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About Coleman
since
04-23-2021
11-15-2021
Coleman
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11-15-2021
03:38 AM
Hello, Thank you for the reply. I understand that when I enable low-g interrupt in Low-power mode 2, BMA253 will spend more time in normal mode to take measurements to see if low-g interrupt condition is met or not.
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11-12-2021
12:06 PM
Hello I am reading two Sensor data (Acceleration data and Temperature sensor) on BMA253. And using Orientation recognition and Low-g interrupt. I am using Low-power Mode 2 (please see my previous post.) The bandwidth = 1kHz, and the sleep duration = 25ms. Today I measured the current consumption of my board using a Digital Multi Meter. I realized that the current comsumption of BMA253 in Low-power Mode 2 wasn't as low as the current consumption that is mentioned in the datasheet. The current consumption was almost close to what was mentioned for the Normal Mode, which is 130 uA. I measured the current consumption with only the orientation interrupt enabled, then the current consumption was about 66 uA. But when I measured the current consumption with the low-g interrupt enabled, then the current consumption was about 130 uA, even though the power mode was in Low power Mode 2. I assumed the current consumption was going to be around 66 uA, but the result was different. Am I misunderstanding something? Why does the current consume more than 66 uA (close to 130 uA) in Low power Mode 2? Thank you in advance.
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11-01-2021
03:23 AM
Hello BSTRobin, I map the orient detection and low-g detection to INT1.
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11-01-2021
03:08 AM
Hello BSTRobin, My application uses the interrupt but does not read the INT1 pin status. It calls bma2x2_get_intr_orient_stat() and bma2x2_get_intr_stat() function in bma2x2.c. https://github.com/BoschSensortec/BMA2x2_driver Version of bma2x2 sensor driver is 2.0.8.
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11-01-2021
02:44 AM
Thank you for the reply. In my software, I have initialized the GPIO ports to Input but have not used to read data from that input pin (the input data of INT1 is not used in my master device). So no I don't encounter any problem. But the problem I had was that even when I put the master device in sleep mode, and the BMA253 in DEEP SUSPEND Mode, there was some 0.10 mA current consumption on my board. So I was looking over my source code.
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