BMA456 intf_ptr

[KnightHeron]

Hi, I am trying to write a driver to communicate to the BMA456 from Cypress's CYBLE 212006-01 through SPI. I have been using your API provided here: 

https://github.com/BoschSensortec/BMA456-Sensor-API

I am writing the bus_read and bus_write functions, and I keep seeing dev-> intf_ptr. Do I need to initialize this pointer to something? I am just confused as to what this pointer should be doing. I know it is part of the device struct, but I do not see any examples using this pointer. 

This line of code is from bma4.c :   dev->intf_rslt = dev->bus_write(addr, data, len, dev->intf_ptr);

https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/bma4.c

Any help on this would be great, thank you. 

[Minhwan · Accepted solution]

Hello, 

There is some example code as below generic folder. 

https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/examples/bma456/generic/acceleromete...

Regarding intf, please check bma4_interface_selection function in bma4_common.c. 

https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/examples/bma456/generic/bma4_common....

Thanks 🙂 

[KnightHeron]

Thank you! common.c has helped