Playing with Zynq Serial 19——[ex02] A happy running water lamp based on Zynq PL

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Playing with Zynq Serial 19——[ex02] A happy running water lamp based on Zynq PL [Copy link]

1. Function Overview

Zstar 's Zynq PL is connected to 3 LED indicators. As shown in the figure, the 3 LED indicators are connected in series with a 510 ohm current limiting resistor at the positive pole, and then connected to a 3.3V voltage, and the negative pole at the other end is connected to the IO of the PL . By controlling the IO of the PL to output a high or low level, the LED can be turned on or off.

The function of this example is relatively simple. Through the timer inside the FPGA , each LED is cycled to light up , achieving the effect of a running light. As shown in the figure, there are 3 LED indicators. We assign values to them in turn. Only one LED is lit at a time, and the time for lighting a certain LED each time is fixed (fixed delay). The 3 LEDs are lit up in turn, and the cycle can achieve the effect of a running light.

As shown in the figure, there is a row of LED indicators at the lower left side of the Zstar board. From left to right , the 4th , 5th and 6th LED indicators are D3 , D2 and D1 respectively .

2. Board-level debugging

Refer to the document "Playing with Zynq- Environment: XilinxPlatformCableUSB Downloader User Guide" to burn the zstar.bit file in the ...\project\zstar_ex02\zstar.runs\impl_1 path into Zynq .

You can see that the three LEDs D1 , D2 and D3 are lighting up continuously in a cycle.

This content is originally created by EEWORLD forum user ove . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

led2015

It would be great if every experiment could be explained in terms of hardware rather than in terms of literature. That’s why I prefer DIY.

qwqwqw2088

FPGA should be more efficient for lighting