About ASchm.3

ASchm.3 · 2021-01-18

Hi, I want to drive an ISM330DHCX by an FPGA using SPI. Due to the fast operation and the exact timing I can realise this way, a few questions occured.Data sheet fig. 6 details the SPI timing. There is no value given for minimum time for CS=HIGH, i.e...

ASchm.3 · 2020-08-13

I'm testing a system with a number of ISM330DHCX, generating the CE signals apart from the SPI component. Having a number of sensors on the bus (by means of CE only one of them active at any given time) I read sometimes a wrong WHO_AM_I-value. Bus cl...

ASchm.3 · 2021-02-08

Hi Eleon,finally I did a test - it's the diode. Removing the diode speeds up the communication, i.e. the time between two bus cycles is decreased.best regardsAxel

ASchm.3 · 2021-02-03

Hi Eleon,there is no special code for the module. But the commercial module is designed for both 5 V and 3.3 V operation. Within the SPI data and clock lines there are transistors for voltage adaptation, for CS there is a diode. I assume (just an ass...

ASchm.3 · 2021-01-29

Hi Eleon,thanks for the information. Regarding DEVICE_CONF in CTRL9_XL I opened an issue on Github, and I received the answer that it is a bug indeed. They will fix it in the examples.Regarding the other issues, I implemented a minimum time for CS=HI...

ASchm.3 · 2020-09-04

Hallo Niccolo,thanks for your answer. Regarding your questions:1) I can confirm proper timing for the CS. In case of testing directly connected to Raspi, the Raspi SPI component does the CS setting with correct timing. In case of my adapter (to enabl...

ASchm.3 · 2020-09-02

Hallo Niccolo,thanks for your answer. Shortly answering your questions:after communication the SDO line might remain in the last state it is for the last bit, I assumeCS pin is fine. I'm sure about, even if not shown in the picture.schematics is not ...

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ISM330DHCX - SPI driven by FPGA - some questions

ISM330DHCX: Hi, is there any known issue regarding the WHO_AM_I of ISM330DHCX, when having a number of them on one bus? Sometimes I read 0x48 instead of the expected 0x6B. There is no issue with SPI speed (10 MHz or 1 MHz tested).

Re: ISM330DHCX - SPI driven by FPGA - some questions

Re: ISM330DHCX - SPI driven by FPGA - some questions

Re: ISM330DHCX - SPI driven by FPGA - some questions

Re: ISM330DHCX: Hi, is there any known issue regarding the WHO_AM_I of ISM330DHCX, when having a number of them on one bus? Sometimes I read 0x48 instead of the expected 0x6B. There is no issue with SPI speed (10 MHz or 1 MHz tested).

Re: ISM330DHCX: Hi, is there any known issue regarding the WHO_AM_I of ISM330DHCX, when having a number of them on one bus? Sometimes I read 0x48 instead of the expected 0x6B. There is no issue with SPI speed (10 MHz or 1 MHz tested).