Revised to disable BLE for radio communication as needed.
Dependencies: BLE_API nRF51822 mbed-dev-bin
source/types/RefCounted.cpp@74:26717338739d, 2019-11-26 (annotated)
- Committer:
- tsfarber
- Date:
- Tue Nov 26 04:12:46 2019 +0000
- Revision:
- 74:26717338739d
- Parent:
- 1:8aa5cdb4ab67
This program combines samples programs radio TX and radio RX so that both units can send or receive depending on which unit's buttons are pressed. Tested successfully. MicroBitConfig.h has been edited to disable BLE.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Jonathan Austin |
1:8aa5cdb4ab67 | 1 | /* |
Jonathan Austin |
1:8aa5cdb4ab67 | 2 | The MIT License (MIT) |
Jonathan Austin |
1:8aa5cdb4ab67 | 3 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 4 | Copyright (c) 2016 British Broadcasting Corporation. |
Jonathan Austin |
1:8aa5cdb4ab67 | 5 | This software is provided by Lancaster University by arrangement with the BBC. |
Jonathan Austin |
1:8aa5cdb4ab67 | 6 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 7 | Permission is hereby granted, free of charge, to any person obtaining a |
Jonathan Austin |
1:8aa5cdb4ab67 | 8 | copy of this software and associated documentation files (the "Software"), |
Jonathan Austin |
1:8aa5cdb4ab67 | 9 | to deal in the Software without restriction, including without limitation |
Jonathan Austin |
1:8aa5cdb4ab67 | 10 | the rights to use, copy, modify, merge, publish, distribute, sublicense, |
Jonathan Austin |
1:8aa5cdb4ab67 | 11 | and/or sell copies of the Software, and to permit persons to whom the |
Jonathan Austin |
1:8aa5cdb4ab67 | 12 | Software is furnished to do so, subject to the following conditions: |
Jonathan Austin |
1:8aa5cdb4ab67 | 13 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 14 | The above copyright notice and this permission notice shall be included in |
Jonathan Austin |
1:8aa5cdb4ab67 | 15 | all copies or substantial portions of the Software. |
Jonathan Austin |
1:8aa5cdb4ab67 | 16 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
Jonathan Austin |
1:8aa5cdb4ab67 | 18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
Jonathan Austin |
1:8aa5cdb4ab67 | 19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
Jonathan Austin |
1:8aa5cdb4ab67 | 20 | THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
Jonathan Austin |
1:8aa5cdb4ab67 | 21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
Jonathan Austin |
1:8aa5cdb4ab67 | 22 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
Jonathan Austin |
1:8aa5cdb4ab67 | 23 | DEALINGS IN THE SOFTWARE. |
Jonathan Austin |
1:8aa5cdb4ab67 | 24 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 25 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 26 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 27 | * Base class for payload for ref-counted objects. Used by ManagedString and MicroBitImage. |
Jonathan Austin |
1:8aa5cdb4ab67 | 28 | * There is no constructor, as this struct is typically malloc()ed. |
Jonathan Austin |
1:8aa5cdb4ab67 | 29 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 30 | #include "mbed.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 31 | #include "MicroBitConfig.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 32 | #include "RefCounted.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 33 | #include "MicroBitDisplay.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 34 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 35 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 36 | * Initializes for one outstanding reference. |
Jonathan Austin |
1:8aa5cdb4ab67 | 37 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 38 | void RefCounted::init() |
Jonathan Austin |
1:8aa5cdb4ab67 | 39 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 40 | // Initialize to one reference (lowest bit set to 1) |
Jonathan Austin |
1:8aa5cdb4ab67 | 41 | refCount = 3; |
Jonathan Austin |
1:8aa5cdb4ab67 | 42 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 43 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 44 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 45 | * Checks if the object resides in flash memory. |
Jonathan Austin |
1:8aa5cdb4ab67 | 46 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 47 | * @param t the object to check. |
Jonathan Austin |
1:8aa5cdb4ab67 | 48 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 49 | * @return true if the object resides in flash memory, false otherwise. |
Jonathan Austin |
1:8aa5cdb4ab67 | 50 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 51 | static inline bool isReadOnlyInline(RefCounted *t) |
Jonathan Austin |
1:8aa5cdb4ab67 | 52 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 53 | uint32_t refCount = t->refCount; |
Jonathan Austin |
1:8aa5cdb4ab67 | 54 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 55 | if (refCount == 0xffff) |
Jonathan Austin |
1:8aa5cdb4ab67 | 56 | return true; // object in flash |
Jonathan Austin |
1:8aa5cdb4ab67 | 57 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 58 | // Do some sanity checking while we're here |
Jonathan Austin |
1:8aa5cdb4ab67 | 59 | if (refCount == 1 || // object should have been deleted |
Jonathan Austin |
1:8aa5cdb4ab67 | 60 | (refCount & 1) == 0) // refCount doesn't look right |
Jonathan Austin |
1:8aa5cdb4ab67 | 61 | microbit_panic(MICROBIT_HEAP_ERROR); |
Jonathan Austin |
1:8aa5cdb4ab67 | 62 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 63 | // Not read only |
Jonathan Austin |
1:8aa5cdb4ab67 | 64 | return false; |
Jonathan Austin |
1:8aa5cdb4ab67 | 65 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 66 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 67 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 68 | * Checks if the object resides in flash memory. |
Jonathan Austin |
1:8aa5cdb4ab67 | 69 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 70 | * @return true if the object resides in flash memory, false otherwise. |
Jonathan Austin |
1:8aa5cdb4ab67 | 71 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 72 | bool RefCounted::isReadOnly() |
Jonathan Austin |
1:8aa5cdb4ab67 | 73 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 74 | return isReadOnlyInline(this); |
Jonathan Austin |
1:8aa5cdb4ab67 | 75 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 76 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 77 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 78 | * Increment reference count. |
Jonathan Austin |
1:8aa5cdb4ab67 | 79 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 80 | void RefCounted::incr() |
Jonathan Austin |
1:8aa5cdb4ab67 | 81 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 82 | if (!isReadOnlyInline(this)) |
Jonathan Austin |
1:8aa5cdb4ab67 | 83 | refCount += 2; |
Jonathan Austin |
1:8aa5cdb4ab67 | 84 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 85 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 86 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 87 | * Decrement reference count. |
Jonathan Austin |
1:8aa5cdb4ab67 | 88 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 89 | void RefCounted::decr() |
Jonathan Austin |
1:8aa5cdb4ab67 | 90 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 91 | if (isReadOnlyInline(this)) |
Jonathan Austin |
1:8aa5cdb4ab67 | 92 | return; |
Jonathan Austin |
1:8aa5cdb4ab67 | 93 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 94 | refCount -= 2; |
Jonathan Austin |
1:8aa5cdb4ab67 | 95 | if (refCount == 1) { |
Jonathan Austin |
1:8aa5cdb4ab67 | 96 | free(this); |
Jonathan Austin |
1:8aa5cdb4ab67 | 97 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 98 | } |