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Hello, I made a FIR filter test program to test the EFCOP and the data transfer with DMA under the 56307 EVM. (Please see below) The program give me good results when I put $0 in the FDBA and the FCBA registers of the EFCOP, but no when I put another adress, even if this adress is lower than $1000. Could someone say me if the base adress of the FCM and the FDM should always be $0 (I don't see anything about that in the DSP documentation)? In advanced, many thanks for your answers. Vincent Meserette ;********************************************************************* ********* ; FIR filter test program with the 56307 EFCOP, with data transfer with DMA ; VM 07/03 ;********************************************************************* ********* include 'ioequ.asm' include 'intequ.asm' ;********************************************************************* ; EFCOP & DMA Variables ;********************************************************************* start equ $400 CHANNELS equ 1 ; number of channels FIR_LEN equ 2048 ; FIR length signal equ $2000 ; input sequence base address coefs equ $0 ; coef base address resu equ $4000 ; result address TEMP EQU $0 ; temp storage (FDBA) address org p:$0 jmp start ;********************************************************************* ; Program ;********************************************************************* org p:start ; clear memory move #$0,r0 move #>0,x0 move #$6000,x1 do x1,end_clear_x_buff move x0,x:(r0)+ end_clear_x_buff move #$0,r0 move #>0,x0 move #$6000,x1 do x1,end_clear_y_buff move x0,y:(r0)+ end_clear_y_buff ; coefs and signal storage move #signal,r0 move #>FIR_LEN,x0 move #>0.0001,a do x0,end_signal move a,x:(r0)+ add #>0.0001,a end_signal move #coefs,r0 move #>FIR_LEN,x0 move #>0.000005,a do x0,end_coefs move a,y:(r0)+ end_coefs ;********************************** ; Config DMA 0 (Mem -> EFCOP) ;********************************** movep #signal,x:M_DSR0 movep #M_FDIR,x:M_DDR0; DMA Destination is the EFCOP (Y Mem) ; Mode B movep #$1FF003,x:M_DCO0 ;DMA Count in mode B, 512*4 transfers movep #$1,x:M_DOR0 movep #$14AA04,x:M_DCR0 ;DE = 0 (DMA Ch0 disabled for now ) */ ;DIE = 0 (No interrupt at end of transfer */ ;DTM = 010 (Line transfer (2D), Clear DE */ ;DPR = 10 (Priority = 2) */ ;DCON = 0 (Continuous mode not needed */ ;DRS = 10101 (DMA Request is MDRQ11: EFCOP FDIBE) */ ;D3D = 0 (Disable 3D mode) */ ;DAM = 100000 (DMA Addressing Mode: ;Source = 000 (2D, DOR0 offset) ;Dest = 100 (No update) ) */ ;DDS = 01 (Destination (FDIR) is in Y memory) */ ;DSS = 00 (Source (input[]) is in X memory) */ ;********************************** ; Config DMA 1 (EFCOP -> Mem) ;********************************** movep #M_FDOR,x:M_DSR1 ; DMA source is the EFCOP (Y Mem) movep #resu,x:M_DDR1 ; DMA Destination is X Mem ; Mode A movep #$1,x:M_DCO1 ; DMA Count in mode A movep #$0CB2C1,x:M_DCR1 ;DE = 0 (DMA Ch1 disabled for now ) */ ;DIE = 0 (No interrupt at end of transfer */ ;DTM = 001 (Word, Clear DE */ ;DPR = 10 (Priority = 2) */ ;DCON = 0 (Continuous mode not needed */ ;DRS = 10110 (DMA Request is MDRQ12: EFCOP FDOBF) */ ;D3D = 0 (Disable 3D mode) */ ;DAM = 101100 (DMA Addressing Mode: ;Source = 100 (No update) ;Dest = 101 (Post Inc by 1) ) */ ;DDS = 00 (Dest (output[]) is in X memory) */ ;DSS = 01 (Source (FDOR) is in Y memory) */ ;********************************** ; Config EFCOP ;********************************** lfstart movep #$000,y:M_FCSR ; Reset the EFCOP movep #FIR_LEN-1,y:M_FCNT ; Set the counter for FIR_LEN Coefs movep #TEMP,y:M_FDBA movep #coefs,y:M_FCBA movep #$000,y:M_FACR ; Clear the FACR movep #$0,y:M_FDCH ; channel =1 movep #$000,y:M_FCSR ;FDOIE = 0 (No Filter Data Out Interrupt) */ ;FDIIE = 0 (No Filter Data Input Interrupt) */ ;FSCO = 0 (No shared coefficients) */ ;FPRC = 0 (State Initialization) */ ;FMLC = 0 (Single Channel Mode) */ ;FOM = 00 (Real FIR Filtering Mode) */ ;FUPD = 0 (No Filter Coefficient Update) */ ;FADP = 0 (Non-Adaptive Mode) */ ;FLT = 0 (Filter Type = FIR) */ ;FEN = 0 (Keep EFCOP Disabled for now) */ bset #23,x:M_DCR1 ; Enable DMA1 bset #23,x:M_DCR0 ; Enable DMA0 bset #0,y:M_FCSR ; Enable EFCOP jmp * |
EFCOP of the 56307 EVM
Started by ●July 18, 2003
