127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
/*
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* This example is pulled from the DS1307RTC library with slight
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* modifications to demonstrate how to use the alternate I2C pins
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* accessible on the SmartMatrix Shield.
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*
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* Original DS1307RTC Library:
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* https://www.pjrc.com/teensy/td_libs_DS1307RTC.html
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*
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* Requires a DS1307, DS1337 or DS3231 RTC chip connected to
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* Teensy pins 16 (SCL) and 17 (SDA)
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*
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* This SmartMatrix example uses just the indexed color layer
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*/
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#include <Wire.h>
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#include <Time.h>
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#include <DS1307RTC.h>
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//#include <SmartLEDShieldV4.h> // uncomment this line for SmartLED Shield V4 (needs to be before #include <SmartMatrix3.h>)
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#include <SmartMatrix3.h>
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#define COLOR_DEPTH 24 // known working: 24, 48 - If the sketch uses type `rgb24` directly, COLOR_DEPTH must be 24
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const uint8_t kMatrixWidth = 32; // known working: 32, 64, 96, 128
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const uint8_t kMatrixHeight = 32; // known working: 16, 32, 48, 64
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const uint8_t kRefreshDepth = 36; // known working: 24, 36, 48
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const uint8_t kDmaBufferRows = 4; // known working: 2-4, use 2 to save memory, more to keep from dropping frames and automatically lowering refresh rate
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const uint8_t kPanelType = SMARTMATRIX_HUB75_32ROW_MOD16SCAN; // use SMARTMATRIX_HUB75_16ROW_MOD8SCAN for common 16x32 panels
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const uint8_t kMatrixOptions = (SMARTMATRIX_OPTIONS_NONE); // see http://docs.pixelmatix.com/SmartMatrix for options
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const uint8_t kIndexedLayerOptions = (SM_INDEXED_OPTIONS_NONE);
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SMARTMATRIX_ALLOCATE_BUFFERS(matrix, kMatrixWidth, kMatrixHeight, kRefreshDepth, kDmaBufferRows, kPanelType, kMatrixOptions);
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SMARTMATRIX_ALLOCATE_INDEXED_LAYER(indexedLayer, kMatrixWidth, kMatrixHeight, COLOR_DEPTH, kIndexedLayerOptions);
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const int defaultBrightness = (100*255)/100; // full (100%) brightness
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//const int defaultBrightness = (15*255)/100; // dim: 15% brightness
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const SM_RGB clockColor = {0xff, 0xff, 0xff};
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void setup() {
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Serial.begin(9600);
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delay(200);
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Serial.println("DS1307RTC Read Test");
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Serial.println("-------------------");
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// setup matrix
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matrix.addLayer(&indexedLayer);
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matrix.begin();
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/* I2C Changes Needed for SmartMatrix Shield */
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// switch pins to use 16/17 for I2C instead of 18/19, after calling matrix.begin()//
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pinMode(18, INPUT);
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pinMode(19, INPUT);
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CORE_PIN16_CONFIG = (PORT_PCR_MUX(2) | PORT_PCR_PE | PORT_PCR_PS);
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CORE_PIN17_CONFIG = (PORT_PCR_MUX(2) | PORT_PCR_PE | PORT_PCR_PS);
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// display a simple message - will stay on the screen if calls to the RTC library fail later
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indexedLayer.fillScreen(0);
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indexedLayer.setFont(gohufont11b);
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indexedLayer.drawString(0, kMatrixHeight / 2 - 6, 1, "CLOCK");
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indexedLayer.swapBuffers(false);
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matrix.setBrightness(defaultBrightness);
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}
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void loop() {
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tmElements_t tm;
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int x = kMatrixWidth/2-15;
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char timeBuffer[9];
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// clear screen before writing new text
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indexedLayer.fillScreen(0);
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if (RTC.read(tm)) {
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Serial.print("Ok, Time = ");
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print2digits(tm.Hour);
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Serial.write(':');
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print2digits(tm.Minute);
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Serial.write(':');
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print2digits(tm.Second);
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Serial.print(", Date (D/M/Y) = ");
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Serial.print(tm.Day);
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Serial.write('/');
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Serial.print(tm.Month);
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Serial.write('/');
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Serial.print(tmYearToCalendar(tm.Year));
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Serial.println();
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/* Draw Clock to SmartMatrix */
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uint8_t hour = tm.Hour;
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if (hour > 12)
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hour -= 12;
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sprintf(timeBuffer, "%d:%02d", hour, tm.Minute);
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if (hour < 10)
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x += 3;
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indexedLayer.setFont(gohufont11b);
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indexedLayer.drawString(x, kMatrixHeight / 2 - 6, 1, timeBuffer);
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indexedLayer.swapBuffers();
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} else {
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if (RTC.chipPresent()) {
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Serial.println("The DS1307 is stopped. Please run the SetTime");
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Serial.println("example to initialize the time and begin running.");
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Serial.println();
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/* Draw Error Message to SmartMatrix */
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indexedLayer.setFont(font3x5);
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sprintf(timeBuffer, "Stopped");
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indexedLayer.drawString(x, kMatrixHeight / 2 - 3, 1, "Stopped");
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} else {
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Serial.println("DS1307 read error! Please check the circuitry.");
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Serial.println();
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/* Draw Error Message to SmartMatrix */
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indexedLayer.setFont(font3x5);
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indexedLayer.drawString(x, kMatrixHeight / 2 - 3, 1, "No Clock");
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}
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indexedLayer.swapBuffers();
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delay(9000);
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}
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delay(1000);
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}
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void print2digits(int number) {
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if (number >= 0 && number < 10) {
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Serial.write('0');
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}
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Serial.print(number);
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}
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