mirror of https://github.com/ArduPilot/ardupilot
84 lines
1.7 KiB
C++
84 lines
1.7 KiB
C++
#include <AP_HAL.h>
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#if CONFIG_HAL_BOARD == HAL_BOARD_AVR_SITL
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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 "Storage.h"
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using namespace AVR_SITL;
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void SITLEEPROMStorage::_eeprom_open(void)
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{
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if (_eeprom_fd == -1) {
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_eeprom_fd = open("eeprom.bin", O_RDWR|O_CREAT, 0777);
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assert(ftruncate(_eeprom_fd, 4096) == 0);
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}
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}
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uint8_t SITLEEPROMStorage::read_byte(uint16_t loc)
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{
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uint8_t value;
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assert(loc < 4096);
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_eeprom_open();
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assert(pread(_eeprom_fd, &value, 1, loc) == 1);
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return value;
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}
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uint16_t SITLEEPROMStorage::read_word(uint16_t loc)
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{
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uint16_t value;
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assert(loc < 4096);
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_eeprom_open();
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assert(pread(_eeprom_fd, &value, 2, loc) == 2);
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return value;
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}
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uint32_t SITLEEPROMStorage::read_dword(uint16_t loc)
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{
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uint32_t value;
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assert(loc < 4096);
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_eeprom_open();
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assert(pread(_eeprom_fd, &value, 4, loc) == 4);
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return value;
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}
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void SITLEEPROMStorage::read_block(void *dst, uint16_t src, size_t n)
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{
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assert(src < 4096 && src + n < 4096);
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_eeprom_open();
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assert(pread(_eeprom_fd, dst, n, src) == (ssize_t)n);
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}
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void SITLEEPROMStorage::write_byte(uint16_t loc, uint8_t value)
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{
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assert(loc < 4096);
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_eeprom_open();
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assert(pwrite(_eeprom_fd, &value, 1, loc) == 1);
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}
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void SITLEEPROMStorage::write_word(uint16_t loc, uint16_t value)
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{
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assert(loc < 4096);
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_eeprom_open();
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assert(pwrite(_eeprom_fd, &value, 2, loc) == 2);
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}
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void SITLEEPROMStorage::write_dword(uint16_t loc, uint32_t value)
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{
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assert(loc < 4096);
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_eeprom_open();
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assert(pwrite(_eeprom_fd, &value, 4, loc) == 4);
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}
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void SITLEEPROMStorage::write_block(uint16_t dst, const void *src, size_t n)
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{
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assert(dst < 4096);
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_eeprom_open();
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assert(pwrite(_eeprom_fd, src, n, dst) == (ssize_t)n);
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}
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#endif
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