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Renesas RX231, RX62N, RX631, RX24T, RX64M, RX71M, RX65N, RX66T, RX72N Ray tracer sample

Japanese

  • Raytracer 320x240, for RX65N Envision kit/RX72N Envision kit
  • Raytracer 480x272 for RX65N Envision kit
    ※Rendering from a previous version (slightly faster due to optimization in the latest code) RX65N

Overview

Ray tracing rendering program using RX microcontroller

Project list

  • main.cpp
  • raytracer.hpp
  • RX62N/Makefile
  • RX631/Makefile
  • RX24T/Makefile
  • RX26T/Makefile
  • RX64M/Makefile
  • RX71M/Makefile
  • RX65N/Makefile
  • RX66T/Makefile
  • RX72T/Makefile
  • RX72N/Makefile

Hardware preparation (general)

  • If the base crystal is different, change the typedef parameter.
  • Makefile declares the set frequency for each module.
  • RX231: 54MHz (12MHz)
  • RX62N: 96MHz (12MHz)
  • RX631: 96MHz (12MHz)
  • RX24T: 80MHz (10MHz)
  • RX64M: 120MHz (12MHz)
  • RX71M: 240MHz (12MHz)
  • RX65N: 120MHz (12MHz)
  • RX66T: 160MHz (10MHz)
  • RX72T: 192MHz (16MHz)
  • RX72N: 240MHz (16MHz)
  • Connect the indicator LED to the specified port.
  • Connect the USB serial signal and the SCI1 (RX24T, RX66T, RX64M, RX71M) port of the setting.
  • RX65N Envision kit uses the attached LCD (480x272).
  • RX24T, RX66T, RX72T are 8-bit connection (R61505W LCD Controller)
  • RX64M, RX71M are 16-bit connection (R61505W LCD Controller)
  • Refer to "main.cpp" for the connection port with the R61505W LCD.
  • RX72N Envision kit uses the attached LCD (480x272).

Prepare hardware resources (optional)

  • Connect a USB serial converter to the port specified in SCI.
  • Connect the RXD terminal on the microcontroller side and the TXD of USB serial.
  • Connect the TXD terminal on the microcontroller side and the RXD of USB serial.
  • In the RX72N Envision Kit, the CN8 connector is a USB serial connection.

Build method

  • Move to each platform directory and make.
  • Write the raytracer_sample.mot file to the microcontroller.

Action

  • Draw with raytracing at 320x240 resolution (if you have drawing hardware).
  • Render time displayed on LCD and console (milliseconds)
  • LED flashes at 0.25 second intervals.
  • TX (send) and RX (receive) are performed on the port specified in SCI.
  • Check with TeraTerm.
  • TeraTerm serial settings: 115200 baud, 8-bit data, 1 stop, no parity.
  • In RX65N/RX72N Envision kit, press SW2 on the back side to change the number of samplings and resolution.

Remarks

  • The process of sending font drawing to the LCD by the port bus is quite large.
  • In the original code, the rendering time is displayed on the LCD for each line, but it is commented out.

Rendering time 320x240, sampling number: 1

Microcontroller Core FPU fsqrt Frequency [MHz] Drawing method Time [ms]
RX231 RXv2 O O 54 8 bits, port-bus 1736
RX62N RXv1 O X 96 8 bits, port-bus 1860
RX631 RXv1 O X 96 8 bits, port-bus 1868
RX24T RXv2 O O 80 8 bits, port-bus 1224
RX26T RXv3 O O 120 8 bits, port-bus 692
RX65N RXv2 O O 120 Frame Memory 784
RX64M RXv2 O O 120 16 bits, port-bus 751
RX66T RXv3 O O 160 8 bits, port-bus 602
RX72T RXv3 O O 192 8 bits, port-bus 464
RX71M RXv2 O O 240 16 bits, port-bus 439
RX72N RXv3 O O 240 Frame Memory 361

License

Reference (Ray Tracer): http://www.cs.cmu.edu/~ph/

Other: MIT