Four Squared
/
SinWave
test00
Fork of test01 by
main.cpp
- Committer:
- zzl5143
- Date:
- 2016-11-09
- Revision:
- 2:76f0ff8c3068
- Parent:
- 1:c5360811157c
File content as of revision 2:76f0ff8c3068:
#include "mbed.h" #include "mcp4725.h" /** * A test program for the MCP4725 DAC Library. This Test Application requires the following: * * An MCP4725 connected to the I2C bus of the mbed LPC1768. * * The analog out of the MCP1768 connected to Pin15 (analog in) of the mbed LPC1768. * * * This is a stripped down version of the MCP4725_Library_Test found online, and should make the necessary commands more clear. * Last Edited: 12/24/13, Tim Brubaker * */ DigitalOut testLed(LED1); Serial pc(USBTX, USBRX); AnalogIn analogIn(p15); // Class instantiation (similar to Serial pc(USBTX, USBRX) in function) MCP4725 bacon(p9, p10, MCP4725::Fast400kHz, 0); int main() { // Print to terminal pc.printf("Ready.......FIGHT!\r\n"); double freqf; double buffer [100]; int cut = 0; // if statement //freqf = 0.5; freqf = 0.05; while( cut < 100){ buffer[ cut ] = sin( 2 * 3.1415926 * cut / 100); cut++; } while(1) { /* testLed = 1; wait(freqf); // Write to DAC register (not EEPROM). Documentation in library files. bacon.write(MCP4725::Normal, (0xFFF * (1.0/3.32) ), false); testLed = 0; pc.printf("Value is %f V \r\n",analogIn.read()*3.3); wait(freqf); bacon.write(MCP4725::Normal, (0x000 * (1.0/3.3) ), false); */ testLed = 1; if ( cut == 100) { cut = 0; } bacon.write(MCP4725::Normal, (buffer[cut] * 0xFFF * (1.0/3.32) ), false); cut++; wait(freqf/100); // Print ADC measurement to terminal. Scale factor of 3.3 needed for internal ADC. pc.printf("Value is %f V \r\n",analogIn.read()*3.3); } }