Blackaddr Audio
2 years ago
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GitHub
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#ifndef DEBUG_PRINTF_H_ |
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#define DEBUG_PRINTF_H_ |
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// Make a safe call to Serial where it checks if the object is valid first. This allows your
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// program to work even when no USB serial is connected. Printing to the Serial object when
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// no valid connection is present will crash the CPU.
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#define DEBUG_PRINT(x) {if (Serial) {x;}} |
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#endif |
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/***********************************************************************************
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* MULTIVERSE DEMO |
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*
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* This demo program shows how to use BALibrary to access the hardware |
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* features of the Aviate Audio Multiverse effects processor. |
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*
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* The following are demonstrated in this programming using BALibrary: |
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* - WM8731 stereo audio codec in master mode (NOTE: not slave mode like TGA Pro |
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* - Interact with all physical controls |
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* - Control the 128x64 pixel OLED display (connected to SPI0) |
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* - Use the 8MB external SRAM (simple memory test) |
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*
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* REQUIREMENTS: |
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* This demo for Multiverse uses its OLED display which requires several Arduino |
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* libraries be downloaded first. The SH1106 library is modifed to work with Teensy |
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* and must be downloaded from the AlgorhythmTechnologies github. |
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*
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* Adafruit_BusIO : https://github.com/adafruit/Adafruit_BusIO
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* Adafruit_GFX_Library : https://github.com/adafruit/Adafruit-GFX-Library
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* Adafruit_SH1106 : https://github.com/AlgorhythmTechnologies/Adafruit_SH1106
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*
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*
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* USAGE INSTRUCTIONS |
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* - Use the 'Gain' knob to control the input gain on the codec. See checkPot(). |
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* - Use the 'Level' knob to control output volume with an AudioMixer4 object. |
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* - Stomp switches S1 and S2 will write status to display, and turn on LED |
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* - Encoder push-button switches will write status to display when pressed/released |
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* - Encoder rotary control will adjust a positive/negative count and update display |
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*/ |
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#include <Audio.h> |
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#include <SPI.h> |
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#include "BALibrary.h" |
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#include "DebugPrintf.h" |
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#include "PhysicalControls.h" |
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using namespace BALibrary; |
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// OLED display stuff
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#include "Adafruit_SH1106.h" |
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#include "Adafruit_GFX.h" |
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#include "Fonts/FreeSansBold9pt7b.h" |
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constexpr unsigned SCREEN_WIDTH = 128; // OLED display width, in pixels
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constexpr unsigned SCREEN_HEIGHT = 64; // OLED display height, in pixels
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Adafruit_SH1106 display(37, 35, 10); |
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// External SPI RAM
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ExternalSramManager sramManager; |
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ExtMemSlot memSlot; |
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BASpiMemory spiMem1(SpiDeviceId::SPI_DEVICE1); |
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unsigned spiAddress = 0; |
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unsigned spiAddressMax; |
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unsigned sramStage = 0; // stage 0 is zero, 1 is write, 2 is read
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volatile float sramCompletion = 0.0f; |
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volatile unsigned errorCount = 0; |
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AudioInputI2Sslave i2sIn; |
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AudioOutputI2Sslave i2sOut; |
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AudioMixer4 volumeOut; |
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// i2sIn --> volumeOut(Mixer) --> i2sOut
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AudioConnection patchIn0(i2sIn, 0, volumeOut, 0); |
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AudioConnection patchIn1(i2sIn, 1, volumeOut, 1); |
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AudioConnection patchOut0(volumeOut,0, i2sOut, 0); |
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AudioConnection patchOut1(volumeOut,0, i2sOut, 1); |
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BAAudioControlWM8731master codec; |
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elapsedMillis timer; |
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// Create a control object using the number of switches, pots, encoders and outputs on the
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// Multiverse pedal
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BAPhysicalControls controls(6, 4, 4, 2); // (SW, POT, ENC, LED)
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unsigned loopCounter = 0; |
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void drawProgressBar(float completion); // declaration
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void drawBlackaddrAudio() { |
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display.setCursor(0, 24); // (x,y)
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display.printf(" Blackaddr"); |
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display.setCursor(0, 40); // (x,y)
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display.printf(" Audio"); |
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} |
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void setup() { |
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codec.disable(); // this will reset the codec
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// wait up for the serial to appear for up to 1 second
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Serial.begin(57600); |
