Using EMIF expansion port as digital output

David Valencia October 27, 20107 comments Coded in C for the TI C67x
/*      David Valencia at DSPRelated.com

        This example shows how to use the External Memory Interface
        expansion port of Spectrum Digital DSK6713 card as
        a set of digital imputs
        The use of buffer ICs is mandatory, as these pins can't deliver
        too much current        */

#define OUTPUT 0xA0000000  // EMIF ADDRESS (updated 3/11/2010)

int *output = (int*)OUTPUT; // Declare a pointer to EMIF's address

void main()
        // To see how the value is written to the EMIF pins,
        // you may prefer to run the program step-by-step

        // Write a 32-bit digital value to the pins
        *output = 0x48120A00; // Test value