AM62P: How to configure two CS pins in the spi0 group of sysconfig

WANG HUAJIE

Prodigy 150 points

Part Number: AM62P
Other Parts Discussed in Thread: SYSCONFIG,

Tool/software:

sdk：10.0.0.14 mcu：TIAM62P34(54)

SPI0_PIN:

MCU_SPI0_D0: B11

MCU_SPI0_D1: D10

MCU_SPI0_CLK: C10

MCU_SPI0_CS0: B10

mcu_spi1_cs1:F8

Hi,all：

We have configured MCSPI0 in sysconfig using the following pins: B10 C10 B11 D10； How to configure the CS pin F8 in MCSPI0 using sysconfig??

We attempted to configure MCSPI0 as a multi master by adding a CS pin in the MCSPI Channel Configuratin component. However, when selecting F8 as the CS pin, the current configuration automatically jumps to SPI1.

5 months ago

0 Vaibhav Kumar 5 months ago

TI__Mastermind 45436 points

Hi,

Please let me know if this helps: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1414084/faq-sk-am64b-mcspi-integration-guide

Regards,

Vaibhav

0 Jenney Ni 5 months ago in reply to Vaibhav Kumar

TI__Prodigy 380 points

Hi Vaibhav,

let me add some pictures as the customer cannot upload.

As you see, we configure MCSPI0 as a multi master , add two CS pins in the MCSPI Channel Configuratin component. However, we cannot select F8 as the CS pin and no other use the F8 pin.

0 Vaibhav Kumar 5 months ago in reply to Jenney Ni

TI__Mastermind 45436 points

Hi,

I got your concern.

It is about not being able to select the F8 pin.

Allow me sometime to crosscheck this with the datasheet and see where this may be used.

Regards,

Vaibhav

0 Vaibhav Kumar 5 months ago in reply to Jenney Ni

TI__Mastermind 45436 points

Hi,

Please refer this snippet from the AM62P Datasheet.

I can see that the options shown in SysConfig on your window are valid.

At my setup, I tried doing the same and I was able to use F8.

The problem is that you see F8 is tied to MCU_SPI1, more specifically MCU_SPI1_CS1.

But I see that you are choosing MCU_SPI0 as the master/controller, So you cannot have F8 which is a Chip Select of MCU_SPI1(another controller).

Hope this clarifies your doubt.

To add F8, you have to add another MCSPI Controller so new instance would be CONFIG_MCSPI1 and then under that you configure MCU_SPI1, post which you can choose F8.

So the new MCSPI tab added would like as follows:

Regards,

Vaibhav

0 Vaibhav Kumar 5 months ago in reply to Vaibhav Kumar

TI__Mastermind 45436 points

Just to summarize you cannot have the Controller set to MCU_SPI0 and configure the chip select F8 of another Controller(MCU_SPI1).

Hope this clarifies your doubt.

Closing the thread.

Regards,

Vaibhav

0 WANG HUAJIE 5 months ago in reply to Vaibhav Kumar

Prodigy 150 points

Hi,We tried this method and added (mcu_spi1) group to configure CSpin F8, but it didn't take effect;

In the end, we matched the CS pin with gpio and adopted the software chip selection to achieve it.

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AM62P: How to configure two CS pins in the spi0 group of sysconfig