SDK12 DFU Nrf_dfu_settings.c used RAM 1.7k

[Cesar]

1. Nrf_dfu_settings.c used 1.7k RAM in examples\ble_peripheral\experimental_ble_app_buttonless_dfu project ?can used more less?

2. Nrf_dfu_settings.c -> nrf_dfu_settings_write used "static nrf_dfu_settings_t temp_dfu_settings" can used "nrf_dfu_settings_t temp_dfu_settings", not static?

[Cesar]

can used flow ?

#if defined (__CC_ARM )

	uint8_t*  m_dfu_settings_buffer = (uint8_t* )BOOTLOADER_SETTINGS_ADDRESS;

#elif defined ( __GNUC__ )

	uint8_t*  m_dfu_settings_buffer = (uint8_t* )BOOTLOADER_SETTINGS_ADDRESS;

#elif defined ( __ICCARM__ )

	uint8_t*  m_dfu_settings_buffer = (uint8_t* )BOOTLOADER_SETTINGS_ADDRESS;

#else

	#error Not a valid compiler/linker for m_dfu_settings placement.

#endif