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Trouble modifiying kinetis bootloader to UART2 on KL25

Question asked by Carlos Gonzalez on Jan 10, 2018
Latest reply on Feb 7, 2018 by MERIGOT BERTRAND

Hi! 
  

  I download the Kinetis Bootloader 2.0.0 and try with the default pins and configuration (UART0) and it works. Now I want to modify to UART2 but have some troubles with it. Once I download my code to the board, I can´t connect with the board with the Kinetis Flash Tool. 

 

  I already change some variables of the code to use UART2 but still not working. 

 

   When initializing the default UART0 theres a line as follow:

 

SIM->SOPT2 = SIM_SOPT2_PLLFLLSEL_MASK // set PLLFLLSEL to select the PLL for this clock source
                        | SIM_SOPT2_UART0SRC(1); // select the PLLFLLCLK as UART0 clock source

 

But theres not SRC for UART2, does this affect? I initialize my UART2 clock as following  SIM->SCGC4 |= SIM_SCGC4_UART2_MASK;

 

 The question is: Is it posible to use bootloader with UART2? in case of yes, any idea of what can I be missing?

 

 

Thanks!!

 

 

CarlosG.

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