PSoC™ 4 Forum Discussions

I have an ADC SAR with two analog inputs:

1. A slowly varying signal (its basically a 50Hz AC voltage that is always present on the relevant input) that I sample and calculate the RMS value for once every 10 seconds or so
2. A rapid, randomly appearing impulse signal (its a voltage spike of around 5-20usec in duration) that I want to capture using the Limit Detect feature for that channel

What I want to be able to do is capture Signal 2 if/when it occurs, whilst still being able to measure Signal 1 at the defined periods I want to.  The problem I appear to be having is that I have my ADC free-running to pick up Signal 2, but this is generating an endless series of EOS interrupts, which is causing my processor to go into a WDT reset as the code is just continuously servicing my ISR.

So, what I think I need to be able to do is disable EOS interrupts, but allow Limit Detect interrupts.  But, my questions are:

1. Is it possible to selectively disable particular ADC SAR interrupts from running my ISR?
2. If I do disable EOS interrupts, how will this impact my ability to undertake measurements of Signal 1?  I'm using the command: ADC_1_IsEndConversion(ADC_1_WAIT_FOR_RESULT);

to take samples of Signal 1, and from the looks of the function block for this, its relying on the EOS bit in the ADC SAR interrupt register to get set in order for it to work.

Thanks for your help

Cheers,

Mike

Hi,

     I am using Windows 10 (32 bit) and Windows 7 (64 bit) with different laptops. I bought CYALKIT-E02 Solar Powered BLE Sensor Beacon. I installed your Cypress BLE Beacon App in both the laptops. When i try to open the BLE beacon PC app, it is showing ERROR "The program can't start because MSVCP140.dll is missing from your computer. Try reinstalling the program to fix this problem" in the windows 7 PC. But the PC with windows 10 OS, app is not opening and error message is also not showing. Can you please help me on this problem?

Thank you.

Good afternoon to whomever may be reading this, thank you for your time

I'm currently developing a sensor with a PRoCBLE chip (CYBL10162-56LQXI), and I require an SPI communication between the PRoC chip and a BME280 sensor. It's 4-cable SPI.

My problem is that the sensor requires me to read several bytes in a row without rising the CSB (SS0) signal. I've found that, in the SCB block configured as SPI Master (the way I want it) in PSoC Creator 4.2, there is an option for "Transfer separation", which is apparently what I want. The thing is that the documentation is lacking in this regard and I can't find exactly how it works, whether it only works for read+write or only for writing...

This picture schematically represents what I want to do with a multiple-byte read: 1st, it lowers CSB (SS), then PSoC sends through MOSI a byte commanding to read a specific register, then reads a byte, and then reads another one without changing the CSB (SS) signal at all until the end of the reading. Is this possible to do with the PSoC functions as they are, or will I have to bitbang the CSB (SS) signal? Is the "Transfer separation" option just what I need, or does it only work for writing?

Thank you in advance

Gabriel