Car stereo control using TDA7419 for input select, audio control. Adafruit 96x64 monochrome 0.96" display to show the audio selections four buttons to control selections. Next steps: take input from the car steering wheel controls!
Dependencies: Adafruit_GFX PinDetect_KL25Z PreampTDA7419 mbed
main.cpp
- Committer:
- danielashercohen
- Date:
- 2014-10-20
- Revision:
- 3:8d3cc3488cd8
- Parent:
- 2:2b0cf4d80668
- Child:
- 4:46da1eff72bf
File content as of revision 3:8d3cc3488cd8:
#include "mbed.h" #include "PinDetect.h" #include "Adafruit_SSD1306.h" #include "PreampTDA7419.h" #define NUM_OPTIONS 12 // how many different options does the stereo have? char option; PinDetect PinUp ( PTA1 ); PinDetect PinLeft ( PTD4 ); PinDetect PinRight ( PTA2 ); PinDetect PinDown ( PTA12 ); class SPI2 : public SPI { public: SPI2(PinName mosi, PinName miso, PinName clk) : SPI(mosi,miso,clk) { format(8,3); frequency(2000000); }; }; SPI2 gSpi(PTD2,NC,PTD1); Adafruit_SSD1306 display (gSpi, PTD0, PTD5, PTA13); // SPI obect, DC, RST, CS PreampTDA7419 Preamp (PTE0, PTE1); void testfillrect(void) { uint8_t color = 1; for (int16_t i=0; i<display.height()/2; i+=3) { // alternate colors wait(0.05); display.fillRect(i, i, display.width()-i*2, display.height()-i*2, color%2); display.display(); color++; } } void displayWrite(char firstLine[], int value) { display.clearDisplay(); display.setCursor(0,0); display.setTextSize(2); display.printf("%s\r\n", firstLine); display.setCursor(0,30); display.setTextSize(5); display.printf(" %d\r\n", value); display.display(); } ///////////////////////////////////////////// // Helper functions for the serial display // ///////////////////////////////////////////// void processButtonPress (int button) { if (button == 0) { if (option < (NUM_OPTIONS-1)) { option++; } else { option = 0; } } if (button == 1) { if (option > 0) { option--; } else { option = (NUM_OPTIONS-1); } } switch (option) { case (0): // if volume option is selected change volume when button 1 and 2 are pressed if (button == 2) { Preamp.decreaseVolume(); } if (button == 3) { Preamp.increaseVolume(); } displayWrite("Volume", Preamp.readVolume() ); break; case (1): // manage the input - 1,2,3 are the standard single ended inputs int input = Preamp.readInput(); if (button == 2) { input--; } if (button == 3) { input++; } Preamp.setInput(input); displayWrite("Input", Preamp.readInput() ); break; case (2): // manage the treble value if (button == 2) { Preamp.decreaseTreble(); } if (button == 3) { Preamp.increaseTreble(); } displayWrite("Treble", Preamp.readTreble()); break; case (3): // manage the middle value displayWrite("Middle", 42); break; } } /* case (3): // manage the middle value if (button == 2) { if (middle > -5) { middle--; } } if (button == 3) { if (middle < 5) { middle++; } } displayWrite("Middle", middle ); break; case (4): // manage the bass value if (button == 2) { if (bass > -5) { bass--; } } if (button == 3) { if (bass < 5) { bass++; } } displayWrite("Bass", bass ); break; // Manage the attenuators case (5): // manage the atten_lf value if (button == 2) { if (atten_lf > 0) { atten_lf--; } } if (button == 3) { if (atten_lf < 11) { atten_lf++; } } displayWrite("LF", atten_lf ); break; case (6): // manage the atten_rf value if (button == 2) { if (atten_rf > 0) { atten_rf--; } } if (button == 3) { if (atten_rf < 11) { atten_rf++; } } displayWrite("RF", atten_rf ); break; case (7): // manage the atten_lr value if (button == 2) { if (atten_lr > 0) { atten_lr--; } } if (button == 3) { if (atten_lr < 11) { atten_lr++; } } displayWrite("LR", atten_lr ); break; case (8): // manage the atten_rr value if (button == 2) { if (atten_rr > 0) { atten_rr--; } } if (button == 3) { if (atten_rr < 11) { atten_rr++; } } displayWrite("RR", atten_rr ); break; case (9): // manage the atten_mix value if (button == 2) { if (atten_mix > 0) { atten_mix--; } } if (button == 3) { if (atten_mix < 11) { atten_mix++; } } displayWrite("Mix", atten_mix ); break; case (10): // manage the atten_sub value if (button == 2) { if (atten_sub > 0) { atten_sub--; } } if (button == 3) { if (atten_sub < 11) { atten_sub++; } } displayWrite("SUB", atten_sub ); break; case (11): // manage the atten_sub value if (button == 2) { mix = 0; } if (button == 3) { mix = 1; } displayWrite("Mix", mix ); break; } } */ void UpPressed( void ) { processButtonPress(0); } void LeftPressed( void ) { processButtonPress(2); } void RightPressed( void ) { processButtonPress(3); } void DownPressed( void ) { processButtonPress(1); } int main() { PinUp .mode( PullUp ); PinLeft .mode( PullUp ); PinRight.mode( PullUp ); PinDown .mode( PullUp ); PinUp .attach_asserted( &UpPressed ); PinLeft .attach_asserted( &LeftPressed ); PinRight.attach_asserted( &RightPressed ); PinDown .attach_asserted( &DownPressed ); display.clearDisplay(); // draw multiple rectangles testfillrect(); wait(0.5); display.display(); display.clearDisplay(); display.display(); // Sampling does not begin until you set a frequency. // The default is 20ms. If you want a different frequency // then pass the period in microseconds for example, for 10ms :- // pin.setSampleFrequency( 10000 ); // PinUp .setSampleFrequency(10000); // Defaults to 20ms. PinLeft .setSampleFrequency(10000); // Defaults to 20ms. PinRight.setSampleFrequency(10000); // Defaults to 20ms. PinDown .setSampleFrequency(10000); // Defaults to 20ms. // option = NUM_OPTIONS; processButtonPress(0); while (1) { wait(0.2); } } // EOF