Hello everyone, hope everyone is doing fine. I'm a newbie in ADSP 218x
(2181). I have strong micro-controller background .... I have some problems in
BDMA, Please be patient to answer my simplest questions.
question about BDMA are as follows:
1) Is BDMA used to download the program (that we burn in flash memory) from any
flash into the DSP program memory and then exectute it ???
2) Is it enough to configure the control registers i.e. BIAD, BEAD, BTYPE, BDIR,
BCR, BMPAGE etc.etc... Please give a small assembly code for configuring them in
the required sequence.
3) abt BWCOUNT, how do we know how much data is required .....
4) what are the BMODE and MMAP ....
5) what is BMWAIT states .....
your replies will be greatly appreciated ... thanking you in advance ...
take care
Regards
Ahmad
ADSP BDMA queries
Started by ●August 18, 2005
Reply by ●August 18, 20052005-08-18
Pleae look the code you will get ALL answer
#define BWCount 0x3FE4 // BDMA WORD COUNT REGISTER
#define BControl 0x3FE3 // BDMA CONTROL REGISTER
#define BExtAdd 0x3FE2 // EXTERNAL ADD REGISTER
#define BIntAdd 0x3FE1 // INTERNAL ADD REGISTER
#define PCS 0x3FE6
.SECTION/DM data1;
.VAR ARR[10]= "TEST.DAT";
.SECTION/PM program;
main: I1= ARR;
AX0 = 0X0007;
DM(BControl) = ax0 ; // CONFIGURE THE BMPAGE,BCR,BDIR,BTYPE
ax0 = 0X0000;
DM(BExtAdd) = ax0 ; // LOAD THE EXTERNAL ADD
DM(BIntAdd) = I1; // LOAD THE INTERNAL ADD
ax0 = 0x2000;
DM(PCS) = ax0 ; // wait cycles
ax0 = 0X10;
DM(BWCount)=AX0; // Transmit 10 NUMBER
nop;
nop;
nop;
IDLE;
If you want more explanation,let me know.
Regards
Chandrakant D.
Wavelet Group
Pune.
On Thu, 18 Aug 2005 10:56:40 +0530, <ahmad_s03@ahma...> wrote:
> Hello everyone, hope everyone is doing fine. I'm a newbie in ADSP 218x
> (2181). I have strong micro-controller background .... I have some
> problems in BDMA, Please be patient to answer my simplest questions.
>
> question about BDMA are as follows:
>
> 1) Is BDMA used to download the program (that we burn in flash
> memory) from any flash into the DSP program memory and then exectute
> it ???
>
> 2) Is it enough to configure the control registers i.e. BIAD, BEAD,
> BTYPE, BDIR, BCR, BMPAGE etc.etc... Please give a small assembly code
> for configuring them in the required sequence.
>
> 3) abt BWCOUNT, how do we know how much data is required .....
>
> 4) what are the BMODE and MMAP ....
>
> 5) what is BMWAIT states .....
>
> your replies will be greatly appreciated ... thanking you in advance ...
> take care > Regards
> Ahmad --
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
#define BWCount 0x3FE4 // BDMA WORD COUNT REGISTER
#define BControl 0x3FE3 // BDMA CONTROL REGISTER
#define BExtAdd 0x3FE2 // EXTERNAL ADD REGISTER
#define BIntAdd 0x3FE1 // INTERNAL ADD REGISTER
#define PCS 0x3FE6
.SECTION/DM data1;
.VAR ARR[10]= "TEST.DAT";
.SECTION/PM program;
main: I1= ARR;
AX0 = 0X0007;
DM(BControl) = ax0 ; // CONFIGURE THE BMPAGE,BCR,BDIR,BTYPE
ax0 = 0X0000;
DM(BExtAdd) = ax0 ; // LOAD THE EXTERNAL ADD
DM(BIntAdd) = I1; // LOAD THE INTERNAL ADD
ax0 = 0x2000;
DM(PCS) = ax0 ; // wait cycles
ax0 = 0X10;
DM(BWCount)=AX0; // Transmit 10 NUMBER
nop;
nop;
nop;
IDLE;
If you want more explanation,let me know.
Regards
Chandrakant D.
Wavelet Group
Pune.
On Thu, 18 Aug 2005 10:56:40 +0530, <ahmad_s03@ahma...> wrote:
> Hello everyone, hope everyone is doing fine. I'm a newbie in ADSP 218x
> (2181). I have strong micro-controller background .... I have some
> problems in BDMA, Please be patient to answer my simplest questions.
>
> question about BDMA are as follows:
>
> 1) Is BDMA used to download the program (that we burn in flash
> memory) from any flash into the DSP program memory and then exectute
> it ???
>
> 2) Is it enough to configure the control registers i.e. BIAD, BEAD,
> BTYPE, BDIR, BCR, BMPAGE etc.etc... Please give a small assembly code
> for configuring them in the required sequence.
>
> 3) abt BWCOUNT, how do we know how much data is required .....
>
> 4) what are the BMODE and MMAP ....
>
> 5) what is BMWAIT states .....
>
> your replies will be greatly appreciated ... thanking you in advance ...
> take care > Regards
> Ahmad --
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
