EP7212-CV 查看數據表（PDF） - Cirrus Logic

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EP7212-CV

High-Performance, Low-Power System-on-Chip with LCD Controller and Digital Audio Interface (DAI)

Cirrus Logic 

EP7212

STR

r0,[r12,#HwUartControl]

;initialise Uart

;

Send ready signal

LDR

r0,=startflag

STRB r0,[r12,#HwUartData]

; send ready

;

receive the data

LDR

r3,=count

LDR

r2,=BufferAddress

01

;

wait for byte available

LDR

r1,[r12,#HwStatus]

TST

r1,#HwStatusUartRxFifoEmpty

BNE

%b01

; spin, if Rx FIFO is empty

;

read the data ,store it and accumulate checksum

LDRB r0,[r12,#HwUartData]

; read data

STRB r0,[r2],#1

; save it in memory

SUBS r3,r3,#1

; decrement count

BNE

%b01

; do more if count has not expired

;

all received, send end flag

LDR

r0,=endflag

STRB r0,[r12,#HwUartData]

LDR

r15,=codeexeaddr

; send reply

;jump to execution address

LTORG

END

132

DS474PP1

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