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unsigned serialLoopCount = 10; |
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while (!Serial && (serialLoopCount > 0)) { |
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delay(100); |
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serialLoopCount--; |
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} |
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MULTIVERSE(); // constants defined in BALibrary become valid only after this call
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SPI_MEM1_64M(); // Declare the correct memory size
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// Init the display
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display.begin(SH1106_SWITCHCAPVCC, SH1106_I2C_ADDRESS, true); |
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display.clearDisplay(); |
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display.display(); |
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display.setTextColor(WHITE); // Draw white text
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display.setFont(&FreeSansBold9pt7b); |
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drawBlackaddrAudio(); |
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display.display(); |
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configPhysicalControls(&controls, &codec);
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// Request a memory slot from the external RAM
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size_t numBytes = BAHardwareConfig.getSpiMemSizeBytes(MemSelect::MEM1); |
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spiAddressMax = BAHardwareConfig.getSpiMemMaxAddr(1)/4; // test the first 25% of memory
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bool success = sramManager.requestMemory(&memSlot, numBytes, MemSelect::MEM1, /* no DMA */ false); |
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if (!success && Serial) { printf("Request for memory slot failed\n\r"); }
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// Allocated audio buffers and enable codec
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AudioMemory(64); |
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codec.enable(); |
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delay(100); |
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// Mixer at full volume
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volumeOut.gain(0,1.0f); |
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volumeOut.gain(1,1.0f); |
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// flush the pot filters. The analog measurement of the analog pots is averaged (filtered)
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// over time, so at startup you will see a bunch of false changes detected as the filter
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// settles. We can force this with a few dozen repeated calls.
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for (unsigned i=0; i < 50; i++) { |
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float potValue; |
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for (unsigned j=0; j < BA_EXPAND_NUM_POT; j++) { |
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controls.checkPotValue(j, potValue);
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} |
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delay(10); |
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} |
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} |
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void loop() { |
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// Check all the physical controls for updates
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checkPot(0); |
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checkPot(1); |
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checkPot(2); |
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checkPot(3); |
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checkSwitch(0); |
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checkSwitch(1); |
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checkSwitch(2); |
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checkSwitch(3); |
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checkSwitch(4); |
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checkSwitch(5); |
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checkEncoder(0); |
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checkEncoder(1); |
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checkEncoder(2); |
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checkEncoder(3);
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// If the SRAM test is not complete, run the next block
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if (sramCompletion < 1.0f) { |
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nextSpiMemTestBlock();
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} |
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// Adjusting one of the knobs/switches will result in its value being display for
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// 2 seconds in the check*() functions.
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if (timer > 2000) { |
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loopCounter++;
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display.clearDisplay(); |
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drawBlackaddrAudio(); |
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drawSramProgress(sramCompletion);
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display.display();
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} |
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} |
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// This function will draw on the display which stage the memory test is in, and
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// the percentage complete for that stage.
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void drawSramProgress(float completion) |
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{ |
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if (errorCount > 0) { // If errors, print the error count
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display.setCursor(0, SCREEN_HEIGHT-1); |
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display.printf("Errors: %d", errorCount);
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return; |
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} |
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// Draw the SRAM test progress at the bottom of the screen
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display.setCursor(0, SCREEN_HEIGHT-1); |
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switch(sramStage) {
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case 0 : display.printf("0 mem:"); break; |
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case 1 : display.printf("0 chk:"); break; |
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case 2 : display.printf("wr mem:"); break; |
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case 3 : display.printf("rd mem:"); break; |
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case 4 : // same as default
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default: display.printf("Done"); break; |
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} |
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display.setCursor(SCREEN_WIDTH*0.63f, SCREEN_HEIGHT-1); // position to lower right corner
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display.printf("%0.f%%", 100.0f * completion); |
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} |
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// Create a predictable data pattern based on address.
