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Hibernation and programming problem

Haresh G
Intellectual 685 points

Hi,

I have tried a program for Hibernation and now i cant program the board again.

I tried from wake pin but its not working.

"Frequency out of range" error im getting

  • 0
    Guru 86745 points

    Hi,

       Try LM Flash Programmer "Debug Port Unlock Utility". It is at the "Other Utilities" tab. 

       Hold Reset Button while using Debug Port Unlock Utility.

    - kel

  • 0
    TI__Guru**** 244400 points

    Hello Haresh,

    Kel's answer is the solution to unlocking the device, but it would be interesting to know why it is not waking up from Hibernate.

    Can you please share the code, which TM4C device, custom or EVM or LaunchPad?

    Regards

    Amit

  • 0 in reply to Amit Ashara
    Intellectual 685 points

    Dear Amit,

    I have given SysCtlDelay(64); , which make the board to go Hibernation soon.

    #include <stdint.h>
    #include <stdbool.h>
    #include "utils/ustdlib.h"
    #include "inc/hw_types.h"
    #include "inc/hw_memmap.h"
    #include "driverlib/sysctl.h"
    #include "driverlib/pin_map.h"
    #include "driverlib/debug.h"
    #include "driverlib/hibernate.h"
    #include "driverlib/gpio.h"

    int main(void)
    {
    SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
    GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);
    GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x08);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);
    HibernateEnableExpClk(SysCtlClockGet());
    HibernateGPIORetentionEnable();
    SysCtlDelay(64);
    HibernateWakeSet(HIBERNATE_WAKE_PIN);
    GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_3, 0x00);

    HibernateRequest();
    while(1)
    {
    }
    }

  • 0 in reply to Haresh G
    TI__Guru**** 244400 points

    Hello Haresh,

    The SysCtlDelay at the clock speed mentioned would be way to fast to be able to give you time to erase the flash program. My suggestion is to use a GPIO in input mode with pull down enabled and a while loop for checking if it is 1 and then looping in it till it does not become 0. This way if you need to stop the program from executing tie it to 3.3V via a 1K Resistor and power cycle the board, allowing debug capability;ity to be restored (mentioned it earlier as well).

    Regards

    Amit