Hi,
I am learning S32K144 LPIT, I have several questions for this module:
1.what is the internal triggers mean in TCTRLn[TRG_SRC] in the Reference Mannual, if it means the trigger output from the other channels,what is the difference with the channel chainning?
2.I use the built in example S32K144_Project_HelloInterrupts in S32DS IDE and add two lines to configure the channel0 trigger output as trigger source of channel1,and also set the CHAIN bit of channel1 to chain channel1 and channel0,the channel 1 is configured to gennerate the interrupt while the channel0 not,the ISR is to toggle one LED,when download the code to the MCU, it seems that the LED is always on,i cannot find the cause,appreciate for replying in advance.
Hi fenghr7,
Internal triggers means trigger output from the other channels.
In my opinion, the different is:
When chain, the channel can only accept the trigger from previous channel timeout.
Internal triggers can accept all of the channels.
Hi fenghr7,
Please refer the lpit_periodic_interrupt_s32k144 example of S32SDK_S32K1xx_RTM_3.0.0.
Then modify the example by refer the images shown below:
Then you will see the Blue LED toggled according to the value of period in lpit1_ChnConfig1.
Best Regards,
Robin
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