class library to access fischertechnik interfaces via USB
Dependencies: FatFileSystem mbed myBlueUSB neigbourhood rfcomm sdp
AvailableMemory.cpp@0:7da612835693, 2011-06-15 (annotated)
- Committer:
- networker
- Date:
- Wed Jun 15 19:12:25 2011 +0000
- Revision:
- 0:7da612835693
initial version
; Bluetooth support incomplete
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
networker |
0:7da612835693 | 1 | #include "AvailableMemory.h" |
networker |
0:7da612835693 | 2 | #include <stdlib.h> |
networker |
0:7da612835693 | 3 | |
networker |
0:7da612835693 | 4 | namespace segundo { |
networker |
0:7da612835693 | 5 | namespace Utilities { |
networker |
0:7da612835693 | 6 | |
networker |
0:7da612835693 | 7 | int AvailableMemory(int resolution, int maximum, bool disableInterrupts) { |
networker |
0:7da612835693 | 8 | |
networker |
0:7da612835693 | 9 | if (resolution < 1) resolution = 1; |
networker |
0:7da612835693 | 10 | if (maximum < 0) maximum = 0; |
networker |
0:7da612835693 | 11 | |
networker |
0:7da612835693 | 12 | int low = 0; |
networker |
0:7da612835693 | 13 | int high = maximum + 1; |
networker |
0:7da612835693 | 14 | |
networker |
0:7da612835693 | 15 | if (disableInterrupts) __disable_irq(); |
networker |
0:7da612835693 | 16 | |
networker |
0:7da612835693 | 17 | while (high - low > resolution) { |
networker |
0:7da612835693 | 18 | int mid = (low + high) / 2; |
networker |
0:7da612835693 | 19 | void* p = malloc(mid); |
networker |
0:7da612835693 | 20 | if (p == NULL) { |
networker |
0:7da612835693 | 21 | high = mid; |
networker |
0:7da612835693 | 22 | } else { |
networker |
0:7da612835693 | 23 | free(p); |
networker |
0:7da612835693 | 24 | low = mid; |
networker |
0:7da612835693 | 25 | } |
networker |
0:7da612835693 | 26 | } |
networker |
0:7da612835693 | 27 | |
networker |
0:7da612835693 | 28 | if (disableInterrupts) __enable_irq(); |
networker |
0:7da612835693 | 29 | |
networker |
0:7da612835693 | 30 | return low; |
networker |
0:7da612835693 | 31 | } |
networker |
0:7da612835693 | 32 | |
networker |
0:7da612835693 | 33 | } // namespace Utilities |
networker |
0:7da612835693 | 34 | } // namespace segundo |