46 SandSim
46 : SandSim
- Author: Alden Grover
- Description: Physics engine that simulates falling sand on a 2d plane
- GitHub repository
- Open in 3D viewer
- Open in VGA Playground
- Clock: 25175000 Hz
How it works
This projects works in a 36x48 grid, where each grid has a binary state of either filled or empty. The physics engine iterates through the rows of sand and a compute kernel calculates the next state for each pair of continuous rows.
How to test
This project can be tested by attaching the TinyVGA PMOD board to the UO port (and a connected VGA monitor), and the TinyQSPI PMOD board to the UIO port. Then, by driving any of the UI pins high, a single grain of sand will be generated in the top line.
External hardware
1x TinyVGA 1x TinyQSPI
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Add sand | VGA_R1 | QSPI_FLASH_CSB |
| 1 | Add sand | VGA_G1 | QSPI_SD0 |
| 2 | Add sand | VGA_B1 | QSPI_SD1 |
| 3 | Add sand | VGA_vsync | QSPI_SCK |
| 4 | Add sand | VGA_R0 | QSPI_SD2 |
| 5 | Add sand | VGA_G0 | QSPI_SD3 |
| 6 | Add sand | VGA_B0 | QSPI_RAM_CS1 |
| 7 | Add sand | VGA_hsync | QSPI_RAM_CS2 |