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Proposal for SPI being part of the grove spec #30

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19 changes: 18 additions & 1 deletion docs/Grove_System.md
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Expand Up @@ -177,6 +177,23 @@ The Grove I2C connector has the standard layout. Pin 1 is the SCL signal and P
|pin3 | VCC | Power for Grove Module, 5V/3.3V|
|pin4 | GND | Ground |

### Grove SPI

The Grove SPI connector has the standard layout that uses two grove wires. For the first wire Pin 1 is the SCK signal and Pin 2 is the MISO signal. For the second wire Pin 1 is the MOSI signal and Pin 2 is the SS signal. Power and Ground are the same as the other connectors.

|pin|Function | Note |
|--------|------|-----|
|pin1 | SCK | Master Clock |
|pin2 | MISO| Master in Slave out|
|pin3 | VCC | Power for Grove Module, 5V/3.3V|
|pin4 | GND | Ground |

|pin|Function | Note |
|--------|------|-----|
|pin1 | MOSI | Master out Slave in |
|pin2 | SS | Slave Select |
|pin3 | VCC | Power for Grove Module, 5V/3.3V|
|pin4 | GND | Ground |

## Grove Cables

Expand Down Expand Up @@ -359,4 +376,4 @@ Want some Grove modules for your project? Here are some recommend.
|[More Details](http://www.seeedstudio.com/Grove-Line-Finder-p-825.html)|[More Details](http://www.seeedstudio.com/Grove-Ultrasonic-Ranger-p-960.html)|[More Details](http://www.seeedstudio.com/Grove-80cm-Infrared-Proximity-Sensor-p-788.html)|

## Tech Support
Please submit any technical issue into our [forum](http://forum.seeedstudio.com/). <br /><p style="text-align:center"><a href="https://www.seeedstudio.com/act-4.html?utm_source=wiki&utm_medium=wikibanner&utm_campaign=newproducts" target="_blank"><img src="https://github.com/SeeedDocument/Wiki_Banner/raw/master/new_product.jpg" /></a></p>
Please submit any technical issue into our [forum](http://forum.seeedstudio.com/). <br /><p style="text-align:center"><a href="https://www.seeedstudio.com/act-4.html?utm_source=wiki&utm_medium=wikibanner&utm_campaign=newproducts" target="_blank"><img src="https://github.com/SeeedDocument/Wiki_Banner/raw/master/new_product.jpg" /></a></p>