How to reset HIFI DSP core of RT685?

[JerryQian_132]

Hi,

There are found APIs in fsl_dsp.h. They are

1. DSP_Init()
2. DSP_Deinit()
3. DSP_Start()
4. DSP_Stop()

I have tried DSP_Stop() and DSP_Start(). The results seem pause and resume the HIFI DSP core. I haven't found the reset.

If switch to DSP_Deinit() and DSP_Init(), have to re-copy the DSP image to the memory regions which are assigned to DSP code. 

Is there any method to reset HIFI DSP core of RT685 without re-copying the DSP image?

[jingpan · Accepted solution]

Hi @JerryQian_132 ,

You can refer to section 4.5.3.2 in user manual. There is a reset contol0 register which can reset DSP.

Regards,

jing