How to use SPI to obtain data from MPU9250 through the HAL library?

Studying_sss · Published on 2017-12-25 18:54

This post was last edited by Studying_sss on 2017-12-25 19:01 I need help from the experts on the Internet. How can I get the data of MPU9250 using SPI through HAL library? Please explain in detail

RM-MPU-9250A-00.pdf (508.01 KB, downloads: 13) Data acquisition:

mpu9250Type.c (4.46 KB, downloads: 23)

mpu9250Type.h (1.81 KB, downloads: 20)

huo_hu · Published on 2017-12-26 15:37

The hal library just builds a framework for you and initializes spi. You have to do the rest yourself.

Studying_sss · Published on 2017-12-26 16:21

huo_hu posted on 2017-12-26 15:37 The hal library just builds a framework for you and initializes spi. You have to do the rest yourself

Yes, I just want to know how to configure MPU9250 to get the data correctly. Now there is data, but the acceleration is not right. There is data on the X and Y axes. I use the functions HAL_SPI_Transmit and HAL_SPI_Receive in it to do it

huaiqiao · Published on 2017-12-27 16:45

MPU9250 definitely has registers. Needless to say, when you operate it, you will definitely operate its registers. This is inevitable. Also, to obtain data through spi, you must operate the DR register of the SPI hardware of stm32, if I remember correctly. You can click into the library function to see the specific implementation. Also, remember to read the "How to use this driver" in the library function. The attachment is the user manual of the F4 series and F1 series hal library of the HAL library.

STM23F1XXX--HAL库使用手册.pdf (3.88 MB, downloads: 11, 售价: 1 分芯积分)

STM23F4XX--HAL固件库驱动详解.pdf (4.48 MB, downloads: 11, 售价: 1 分芯积分)

Studying_sss · Published on 2017-12-28 16:24

huaiqiao posted on 2017-12-27 16:45 MPU9250 definitely has registers. Needless to say, when you operate it, you will definitely operate its registers. This is inevitable. Also, through spi ...

OK, thank you

在学习的路上 · Published on 2017-12-30 13:06

I wish the host a happy holiday, and a new year with a new look, everything goes well, and there will be no more problems, haha

Studying_sss · Published on 2017-12-30 21:33

Posted on the road of learning on 2017-12-30 13:06 I wish the host a happy holiday, and a new year with a new atmosphere, everything goes well, and there will be no more troubles, haha

, thank you, and I wish you a happy new year too!

dbwu8280

Good stuff! Thank you!

supermiao123

I wish you a happy holiday and a new year.

How to use SPI to obtain data from MPU9250 through the HAL library? [Copy link]

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