Part Number: MSP-EXP432P401R
Hi,
So I suspect the answer is no, but I haven't found any documentation telling me otherwise, so I figured I'd ask here.
I'm using my MSP432P401R to sample a bunch of analog channels. Everything is working great.
So here's the issue, after a certain number of samples are taken, I want to stop the conversion, reconfigure the ADCBuf to only sample one specific pin, then start a new conversion.
Here's the sequence of events:
1 - ADCBuf_init is called once.
2 - ADCBuf main thread starts
3 - ADCBuf_Params_init is called and all parameters set.
4 - ADCBuf_Conversion structure parameters are set.
5 - ADCBuf_open is called and buffer opens successfully.
6 - ADCBuf_convert is called and conversion begins.
So up to this point, everything is great, and the conversion chugs along until I reach a certain number of samples.
7 - ADCBuf_convertCancel is called with the (valid) handle from ADCBuf_open.
8 - ADCBuf_close is called with the (valid) handle from ADCBuf_open.
So here everything has stopped, the ADC is no longer sampling and no conversion is happening.
So now what I want to do is this:
9 - Change the ADCBuf_Params and ADCBuf_Conversion settings.
10 - ADCBuf_open is called with the new ADC_Params, but this time it returns NULL.
This is where I'm stuck. I was hoping that after closing the previous handle, that I could reconfigure the ADCBuf and open a new handle, but the call to ADCBuf_open always fails.
I tried called ADCBuf_init again, but there was no difference, and I know that ADCBuf_init should only be called once anyways, so I think that's a dead end.
So is this possible? Can I configure the ADCBuf and do some conversions, then stop everything, release the ADCBuf and reconfigure it? Is there a step I'm missing?
A yes or no answer would be sufficient, I just want to make sure I'm not spinning my wheels trying to do something impossible.
Thanks!