ECE 5760: Final Projects

Cricket 2007 Auto Batter

An FPGA-powered AI to play Cricket 2007

Matthew Filipek ( )

Syed Tahmid Mahbub ( )

Manish Patel ( )


We created an auto-batter on the DE1-SOC that would play a cricket simulation game, cricket 07. The game is run on a PC, with the VGA output routed to the FPGA, which performs image processing on the incoming frames, and sends key commands back to the PC. The FPGA AI is capable of soundly defeating the game’s built-in AI.

Figure 1. Video


As mentioned previously in the report, not everything was perfect (though we were still able to beat the game when playing at four star difficulty). One strange error was that we could not get the FPGA to correctly decide between multiple shots correctly. We thoroughly tested this version, and found that the FPGA sent the correct SPI signals, but the PIC32 either did not decode them correctly or they were sent too late for some reason (even though the time at which they are sent never changed in our modifications). Thus, we decided on just using a single shot for each batter type (left or right handed). Another interesting error is that for the chosen left handed shot, which should only drive the shift, s, and left keys on the keyboard, also drives the up key as well (this isn’t a problem, since it is still a valid shot, and quite a good one in many scenarios). A guess as to why this occurs is that when wiring up the keyboard, we accidentally shorted the up and left traces in the keyboard dot matrix, causing them to be driven together. We checked if this were the case, and while it seems to not be the issue, we can’t think of anything else that would cause this, since SPI was verified to be working correctly.

Another interesting piece of information is that we burned out several GPIO pin on the FPGA. Originally, we had used all the pins on the board for the ADC’s and external SRAM, but since we were not using the SRAM we decided to use the LSB data line from each SRAM for SPI. Unfortunately, we forgot to disable the SRAM before doing this and burned out a GPIO. Lesson learned – add a 200 ohm resistor on the pin next time.