I noticed that there is an initialization issue in AHRS and INS app.
Is it necessary if I want to get data from burst read 0x3D?

I have now recovered the whole EEPROM bin which I backed up.
Everything works fine, including all single reads and 0x3E burst read.
So maybe it confirms that the INS app from https://developers.aceinna.com/code/apps is having some problem(?
Or maybe the way I uploaded the firmware is incorrect.

Following the ST-link method instruction.
I did the folowing:

1. download the bin file of firmwares
2. start uploading from the address 0x08010000

Do I have to set the ending address or something?
If this is not the problem, then perhaps I 'll need to ask for a customized bin file with my SN number 2008400344.
And I'd like to have the VG_AHRS firmware.
I couldn't get data from VG_AHRS at first, so I turned to the INS app.
After all , I just want to get the angle data + rate data.

Truly appreciate!
Looking forward to any reply!

@cek @Li-YiFan
Sincerely looking forward for your help.
My SN number is 2008400344

My SN number is 2008400344

@Li-YiFan
Sincerely looking forward for your help.

@cek
looking forward for your help.
Sincerely

@chengyong Thanks for your reply.
But I have a clearer picture now, so I gotta ask another question.
I really need a quick reply now. Hope someone could answer me as soon as possible~
另外中文溝通也行。

As in the photos below, I am able to read data by sending 0x56, but nothing from 0x04.
The third photo shows the output of every single read.
Also I am able to burst read from 0x3E but not 0x3D.

I am now using arduino to transfer SPI signals.
I used STlink to flash the software to INS app by the method shown here:
(I downloaded the bin file from here

I don't know if it is the hardware problem or the software problem.
Please help me investigate.
Appreciate!

Hi, I followed the process below, but still don't get what I want.

1. flash the IMU to the newest VG_AHRS/INS program.

2. inside program:
   nRST->LOW
   initialize SPI
   sleep 500ms
   nRST->HIGH
   sleep 500ms
   DRDY->LOW
   

3. CS(using GPIO)->LOW
   transfer 0x04, 0x00
   transfer 0x00, 0x00
   CS(using GPIO)->HIGH
   

Note:

1. I choose to use GPIO as CS control, because the spidev automatically pull high the CS between data blocks. So I use GPIO to always keep it low during transmit and receive.
2. According to the time printed out in my program, the time span between transmit and receive is about 500 usec, which is greater than 20 usec, so I expect it to be working.
   
3. Reading most of the registers give back 0x00s, only some give back weird results, like 0x37, 0x56, 0x57.
   transmit 0x37 gives back 0x00 0xc0
   transmit 0x56 gives back 0x60 0x00
   transmit 0x57 gives back 0x00 0x06
   I guess this is because the data shift for 1 bit or something, so this would be a minor problem.
   But except these, the other registers don't give any information.

I'd like to know what else I can do to receive some information about the accelerations, rates, and angles.
Thanks!

I've bought an openimu300zi without EVK.
I want to connect the device to arduino and connect the arduino to PC by arduino usb port.
First I'd like to know will it work?
And second, if I want to upload the algorithm codes to the device, is ST-link necessary?