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Bharani_B_Intel
Employee
1,208 Views

Enabling ADC on arduino101 for Zephyr OS

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Hi,

I need to run an ADC application on Arduino101, for Zephyr OS. I need the Kconfig configuration to add in prj.conf file to enable ADC driver.

We need to build two applications for for Arduino101 to run zephyr. one for x86-processor, 2nd for sensor core

According to the Supported Features in the zephyr documentation

Link: https://www.zephyrproject.org/doc/boards/x86/arduino_101/doc/board.html https://www.zephyrproject.org/doc/boards/x86/arduino_101/doc/board.html

ADC is connected to sensor core (32 MHz Argonaut RISC Core (ARC)* EM processor), so in the application that goes onto ARC core I have enabled ADC

 

using CONFIG_ADC=y.

Board hangs during boot time and I do not have any logs to trace the issue. I need a correct combination of KConfig configurations for X86-core and

 

Sensor-core so that ADC is up and running on Arduino-101
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1 Solution
Bharani_B_Intel
Employee
143 Views

Hi Andres,

I seem to have solved the problem , I followed steps mentioned in the Link below.

I think my issue was better applicable the Zephyr forum.

ADC was not running because of SDK used for Zephyr.

Link: https://jira.zephyrproject.org/browse/ZEP-1882 https://jira.zephyrproject.org/browse/ZEP-1882

Thanks,

Bharani

View solution in original post

6 Replies
idata
Community Manager
143 Views

Hello Bharani,

Thank you for interest in the Intel® Curie™ Boards.

I understand you are trying to build two applications, one of them for the ARC processor.

The ADC driver is, as you mentioned, only functional for the ARC processor.

From what I read, you have already developed the two applications, one of them with the CONFIG_ADC=y command. What is not clear to me is if both applications worked accordingly before adding the ADC enabling command.

Are you willing to share more information about your project and what you are trying to achieve?

Could you please share a little bit more about the steps that you followed during the Kernel Configuration process?

Are you in any way creating a custom build or performing a kernel modification?

I'll be waiting for your response.

Regards,

 

Andres V.
Bharani_B_Intel
Employee
143 Views

Hi Andres,

Both applications worked properly before adding the CONFIG_ADC=y.

The applications are nothing but a basic Hello world application.

Application for X86:

printk("Hello from x86 app %s\n", CONFIG_ARCH);

Application for Sensor core:

k_sleep(1000);

printk("Hello from sensor core %s\n", CONFIG_ARCH);

prj_x86.conf:

CONFIG_PRINTK=y

CONFIG_ARC_INIT=y

CONFIG_SYS_LOG_ARC_INIT_LEVEL=4

prj_arc.conf:

# I tried 4 different configurations for arc

1) # Nothing in the configuration

Board successfully booted and was able to see both the printk's

Arduino console:

***** BOOTING ZEPHYR OS v1.7.99 - BUILD: Mar 8 2017 06:56:01 ***** 

Hello from x86 app x86

 

Hello from sensor core arc

2) Zephyr did not boot with this config option - ADC Enabled

CONFIG_ADC=y

3) Zephyr did not boot with following configuration also

CONFIG_PRINTK=y

CONFIG_STDOUT_CONSOLE=y

CONFIG_SERIAL=n

CONFIG_ADC=y

4) Zephyr did not boot with following configuration also

CONFIG_PRINTK=y

CONFIG_STDOUT_CONSOLE=y

CONFIG_SERIAL=y

CONFIG_ADC=y

Before enabling the ADC, the application has worked perfectly.

Thanks,

Bharani

Bharani_B_Intel
Employee
143 Views

I am trying to run Zephyr Operating system on Arduino-101.

As part of some experiment I want ADC to be enabled so that I can use Analog input pins and read some data from it.

Zephyr is a tiny OS that is highly configurable Linux kernel with put a file system.

Also I need some more details about SPI clock scaling factor or clock frequency configuration options so that I can run SPI communication between a slave and Arduino.

idata
Community Manager
143 Views

Hello Bharani,

 

 

Thank you for the information provided.

 

 

I'll be needing more time to perform the corresponding test and come up with information that you may find useful.

 

 

Thank you for your patience.

 

 

Regards,

 

Andres V.
Bharani_B_Intel
Employee
144 Views

Hi Andres,

I seem to have solved the problem , I followed steps mentioned in the Link below.

I think my issue was better applicable the Zephyr forum.

ADC was not running because of SDK used for Zephyr.

Link: https://jira.zephyrproject.org/browse/ZEP-1882 https://jira.zephyrproject.org/browse/ZEP-1882

Thanks,

Bharani

View solution in original post

idata
Community Manager
143 Views

Hello Bharani,

 

 

I'm glad to hear that you could solve the issue.

 

 

Thank you for sharing your experience with the community, we really appreciate it.

 

 

Have a nice day.

 

 

Regards,

 

Andres V.
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