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test00
Fork of test01 by
main.cpp@1:c5360811157c, 2016-11-02 (annotated)
- Committer:
- xWhitfordx
- Date:
- Wed Nov 02 17:56:38 2016 +0000
- Revision:
- 1:c5360811157c
- Parent:
- 0:77006df50c28
- Child:
- 2:76f0ff8c3068
Sq wave success
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
xWhitfordx | 0:77006df50c28 | 1 | #include "mbed.h" |
xWhitfordx | 0:77006df50c28 | 2 | #include "mcp4725.h" |
xWhitfordx | 0:77006df50c28 | 3 | |
xWhitfordx | 0:77006df50c28 | 4 | /** |
xWhitfordx | 0:77006df50c28 | 5 | * A test program for the MCP4725 DAC Library. This Test Application requires the following: |
xWhitfordx | 0:77006df50c28 | 6 | * * An MCP4725 connected to the I2C bus of the mbed LPC1768. |
xWhitfordx | 0:77006df50c28 | 7 | * * The analog out of the MCP1768 connected to Pin15 (analog in) of the mbed LPC1768. |
xWhitfordx | 0:77006df50c28 | 8 | * |
xWhitfordx | 0:77006df50c28 | 9 | * |
xWhitfordx | 0:77006df50c28 | 10 | * This is a stripped down version of the MCP4725_Library_Test found online, and should make the necessary commands more clear. |
xWhitfordx | 0:77006df50c28 | 11 | * Last Edited: 12/24/13, Tim Brubaker |
xWhitfordx | 0:77006df50c28 | 12 | * |
xWhitfordx | 0:77006df50c28 | 13 | */ |
xWhitfordx | 0:77006df50c28 | 14 | |
xWhitfordx | 0:77006df50c28 | 15 | DigitalOut testLed(LED1); |
xWhitfordx | 0:77006df50c28 | 16 | Serial pc(USBTX, USBRX); |
xWhitfordx | 0:77006df50c28 | 17 | AnalogIn analogIn(p15); |
xWhitfordx | 0:77006df50c28 | 18 | |
xWhitfordx | 0:77006df50c28 | 19 | // Class instantiation (similar to Serial pc(USBTX, USBRX) in function) |
xWhitfordx | 0:77006df50c28 | 20 | MCP4725 bacon(p9, p10, MCP4725::Fast400kHz, 0); |
xWhitfordx | 0:77006df50c28 | 21 | |
xWhitfordx | 0:77006df50c28 | 22 | |
xWhitfordx | 0:77006df50c28 | 23 | int main() |
xWhitfordx | 0:77006df50c28 | 24 | { |
xWhitfordx | 0:77006df50c28 | 25 | // Print to terminal |
xWhitfordx | 0:77006df50c28 | 26 | pc.printf("Ready.......FIGHT!\r\n"); |
xWhitfordx | 1:c5360811157c | 27 | double freqf; |
xWhitfordx | 1:c5360811157c | 28 | // if statement |
xWhitfordx | 1:c5360811157c | 29 | //freqf = 0.5; |
xWhitfordx | 1:c5360811157c | 30 | freqf = 0.05; |
xWhitfordx | 1:c5360811157c | 31 | |
xWhitfordx | 1:c5360811157c | 32 | |
xWhitfordx | 1:c5360811157c | 33 | |
xWhitfordx | 1:c5360811157c | 34 | |
xWhitfordx | 0:77006df50c28 | 35 | |
xWhitfordx | 0:77006df50c28 | 36 | while(1) { |
xWhitfordx | 1:c5360811157c | 37 | |
xWhitfordx | 0:77006df50c28 | 38 | testLed = 1; |
xWhitfordx | 1:c5360811157c | 39 | wait(freqf); |
xWhitfordx | 0:77006df50c28 | 40 | // Write to DAC register (not EEPROM). Documentation in library files. |
xWhitfordx | 1:c5360811157c | 41 | bacon.write(MCP4725::Normal, (0xFFF * (1.0/3.32) ), false); |
xWhitfordx | 0:77006df50c28 | 42 | testLed = 0; |
xWhitfordx | 1:c5360811157c | 43 | pc.printf("Value is %f V \r\n",analogIn.read()*3.3); |
xWhitfordx | 1:c5360811157c | 44 | wait(freqf); |
xWhitfordx | 1:c5360811157c | 45 | bacon.write(MCP4725::Normal, (0x000 * (1.0/3.3) ), false); |
xWhitfordx | 1:c5360811157c | 46 | |
xWhitfordx | 0:77006df50c28 | 47 | // Print ADC measurement to terminal. Scale factor of 3.3 needed for internal ADC. |
xWhitfordx | 0:77006df50c28 | 48 | pc.printf("Value is %f V \r\n",analogIn.read()*3.3); |
xWhitfordx | 0:77006df50c28 | 49 | } |
xWhitfordx | 0:77006df50c28 | 50 | } |