Difference between revisions of "Dragino SPI"
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The Dragino MS12 has a SPI interface from Ar2317 which is already used for the Serial Flash. We use the GPIOs to simulate a second SPI interface and communicate with other SPI devices. | The Dragino MS12 has a SPI interface from Ar2317 which is already used for the Serial Flash. We use the GPIOs to simulate a second SPI interface and communicate with other SPI devices. | ||
| − | The GPIO defination while | + | The GPIO defination while simulated as SPI interface: |
GPIO0 <---> Reset | GPIO0 <---> Reset | ||
GPIO1 <---> MOSI | GPIO1 <---> MOSI | ||
Revision as of 03:35, 19 September 2011
Introduction
The Dragino MS12 has a SPI interface from Ar2317 which is already used for the Serial Flash. We use the GPIOs to simulate a second SPI interface and communicate with other SPI devices.
The GPIO defination while simulated as SPI interface: GPIO0 <---> Reset GPIO1 <---> MOSI GPIO2 <---> MISO GPIO3 <---> SCK
Send message to Arduino via SPI
example codes are available for download in http://www.dragino.com/downloads/examples/spi_incoming/
