Is it not official support Linux Distribution for using RS232C?

Legato Linux distribution (Yocto project)
1

Hi,
I’m using R13.3( SWI9X07Y_02.28.03.05 ).
I checked the following topics about UART1(RS232C) on WP76XX.

I understood “Custom Linux Distribution can be built through Yocto by customers”.
Why is it not official support Linux Distribution for using RS232C by Sierra.

If possible, I want to get a official support Yocto project for using RS232C because I want to clarify the scope of software guarantee.

BR,
Tanoue

2

About this topic, please discuss with Sierra FAE directly.

3

Hi, Tanoue-san, jyijyi

Make sense, I request to SFDC to create new Yocto distribution that is supported to control UART1 officially.

4

Hi, HIROKI-san, jyijyi,

Thank you for repry and action to solve my question.
I will wait for the answer.

5

Hi Tanoue-san,
As I talked your colleague, your requests are follows.

  1. Supports ioctl() to monitor 8 uart pins.
    We already requested R&D team but it is difficult to meet your schedule so,
    we will keep in touch this request.

  2. Official supports for current work around that is provided in the forum.
    I. Sierra continue to supports the customer who is using customized Yocto by Sierra including newer Yocto version.
    => As we discussed, we can continue to support them

II. How can we manage Yocto version separately from original Sierra Yocto ?
=>When we build new Linux image, Yocto version will be changed like follows.

＜Original R13.3＞
ati8
Legato Ver: 19.02.0_4cb954265427b8c2c668a010ff5be274
Yocto Ver: SWI9X07Y_02.28.03.05 2019-07-08_12:55:31
OS Ver: Linux version 3.18.131 (oe-user@oe-host) (gcc version 7.3.0 (GCC) ) #1 PREEMPT Mon Jul 8 12:20:50 UTC 2019
LK Ver: SWI9X07Y_02.28.03.05
RootFS Ver: SWI9X07Y_02.28.03.05 2019-07-08_12:55:31
UserFS Ver: unknown
MCU Ver: unknown

OK

＜Customized R13.3 that is attached in this comment＞
ati8
Legato Ver: 19.02.0_4cb954265427b8c2c668a010ff5be274
Yocto Ver: SWI9X07Y_02.28.03.05 2020-01-08_07:15:53
OS Ver: Linux version 3.18.131 (oe-user@oe-host) (gcc version 7.3.0 (GCC) ) #1 PREEMPT Wed Jan 8 06:57:36 UTC 2020
LK Ver: SWI9X07Y_02.28.03.05
RootFS Ver: SWI9X07Y_02.28.03.05 2020-01-08_07:15:53
UserFS Ver: unknown
MCU Ver: unknown

OK

You and we can recognized Yocto version by ”Yocto Ver: SWI9X07Y_02.28.03.05 2020-01-08_07:15:53”.

Thank you.

–TAK

6

Hi @tanoue

Sorry for missing attached file.
I made download link to get as follows.

https://sierrawireless.my.salesforce.com/sfc/p/41000002GOqp/a/1M000000U1i7/.A2tmkE8iDFRywtWtltmfJkCglll_mBMdgn92hgMuQU

7

Hi goto-san,

Thank you for answering my problem.
I could check RS232C pin were controlled by my application on the provided Yocto image.

Then, I have two additional question.

Is controlling RS232C the only difference between the provided Yocto image(Customized R13.3) and a Yocto image(Original R13.3) ?
In other words, I think the difference is that a image includes the customized “gpiolib-sysfs.c” or not.

Is the provided URL always accessible?
I am worried about the URL downs and I need a workaround to get it.

9

Hi @tanoue

＞In other words, I think the difference is that a image includes the customized “gpiolib-sysfs.c” or not.

Yes , the different is only including gpiolib-sysfs.c.
gpiolib-sysfs.c (36.9 KB)

Is the provided URL always accessible?
I am worried about the URL downs and I need a workaround to get it.

Yes, this is accessible.
If you have some worried, please discuss with your distributor to manage images.

Thank you.
–TAK