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AWR1642BOOST: To use Warm Reset pin externally ( pin 11 of J5)

Madan K Avhad
Expert 1260 points
Part Number: AWR1642BOOST

Hi,

we are looking use Warm Reset pin externally ( pin 11 of J5), on the same pin the reset switch is connected. if we give the signal to this pin, it must acts like as reset switch. what are the necessary changes to do??

  • 0
    TI__Guru 58035 points
    Hello Madan,
    I assume when you want to connect the warm reset signal to the reset switch you would like to disconnect the reset signal from that switch. Is that correct? That is not possible on the present schematics.
    But what you could do is use the SW1 switch on the EVM for this purpose. For this you need to disconnect the GPIO1 signal from this switch and by removing R72. Change R73 to 100ohms and R68 to 10K. Wire the warm reset signal to pin 4 of the SW1 switch. With this you can use the SW1 for warm reset.

    You can refer to the schematics and assembly pdfs of the AWR1642BOOST board for help you find the location of these components.

    Regards,
    Vivek
  • 0 in reply to Vivek Dham
    Expert 1260 points

    Hi Vivek,

    I am clearing the requirement once, we have one spdt switch interfaced externally to GPIO_19, at low signal it start the sensor(this configured in util/src/cli.c). as well as we want to stop sensor when switch signal is high, the gpio is reading done in mss/main.c to stop the the sensor. first attempt it will perfectly start and stop the sensor, but in second attempt it is failed. so i wired the high signal to reset switch sw2 of EVM, when sdpt output is high, it will reset the EVM and start waiting for spdt low signal to start the sensor.

    But this case i don't want wired up the reset switch(SW2) directly  by spdt switch output. so i want  way how we can reset by hardware by hardwiring any other place instead of sw2. Or if there any way to do by software please suggest that one. Is any software API or function which could be called in mss/main.c to reset the EVM. 

  • 0 in reply to Madan K Avhad
    TI__Guru 58035 points
    Hello Madan,
    If I understood you correctly you are trying to start and stop the sensor using a signal on GPIO_19 and for this you have connected the GPIO_19 signal to and external SPDT switch. Are you using level trigger or edge triggering for this?
    I could not understand what you are attempting to do with SW2 switch for this, could you again clarify that part?


    Regards,
    Vivek
  • 0 in reply to Vivek Dham
    Expert 1260 points
    it was just trial, does it work. it works, but i don't want any hardwire to SW2.
    The SPDT is level triggered. Simply i using GPIO_read API.
  • 0 in reply to Madan K Avhad
    TI__Guru 58035 points
    OK. So could you use SW1 for that purpose?