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SPI Hello World
Dependencies: mbed
Fork of SPI_HelloWorld_Mbed by
Revision 0:466ad3f38b6b, committed 2013-02-12
- Comitter:
- mbed_official
- Date:
- Tue Feb 12 17:25:49 2013 +0000
- Commit message:
- SPI Hello World
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /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
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Feb 12 17:25:49 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/0954ebd79f59 \ No newline at end of file