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constexpr int mask0 = 0x5555; |
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constexpr int mask1 = 0xaaaa; |
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int calcNextData(int spiAddress, int loopPhase, int maskPhase) |
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{ |
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int data; |
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int phase = ((loopPhase << 1) + maskPhase) & 0x3; |
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switch(phase) |
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{ |
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case 0 : |
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data = spiAddress ^ mask0; |
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break; |
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case 1: |
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data = spiAddress ^ mask1; |
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break; |
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case 2: |
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data = ~spiAddress ^ mask0; |
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break; |
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case 3: |
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data = ~spiAddress ^ mask1; |
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} |
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return (data & 0xffff); |
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} |
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// Process the next block of data in the memory test
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void nextSpiMemTestBlock() |
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{ |
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constexpr unsigned BLOCK_SIZE_BYTES = 256; // transfer 256 bytes (arbitrary) per transaction
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constexpr unsigned NUM_BLOCK_WORDS = BLOCK_SIZE_BYTES; |
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static uint8_t buffer[BLOCK_SIZE_BYTES]; |
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static int16_t buffer16a[NUM_BLOCK_WORDS]; |
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static int16_t buffer16b[NUM_BLOCK_WORDS]; |
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static int maskPhase = 0; |
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if (sramStage == 0) { // Zero write
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// zero the memory
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while (spiMem1.isWriteBusy()) {} // wait for DMA write to complete
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memSlot.zero(spiAddress, BLOCK_SIZE_BYTES); |
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spiAddress += BLOCK_SIZE_BYTES;
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} else if (sramStage == 1) { // Zero check
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memSlot.read(spiAddress, buffer, BLOCK_SIZE_BYTES); |
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while (spiMem1.isReadBusy()) {} // wait for DMA read results
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for (unsigned i=0; i < BLOCK_SIZE_BYTES; i++) { |
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if (buffer[i] != 0) { errorCount++; } |
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} |
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spiAddress += BLOCK_SIZE_BYTES; |
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} |
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else if (sramStage == 2) { // write test
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// Calculate the data for a block
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for (unsigned i=0; i<NUM_BLOCK_WORDS; i++) { |
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buffer16a[i] = calcNextData(spiAddress+i, 0, 0); |
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maskPhase = (maskPhase+1) % 2; |
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} |
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memSlot.write16(spiAddress, buffer16a, NUM_BLOCK_WORDS); |
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while (memSlot.isWriteBusy()) {} // wait for DMA write to complete
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spiAddress += BLOCK_SIZE_BYTES; |
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} |
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else if (sramStage == 3) { // read test
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// Calculate the data for a block
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for (unsigned i=0; i<NUM_BLOCK_WORDS; i++) { |
