E2P_CMD_EPC_CMD_WRITE_
val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;
op = E2P_CMD_EPC_CMD_WRITE_ | address;
op = E2P_CMD_EPC_CMD_WRITE_ | address;
val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;