![](/media/cache/group/Mbed-100-mk2_WXmQNC1.png.50x50_q85.png)
SPI Hello World
Dependencies: mbed
Fork of SPI_HelloWorld_Mbed by
Diff: main.cpp
- Revision:
- 0:466ad3f38b6b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Feb 12 17:25:49 2013 +0000 @@ -0,0 +1,27 @@ +#include "mbed.h" + +SPI spi(p5, p6, p7); // mosi, miso, sclk +DigitalOut cs(p8); + +int main() { + // Chip must be deselected + cs = 1; + + // Setup the spi for 8 bit data, high steady state clock, + // second edge capture, with a 1MHz clock rate + spi.format(8,3); + spi.frequency(1000000); + + // Select the device by seting chip select low + cs = 0; + + // Send 0x8f, the command to read the WHOAMI register + spi.write(0x8F); + + // Send a dummy byte to receive the contents of the WHOAMI register + int whoami = spi.write(0x00); + printf("WHOAMI register = 0x%X\n", whoami); + + // Deselect the device + cs = 1; +} \ No newline at end of file