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buffer16a[i] = calcNextData(spiAddress+i, 0, 0); |
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maskPhase = (maskPhase+1) % 2; |
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} |
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memSlot.read16(spiAddress, buffer16b, NUM_BLOCK_WORDS); |
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while (memSlot.isReadBusy()) {} // wait for DMA read results
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for (unsigned i=0; i < NUM_BLOCK_WORDS; i++) { |
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if (buffer16a[i] != buffer16b[i]) { errorCount++; } |
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}
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spiAddress += BLOCK_SIZE_BYTES; |
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} |
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else if (sramStage == 4) { |
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sramCompletion = 1.0f; |
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return; |
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} |
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if (spiAddress > spiAddressMax && sramStage < 4) {
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spiAddress = 0; sramStage++; sramCompletion = 0.0f; |
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return; |
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} |
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sramCompletion = (float)spiAddress / (float)spiAddressMax ; |
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} |
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@ -0,0 +1,222 @@ |
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#include <cmath> |
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#include "Adafruit_SH1106.h" |
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#include "BALibrary.h" |
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#include "DebugPrintf.h" |
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using namespace BALibrary; |
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// Declare the externally shared variables from the main .ino
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extern Adafruit_SH1106 display; |
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extern BAAudioControlWM8731master codec; |
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extern AudioMixer4 volumeOut; |
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extern elapsedMillis timer; |
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constexpr int displayRow = 36; // Row to start OLED display updates on
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constexpr int potCalibMin = 8; |
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constexpr int potCalibMax = 1016; |
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constexpr bool potSwapDirection = true; |
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constexpr bool encSwapDirection = true; |
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int pot1Handle= -1, pot2Handle = -1, pot3Handle = -1, pot4Handle = -1; |
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int sw1Handle = -1, sw2Handle = -1, sw3Handle = -1, sw4Handle = -1, sw5Handle = -1, sw6Handle = -1; |
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int enc1Handle = -1, enc2Handle = -1, enc3Handle = -1, enc4Handle = -1; |
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int led1Handle = -1, led2Handle = -1; |
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BAAudioControlWM8731master *codecPtr = nullptr; |
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BAPhysicalControls *controlPtr = nullptr; |
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// Configure and setup the physical controls
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void configPhysicalControls(BAPhysicalControls* controls, BAAudioControlWM8731master* codec) |
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{ |
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// Setup the controls. The return value is the handle to use when checking for control changes, etc.
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controlPtr = controls; |
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codecPtr = codec; |
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if (!controlPtr) { DEBUG_PRINT(Serial.printf("ERROR: controlPtr is invalid\n\r")); return; } |
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if (!codecPtr) { DEBUG_PRINT(Serial.printf("ERROR: codecPtr is invalid\n\r")); return; } |
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// pushbuttons
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sw1Handle = controlPtr->addSwitch(BA_EXPAND_SW1_PIN); |
