About michael_sensor

Hello again the procedure to wake up the bno: Suspend Mode --> Config Mode --> NDOF Mode doesnt work in my case. I always have to do Suspend --> Config --> Normal Power Mode --> NDOF. Is this normal? It seems like the error comes from the wake up function but im struggling to find the reason. this is my function: void wakeup_bno(void){ /* _First set Config Mode! */ uint8_t reg[2] = {BNO055_OPR_MODE_ADDR, BNO055_OPERATION_MODE_CONFIG}; m_xfer_done = false; twi_reg_write(BNO055_I2C_ADDR1, reg, 2); nrf_delay_ms(650); /* Enter Normal Mode to wake up*/ reg[0] = BNO055_PWR_MODE_ADDR; reg[1] = BNO055_POWER_MODE_NORMAL; m_xfer_done = false; twi_reg_write(BNO055_I2C_ADDR1, reg, 2); nrf_delay_ms(650); /* Operation Mode */ reg[0] = BNO055_OPR_MODE_ADDR; reg[1] = BNO055_OPERATION_MODE_NDOF; m_xfer_done = false; twi_reg_write(BNO055_I2C_ADDR1, reg, 2); nrf_delay_ms(650); } ... View more

I forgot to set the NDOF Mode in my wake up process.. so now I can see that the Calib Stat remains the same. But now i dont recieve correct values (Euler Headings). If I go throu the code step by step, it updates the values, but if the code runs normal on the board, the values dont update.. Any ideas what could be the reason for that? kind regards Michael ... View more

Hello Guys after I realised that the Oscillator was placed in the wrong way, I put a new BNO to the PCB. But still, in NDOF Mode the current consumption seems to be normal (like 10-12mA) and in Config oder Suspend Mode, the current rises up until 70mA.... What could be wrong with my design? any ideas? kind regards Michael ... View more

some additional Information: I read the SYSTEM_STATUS register (0x39) and it says 0x01 (ERROR). Then read SYS_ERR (0X3A) and it says that I have a Register Map Write Error (0x06). What does this mean? Michael ... View more