PSoC™ 4 Forum Discussions

Hi,

I am working on a color LED controller, and want the user to be able to upload their own programs over a USB-UART link.  Does anyone have any examples of this for PSOC?  What are the best methods to do this?  Just stream the data and look for terminating characters?

Thank you,

Tom

I'm using a PSOC CY8C4248AZI-L485 and trying to implement the USBUART but no matter what I do, I can't get it to recognize the device in Windows.

I started with the sample USBUART project, and made very few changes beyond stripping out some #ifdef code that wasn't executing, and adding a red and green status LED.  

The 4248 is running at 3.3V, and I'm self-powering it from an external source.  The 5V from the USB is applied to the VBUS, and I've tried all combinations of VBUS monitoring both on and off.  I've tried swapping D+/D- and it made no difference.  The D lines were initially passed through series resistors, but I've since eliminated them.  There is no other filtering or static protection on the current prototype.

Whenever I plug it in, I get an error message in Windows (10) that the Device Descriptor Request Failed.  It usually recognizes that I did plug something in to the USB port, but I will add that especially early on during the dev cycle, it wouldn't always attempt to load drivers.  Somewhere along the way it's gotten more responsive to that function.

I installed the .inf file that is generated as part of the projct (I had to boot into the recovery mode to allow Windows to install an unsigned driver).  That made no difference.

I had also installed some generic Cypress USB driver that I found during my travels, but that hasn't seemed to make any difference either.

Attached is the project as it stands today, as well as a screenshot of the error message that I'm seeing in Device Manager.  

I'm new to the USB device development, so I'm not really sure what else might be useful to others to troubleshoot.  It seems like I'm just one little step away from getting this going though.

Zack

I am completely new to this platform. I have a PSoC 4200 BLE CY8C4247LQ. I am not sure this is the right forum.

I need to read an analog pin to get the voltage read by a sensor I conected. It is an IR sensor (TCST 2103), I want to get the voltage the sensor is reading but I haven't found an easy way to do it. I don't know how to use the SAR ADC  since in my PSoC Creator there is just a "Sequencing SAR ADC" with multiple inputs I don't understand.

Can you please give me some ideas about how to connect it and how to read after that? I thought it would be as easy as a digital pin. Or if I need an external circuit to modify the signal before reading it.

Hi,

I am using PSoC4100M for a project. I have two SCB components. One configured as I2C master and the other as UART. The I2C and UART pins are routed to different ports. I2C on port 1 and UART on port4. 

When I compile the project I get CyDsFit Error which says 

"E2809: Unable to find a valid placement for pins and fixed-function blocks. See the Digital Placement's Detailed placement messages section in the report file for details"

and gives the following suggestion

The placer is not able to place all of the carry chains without backtracking. It fills one UDB bank to 15/16 and the other to 7/8 and cannot place the final 2-datapath chain. As a workaround, add a control file to the TopDesign component (in Workspace Explorer's Components tab) with the following lines: ATTRIBUTE placement_force OF \Timer_ADPActiveTime:TimerUDB:sT16:timerdp:u0\ : LABEL IS "U(2,0)"; ATTRIBUTE placement_force OF \Timer_OutputPeriod:TimerUDB:sT24:timerdp:u0\ : LABEL IS "U(3,1)"; ATTRIBUTE placement_force OF \Timer_OutputActiveTime:TimerUDB:sT24:timerdp:u0\ : LABEL IS "U(0,1)"; This will fill the datapaths in the second UDB bank and allow the placer to assign the remaining datapaths.

I added the above lines to the control file. But it still gives the same error. 

Please find attached the project bundle.

Best Regards,

-arp

Hi:

    I want to use the PSoC4 EZI2C Slave block.

I also study the example "SCB_EzI2cCommSlave", but I can't find where i can get the sub-address from master.

In this demo project, it is said that the read base address is 0x03, but I can't find where it is set?

For example:

The master want to read data from sub-address"0x01"-"0x05", how can I set the slave?

Best regards

thanks a lot.