PSoC™ 5, 3 & 1 Forum Discussions

Hello !! Thanx everyone to solve my previous query so quickly.. 🙂

i am facing a simple problem that i have made my sub modules of voltage measurment, voltage averager, probe logic and frequency measurment individually and everything is working fine !! But when i combine them all in main module using switch case, the frequency measurment part doesn't work.. any idea why it is creating such problems ?? i have attached my code along with my post..

Hello !! I have made a simple demo project of voltage measurment upto 5 volts in psoc.. it is working fine upto 2.49 volts.. but when i increase the voltage level greater then that voltage goes in negative values..

that means for 0 < Voltage < 2.499 volts, it displays proper values on lcd.. but for 2.5 volts it shows -2.5 volts and starts gradually decreasing as i increase voltage further.. for 5 volts it shows exact 0 on lcd..

so i made simple conversion logic to add simple 5 volts for values in between 2.5 to 5 volts to display it properly on lcd..

i am using psoc dev kit on 5 volts.. why i am facing that problem any guess ??

i have attached the peoject along this post..

  PSoC3/PSoC5 device has  multiple sources which can reset the device.

I need to use two comparators with hysteresis and a digital analog converter but I can only analog blocks using a comparator with hysteresis, a PGA and ADC

I'm having touble establishing a UCB communication with the PSoC5 on the starter kit. Some background, I have already:

    
• Downloaded Cypress Suite USB 3.4.6
    
• Read http://www.cypress.com/?app=forum&id=2233&rID=45003 and connect to r22/r23 as instructed (and thereby voided my warranty ;^)
    
• Built the USB firmware in the USB suite (USBFS_Bulk_Wraparound-000) for the PSoC5 and programmed the First Touch hardware.
   

When I plug my jerry-rigged USB device into my PC, Windows informs that  "One of the USB devives attached to this computer has malfunctioned." I was hoping for a simple "not recognized" but got a "malfunctioned" (!).

Damn the torpedoes full steam ahead, I have modified CYUSB.inf multitple different ways in multiple different places. I've placed it in .../Driver/bin/wxp/x86 and /x64 since I am on Win7. The driver declines to load.

Looking thru device manager, I find an unknown USB device with a matching Device Class GUID but no VID/PID when I was expecting 0x04B4/0x8051. I think the enumeration process failed pretty badly. I don't blame the driver for not loading.

I attached a scope to D+/D- and found pretty reasonable look behavior. D+ is pulled high and D- is pulled low (I believe, identifying it as USB-FS). I see a number of transaction flit by on the scope. The signals appear differntial and at rational voltage levels (0V/3.3V). The pulse widths in the transactions are consistent with 12MHz operation (integer mulitples of 83nsec).

I cannot identify a fault in the hardware or firmware and yet can't attach the USB device....help?

-bill

P.S. Who thought the best (and only) way to display information from the First Touch Kit was "the wave"? My arm is tired damn it.

I had a FirstTouch starter kit, CY8CKIT-014.  I like to use the USB port to send ADC data back to PC.

According the schematics there are two pairs of SWD signals, one wired to USB D+/D- pins, and the other to regular SWD pins.  What is the default setting of this board?  Is there a way allowing me to use SWD for programing and free the USB pins for my application?

Could I use DMA for read a 16 bit data from a master SPI and transfer the data on two 8 bit control registers?
Since the SPI works at very low frequency (1MHz), I need to update both registers only at the end of the reading procedure.
It is enough only one DMA channel or the procedure requires two different transfers ( SPI->RAM, RAM->control register), thus two DMA channels?

Thanks in advance