CC1110-RTR1 datasheet(148/203 Pages) TI

148 / 203 page

CC1110

CC1110 PRELIMINARY Datasheet (Rev. 1.01) SWRS033A

Page 148 of 202

Setup DMA channel:

SRCADDR=<XDATA location>

DESTADDRR=FWDATA

VLEN=0

LEN=<block size>

WORDSIZE=byte

TMODE=single mode

TRIG=FL

SRCINC=yes

DESTINC=no

IRQMASK=yes

M8=0

PRIORITY=high

Arm DMA Channel

Start flash write

Setup flash address

; Write a consecutive block of data from XDATA to consecutive locations in

; flash memory using DMA

; Assumes 26 MHz system clock is used

;

MOV

DPTR,#DMACFG

;load data pointer with address for DMA

;channel configuration and

;start writing DMA configuration

MOV

A,#SRC_HI

;source data high address

MOVX

@DPTR,A

;

INC

DPTR

;

MOV

A,#SRC_LO

;source data low address

MOVX

@DPTR,A

;

INC

DPTR

;

MOV

A,#0DFh

;destination high address = HIGH(X_FWDATA)

MOVX

@DPTR,A

;

INC

DPTR

;

MOV

A,#0AFh

;destination low address = LOW(X_FWDATA)

MOVX

@DPTR,A

;

INC

DPTR

;

MOV

A,#BLK_LEN

;block length

MOVX

@DPTR,A

;

INC

DPTR

;

MOV

A,#012h

;8 bits, single mode, use FL trigger

MOVX

@DPTR,A

;

INC

DPTR

;

MOV

A,#042h

;increment source by 1, don’t increment

MOVX

@DPTR,A

;destination, mask interrupt, high DMA

;priority

MOV

DMA0CFGL,#DMACFG_LO ;setup start address for current DMA

MOV

DMA0CFGH,#DMACFG_HI ;configuration

MOV

DMAARM,#01h

;arm DMA channel 0

MOV

FADDRH,#00h

;setup flash address high

MOV

FADDRL,#01h

;setup flash address low

MOV

FWT,#2Ah

;setup flash timing

MOV

FCTL,#02h

;start flash page write => trigger DMA

Figure 29: Flash write using DMA

CC1110-RTR1 데이터시트(PDF) 148 Page - Texas Instruments

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