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49 lines
1016 B
49 lines
1016 B
#include <AP_HAL/AP_HAL.h> |
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#if CONFIG_HAL_BOARD == HAL_BOARD_QURT |
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#include <assert.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include <unistd.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include "Storage.h" |
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using namespace QURT; |
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/* |
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This stores 'eeprom' data on the filesystem, with a 16k size |
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Data is written on the ARM frontend via a RPC call |
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*/ |
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extern const AP_HAL::HAL& hal; |
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volatile bool Storage::dirty; |
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uint8_t Storage::buffer[QURT_STORAGE_SIZE]; |
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Semaphore Storage::lock; |
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void Storage::read_block(void *dst, uint16_t loc, size_t n) |
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{ |
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if (loc >= sizeof(buffer)-(n-1)) { |
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return; |
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} |
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memcpy(dst, &buffer[loc], n); |
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} |
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void Storage::write_block(uint16_t loc, const void *src, size_t n) |
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{ |
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if (loc >= sizeof(buffer)-(n-1)) { |
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return; |
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} |
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if (memcmp(src, &buffer[loc], n) != 0) { |
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lock.take(HAL_SEMAPHORE_BLOCK_FOREVER); |
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memcpy(&buffer[loc], src, n); |
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dirty = true; |
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lock.give(); |
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} |
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} |
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#endif // CONFIG_HAL_BOARD
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