPA, |
kgills | 0:f71931ae3db1 | 51 | PRES_UNIT_ATM, |
kgills | 0:f71931ae3db1 | 52 | PRES_UNIT_MMHG |
kgills | 0:f71931ae3db1 | 53 | } pres_unit_t; |
kgills | 0:f71931ae3db1 | 54 | |
kgills | 0:f71931ae3db1 | 55 | static const unsigned OFFSET_OF_FLAGS = 0; |
kgills | 0:f71931ae3db1 | 56 | static const unsigned OFFSET_OF_VALUE = OFFSET_OF_FLAGS + 1; |
kgills | 0:f71931ae3db1 | 57 | static const unsigned OFFSET_OF_TIME = OFFSET_OF_VALUE + 4; |
kgills | 0:f71931ae3db1 | 58 | static const unsigned CHAR_BYTES = (1 + 4 + TIMESTAMP_BYTES); |
kgills | 0:f71931ae3db1 | 59 | |
kgills | 0:f71931ae3db1 | 60 | static const unsigned UNIT_FLAG_POS = 0; |
kgills | 0:f71931ae3db1 | 61 | static const unsigned UNIT_FLAG_MSK = (0x3 << UNIT_FLAG_POS); |
kgills | 0:f71931ae3db1 | 62 | static const unsigned TIMESTAMP_FLAG_POS = 2; |
kgills | 0:f71931ae3db1 | 63 | static const unsigned TIMESTAMP_FLAG_MSK = (0x1 << TIMESTAMP_FLAG_POS); |
kgills | 0:f71931ae3db1 | 64 | |
kgills | 0:f71931ae3db1 | 65 | PressureChar(pres_unit_t unit) : |
kgills | 0:f71931ae3db1 | 66 | gattChar(charUUID, bytes, CHAR_BYTES, CHAR_BYTES, |
kgills | 0:f71931ae3db1 | 67 | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | |
kgills | 0:f71931ae3db1 | 68 | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) |
kgills | 0:f71931ae3db1 | 69 | { |
kgills | 0:f71931ae3db1 | 70 | // Default no timestamp and zero for the value |
kgills | 0:f71931ae3db1 | 71 | memset(bytes, 0x0, CHAR_BYTES); |
kgills | 0:f71931ae3db1 | 72 | bytes[OFFSET_OF_FLAGS] = ((unit << UNIT_FLAG_POS) | |
kgills | 0:f71931ae3db1 | 73 | (false << TIMESTAMP_FLAG_POS)); |
kgills | 0:f71931ae3db1 | 74 | } |
kgills | 0:f71931ae3db1 | 75 | |
kgills | 0:f71931ae3db1 | 76 | ~PressureChar() {} |
kgills | 0:f71931ae3db1 | 77 | |
kgills | 0:f71931ae3db1 | 78 | virtual GattCharacteristic *getChar(void) |
kgills | 0:f71931ae3db1 | 79 | { |
kgills | 0:f71931ae3db1 | 80 | return &gattChar; |
kgills | 0:f71931ae3db1 | 81 | } |
kgills | 0:f71931ae3db1 | 82 | |
kgills | 0:f71931ae3db1 | 83 | virtual uint8_t getNumBytes(void) |
kgills | 0:f71931ae3db1 | 84 | { |
kgills | 0:f71931ae3db1 | 85 | return CHAR_BYTES; |
kgills | 0:f71931ae3db1 | 86 | } |
kgills | 0:f71931ae3db1 | 87 | |
kgills | 0:f71931ae3db1 | 88 | virtual uint8_t *getBytes(void) |
kgills | 0:f71931ae3db1 | 89 | { |
kgills | 0:f71931ae3db1 | 90 | return bytes; |
kgills | 0:f71931ae3db1 | 91 | } |
kgills | 0:f71931ae3db1 | 92 | |
kgills | 0:f71931ae3db1 | 93 | // Update the characteristic value |
kgills | 0:f71931ae3db1 | 94 | void update(float value, time_t time = 0) |
kgills | 0:f71931ae3db1 | 95 | { |
kgills | 0:f71931ae3db1 | 96 | // Convert value to bytes |
kgills | 0:f71931ae3db1 | 97 | pres_unit_t unit = (pres_unit_t)(bytes[UNIT_FLAG_POS] & UNIT_FLAG_MSK); |
kgills | 0:f71931ae3db1 | 98 | uint32_t value_bytes; |
kgills | 0:f71931ae3db1 | 99 | if(unit == PRES_UNIT_KPA || unit == PRES_UNIT_MMHG) { |
kgills | 0:f71931ae3db1 | 100 | value_bytes = float_bytes(value, 2); |
kgills | 0:f71931ae3db1 | 101 | } else { |
kgills | 0:f71931ae3db1 | 102 | value_bytes = float_bytes(value, 4); |
kgills | 0:f71931ae3db1 | 103 | } |
kgills | 0:f71931ae3db1 | 104 | memcpy(&bytes[OFFSET_OF_VALUE], &value_bytes, sizeof(uint32_t)); |
kgills | 0:f71931ae3db1 | 105 | |
kgills | 0:f71931ae3db1 | 106 | if (time != 0) { |
kgills | 0:f71931ae3db1 | 107 | // Set timestamp flag |
kgills | 0:f71931ae3db1 | 108 | bytes[OFFSET_OF_FLAGS] |= TIMESTAMP_FLAG_MSK; |
kgills | 0:f71931ae3db1 | 109 | |
kgills | 0:f71931ae3db1 | 110 | // Convert time_t |
kgills | 0:f71931ae3db1 | 111 | date_time(time, &bytes[OFFSET_OF_TIME]); |
kgills | 0:f71931ae3db1 | 112 | } |
kgills | 0:f71931ae3db1 | 113 | else { |
kgills | 0:f71931ae3db1 | 114 | // Clear timestamp flag |
kgills | 0:f71931ae3db1 | 115 | bytes[OFFSET_OF_FLAGS] &= ~TIMESTAMP_FLAG_MSK; |
kgills | 0:f71931ae3db1 | 116 | } |
kgills | 0:f71931ae3db1 | 117 | } |
kgills | 0:f71931ae3db1 | 118 | |
kgills | 0:f71931ae3db1 | 119 | private: |
kgills | 0:f71931ae3db1 | 120 | GattCharacteristic gattChar; |
kgills | 0:f71931ae3db1 | 121 | uint8_t bytes[CHAR_BYTES]; |
kgills | 0:f71931ae3db1 | 122 | static const uint8_t charUUID[]; |
kgills | 0:f71931ae3db1 | 123 | }; |
kgills | 0:f71931ae3db1 | 124 | |
kgills | 0:f71931ae3db1 | 125 | // a8c094be-5b5e-4791-b2db-e9ccd2ff3442 |
kgills | 0:f71931ae3db1 | 126 | const uint8_t PressureChar::charUUID[] = {0x42,0x34,0xff,0xd2,0xcc,0xe9,0xdb,0xb2,0x91,0x47,0x5e,0x5b,0xbe,0x94,0xc0,0xa8}; |
kgills | 0:f71931ae3db1 | 127 | |
kgills | 0:f71931ae3db1 | 128 | #endif /* #ifndef __BLE_PRESSURECHAR_H__*/ |