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About sinya
since
03-19-2019
05-23-2019
sinya
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6
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2
Solutions
04-04-2019
03:20 AM
Hi, 1. BMI160 supports significant motion in low power mode. 2. it does not depend on the gyroscope status. 3. it seems you got the significant motion interrupt in acc normal mode. 4. based on step 3: 1)firstly write 0x12 to register 0x7e , set MSB bit acc_us of register 0x40 to 1 in order to set acc power mode to low power mode. 2) set bit [3:0] of register 0x40 to 7 for 50hz ODR
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04-03-2019
04:45 AM
Missing some words: for item 5, refer to page 25 in the BMI160 Datasheet(significant motion).
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04-03-2019
04:43 AM
Hi, 1. Are you using the API code in the Github: https://github.com/BoschSensortec/BMI160_driver 2. The configuration sequence is right in your code. what are the value of these parameters? sig_mot_proof = ? sig_mot_skip = ? sig_mot_thres? you can firstly use the defalut register value to see the behavior. 3.Could you observe the waveform using salea logic analyzer to see i2c/spi, interrupt pin waveform during this process? 4. Could you read back all the registers after configure them to check if the configuration is successfully or not? 5. The significant motion is not easily tirggered like any motion because after motion detected, the skip time and proof time should also be fulfilled.(refer to page 27).
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03-19-2019
11:46 PM
The FIFO can be read by polling mode and interrupt mode. during interrupt mode, once the fifo water or full interrupt is triggered,there are data in the fifo. the fifo length will not be 0. during polling mode, make sure that the accessing fifo interval is grater than one frame. which mode are you using? can you record the normal working flow by salea logic analyzer then upload to the community? if lucky, better to upload the waveform while issue happens.
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03-19-2019
01:58 PM
one more comment: maybe it is better to add a judgement in function : static int8_t get_fifo_byte_counter(uint16_t *bytes_to_read, struct bmi160_dev const *dev) { .................. *bytes_to_read = (((uint16_t)data[1] << 😎 | ((uint16_t)data[0])); // add judgement here: if(0 !=*bytes_to_read ) rslt = BMI160_OK; else rslt = BMI160_E_INVALID_INPUT; return rslt; }
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