AT90USB128X データシートの表示（PDF） - Atmel Corporation

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AT90USB128X

USB DFU Bootloader Datasheet

Atmel Corporation 

RCALL WAIT_SPMEN ; Wait for SPMEN flag cleared

MOV

R0,R16

LDI

R18,((1<<BLBSET)|(1<<SPMEN))

OUT SPMCSR, R18 ; r18 decides function

SPM

; write lockbits

RJMP WAIT_SPMEN ; Wait for SPMEN flag cleared

;*F************************************************************************

**

; NAME: wait_spmen

;--------------------------------------------------------------------------

--

; PARAMS: none

;--------------------------------------------------------------------------

--

; PURPOSE: Performs an active wait on SPME flag

;**************************************************************************

**

WAIT_SPMEN:

MOVR0, R18

INR18, SPMCSR ; get SPMCR into r18

SBRC R18,SPMEN

RJMP WAIT_SPMEN ; Wait for SPMEN flag cleared

MOVR18, R0

RET

END

26

7618C–AVR–07/08

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