Secure AuthenticationのトピックRe: A71CH Could not establish communication protocol

A71CH Could not establish communication protocol

chengxuan — Tue, 03 Mar 2020 07:41:09 GMT

Hello,

My device USES IMX6ULL to connect to the A71CH.Run ~ / axHostSw/hostLib/embSeEngine/a71chDemo/scripts/a71chPrepareEcc sh, appear the error, the LOG is as follows：

A71CH Key provisioning script (Rev.0.9).
Executing this script will create new keys and insert these keys
in the attached A71CH secure element.
Are you sure? [y/N] y
Continuing
GNU/Linux
Assume we run on Linux
>> openssl ecparam -name prime256v1 -out ../ecc/prime256v1.pem

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_kp_0.pem

>> openssl ec -in ../ecc/ecc_key_kp_0.pem -pubout -out ../ecc/ecc_key_kp_pubonly_0.pem
read EC key
writing EC key

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_kp_1.pem

>> openssl ec -in ../ecc/ecc_key_kp_1.pem -pubout -out ../ecc/ecc_key_kp_pubonly_1.pem
read EC key
writing EC key

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_kp_2.pem

>> openssl ec -in ../ecc/ecc_key_kp_2.pem -pubout -out ../ecc/ecc_key_kp_pubonly_2.pem
read EC key
writing EC key

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_kp_3.pem

>> openssl ec -in ../ecc/ecc_key_kp_3.pem -pubout -out ../ecc/ecc_key_kp_pubonly_3.pem
read EC key
writing EC key

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_pub_0.pem

>> openssl ec -in ../ecc/ecc_key_pub_0.pem -pubout -out ../ecc/ecc_key_pub_pubonly_0.pem
read EC key
writing EC key

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_pub_1.pem

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/ecc_key_pub_2.pem

>> openssl ecparam -in ../ecc/prime256v1.pem -genkey -noout -out ../ecc/remote_ecc_kp.pem

>> ../../../../linux/a71chConfig_i2c_imx debug reset
a71chConfig (Rev 1.20) .. connect to A71CH. Chunksize at link layer = 256.
I2CInit: opening /dev/i2c-1
I2C driver: PEC flag cleared
I2C driver supports plain i2c-level commands.
I2C driver supports Read Block.
Error: Failed to retrieve ready status.
sci2c_Init failed 2
SM_Connect failed with status 0x7013 (Could not establish communication protocol)

==========SELECT-FAILED=========
Select failed. SW = 0x0005
"../../../../linux/a71chConfig_i2c_imx debug reset" failed to run successfully, returned 12

Cloud you help me？

Re: A71CH Could not establish communication protocol

Kan_Li — Wed, 04 Mar 2020 07:18:25 GMT

Hi Cheng,

Are you using the kit of OM3710/A71CHARD with MCIMX6UL-EVKB? Please kindly clarify. Thanks for your patience!

Have a great day,
Kan

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Re: A71CH Could not establish communication protocol

chengxuan — Wed, 04 Mar 2020 09:00:46 GMT

Hi Kan：

Thank you for your reply.

I don't use OM3710/A71CHARD with MCIMX6UL-EVKB. My device base on imx6ull-14x14-evk and A71CH connect to imx6ull via I2C4(ENET2_TX_DATA0 and ENET2_RX_EN).

And,I have configure I2C4 in the device tree.like following:

And then,I change the axHost/hostlib/platform/imx/i2c_a7.c line 39 "/dev/i2c-1" to "/dev/i2c-3". Run buildA71CH.sh all and put into my device.

I2C init will be failed, when I run axHostSw/linux/A71CH_i2c_imx, like the following:

So,I don't know why I2C failed to initialize. Is there an error in my device tree configuration？Where can I find any I2C example in device tree of imx6ull?

Re: A71CH Could not establish communication protocol

chengxuan — Thu, 05 Mar 2020 03:34:34 GMT

Hi，

It works now,thank you for you help.

Re: A71CH Could not establish communication protocol

Kan_Li — Thu, 05 Mar 2020 07:13:27 GMT

That is great! Thanks for the update!

Best Regards,

Kan

Re: A71CH Could not establish communication protocol

nd88 — Tue, 15 Jun 2021 08:39:42 GMT

how did you solve this issue?