Mbed
SPI Hello World
Dependencies: mbed
Fork of
SPI_HelloWorld_Mbed
by 
mbed official
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;
+}
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