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    BMG250 stuck at SUSPEND power mode

    BMG250 stuck at SUSPEND power mode

    WirelessMan
    Member

    Hello!  I am currently trying to make my BMG250 working, but it is always in suspended mode from startup. I can read ID, temperature and read/write some configuration registers, but nothing happens when I attempt to change power mode to normal. And all other readings are zeros.

    So my init procedure looks like that: 

     

    void BMG250_Init(SPI_DEVICE spi)
    {
    	bmg250.device = spi;
    
    	HAL_GPIO_WritePin(bmg250.device.cs_port,bmg250.device.cs_pin,GPIO_PIN_SET); // CS pin high
    	BMG250_IO_ReadID(); 	// Read from reg 0x00 to enable SPI mode
    	HAL_Delay(10);			// Delay 0x00
    	BMG250_IO_Start(); 		// Write 0x15 to 0x7E reg
    	HAL_Delay(1000);		// Waiting for reboot
    	BMG250_IO_ReadID();		// Read ID
    	BMG250_IO_ReadStatus(); // Read PMU status
    
    }

     

     And I end up with this

    WirelessMan_1-1647769700840.png

     

    I checked everything:

    • Power is OK. 3.3V and at least 300mA available
    • SPI works properly according to the logic analyzer
    • SPI speed is 1MHz
    • Rebooting, restarting, trying different power modes does not help
    • Error registers are clear

     

    I designed my code according to https://github.com/BoschSensortec/BMG250-API

    But it still does not work.

     

    Please help me!

    5 REPLIES 5

    BSTRobin
    Community Moderator
    Community Moderator

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