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Simulating LIN To GND for LIN bootloader, S12 MagniV

Question asked by Sarvraj Singh Ranhotra on Sep 27, 2018
Latest reply on Oct 4, 2018 by Daniel Martynek

Following the serial bootloader  for S12ZVL32 , MagniV family, flowdiagram, we integrated the Lin stack to implement the bootloader using LIN. 

To the outside world the board has just 3 pins, LIN, VDD, GND. So From application to enter into boot mode we are simulating a LIN to GND(short circuiting the 2 pins) in the dispatcher code. 

We put a watch on registers LP0DR  etc.. from LIN PHY, but none of  the registers seem to  change their value. 

Is it related to over current?

 

Is there a way to detect Lin to Gnd. ?

Thanks 

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