topic Re: how to use SPI function with KEA8 in Kinetis Microcontrollers

how to use SPI function with KEA8

steetven_er45yer — Thu, 12 Aug 2021 15:02:42 GMT

hi,

I try to use S9KEAZN8AMTG to control a driver IC with SPI in interrupt-driven mode, and set S9KEAZN8AMTG in master mode. i try to read "KEA8 Sub-Family Reference Manual" ,and to find a way to control SPI wire, But I have no idea how to start. if you can give me a sample program.

thanks

Re: how to use SPI function with KEA8

Robin_Shen — Fri, 13 Aug 2021 00:17:23 GMT

Hi steetven,

You can find examples in Quick Start Package for the FRDM-KEAZ evaluation board(FRDM-KEA-QSP). Please open these examples by using S32 Design Studio for Arm 2018.R1 – Windows/Linux

Best Regards,
Robin
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Re: how to use SPI function with KEA8

steetven_er45yer — Mon, 13 Sep 2021 07:06:39 GMT

Hi，Robin_shen

i use PB4 as MISO. When I download the program to the MCU, it can work normally. But after re-power on, MISO no longer receives external changes. Then I transplanted the MISO function to PB3, and the function was normal after power on. Can you help me analyze where the problem is with the configuration?

This is my configuration about SPI

Re: how to use SPI function with KEA8

Robin_Shen — Mon, 13 Sep 2021 07:20:10 GMT

Hi steetven,

The PTB4 pin defaults to the NMI_b function.
Driving the NMI signal low forces a non-maskable interrupt, if the NMI function is selected on the corresponding pin.
It is not recommended to use this pin for other functions.

If you must use this pin, you need to configure SIM_SOPT[NMIE].

Best Regards,
Robin
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Re: how to use SPI function with KEA8

steetven_er45yer — Mon, 13 Sep 2021 08:45:29 GMT

hi，

Attached is the code I am debugging, please help to check it. In addition, I don’t want to make this code public, can you help me set it as non-public

Re: how to use SPI function with KEA8

steetven_er45yer — Mon, 13 Sep 2021 08:10:01 GMT

Thank you for your reply, wait for me to try to modify it and tell you result