USB superspeed peripherals Forum Discussions

Hi,

I have been able to set up the Master FIFO example like in the AN87216 app note after modifying the usb descriptors. This solves my bulk transfer needs.

However, I want to be able to pass and read short control signals to a FPGA. What would be the best way to do this?

I believe the example code only uses two of the 4 threads you can have active. So, I made a project similar to the example but with two more endpoints to use as message in and out, without modifying the state machine yet.  I am able to see the 4 endpoints in the control center. But when I try to test if the original endpoint channels work, I am able to transfer data out, but my data in transfer times out (error 997). Any idea on why this is happening.

Please email me and I will provide my current firmware files.

Regards,

Camilo

Hi,

In the CX3 Denebola Eval board, how to work with registers in I2C instead of using API?  For scanning the I2C bus, we need to iterate from 0x00 to 0x7F to understand how much the slave device is connected. Is it possible we can try simple code? 

1. CyU3PI2cWaitForAck(API -waits for an ACK handshake from the slave) receiving CY_U3P_SUCCESS status for NAK devices too.  my code will be : 

CyU3PReturnStatus_t MyI2C_SensorWrite(uint8_t slaveAddress, uint16_t count, uint8_t *buf)
{
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
CyU3PI2cPreamble_t preamble;

preamble.buffer[0] = slaveAddress;
preamble.length = 1;
preamble.ctrlMask = 0x0000;

status = CyU3PI2cTransmitBytes (&preamble, buf , count ,0);
CyU3PThreadSleep(1);

if (status == CY_U3P_SUCCESS)
{
CyU3PDebugPrint(4,"\r\n buff=0x%x");
// break;
}

status = CyU3PI2cWaitForAck(&preamble, 200); //waiting for slaveAddress ack
if (status == CY_U3P_SUCCESS)
{
CyU3PDebugPrint(4,"\r\n ack");
}

return status;
}

Hi, 

My UVC video reference is running at 640x480 30fps. In this case, within my understanding the bitrate is calculated as below.

640 x 480 x 16(2bytes per pixel) x 30(fps) = 147,456,000 bps = 147.456Mbps

Then, what is the maximum bitrate of isochronous endpoint running on usb2.0/3.0? It would be great if I can have a simple formula like the above.

Regards,

Rossi

Hi infineon team,

I tried to use GPIO[32]/PMODE[2] pin as simple GPIO after the boot sequence in FX3 . but i am getting setsimpleconfig failed error code=0x44. I searched in the community by using below link and found that this issue is solved by some patch file. kindly provide us the same patch file.

community link:GPIO[32:30]: After boot-up, these signals can be u... - Infineon Developer Community

Note : Im using 1.3.1 SDK for this project. but in 1.3.4 also we are facing this issue.provide patch file for 1.3.1 SDK.

Thanks and regards,

Rakesh

@AliAsgar @Rashi_Vatsa @JayakrishnaT_76 

need help on FX3 firmware side & computer sw example 

I am attempting to make a FX3 firmware which extracts UVC data from a FIFO populated by an FPGA, attaches UVC headers and then sends the packets to the USB host however my video data is not being consistently sent to the host. Looking at the USB bus in Wireshark I can see 1 or 2 full packets of UVC data are sent to the host but after that the FX3 seems to ignore requests from the host for more data and I am not sure why. The packets that are sent are full, so they should not be marked as EOF and I can verify that by looking at the packet's headers in Wireshark. Additionally, the FPGA is constantly outputting data to the FIFO therefore the FIFO should have data and the FX3 should be able to fill its buffers with that information and invoke the callback functions. Since the sending of the UVC data handled by a callback function, I don't think the issue is a failing API call which results in an endless loop but I cannot verify this. I am basing my firmware off the AN75779 and USBVideoClassBulk example firmwares and I am following the same setup and logic for sending UVC packets to the host. The descriptors only allow for 1080p60 and the parameter negotiation with the host seems to complete successfully.

I have included my firmware as well as 2 different Wireshark captures showing 1 and 2 packets being sent. Help diagnosing why my firmware is hanging would be appreciated. Unfortunately I do not have access to the debug logs despite them being activated in the firmware.

hello guys,

I am new to famous cypress usb peripheral products. Now, I need to connect a FPGA to industial control board, which runs Windows Linux or Android with USB3.0 interface. 

The requirement is to send FPGA raw data to control board at a speed as high as possible. 

After using product selection guide, it seem that both SX3 and FX3 could meet my design, both of them has GPIF interface. 

I am confused on the main difference between SX3 and FX3 product. It seems tha FX3 has more GPIO, and more general fit to FPGA design. I wonder if there's some function difference between them.

Which is best for my design requirement? 

Thanks,

Jeff