Other Parts Discussed in Thread: TIDM-FRAM-IRREFLECTIONSENSING, MSP430F2121, , MSP430FR2353, MSP430FR2355
Hello,
I need to make a IR smoke measurement and choose the best hardware, because the hardware suggested in the "TIDM-FRAM-IRREFLECTIONSENSING" is not enough sensible. I have to read the IR value in two cases: when I have the IR led in On (100us pulsed) and IR led in off. These two values must be different, even if the difference is not so much. With the hardware suggested in the "TIDM-FRAM-IRREFLECTIONSENSING", this difference is very very small, and come times is zero or negative!
So, I ask if it's possible and which is the register configuration for:
1) TIA: the output connected to external pin output without any internal connection
2) SAC: input connected only to external pin. Output connected to external pin and internally to ADC input or eComp input.
Is it possible to do this? If yes, which is the right configuration?
Thank You
Federico Battaglin