ADC Start of Conversion on External GPIO

Sandip Rakhasiya

Intellectual 340 points

Hello Sir,

I have to start conversion of ADC by GPIO.

So I have used ADCEXTTRIG but no result.

So Can You help me how to do ADC SOC from GPIO.

over 10 years ago

0 Gautam Iyer over 10 years ago

Guru 192875 points

Hi Sandip,

Which mcu are you using? By going through your activity list, is it still F28M35?

Regards,
Gautam

0 Sandip Rakhasiya over 10 years ago in reply to Gautam Iyer

Intellectual 340 points

Yes, Its F28M35H52C1.

0 Gautam Iyer over 10 years ago in reply to Sandip Rakhasiya

Guru 192875 points

Sandip, if you check this trigsel table:

You need to configure TRIGxSEL as 4.

Regards,

Gautam

0 Sandip Rakhasiya over 10 years ago in reply to Gautam Iyer

Intellectual 340 points

Yes Sir,

I have read all in tech Manual reference and configured for TRIGxSEL as 4.
Now One thing is that. Can I configured any GPIO as SOC trigger or Only GPIO32/GPIO33(Dedicated).

Thank You

0 Gautam Iyer over 10 years ago in reply to Sandip Rakhasiya

Guru 192875 points

From GPIO0 to GPIO63.

0 Subrahmanya over 10 years ago in reply to Gautam Iyer

TI__Mastermind 24095 points

Hi,

You can use ADCEXTTRIG or this purpose.

Please refer to -
www.ti.com/.../spruh22g.pdf

Table 11-2. TRIGxSEL Trigger Options
Option "00100" ADCEXTTRIG

Also GPIO pin selection for the same can be done from GPTRIP2SEL reg.

GPTRIP2 (TZ2n, ADCEXTTRIG) Input Select: Register (GPIO0 - GPIO63)

-Bharathi

C2000™︎ microcontrollers

C2000 microcontrollers forum

ADC Start of Conversion on External GPIO