对flash的操作实例，软件擦出，读和写flash(This program tests all the functions available in EFM8BB2_FlashPrimitives.c
// and EFM8BB2_FlashUtils.c.　It uses a test data array to mimic the changes
// made to the flash and test for correctness.　While the test is running, the
// LED is on.　If the test fails, the LED will turn off.　If the test passes,
// the LED will blink.
//
// Resources:
//　 SYSCLK - 24.5 MHz HFOSC / 8
//　 Timer0 - LED blink
//　 P0.0　 - Display enable
//　 P1.4　 - LED green)