Problem in Clock output Generation

[Santhamurthy R]

Posted on June 20, 2017 at 13:43

Hello All,

I am working on SPC560B54L5 board using SPC5studio version 5.2.3.

I am trying to generate the clock output using the XOSC frequency. I  enabled the corresponding GPIO (PA[0] for CLKOUT) by selecting the appropriate alternate function. In main function after doing the componentsinit(),  initialization of spc_clock_init(); is done for output clock selection. Later I am enabling the output clock by writing to the CGM.OC_EN register.

But still I am unable to find the clock output on the corresponding pin. (PA[0]-> X1(19)).

I am attaching my test application for reference, kindly check and provide your valuable suggestion towards the issue.

Thanks in Advance,

With Regards,

R.Santhamurthy

[Erwan YVIN · Accepted solution]

Posted on June 20, 2017 at 15:13

Hello ,

You can see in your discovery board the differents lines X1,X2,X3,X4.

cf Document B_DISCOVERY.

the pin nearest X1 is 1 and so on ...(2,3 until 19)

Best Regards

Erwan

________________ Attachments : DM00094991_B_DISCOVERY.pdf : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HyAW&d=%2Fa%2F0X0000000bA4%2FXKw6NjiytMc_DkLx7Tl1uPo999KwecNm8RW6fyKJeHk&asPdf=false

[Santhamurthy R]

Posted on June 20, 2017 at 15:51

Hi Erwan,

Thanks for your Reply.

I am clear with the pin configuration and the pin numbers in my discovery board.

With my previous post in this chain, I am trying to convey that, If I try to check the frequency of the output clock at X1-19 (CLKOUT pin) using oscilloscope, I am not getting the clock output. As per the configuration in the application attached with the post, I should get 16MHz clock frequency output at X1-19 in my board. But I am failing to get the result.

Kindly check the attached test application and support in getting the problem resolved.

Thanks in Advance,

With Regards,

R.Santhamurthy