// generate EEPROM to write to device
public static bool GenerateEEPROMConfig(config cfg, out eep_config eep)
{
eep = new eep_config();
eep.config_id = CONFIG_ID;
eep.config_size = (UInt16)Marshal.SizeOf(typeof(eep_config));
eep.button_mode = (byte)cfg.buttons_mode;
eep.af_mode = (byte)cfg.af_mode;
eep.rotary_mode = (byte)cfg.rotary_mode;
eep.af_high_05hz = (byte)(cfg.af_high_hz * 2);
eep.af_low_05hz = (byte)(cfg.af_low_hz * 2);
//eep.af_high_hz_x10 = (UInt16)(cfg.af_high_hz * 10);
//if (!calc_timer(cfg.af_high_hz, out eep.af_high_div, out eep.af_high_per))
// return false;
//eep.af_low_hz_x10 = (UInt16)(cfg.af_low_hz * 10);
//if (!calc_timer(cfg.af_low_hz, out eep.af_low_div, out eep.af_low_per))
// return false;
eep.af_mask = 0;
for (int i = 0; i < 16; i++)
{
if (cfg.af_mask[i])
eep.af_mask |= (UInt16)(1 << i);
}
if (cfg.start_af_toggle_mode)
eep.start_af_toggle_mode = 0xFF;
else
eep.start_af_toggle_mode = 0x00;
if (cfg.af_save_state)
eep.af_save_state = 0xFF;
else
eep.af_save_state = 0;
// calculate CRC32
int size = Marshal.SizeOf(eep);
byte[] buffer = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(eep, ptr, true);
Marshal.Copy(ptr, buffer, 0, size);
Marshal.FreeHGlobal(ptr);
eep.crc32 = crc32(buffer, size - 4); // don't include the 4 byte CRC
return true;
}
// decode EEPROM read from device
public static config DecodeEEPROMConfig(eep_config eep, out string failure_message)
{
// check CRC32
int size = Marshal.SizeOf(eep);
byte[] buffer = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(eep, ptr, true);
Marshal.Copy(ptr, buffer, 0, size);
Marshal.FreeHGlobal(ptr);
if (eep.crc32 != crc32(buffer, size - 4))
{
failure_message = "Bad CRC.";
return null;
}
// decode config
var cfg = new config();
cfg.buttons_mode = eep.button_mode;
cfg.af_mode = eep.af_mode;
cfg.rotary_mode = eep.rotary_mode;
cfg.af_high_hz = eep.af_high_05hz / 2;
cfg.af_low_hz = eep.af_low_05hz / 2;
for (int i = 0; i < 16; i++)
{
if ((eep.af_mask & (1 << i)) != 0)
cfg.af_mask[i] = true;
else
cfg.af_mask[i] = false;
}
if (eep.start_af_toggle_mode != 0)
cfg.start_af_toggle_mode = true;
else
cfg.start_af_toggle_mode = false;
if (eep.af_save_state != 0)
cfg.af_save_state = true;
else
cfg.af_save_state = false;
if (!config.ValidateConfig(cfg, out failure_message))
return null;
return cfg;
}