cmsis fft example problem in keil uvision 5.15

[armindavatgaran]

Posted on June 23, 2015 at 20:39

Hello

I tried to compile and run arm_fft_bin_example of the cmsis package but there is a problem.

The problem is in the arm_bitreversal2.s file that can't be compiled by keil.

Is there any workaround and solution?

Thanks.

[tm3341]

Posted on June 23, 2015 at 21:01

Yes, there is.

[armindavatgaran]

Posted on June 23, 2015 at 21:06

Hello

Here is the modified and working code for cortex-m4:

AREA ||.text||, CODE, READONLY, ALIGN=2


THUMB


;
/*

;* @brief In-place bit reversal function.

;* @param[in, out] *pSrc points to the in-place buffer of unknown 32-bit data type.

;* @param[in] bitRevLen bit reversal table length

;* @param[in] *pBitRevTab points to bit reversal table.

;* @return none.

;*/

EXPORT arm_bitreversal_32

EXPORT arm_bitreversal_16





arm_bitreversal_32 PROC

ADDS r3,r1,#1

CMP r3,#1

IT LS

BXLS lr

PUSH {r4-r9}

ADDS r1,r2,#2

LSRS r3,r3,#2

arm_bitreversal_32_0 ;
/* loop unrolled by 2 */

LDRH r8,[r1,#4]

LDRH r9,[r1,#2]

LDRH r2,[r1,#0]

LDRH r12,[r1,#-2]

ADD r8,r0,r8

ADD r9,r0,r9

ADD r2,r0,r2

ADD r12,r0,r12

LDR r7,[r9,#0]

LDR r6,[r8,#0]

LDR r5,[r2,#0]

LDR r4,[r12,#0]

STR r6,[r9,#0]

STR r7,[r8,#0]

STR r5,[r12,#0]

STR r4,[r2,#0]

LDR r7,[r9,#4]

LDR r6,[r8,#4]

LDR r5,[r2,#4]

LDR r4,[r12,#4]

STR r6,[r9,#4]

STR r7,[r8,#4]

STR r5,[r12,#4]

STR r4,[r2,#4]

ADDS r1,r1,#8

SUBS r3,r3,#1

BNE arm_bitreversal_32_0

POP {r4-r9}

BX lr

ENDP


arm_bitreversal_16 PROC

ADDS r3,r1,#1

CMP r3,#1

IT LS

BXLS lr

PUSH {r4-r9}

ADDS r1,r2,#2

LSRS r3,r3,#2

arm_bitreversal_16_0 ;
/* loop unrolled by 2 */

LDRH r8,[r1,#4]

LDRH r9,[r1,#2]

LDRH r2,[r1,#0]

LDRH r12,[r1,#-2]

ADD r8,r0,r8,LSR #1

ADD r9,r0,r9,LSR #1

ADD r2,r0,r2,LSR #1

ADD r12,r0,r12,LSR #1

LDR r7,[r9,#0]

LDR r6,[r8,#0]

LDR r5,[r2,#0]

LDR r4,[r12,#0]

STR r6,[r9,#0]

STR r7,[r8,#0]

STR r5,[r12,#0]

STR r4,[r2,#0]

ADDS r1,r1,#8

SUBS r3,r3,#1

BNE arm_bitreversal_16_0

POP {r4-r9}

BX lr

ENDP


END

[armindavatgaran]

Posted on June 24, 2015 at 10:10

by defining the following expression in the

options for target

->

Asm

->

Misc Controls

, problem will be solved.

--cpreproc