Method eraseAll

SerialFlashChip.cpp:218–265

}

void SerialFlashChip::eraseAll()
{
	if (busy) wait();
	uint8_t id[5];
	readID(id);
	//Serial.printf("ID: %02X %02X %02X\n", id[0], id[1], id[2]);
	if (id[0] == 0x20 && id[2] >= 0x20 && id[2] <= 0x22) {
		// Micron's multi-die chips require special die erase commands
		//  N25Q512A	20 BA 20  2 dies  32 Mbyte/die   65 nm transitors
		//  N25Q00AA	20 BA 21  4 dies  32 Mbyte/die   65 nm transitors
		//  MT25QL02GC	20 BA 22  2 dies  128 Mbyte/die  45 nm transitors
		uint8_t die_count = 2;
		if (id[2] == 0x21) die_count = 4;
		uint8_t die_index = flags >> 6;
		 //Serial.printf("Micron die erase %d\n", die_index);
		flags &= 0x3F;
		if (die_index >= die_count) return; // all dies erased :-)
		uint8_t die_size = 2;  // in 16 Mbyte units
		if (id[2] == 0x22) die_size = 8;
		SPIPORT.beginTransaction(SPICONFIG);
		CSASSERT();
		SPIPORT.transfer(0x06); // write enable command
		CSRELEASE();
		 delayMicroseconds(1);
		CSASSERT();
		// die erase command
		SPIPORT.transfer(0xC4);
		SPIPORT.transfer16((die_index * die_size) << 8);
		SPIPORT.transfer16(0x0000);
		CSRELEASE();
		 //Serial.printf("Micron erase begin\n");
		flags |= (die_index + 1) << 6;
	} else {
		// All other chips support the bulk erase command
		SPIPORT.beginTransaction(SPICONFIG);
		CSASSERT();
		// write enable command
		SPIPORT.transfer(0x06);
		CSRELEASE();
		 delayMicroseconds(1);
		CSASSERT();
		// bulk erase command
		SPIPORT.transfer(0xC7);
		CSRELEASE();
		SPIPORT.endTransaction();
	}
	busy = 3;
}

void SerialFlashChip::eraseBlock(uint32_t addr)
{