Getting high current in low power mode


(Goshantry) #21
    while( 1 )
    {

    	SX1272Reset();

    	SX1272AntSwDeInit();

    	DelayMs(1);

    	SX1272Write(REG_DIOMAPPING1, 0xFF);
    	SX1272Write(REG_DIOMAPPING2, 0xFF);


    	GpioInit( &SX1272.DIO0, RADIO_DIO_0, PIN_ANALOGIC, PIN_PUSH_PULL, PIN_NO_PULL, 0 );
    	GpioInit( &SX1272.DIO1, RADIO_DIO_1, PIN_ANALOGIC, PIN_PUSH_PULL, PIN_NO_PULL, 0 );
    	GpioInit( &SX1272.DIO2, RADIO_DIO_2, PIN_ANALOGIC, PIN_PUSH_PULL, PIN_NO_PULL, 0 );
    	GpioInit( &SX1272.DIO3, RADIO_DIO_3, PIN_ANALOGIC, PIN_PUSH_PULL, PIN_NO_PULL, 0 );
    	GpioInit( &SX1272.DIO4, RADIO_DIO_4, PIN_ANALOGIC, PIN_PUSH_PULL, PIN_NO_PULL, 0 );
    	GpioInit( &SX1272.DIO5, RADIO_DIO_5, PIN_ANALOGIC, PIN_PUSH_PULL, PIN_NO_PULL, 0 );
    	DelayMs(1);

    	SX1272Write(REG_OPMODE, 0x01);
    	DelayMs(1);

    	SX1272Write(REG_OSC, 0x07);
    	DelayMs(1);

    	SX1272Write(REG_OPMODE, 0x00);
    	DelayMs(1);

    	SpiDeInit(&SX1272.Spi);
    	DelayMs(5);

    	UartDeInit(&Uart1);
    	DelayMs(1);



    	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_SET);
    	DelayMs(700);




    	/*Configure GPIO pins : PC13 PC14 PC15 */
    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    	    	    	  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    	    	    	  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    	    	    	  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

    	    	    	  /*Configure GPIO pins : PH0 PH1 */
    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    	    	    	  GPIO_InitStruct.Pull = GPIO_PULLUP;
    	    	    	  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    	    	    	  HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);

    	    	    	  /*Configure GPIO pins : PA0 PA1 PA2 PA3
    	    	    	                           PA4 PA5 PA6 PA7
    	    	    	                           PA8 PA9 PA10 PA11
    	    	    	                           PA12 PA13 PA14 PA15 */
    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
    	    	    	                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7
    	    	    	                          |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
    	    	    	                          |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    	    	    	  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    	    	    	  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    	    	    	  /*Configure GPIO pins : PB0 PB1 PB2 PB10
    	    	    	                           PB11 PB12 PB13 PB14
    	    	    	                           PB15 PB3 PB4 PB5
    	    	    	                           PB6 PB7 PB8 PB9 */
    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
    	                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7
    	                          |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
    	                          |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    	    	    	  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    	    	    	  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    	    	    	  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    	    	    	  DelayMs(1);

   // 	    	    	  GpioInit( GPIOA, RADIO_RESET, PIN_INPUT, PIN_PUSH_PULL, PIN_PULL_UP, 1 );

  /*  	    	    	  GpioInit( &SX1272.Spi.Nss, RADIO_NSS, PIN_OUTPUT, PIN_PUSH_PULL, PIN_PULL_DOWN, 0 );

    	    	    	  GpioInit( &SX1272.Spi.Mosi, RADIO_MOSI, PIN_OUTPUT, PIN_PUSH_PULL, PIN_PULL_DOWN, 0 );
    	    	    	  GpioInit( &SX1272.Spi.Miso, RADIO_MISO, PIN_OUTPUT, PIN_PUSH_PULL, PIN_PULL_DOWN, 0 );
    	    	    	  GpioInit( &SX1272.Spi.Sclk, RADIO_SCLK, PIN_OUTPUT, PIN_PUSH_PULL, PIN_PULL_DOWN, 0 );
    	    	    	  GpioInit( &SX1272.Spi.Nss, RADIO_NSS, PIN_OUTPUT, PIN_PUSH_PULL, PIN_PULL_UP, 0 );
*/
 //   	    	    	  GpioInit( GPIOA, RADIO_RESET, PIN_INPUT, PIN_PUSH_PULL, PIN_NO_PULL, 1 );

    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_4;							// NSS PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    	    	    	  GPIO_InitStruct.Pull = GPIO_PULLUP;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_5;							// CLK PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_7;							// MOSI PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_6;							// MISO PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    	    	    	  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_2;							// RADIO TX SWITCH PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_13;						// RADIO RX SWITCH PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_12;						// RADIO RESET SWITCH PIN
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12
    	    	    			  	  	  	    |GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;						// DIO PINS
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);


    	    	    	  GPIO_InitStruct.Pin = GPIO_PIN_8;						// DIO PINS
    	    	    	  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    	    	    	  GPIO_InitStruct.Pull = GPIO_NOPULL;
    	    	    	  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    	    	    	  DelayMs(1);
    	    	    	  
		HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_SLEEPENTRY_WFI );

}

(Goshantry) #22

This is my current code


(Jac Kersing) #23

@goshantry
Please read how do I format my forum post.


(Gig) #24

In your latest code, you could maybe save some current by removing the pulldown/pullup on the GPIO that really don’t need them, i.e. everything but NSS.
Also, are you using the RTC with the LSE? You could scrap out a fraction of a uA if you’re willing to use the LSI.

Lastly: what is the value of VDD? If it’s 3.3V… well, replace your regulator with a 1.8V one. You might have to downclock the STM32 in RUN mode, but it’ll save some more current.


(Goshantry) #26

Found one pin which was floating and drawing around 1.5uA. Got my current consumption down to 8 uA. Thanks a lot everyone for your valuable inputs.


(Vcj Huy) #27

I’m struggling with the power consumption too. Can you share your codes? Thank you in advance.