GPIO writing (SmartRF05 battery board , cc2530)

John78

Other Parts Discussed in Thread: CC2530

I am working on a task to write logical values on the GPIO pins of SmartRF05 battery board for the cc2530 EM and read them using an oscilloscope.
After having a look on the datasheet I noticed that I can use the probe connectors P4 and P5 for this purpose. By the way

P5SEL &= ~0x00; /* Set as GPIO */
P5DIR &= ~0x00; /* Set as Output */

returns an error as the P5SEL is undefined. Do you know any example code to perform this task?

Thank you

over 9 years ago

0 YiKai Chen over 9 years ago

Guru 735705 points

There is no P5SEL and P5DIR registers for CC2530. What you say P4 and P5 on SmartRF05BB should be mapped to specific pins of CC2530. You should check that first.

0 John78 over 9 years ago in reply to YiKai Chen

Prodigy 80 points

Thank you for your reply. So I will use:

- PxSEL, with x=0-2 to configure each pin as a GPIO
- PxDIR, with x=0-2 to be each port pin to be either an input or an output (in my case an output)

Then for example, I would like to set EM_P2_20 as an ouput. EM_P2_20 corresponds to the pin 19 in P4 on the battery board. How could I map this value on the register?
Is there any documentation can I read or code examples?

Thank you

0 YiKai Chen over 9 years ago in reply to John78

Guru 735705 points

You can refer to schematics in www.ti.com/.../swru208b.pdf and EM_P2_20 doesn't map to any pin of CC2530.

0 John78 over 9 years ago in reply to YiKai Chen

Prodigy 80 points

Thank you for your reply.

So for example I want to set pin 12 of P5, header B I/O , of the battery board as an output. I checked the schematic to see that pin #12 of P5 --> EM_P1_11--> P0.0

So I should configure the register as P0SEL = 0x00 ; to set the pin as GPIO

While for the direction: P0DIR = 0x00 as an input and what about the output?

Thanks

0 YiKai Chen over 9 years ago in reply to John78

Guru 735705 points

I had replied you in your another post.

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GPIO writing (SmartRF05 battery board , cc2530)