Bob Jeffway / Mbed 2 deprecated MCP4822_Sinewave

First Shot at Sin wav from DAC

Dependencies:   MCP4822A mbed

Fork of MCP4822_demo by Steven Beard

main.cpp

Committer:
bjeffway
Date:
2016-04-01
Revision:
2:e8d2b1992e9f
Parent:
1:77d25d0f67d6

File content as of revision 2:e8d2b1992e9f:

// 2.9Khz

#include "mbed.h"
#include "MCP4822A.h"


PinName cspins[] = {(D9)};
MCP4822A MCP(1, D11, D13, cspins, D10);    // NDACs, MOSI, SCLK, nCS-list, nLdac

int main() {
    int i;

//    printf("\r\n\r\nSetting SPI clock frequency to 10 MHz.\r\n");
//    MCP.frequency(10000000);
    printf("\r\n\r\nSetting SPI clock frequency to 20 MHz.\r\n");
    MCP.frequency(20000000);
    
    // Begin by setting all the DACs to 1000 millivolts at gain 2.
    printf("Loading all channels with 1000mV at gain 2...\r\n");
    MCP.latch_disable();

        MCP.writeA2(0, 2520);
        MCP.writeB2(0, 2520);

    wait(4);
    printf("Latching now.\n");
    MCP.latch_enable();
    wait(4);



    while (1) {
for (float i = 0; i < 6.28; i=i+.1)  {
        MCP.writeA2(0, 1500+sin(i)*1500);
}

    }
}