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#include "Settings.h"
#include <cstdlib>
#include <cstring>
using namespace Pinetime::Controllers;
struct SettingsHeader {
uint8_t isActive; // 0xF1 = Block is active, 0xF0 = Block is inactive
uint16_t version; // Current version, to verify if the saved data is for the current Version
};
#define HEADER_SIZE sizeof(SettingsHeader)
Settings::Settings( Pinetime::Drivers::SpiNorFlash &spiNorFlash ) : spiNorFlash{spiNorFlash} {}
void Settings::Init() {
// Load default settings from Flash
LoadSettingsFromFlash();
}
void Settings::SaveSettings() {
// verify if is necessary to save
if ( settingsChanged ) {
SaveSettingsToFlash();
}
settingsChanged = false;
}
bool Settings::FindHeader() {
SettingsHeader settingsHeader;
uint8_t bufferHead[sizeof(settingsHeader)];
for (uint8_t block = 0; block < 10; block++) {
spiNorFlash.Read( settingsBaseAddr + (block * 0x1000), bufferHead, sizeof(settingsHeader) );
std::memcpy(&settingsHeader, bufferHead, sizeof(settingsHeader));
if ( settingsHeader.isActive == 0xF1 && settingsHeader.version == settingsVersion ) {
settingsFlashBlock = block;
return true;
}
}
return false;
}
void Settings::ReadSettingsData() {
uint8_t bufferSettings[sizeof(settings)];
spiNorFlash.Read( settingsBaseAddr + (settingsFlashBlock * 0x1000) + HEADER_SIZE, bufferSettings, sizeof(settings) );
std::memcpy(&settings, bufferSettings, sizeof(settings));
}
void Settings::EraseBlock() {
spiNorFlash.SectorErase(settingsBaseAddr + (settingsFlashBlock * 0x1000));
}
void Settings::SetHeader( bool state ) {
SettingsHeader settingsHeader;
uint8_t bufferHead[sizeof(settingsHeader)];
settingsHeader.isActive = state ? 0xF1 : 0xF0;
settingsHeader.version = settingsVersion;
std::memcpy(bufferHead, &settingsHeader, sizeof(settingsHeader));
spiNorFlash.Write(settingsBaseAddr + (settingsFlashBlock * 0x1000), bufferHead, sizeof(settingsHeader));
}
void Settings::SaveSettingsData() {
uint8_t bufferSettings[sizeof(settings)];
std::memcpy(bufferSettings, &settings, sizeof(settings));
spiNorFlash.Write(settingsBaseAddr + (settingsFlashBlock * 0x1000) + HEADER_SIZE, bufferSettings, sizeof(settings));
}
void Settings::LoadSettingsFromFlash() {
if ( settingsFlashBlock == 99 ) {
// Find current Block, if can't find use default settings and set block to 0 ans save !
if ( FindHeader() ) {
ReadSettingsData();
} else {
SaveSettingsToFlash();
}
} else {
// Read Settings from flash...
// never used :)
ReadSettingsData();
}
}
void Settings::SaveSettingsToFlash() {
// calculate where to save...
// mark current to inactive
// erase the new location and save
// set settingsFlashBlock
// if first time hever, only saves to block 0 and set settingsFlashBlock
if ( settingsFlashBlock != 99 ) {
SetHeader( false );
}
settingsFlashBlock++;
if ( settingsFlashBlock > 9 ) settingsFlashBlock = 0;
EraseBlock();
SetHeader( true );
SaveSettingsData();
}
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