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sulkith · ‎05-21-2019

Hi, Would it be possible to use another modell like the BMA280 or the BMA253 for the NoMotion detection, without downloading a config file first? since the footprint for both of them seems to be the same, i could replace it by just swapping the chip and changing the Software a bit. The only difference is the PS Pin(11) which defines the Protocol version for the chip.What is the behavior of the BMA280/BMA253 if this Pin is not connected? Is this Pin actively pulled to GND or VDDIO or is the behavior completely undefined? Best Regards sulkith

sulkith · ‎05-20-2019

I"m triing to get the BMA456 running on a small Controller (Atmega32), the Controller features a Hardware I2C driver which is used directly. As written in the Datasheet(4.2.2) the BMA456 needs to be initialized with a configuration File. Since the controller in my project is very small I would like to use the Interrupt functionality without a big config string which needs to be stored in the Controller. Is this possible? In the datasheet it looks like this could be possible by writing directly to the FEATURES_IN(0x5E) Register. But this Register is used for more than one byte. The different bytes are addressed differently. So writing the anymotion "sub"-Registers should look like this? I2C_START 0x19(Address) 0x5E(Register) 0x00(SubRegister) 0x00 0xAA(Data for the Register(0x5E00)) 0x00 0x05(Data for the Register(0x5E02)) I2C_STOP Is it also possible to read the Registers? e.g. by I2C_START 0x19(Address) 0x5E(Register) I2C_STOP I2C_START I2C_READ I2C_READ .... I2C_STOP With this Code i am getting 0x4D 0x4D 0x4D, but i expected the Standard Values for these registers? Best Regards sulkith

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About sulkith

Re: BMA456 Interrupt features without config file

BMA456 Interrupt features without config file

About sulkith

Re: BMA456 Interrupt features without config file

BMA456 Interrupt features without config file

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