Tagged Questions

3
votes
1answer
318 views

Multiplexing an I2C bus between two masters on a Xilinx FPGA

I have a single external I2C bus (SDA and SCL pins). This is currently controlled by a third-party IP core which provided "implicit" inout ports in the MPD, specifically: ...
1
vote
3answers
1k views

What is the I2C ACK, and how do I detect it?

I am writing an FPGA driver in Verilog for a temperature sensor (datasheet available here). The communication protocol is SMBus, a close cousin of I2C. Now reading the datasheet, I understand that the ...
3
votes
2answers
352 views

Dealing with bidirectional communication over 1 pin

I am writing a Verilog driver for a simple temperature sensor connected to an FPGA. (The temperature sensor datasheet is available here.) Communications occur over one pin, the ...
3
votes
1answer
335 views

How can I get touchscreen (HID) data into Windows 7?

We have a hardware design in progress that is taking touch screen inputs and passing them along via I2C to an FPGA. The FPGA translates the I2C data to PCIe. The PCIe passes the touchscreen data to ...