i.MX Processors中的主题 Android/Communicating with M4

Android/Communicating with M4

koodain_pekka — Wed, 22 Apr 2015 09:42:13 GMT

Hi All,

I'm trying to get started with communication with M4 using mcc in Android environment but have hit a wall. I've managed to get ping_pong example working with yocto build but for some reason M4 is not getting anything when I'm trying to replicate the same demo using Android. I have changed TARGET_BOARD_DTS_CONFIG in BoardConfig.mk and enabled config flags for mcc tests.

Any pointers what I am doing wrong or what should I be trying next?

Thanks!

Re: Android/Communicating with M4

alejandrolozan1 — Mon, 27 Apr 2015 17:19:42 GMT

Hi,

I have not tried that out, but which kernel are you using? the one generated on Android build or the the generated by Yocto?

Best Regards,

Alejandro

Re: Android/Communicating with M4

koodain_pekka — Mon, 27 Apr 2015 18:11:35 GMT

Hi,

I'm using the one generated on Android build.

BR, Pekka

Re: Android/Communicating with M4

alejandrolozan1 — Mon, 27 Apr 2015 20:15:23 GMT

I know there might be a few differences and tweaks you need to perform to the Android kernel. But it is worth trying with the kernel generated by Yocto, that way we can narrow down the possible problem and find the differences.

/Alejandro

Re: Android/Communicating with M4

koodain_pekka — Tue, 28 Apr 2015 10:35:50 GMT

It will be probably faster if you could help me with the steps on how to try yocto kernel with Android.. Thanks!

Re: Android/Communicating with M4

alejandrolozan1 — Tue, 28 Apr 2015 16:18:46 GMT

Hi,

I can try it out, but this will take me a few days, depending on the workload.

/Alejandro

Re: Android/Communicating with M4

koodain_pekka — Wed, 29 Apr 2015 06:54:03 GMT

I tried by building imx_3.10.53_1.1.0_ga branch from linux-2.6-imx with android_v7_defconfig and created a boot.img. It booted successfully and now the M4 side probably sees the messages from A9. Problem is that it's all messy and setting 'uart_from_osc' doesn't help at all. But there's something happening at least..

BR, Pekka

Re: Android/Communicating with M4

koodain_pekka — Mon, 01 Jun 2015 06:19:44 GMT

Hi Alejandro,

Any updates on this - did you manage to find any time to check it out?

BR, Pekka