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sw2Handle = controlPtr->addSwitch(BA_EXPAND_SW2_PIN); |
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sw3Handle = controlPtr->addSwitch(BA_EXPAND_SW3_PIN); |
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sw4Handle = controlPtr->addSwitch(BA_EXPAND_SW4_PIN); |
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sw5Handle = controlPtr->addSwitch(BA_EXPAND_SW5_PIN); |
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sw6Handle = controlPtr->addSwitch(BA_EXPAND_SW6_PIN); |
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// pots
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pot1Handle = controlPtr->addPot(BA_EXPAND_POT1_PIN, potCalibMin, potCalibMax, potSwapDirection); |
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pot2Handle = controlPtr->addPot(BA_EXPAND_POT2_PIN, potCalibMin, potCalibMax, potSwapDirection);
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pot3Handle = controlPtr->addPot(BA_EXPAND_POT3_PIN, potCalibMin, potCalibMax, potSwapDirection); |
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pot4Handle = controlPtr->addPot(BA_EXPAND_POT4_PIN, potCalibMin, potCalibMax, potSwapDirection); |
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// encoders
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enc1Handle = controlPtr->addRotary(BA_EXPAND_ENC1_A_PIN, BA_EXPAND_ENC1_B_PIN, encSwapDirection); |
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enc2Handle = controlPtr->addRotary(BA_EXPAND_ENC2_A_PIN, BA_EXPAND_ENC2_B_PIN, encSwapDirection);
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enc3Handle = controlPtr->addRotary(BA_EXPAND_ENC3_A_PIN, BA_EXPAND_ENC3_B_PIN, encSwapDirection); |
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enc4Handle = controlPtr->addRotary(BA_EXPAND_ENC4_A_PIN, BA_EXPAND_ENC4_B_PIN, encSwapDirection); |
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// leds
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led1Handle = controlPtr->addOutput(BA_EXPAND_LED1_PIN); |
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led2Handle = controlPtr->addOutput(BA_EXPAND_LED2_PIN); // will illuminate when pressing SW2
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} |
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void checkPot(unsigned id) |
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{ |
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float potValue; |
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unsigned handle; |
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switch(id) { |
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case 0 : |
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handle = pot1Handle; |
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break; |
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case 1 : |
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handle = pot2Handle; |
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break; |
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case 2 : |
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handle = pot3Handle; |
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break; |
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case 3 : |
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handle = pot4Handle; |
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break; |
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default : |
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handle = pot1Handle; |
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} |
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if ((handle < 0) || (handle >= controlPtr->getNumPots())) { |
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DEBUG_PRINT(Serial.printf("ILLEGAL POT HANDLE: %d for id %d\n\r", handle, id)); |
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return; |
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} |
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if (controlPtr->checkPotValue(handle, potValue)) { |
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// Pot has changed
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DEBUG_PRINT(Serial.println(String("POT") + id + String(" value: ") + potValue)); |
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timer = 0; |
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display.clearDisplay(); |
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display.setCursor(0,displayRow); |
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switch(id) { |
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|
case 0 : |
||||||
|
{ |
||||||
|
display.printf("Gain: %0.f\n", potValue * 100.0f); |
||||||
|
int gain = static_cast<int>(std::roundf(31.0f * potValue)); |
