Difference between revisions of "SPI connector pinout"
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== Connecting the |
== Connecting the BitWizard boards to an Arduino == |
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Revision as of 14:57, 6 April 2012
For the interconnect between the SPI masters and the SPI expansion boards BitWizard uses a 6-pin SPI cable.
The pinout is the same (or very similar) to the pinout of the 6-pin ICSP programming connector that lots of AVR boards have.
| pin | function | remark |
|---|---|---|
| 1 | MISO | Master In Slave Out |
| 2 | VCC | power |
| 3 | SCK | Shift Clock |
| 4 | MOSI | Master Out Slave In. |
| 5 | SS | Slave Select |
| 6 | GND | Ground 0V |
The connector is laid out as follows:
| 1 | 2 |
| 3 | 4 |
| 5 | 6 |
The board usually has pin 1 and six marked.
Connecting the BitWizard boards to an Arduino
| pin | function | arduino pin |
|---|---|---|
| 1 | MISO | 12 |
| 2 | VCC | 5V |
| 3 | SCK | 13 |
| 4 | MOSI | 11 |
| 5 | SS | 10 |
| 6 | GND | Gnd |
You could use other pins, but then you have to make a software SPI implementation. This is not too difficult, but might be neccesary if something else is already on the SPI pins. On the other hand, you might be able to still use the hardware SPI module by just moving the "SS" pin somewhere else.