====== Raspberry Pi & Infrared Proximity Sensor ======

Work in progress

===== General =====

==== Components ====

  *[[composants:2Y0A21|Sharp 2Y0A21F Infrared sensor]]
  *[[composants:mcp3008|MCP3008 ADC]]
  *Raspberry Pi - any model
  *Breadboard, jumpers, etc.

==== Wiring ====

{{composants:sharp_mcp_wiring.png?400}}

<WRAP 50%>
|^  RPi Pin #^   ^Role  ^  MCP3008 Pin #^  ^Role  |
|  1|    |3.3V|  16|  |VDD  |
|  1|    |3.3V  |  15|  |VREF  |
|  6|    |GND  |  14|  |AGND  |
|  19|    |GPIO 10 (MOSI)  |  11|  |DIN  |
|  21|    |GPIO 9 (MISO)  |  12|  |DOUT  |
|  23|    |GPIO 11 (SLCK)  |  13|  |CLK  |
|  24|    |GPIO 8 (CE0)  |  10|  |CS/SHDN  |
|  6|    |GND  |  9|  |DGND  |
</WRAP>

There are two different wirings, this one is for hardware SPI. Another one is used for software SPI

{{composants:mcp3008pin.jpg?250}}

===== Steps =====

  *Installed raspbian
  *Activated SPI in raspi-config
  *wired a MCP3008 and a sharp IR module to the GPIO pins
  *followed tuto on python but did not get data from module (read 0.00)
  *rewired to software SPI (needs documenting)
  *installed rust in tty with lightdm stopped
<code bash>
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
</code>
  *reboot to activate rust
  *
===== Ressources =====

  *[[https://tutorials-raspberrypi.com/infrared-distance-measurement-with-the-raspberry-pi-sharp-gp2y0a02yk0f/|Blog post Tutorial]]