||||||
|
codecPtr->setLeftInputGain(gain); |
||||||
|
codecPtr->setRightInputGain(gain); |
||||||
|
yield(); // give time for i2C transfers to complete
|
||||||
|
break; |
||||||
|
} |
||||||
|
case 1 :
|
||||||
|
{ |
||||||
|
display.printf("Level: %0.f\n", potValue * 100.0f); |
||||||
|
volumeOut.gain(0, potValue); |
||||||
|
volumeOut.gain(1, potValue); |
||||||
|
break; |
||||||
|
} |
||||||
|
case 2 : display.printf("Exp T: %0.f\n", potValue * 100.0f); break; |
||||||
|
case 3 : display.printf("Exp R: %0.f\n", potValue * 100.0f); break; |
||||||
|
} |
||||||
|
display.display(); |
||||||
|
} |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
int checkSwitch(unsigned id, bool getValueOnly=false) |
||||||
|
{ |
||||||
|
unsigned swHandle = -1; |
||||||
|
unsigned ledHandle = -1; |
||||||
|
switch(id) { |
||||||
|
case 0 : |
||||||
|
swHandle = sw1Handle; |
||||||
|
ledHandle = led1Handle; |
||||||
|
break; |
||||||
|
case 1 : |
||||||
|
swHandle = sw2Handle; |
||||||
|
ledHandle = led2Handle; |
||||||
|
break; |
||||||
|
case 2 : |
||||||
|
swHandle = sw3Handle; |
||||||
|
break; |
||||||
|
case 3 : |
||||||
|
swHandle = sw4Handle; |
||||||
|
break; |
||||||
|
case 4 : |
||||||
|
swHandle = sw5Handle; |
||||||
|
break; |
||||||
|
case 5 : |
||||||
|
swHandle = sw6Handle; |
||||||
|
break; |
||||||
|
default : |
||||||
|
swHandle = sw1Handle; |
||||||
|
ledHandle = led1Handle; |
||||||
|
} |
||||||
|
|
||||||
|
if ((swHandle < 0) || (swHandle >= controlPtr->getNumSwitches())) { |
||||||
|
DEBUG_PRINT(Serial.printf("ILLEGAL SWITCH HANDLE: %d for id %d\n\r", swHandle, id); Serial.flush()); |
||||||
|
return -1; |
||||||
|
} |
||||||
|
|
||||||
|
bool switchValue; |
||||||
|
bool changed = controlPtr->hasSwitchChanged(swHandle, switchValue); |
||||||
|
if (getValueOnly) { return controlPtr->getSwitchValue(swHandle); } |
||||||
|
|
||||||
|
if (changed) { |
||||||
|
DEBUG_PRINT(Serial.println(String("Button ") + id + String(" pressed"))); |
||||||
|
timer = 0; |
||||||
|
display.clearDisplay(); |
||||||
|
display.setCursor(0, displayRow); |
||||||
|
switch(id) { |
||||||
|
case 0 : display.printf("S1: %d\n", switchValue); break; |
||||||
|
case 1 : display.printf("S2: %d\n", switchValue); break; |
||||||
|
case 2 : display.printf("EncSw A: %d\n", switchValue); break; |
||||||
|
case 3 : display.printf("EncSw B: %d\n", switchValue); break; |
||||||
|
case 4 : display.printf("EncSw C: %d\n", switchValue); break; |
||||||
|
case 5 : display.printf("EncSw D: %d\n", switchValue); break; |
||||||
|
} |
||||||
|
display.display(); |
||||||
|
} |
||||||
|
|
||||||
|
if (swHandle < 2) { // these SWs map to LEDs
|
||||||
|
bool pressed = controlPtr->isSwitchHeld(swHandle); |
||||||
|
controlPtr->setOutput(ledHandle, pressed); |
||||||
|
} |
||||||
|
return controlPtr->getSwitchValue(swHandle); |
||||||
|
} |
||||||
|
|
||||||
|
void checkEncoder(unsigned id) |
||||||
|
{ |
||||||
|
unsigned encHandle; |
||||||
|
static int enc1 = 0, enc2 = 0, enc3 = 0, enc4 = 0; |
||||||
|
switch(id) { |
||||||
|
case 0 : |
||||||
|
encHandle = enc1Handle; |
||||||
|
break; |
||||||
|
case 1 : |
||||||
|
encHandle = enc2Handle; |
||||||
|
break; |
||||||
|
case 2 : |
||||||
|
encHandle = enc3Handle; |
||||||
|
break; |
||||||
|
case 3 : |
||||||
|
encHandle = enc4Handle; |
||||||
|
break; |
||||||
|
default : |
||||||
|
encHandle = enc1Handle; |
||||||
|
} |
||||||
|
|
||||||
|
if ((encHandle < 0) || (encHandle >= controlPtr->getNumRotary())) { |
||||||
|
DEBUG_PRINT(Serial.printf("ILLEGAL ENCODER HANDLE: %d for id %d\n\r", encHandle, id); Serial.flush()); |
||||||
|
return; |
||||||
|
} |
||||||
|
|
||||||
|
int adj= controlPtr->getRotaryAdjustUnit(encHandle); |
||||||
|
if (adj != 0) {
|
||||||
|
DEBUG_PRINT(Serial.printf("Enc %d: %d\n\r", id, adj); Serial.flush());
|
||||||
|
display.clearDisplay(); |
||||||
|
display.setCursor(0, displayRow); |
||||||
|
switch(id) { |
||||||
|
case 0 : enc1 += adj; display.printf("Enc A: %d", enc1); break; |
||||||
|
case 1 : enc2 += adj; display.printf("Enc B: %d", enc2); break; |
||||||
|
case 2 : enc3 += adj; display.printf("Enc C: %d", enc3); break; |
||||||
|
case 3 : enc4 += adj; display.printf("Enc D: %d", enc4); break; |
||||||
|
} |
||||||
|
display.display(); |
||||||
|
timer = 0; |
||||||
|
} |
||||||
|
} |
||||||
@ -0,0 +1,11 @@ |
|||||||
|
#ifndef PHYSICAL_CONTROLS_H_ |
||||||
|
#define PHYSICAL_CONTROLS_H_ |
||||||
|
|
||||||
|
#include "BALibrary.h" |
||||||
|
|
||||||
|
void configPhysicalControls(BALibrary::BAPhysicalControls* controls, BALibrary::BAAudioControlWM8731master* codec); |
||||||
|
void checkPot(unsigned id); |
||||||
|
int checkSwitch(unsigned id, bool getValueOnly=false); |
||||||
|
void checkEncoder(unsigned id); |
||||||
|
|
||||||
|
#endif |
||||||
Loading…
Reference in new issue