Modifying SimpleBLEPeripheral for pull down instead of pull up IO's

Darren Jones1

Hi, I have used the SimpleBLEPeripheral project as a starting point for our project and our hardware has been based around the same design. The only change that was necessary is that the button IO is used with pull down instead of pull up.

I've made the change of adding P2INP |= BV(5) which switched the pull and it functions great, however the device never seems to enter Power Mode 3 any more. If I remove this pull change line, although the interrupt doesn't work it enters PM3 as it should. (We also tried modding the board to get the IO to work and it does in fact work fine and enter PM3 when off).

So my question is this, is there somewhere else in the SimpleBLEPeripheral code that would need changing to reflect the change of pull?

It's as if the code isn't sleeping because it things the IO is still being interrupted.

Thanks

over 11 years ago

0 Fredrik K over 11 years ago

TI__Guru** 106705 points

Hi Darren,

Which P0 pin are you using as button input? Are any of the other P0 pins used as outputs? What are the P0 pins connected to externally?

Cheers,

Fredrik

0 Darren Jones1 over 11 years ago in reply to Fredrik K

Intellectual 470 points

Hi Fredrik,

Thanks for the response.

We are using P0_1 as the input (using a photocell instead of a button) and have no outputs.

I know the SimpleBLEPeripheral code allows for output to LED's, but I have set HAL_LED=FALSE in the Preprocessor macros.

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Modifying SimpleBLEPeripheral for pull down instead of pull up IO's