mbed_example / Mbed OS SPI_HelloWorld

SPI Hello World

Fork of SPI_HelloWorld_Mbed by Mbed

Note

You will need to redefine the SPI pins to match the pins on your board to run this example. The pin mapping can be found on the board's Platform page.

API

API reference

Import librarymbed

No documentation found.

main.cpp

Committer:
mbed_official
Date:
2013-02-12
Revision:
0:466ad3f38b6b
Child:
2:34bd7b8d30f9

File content as of revision 0:466ad3f38b6b:

#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;
}