• State
  • Replies 5 replies
  • Subscribers 30 subscribers
  • Views 108 views
  • Users 0 members are here
Support feedback
Options
Options
Related

MSPM0G3107: How to wake up the Microcontroller Mspm0g3107 using pin PA26 which is used as analog pin

pradeep kumar
Prodigy 10 points
Part Number: MSPM0G3107
Other Parts Discussed in Thread: MSPM0G3507, SYSCONFIG

Tool/software:

Hello Team,

We are using the MSPM0G3107 microcontroller, with pin PA26 configured as an analog battery voltage input. When the voltage on this pin rises above 1 V, the microcontroller should wake up. Conversely, when the voltage on PA26 falls below 1 V, the microcontroller should enter sleep mode. Could you please guide us on how to implement this functionality?

           

  • 0
    TI__Expert 3440 points

    Hi,

    I will reply to you by tomorrow.

    Best Regards,
    Peter

  • 0 in reply to Peter Jiang
    Prodigy 10 points

    Hi Peter,

    could you please let us know how to make the MSPM0G3107 microcontroller, with pin PA26 configured as an analog battery voltage input. When the voltage on this pin rises above 1 V, the microcontroller should wake up. Conversely, when the voltage on PA26 falls below 1 V, the microcontroller should enter sleep mode.

    Best Regards,

    Pradeep

  • 0 in reply to pradeep kumar
    TI__Expert 3440 points

    Hi Pradeep,

    I believe you can first refer to the code sample "adc12_triggered_by_timer_event_stop" in our MSPM0 SDK .

    "Your MSPM0_SDK Download Folder\mspm0_sdk_xxxx\examples\nortos\LP_MSPM0G3507\driverlib\”

    Best Regards,
    Peter

  • 0 in reply to Peter Jiang
    Prodigy 10 points

    Hello Peter,

    Thank you for your support.

    I found the below code:-

    #define ADC12_BIT_RESOLUTION (12)
    #define ADC12_REF_VOLTAGE (3.3)
    #define ADC12_MONITOR_VOLTAGE (1.5)
    #define ADC12_MONITOR_VALUE \
        ((1 << ADC12_BIT_RESOLUTION) * (ADC12_MONITOR_VOLTAGE / ADC12_REF_VOLTAGE))

    int main(void)
    {
        SYSCFG_DL_init();

        /* Configure window comparators to detect changes above and below VDDA/2 */
        DL_ADC12_configWinCompHighThld(
            ADC12_0_INST, (uint16_t) ADC12_MONITOR_VALUE);

        DL_ADC12_configWinCompLowThld(
            ADC12_0_INST, (uint16_t) ADC12_MONITOR_VALUE);

        NVIC_EnableIRQ(ADC12_0_INST_INT_IRQN);

        DL_TimerG_startCounter(TIMER_0_INST);

        while (1) {
            __WFI();
        }
    }

    void ADC12_0_INST_IRQHandler(void)
    {
        switch (DL_ADC12_getPendingInterrupt(ADC12_0_INST)) {
            case DL_ADC12_IIDX_WINDOW_COMP_HIGH:
                DL_GPIO_clearPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
                break;
            case DL_ADC12_IIDX_WINDOW_COMP_LOW:
                DL_GPIO_setPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
                break;
            default:
                break;
        }
    }
    Here LED is becoming on and off based on the ADC12_MONITOR_VALUE. but i want to make the mcu wake up and sleep .how this can be achieved?
    Best Regards,
    Pradeep
  • 0 in reply to pradeep kumar
    TI__Expert 3440 points

    Hi Pradeep,

    If you have set the low power mode in the Sysconfig, then you can use "__WFI()" or "__WFE()" to enter the corresponding low power mode.

    Best Regards,
    Peter