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Delay function in lpc 17xx

Rahul Sen over 15 years ago

hello all

i want to introduce delay in program in microsecond range. can any one give me some examples for lpc17xx.

Thanks in advance.

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0 Rahul Sen over 15 years ago in reply to ImPer Westermark

If the assembly language program is written in c file using embedded assembler, will it have the same effect as separate assembly program?

__asm void delay(uint16_t usec)
        {
        MOVS     r1,#0
        B        |L1.6|
|L1.4|
        ADDS     r1,r1,#1
|L1.6|
        ADD      r2,r0,r0,LSL #2
        ADD      r2,r2,r0,LSL #3
        CMP      r2,r1
        BGT      |L1.4|
        BX       lr
        ENDP

        }

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0 Rahul Sen over 15 years ago in reply to ImPer Westermark

If the assembly language program is written in c file using embedded assembler, will it have the same effect as separate assembly program?

__asm void delay(uint16_t usec)
        {
        MOVS     r1,#0
        B        |L1.6|
|L1.4|
        ADDS     r1,r1,#1
|L1.6|
        ADD      r2,r0,r0,LSL #2
        ADD      r2,r2,r0,LSL #3
        CMP      r2,r1
        BGT      |L1.4|
        BX       lr
        ENDP

        }

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