CodeWarrior Development Tools中的主题 Re: SSI using K60 Processor Expert

SSI using K60 Processor Expert

davidzhou — Fri, 15 Feb 2019 21:53:13 GMT

Hi ,

I have TWR-K60F120M Tower Module.

I am trying to set up and use SSI_LDD from Processor Expert.

The Receive Clock is set to pin PTE9.

Code:

LDD_TDeviceData *SSI_Device;
SSI_Device= SSI1_Init(NULL);

int16_t data;

void Main_Task ( uint32_t param )
{
while (1) {
    SSI1_ReceiveBlock ( SSI_Device, &data, sizeof(data));
    ...
}
}

First thing first, I scoped and there is no clock output on the PTE9 ( A43 - primary size connector)

What I have missed?

The PE configuration: Screen Dump attached.

Thank You,

David Zhou

Re: SSI using K60 Processor Expert

davidzhou — Fri, 15 Feb 2019 21:55:18 GMT

I also tried Receive Clock Output Pin with PTC9, PTC6, PTA14.

The secondary interface board is not plugged in. (Only the primary board runs the program).

Thx,

David

Re: SSI using K60 Processor Expert

Hui_Ma — Mon, 18 Feb 2019 06:06:57 GMT

Hi David,

From the Processor Expert [SSI_LDD] component setting, the Master clock is disable.

The SAI_RX_BCLK is an input when externally generated and an output when internally generated.

If required receive bit clock with internally generated, it need enable Master clock at first.

Wish it helps.

Have a great day,
Mike

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Re: SSI using K60 Processor Expert

davidzhou — Tue, 19 Feb 2019 15:25:03 GMT

Hi Hui Ma,

I enabled Master Clock, there is an output clock from Master Clock pin, but Receiver Clock has no output, also the receiver clock rate has to be picked as a different rate of the master clock. The software cannot read the input data, and there is no interrupt generated.

Now I use the SPI interface to read the encoder chip. It works.

Thank you for your help.

David Zhou