ardupilot/libraries/StorageManager/examples/StorageTest/StorageTest.cpp

102 lines
2.6 KiB
C++

// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
//
// Simple test for the StorageManager class
//
#include <AP_HAL/AP_HAL.h>
#include <StorageManager/StorageManager.h>
const AP_HAL::HAL& hal = AP_HAL::get_HAL();
#define DO_INITIALISATION 1
/*
instantiate all 4 storage types
*/
static StorageAccess all_storage[4] = {
StorageAccess(StorageManager::StorageParam),
StorageAccess(StorageManager::StorageMission),
StorageAccess(StorageManager::StorageFence),
StorageAccess(StorageManager::StorageRally)
};
/*
simple random generator, see http://en.wikipedia.org/wiki/Random_number_generation
*/
static uint16_t get_random(void)
{
static uint32_t m_z = 1234;
static uint32_t m_w = 76542;
m_z = 36969 * (m_z & 65535) + (m_z >> 16);
m_w = 18000 * (m_w & 65535) + (m_w >> 16);
return ((m_z << 16) + m_w) & 0xFFFF;
}
/*
return a predictable value for an offset
*/
static uint8_t pvalue(uint16_t offset)
{
return ((offset * 7) + 13) % 65536;
}
void setup(void)
{
hal.console->println("StorageTest startup...");
#if DO_INITIALISATION
for (uint8_t type=0; type<4; type++) {
const StorageAccess &storage = all_storage[type];
hal.console->printf("Init type %u\n", (unsigned)type);
for (uint16_t i=0; i<storage.size(); i++) {
storage.write_byte(i, pvalue(i));
}
}
#endif
}
void loop(void)
{
static uint32_t count;
uint8_t type = get_random() % 4;
const StorageAccess &storage = all_storage[type];
uint16_t offset = get_random() % storage.size();
uint8_t length = (get_random() & 31);
if (offset + length > storage.size()) {
length = storage.size() - offset;
}
if (length == 0) {
return;
}
uint8_t b[length];
for (uint8_t i=0; i<length; i++) {
b[i] = pvalue(offset+i);
}
if (get_random() % 2 == 1) {
if (!storage.write_block(offset, b, length)) {
hal.console->printf("write failed at offset %u length %u\n",
(unsigned)offset, (unsigned)length);
}
} else {
uint8_t b2[length];
if (!storage.read_block(b2, offset, length)) {
hal.console->printf("read failed at offset %u length %u\n",
(unsigned)offset, (unsigned)length);
}
if (memcmp(b, b2, length) != 0) {
hal.console->printf("bad data at offset %u length %u\n",
(unsigned)offset, (unsigned)length);
}
}
count++;
if (count % 10000 == 0) {
hal.console->printf("%u ops\n", count);
}
}
AP_HAL_MAIN();