AnsweredAssumed Answered

MMA9555L PEDOMETER.STEPCOALESCE register not updated

Question asked by Amine Kechouindi on Nov 21, 2017
Latest reply on Nov 29, 2017 by Jacques Trichet

Hello,

 

We are developing a project based on MMA9555L pedometer. 

 

The STEPCOALESCE register is not updeted. 

 

Following pedometer application configuration after power on:

 

x00 x00 x00 x00 x00 x01 x00 x00 xaf x50 x04 x03 x05 x01 x00 x00 x00

 

Following our requested pedometer application configuration:

x00 x00 x00 x00 x00 x01 x80 x00 xb4 x64 x04 x83 x05 x82 x00 x00 x01

 

Following the read back of pedometer application configuration (Note that CONFIG bit is reset correctly):

x00 x00 x00 x00 x00 x01 x00 x00 xb4 x64 x04 x83 x05 x82 x00 x00 x00

 

All parameters are updated correctly except STEPCOALESCE.

 

We have also tried a single register update with offset  = 0x10 without success.

 

Question 1: Why the power on configuration do not match default defined on data sheet (0x01)?

Question 2: Why the update is not working?

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