For my ADXL345 finally i'm getting high data rates 3127HZ. Still 73 samples less for 3200HZ. Is it normal? or it is possible to get 3200HZ.
How are you measuring 3127 samples per second? Have you configured one of the interrupt pins to behave as a data ready and used an oscilloscope to measure its update rate? If so, what rate is that signal pulsing at? Have you considered using that signal to drive an interrupt in your processor, so that you can synchronize your data acquisition with the ADXL345's data production?
I simply stored the data from sensor to a FRAM for 1 second. And then read them back. Here i haven't used any interrupts.
Thank you. Aren't you measuring your rate of data acquisition, not the ODR of the ADXL345? As we have offered in other discussions, the ADXL34x devices produce data using an internal clock, which is independent of your communication signals (when the timing of those signals is within datasheet-provided guidelines). When new data is ready, the data-ready signal (when configured correctly) will pulse. This signal provides an opportunity for you to measure the ODR, if you would like to know what a particular unit is doing.
Just following up. Has this issue been resolved? Did any of the posts earn the CORRECT ANSWER designation? If so, we always appreciate you providing that and are eager to learn if there is more information that you need to address this issue. We appreciate your use of this forum and look forward to future discussions with in it.
Retrieving data ...