Yann Garcia
/
SignalGeneratorApp
This little program demonstrates how to use the SignalGenerator library.
main.cpp@0:481720b53aed, 2010-11-16 (annotated)
- Committer:
- Yann
- Date:
- Tue Nov 16 10:30:20 2010 +0000
- Revision:
- 0:481720b53aed
- Child:
- 1:719b21661920
V0.0.0.1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Yann | 0:481720b53aed | 1 | #include "SignalGenerator.h" |
Yann | 0:481720b53aed | 2 | |
Yann | 0:481720b53aed | 3 | Serial g_debug(USBTX, USBRX); // tx, rx |
Yann | 0:481720b53aed | 4 | |
Yann | 0:481720b53aed | 5 | /** CPU Available indicator |
Yann | 0:481720b53aed | 6 | */ |
Yann | 0:481720b53aed | 7 | DigitalOut g_availableLed(LED1); |
Yann | 0:481720b53aed | 8 | Ticker g_available; |
Yann | 0:481720b53aed | 9 | void AvailableLedIndicator(); |
Yann | 0:481720b53aed | 10 | |
Yann | 0:481720b53aed | 11 | /** Static instance of SignalGenerator |
Yann | 0:481720b53aed | 12 | */ |
Yann | 0:481720b53aed | 13 | SignalGenerator g_signal(p18); |
Yann | 0:481720b53aed | 14 | Ticker g_synchronousUserInput; |
Yann | 0:481720b53aed | 15 | void SynchronousUserInput(); |
Yann | 0:481720b53aed | 16 | SignalGenerator::SignalGeneratorType DisplaySignalGeneratorTestMenuAndGetChoice(); |
Yann | 0:481720b53aed | 17 | |
Yann | 0:481720b53aed | 18 | int main() { |
Yann | 0:481720b53aed | 19 | volatile SignalGenerator::SignalGeneratorType _choice; // User selects the desired signal type |
Yann | 0:481720b53aed | 20 | volatile int frequency; // Signal frequency |
Yann | 0:481720b53aed | 21 | |
Yann | 0:481720b53aed | 22 | wait(1); // Needed after startup |
Yann | 0:481720b53aed | 23 | |
Yann | 0:481720b53aed | 24 | // Launch available indicator |
Yann | 0:481720b53aed | 25 | g_availableLed = 1; |
Yann | 0:481720b53aed | 26 | g_available.attach(&AvailableLedIndicator, 2.0); // Never detached |
Yann | 0:481720b53aed | 27 | |
Yann | 0:481720b53aed | 28 | // Start infinite loop |
Yann | 0:481720b53aed | 29 | while(true) |
Yann | 0:481720b53aed | 30 | { |
Yann | 0:481720b53aed | 31 | // Acquire settings |
Yann | 0:481720b53aed | 32 | _choice = DisplaySignalGeneratorTestMenuAndGetChoice(); |
Yann | 0:481720b53aed | 33 | printf("\r\nEnter signal frequency (< 1MHz/# of samples): "); |
Yann | 0:481720b53aed | 34 | scanf("%d", &frequency); |
Yann | 0:481720b53aed | 35 | |
Yann | 0:481720b53aed | 36 | // Prepare the signal |
Yann | 0:481720b53aed | 37 | g_signal.SetSignalFrequency(_choice, frequency); |
Yann | 0:481720b53aed | 38 | |
Yann | 0:481720b53aed | 39 | // Launch execution |
Yann | 0:481720b53aed | 40 | if (g_signal.BeginRunAsync() == -1) { |
Yann | 0:481720b53aed | 41 | // Synchronous mode |
Yann | 0:481720b53aed | 42 | g_synchronousUserInput.attach(&SynchronousUserInput, 0.005); // 5ms |
Yann | 0:481720b53aed | 43 | g_signal.Run(); // Never stopped |
Yann | 0:481720b53aed | 44 | printf("\r\nSignal Generator terminated\r\n"); |
Yann | 0:481720b53aed | 45 | g_synchronousUserInput.detach(); |
Yann | 0:481720b53aed | 46 | } else { |
Yann | 0:481720b53aed | 47 | // Asynchronous mode |
Yann | 0:481720b53aed | 48 | printf("\r\n\r\nPress any key to terminate\r\n"); |
Yann | 0:481720b53aed | 49 | while (getchar() != 'q'); |
Yann | 0:481720b53aed | 50 | g_signal.EndRunAsync(); |
Yann | 0:481720b53aed | 51 | } |
Yann | 0:481720b53aed | 52 | } // End of 'while' statement |
Yann | 0:481720b53aed | 53 | } // End of main program |
Yann | 0:481720b53aed | 54 | |
Yann | 0:481720b53aed | 55 | void AvailableLedIndicator() { |
Yann | 0:481720b53aed | 56 | g_availableLed != g_availableLed; |
Yann | 0:481720b53aed | 57 | } // End of function AvailableLedIndicator |
Yann | 0:481720b53aed | 58 | |
Yann | 0:481720b53aed | 59 | void SynchronousUserInput() { |
Yann | 0:481720b53aed | 60 | if (g_debug.readable()) { |
Yann | 0:481720b53aed | 61 | g_signal.Stop(); |
Yann | 0:481720b53aed | 62 | getchar(); |
Yann | 0:481720b53aed | 63 | } |
Yann | 0:481720b53aed | 64 | } // End of function SynchronousUserInput |
Yann | 0:481720b53aed | 65 | |
Yann | 0:481720b53aed | 66 | SignalGenerator::SignalGeneratorType DisplaySignalGeneratorTestMenuAndGetChoice() |
Yann | 0:481720b53aed | 67 | { |
Yann | 0:481720b53aed | 68 | do { |
Yann | 0:481720b53aed | 69 | printf("\r\n\r\nTest demo v0.1 - Generate signal\r\n"); |
Yann | 0:481720b53aed | 70 | printf("\tSquareSignal:\t0\r\n"); |
Yann | 0:481720b53aed | 71 | printf("\tTriangleSignal:\t1\r\n"); |
Yann | 0:481720b53aed | 72 | printf("\tSawtoothSignal:\t2\r\n"); |
Yann | 0:481720b53aed | 73 | printf("\tReverse sawtoothSignal:\t3\r\n"); |
Yann | 0:481720b53aed | 74 | printf("\tSinusSignal:\t4\r\n"); |
Yann | 0:481720b53aed | 75 | switch (getchar()) { |
Yann | 0:481720b53aed | 76 | case '0' : |
Yann | 0:481720b53aed | 77 | return SignalGenerator::SquareSignal; |
Yann | 0:481720b53aed | 78 | case '1' : |
Yann | 0:481720b53aed | 79 | return SignalGenerator::TriangleSignal; |
Yann | 0:481720b53aed | 80 | case '2' : |
Yann | 0:481720b53aed | 81 | return SignalGenerator::SawtoothSignal; |
Yann | 0:481720b53aed | 82 | case '3' : |
Yann | 0:481720b53aed | 83 | return SignalGenerator::ReverseSawtoothSignal; |
Yann | 0:481720b53aed | 84 | case '4' : |
Yann | 0:481720b53aed | 85 | return SignalGenerator::SinusSignal; |
Yann | 0:481720b53aed | 86 | } // End of 'switch' statement |
Yann | 0:481720b53aed | 87 | } while (true); |
Yann | 0:481720b53aed | 88 | } // End of function DisplaySignalGeneratorTestMenuAndGetChoice |