DSP56F807 Programming failed via Once JTAG

[jackhsu]

Hi ,

Good day.

We are third party programmer.

We refer to the AN1935 to implement the algo and programming tool on our programmer.

Most of ICs are able to be programmed, but some ICs are unable to be programmed.

I checked the documentation of EVM and found the IRQA and IRQB are pull up, and our programming tool is floating on IRQA and IRQB pins.

is it possible IRQA and IRQB cause programming issue if they are floating?

Thanks.

Jack

[jackhsu]

Hi XiangJun Rong,

Can you share the file DSP56F807_peripheral_regs.h to me?

We want to try it. Thank you.

Jack

[xiangjun_rong]

Hi,

I attach the *.h, pls refer to it.

Hope it can help you

BR

XiangJun Rong

[jackhsu]

Hi XiangJun Rong,

Thanks for your information.

May i know how to disable the IRQA&B via Once JTAG?

Any source code for reference?

Thanks.

Jack

[xiangjun_rong]

Hi

#include "DSP56F807_peripheral_regs.h"

You can use either
asm(bfclr #$0012,X:0xFFFB);

or
asm(bfclr #$0012,X:IPR);

The IPR is defined in "DSP56F807_peripheral_regs.h"

Hope it can help you

BR

XiangJun Rong

[xiangjun_rong]

Hi,

I suppose that what you want is to disable IRQA/IRQB interrupts, you'd better write IPR register by clearing both IAL0 bit and IBL0 bit, pls refer to section 4.7 Interrupt Priority Register (IPR) in user manual of DSP56F801~7.

It is okay to connect a pull-up resistor on both IRQA/IRQB.

Hope it can help you

BR

XiangJun Rong