SK-AM62: I2C Relevent

Hello Veerapandiyan,

Thanks for your query.

Before proceeding ahead, I would need to know few things.

What is the SOC Initialization procedure you are going ahead with, is it SBL NULL, SD CARD Boot, DFU Boot or something else.

Regards,

Vaibhav

Hi Vaibhav,

I am using OSPI boot Mode.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

Thanks for your response.

Expect responses within a day.

Regards,

Vaibhav

Hi Vaibhav,

Ok. I still Wait.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

As mentioned by you earlier that MCU_I2C0 is working fine, so did you try choosing the I2C0,I2C1,I2C2,I2C3 in the SysConfig Tool ?

Regards,

Vaibhav

Hi Vaibhav,

I connect 3 I2C module one I2C module is connected to MCU_I2C0. Another two Module is there which I2C pin connect tell me. I check all I2C is not working only working MCU_I2C0.

Regards,

Veerapandiyan V.

Hello Veerapandiyan,

I am going to check this on my end, and update you within few hours.

Best Regards,

Vaibhav

Hello Veerapandiyan,

Just a heads up, can you please refer the Schematics and check as to if these pins are sort of up for interfacing.

Regards,

Vaibhav

Hello Veerapandiyan,

UPDATE

Just to add to the above response.

I have checked all the I2Cx pins in the schematics and datasheet, but then I am seeing that most of them are not available as pins on the board.

Soldiering has to be done in order to access them. For example I see that I2C3_SCL is GPIO1_22(this is pin 15 on J3 User Expansion Connector) which is cool. But then I also see that I2C3_SDA is GPIO1_23(this is one of reset buttons on the board).

Regards,

Vaibhav

Hi Vaibhav,

How to use i2c pins, possible or not possible, tell  single word.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

veerapandiyan v said:

Regards,

Could you tell me which document you are looking at here.

Also, is Linux using the I2C modules? Can you check that in the dts file?

Moreover, if you want to know the physical pins you can interface on our SK-AM62, they would be purely MCU_I2C0 and SOC_I2C0, rest of them I am seeing needs soldiering.

Waiting for your response.

Best Regards,

Vaibhav

Hi Vaibhav,

I referred this link: https://www.ti.com/lit/ug/spruj40c/spruj40c.pdf?ts=1697429145792&ref_url=https%253A%252F%252Fwww.google.com%252F please check and tell mee

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

I have gone through the link you shared. Basically you were referring to the AM62x EVM User Guide.

Also, I am going to point out where you can find all the I2C pins on the SK-AM62 board:

You can refer the above table for I2C Connections.

Regards,

Vaibhav

Hi Vaibhav,

Ok. I still Wait. MCU I2C0 is working fine code is there but I2C1-I2C3 is not working how to fix tell me.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

If you look at the table above, you can find that the MAIN_I2C1 is available to be configured.

Can you please refer to the assembly file for AM62x ? That way you can easily locate where the pins TP72 and TP71 are.

Both of them must be left untouched, so you can sort of use VIA pins and subsequently use jumper cables to use MAIN_I2C1 for your application.

Please check the attachment below as well.

Regards,

Vaibhav

Hi Vaibhav,

I don't understood.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

Apologies for delayed responses due to TI India holiday.

I just checked with hardware experts internally. 

I would recommend to only use MCU_I2C0, MAIN_I2C0 and MAIN_I2C2. The pins for the same can be found from the table here:

Vaibhav Kumar said:

I2C Pin	Serial Data(SDA)	Serial Clock(SCL)
MCU_I2C0	MCU Header(J9) - 21	MCU Header(J9) - 24
MAIN_I2C0	User Expansion Connector(J3) - 28 PRU Header(J10) - 8 OLDI Display Interface(J21) - 3	User Expansion Connector(J3) - 27 PRU Header(J10) - 6 OLDI Display Interface(J21) - 2
MAIN_I2C1	TP72 40 Pin Test Automation Header(J23) - 38	TP71 40 Pin Test Automation Header(J23) - 36
MAIN_I2C2	R30 User Expansion Connector(J3) - 3	R31 User Expansion Connector(J3) - 5
MAIN_I2C3	Programming Header(J22) - 3	Programming Header(J22) - 1
WKUP_I2C0	I2C Controlled LED Driver (2 U38)	I2C Controlled LED Driver (15 U38)

Regards,

Vaibhav

ARM Based Processors | FAQ AM62x & AM62A | FAQ AM64x

Hi Vaibhav,

Any update.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

I think you missed my above reply.

Vaibhav Kumar said:

I would recommend to only use MCU_I2C0, MAIN_I2C0 and MAIN_I2C2. The pins for the same can be found from the table here:

I believe I have mentioned here the pins recommended to use on SK-AM62.

Regards,

Vaibhav

ARM Based Processors | FAQ AM62x & AM62A | FAQ AM64x

Hi Vaibhav,

I understood. I want main I2C0 and I2C2 code.

Thanks Regards,

Veerapandiyan V.

Hello Veerapandiyan,

MAIN_I2C0 code/explanation I have given here and how to configure it. https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1271326/sk-am62-spi-communication/4894809#4894809

Please check this, meanwhile I am going to check for MAIN_I2C2.

Regards,

Vaibhav

ARM Based Processors | FAQ AM62x & AM62A | FAQ AM64x