make TFT_Meters cpp compatible
This commit is contained in:
Brian Vanderbusch
parent
960ff6c7b9
commit
acb62c013e
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@ -31,50 +31,62 @@ int value[6] = {0, 0, 0, 0, 0, 0};
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int old_value[6] = { -1, -1, -1, -1, -1, -1};
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int d = 0;
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void setup(void) {
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tft.init();
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tft.setRotation(0);
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Serial.begin(57600); // For debug
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tft.fillScreen(TFT_BLACK);
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// #########################################################################
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// Update needle position
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// This function is blocking while needle moves, time depends on ms_delay
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// 10ms minimises needle flicker if text is drawn within needle sweep area
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// Smaller values OK if text not in sweep area, zero for instant movement but
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// does not look realistic... (note: 100 increments for full scale deflection)
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// #########################################################################
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void plotNeedle(int value, byte ms_delay)
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{
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tft.setTextColor(TFT_BLACK, TFT_WHITE);
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char buf[8]; dtostrf(value, 4, 0, buf);
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tft.drawRightString(buf, 40, 119 - 20, 2);
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analogMeter(); // Draw analogue meter
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if (value < -10) value = -10; // Limit value to emulate needle end stops
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if (value > 110) value = 110;
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// Draw 6 linear meters
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byte d = 40;
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plotLinear("A0", 0, 160);
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plotLinear("A1", 1 * d, 160);
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plotLinear("A2", 2 * d, 160);
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plotLinear("A3", 3 * d, 160);
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plotLinear("A4", 4 * d, 160);
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plotLinear("A5", 5 * d, 160);
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// Move the needle util new value reached
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while (!(value == old_analog)) {
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if (old_analog < value) old_analog++;
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else old_analog--;
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updateTime = millis(); // Next update time
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}
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if (ms_delay == 0) old_analog = value; // Update immediately id delay is 0
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float sdeg = map(old_analog, -10, 110, -150, -30); // Map value to angle
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// Calcualte tip of needle coords
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float sx = cos(sdeg * 0.0174532925);
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float sy = sin(sdeg * 0.0174532925);
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void loop() {
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if (updateTime <= millis()) {
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updateTime = millis() + LOOP_PERIOD;
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// Calculate x delta of needle start (does not start at pivot point)
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float tx = tan((sdeg + 90) * 0.0174532925);
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d += 4; if (d >= 360) d = 0;
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// Erase old needle image
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tft.drawLine(120 + 20 * ltx - 1, 140 - 20, osx - 1, osy, TFT_WHITE);
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tft.drawLine(120 + 20 * ltx, 140 - 20, osx, osy, TFT_WHITE);
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tft.drawLine(120 + 20 * ltx + 1, 140 - 20, osx + 1, osy, TFT_WHITE);
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//value[0] = map(analogRead(A0), 0, 1023, 0, 100); // Test with value form Analogue 0
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// Re-plot text under needle
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tft.setTextColor(TFT_BLACK);
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tft.drawCentreString("%RH", 120, 70, 4); // // Comment out to avoid font 4
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// Create a Sine wave for testing
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value[0] = 50 + 50 * sin((d + 0) * 0.0174532925);
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value[1] = 50 + 50 * sin((d + 60) * 0.0174532925);
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value[2] = 50 + 50 * sin((d + 120) * 0.0174532925);
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value[3] = 50 + 50 * sin((d + 180) * 0.0174532925);
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value[4] = 50 + 50 * sin((d + 240) * 0.0174532925);
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value[5] = 50 + 50 * sin((d + 300) * 0.0174532925);
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// Store new needle end coords for next erase
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ltx = tx;
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osx = sx * 98 + 120;
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osy = sy * 98 + 140;
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//unsigned long t = millis();
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// Draw the needle in the new postion, magenta makes needle a bit bolder
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// draws 3 lines to thicken needle
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tft.drawLine(120 + 20 * ltx - 1, 140 - 20, osx - 1, osy, TFT_RED);
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tft.drawLine(120 + 20 * ltx, 140 - 20, osx, osy, TFT_MAGENTA);
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tft.drawLine(120 + 20 * ltx + 1, 140 - 20, osx + 1, osy, TFT_RED);
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plotPointer();
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// Slow needle down slightly as it approaches new postion
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if (abs(old_analog - value) < 10) ms_delay += ms_delay / 5;
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plotNeedle(value[0], 0);
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//Serial.println(millis()-t); // Print time taken for meter update
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// Wait before next update
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delay(ms_delay);
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}
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}
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@ -171,64 +183,6 @@ void analogMeter()
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plotNeedle(0, 0); // Put meter needle at 0
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}
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// #########################################################################
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// Update needle position
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// This function is blocking while needle moves, time depends on ms_delay
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// 10ms minimises needle flicker if text is drawn within needle sweep area
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// Smaller values OK if text not in sweep area, zero for instant movement but
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// does not look realistic... (note: 100 increments for full scale deflection)
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// #########################################################################
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void plotNeedle(int value, byte ms_delay)
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{
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tft.setTextColor(TFT_BLACK, TFT_WHITE);
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char buf[8]; dtostrf(value, 4, 0, buf);
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tft.drawRightString(buf, 40, 119 - 20, 2);
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if (value < -10) value = -10; // Limit value to emulate needle end stops
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if (value > 110) value = 110;
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// Move the needle util new value reached
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while (!(value == old_analog)) {
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if (old_analog < value) old_analog++;
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else old_analog--;
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if (ms_delay == 0) old_analog = value; // Update immediately id delay is 0
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float sdeg = map(old_analog, -10, 110, -150, -30); // Map value to angle
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// Calcualte tip of needle coords
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float sx = cos(sdeg * 0.0174532925);
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float sy = sin(sdeg * 0.0174532925);
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// Calculate x delta of needle start (does not start at pivot point)
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float tx = tan((sdeg + 90) * 0.0174532925);
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// Erase old needle image
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tft.drawLine(120 + 20 * ltx - 1, 140 - 20, osx - 1, osy, TFT_WHITE);
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tft.drawLine(120 + 20 * ltx, 140 - 20, osx, osy, TFT_WHITE);
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tft.drawLine(120 + 20 * ltx + 1, 140 - 20, osx + 1, osy, TFT_WHITE);
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// Re-plot text under needle
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tft.setTextColor(TFT_BLACK);
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tft.drawCentreString("%RH", 120, 70, 4); // // Comment out to avoid font 4
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// Store new needle end coords for next erase
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ltx = tx;
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osx = sx * 98 + 120;
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osy = sy * 98 + 140;
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// Draw the needle in the new postion, magenta makes needle a bit bolder
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// draws 3 lines to thicken needle
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tft.drawLine(120 + 20 * ltx - 1, 140 - 20, osx - 1, osy, TFT_RED);
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tft.drawLine(120 + 20 * ltx, 140 - 20, osx, osy, TFT_MAGENTA);
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tft.drawLine(120 + 20 * ltx + 1, 140 - 20, osx + 1, osy, TFT_RED);
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// Slow needle down slightly as it approaches new postion
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if (abs(old_analog - value) < 10) ms_delay += ms_delay / 5;
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// Wait before next update
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delay(ms_delay);
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}
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}
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// #########################################################################
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// Draw a linear meter on the screen
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@ -295,3 +249,50 @@ void plotPointer(void)
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}
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}
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void setup(void) {
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tft.init();
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tft.setRotation(0);
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Serial.begin(57600); // For debug
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tft.fillScreen(TFT_BLACK);
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analogMeter(); // Draw analogue meter
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// Draw 6 linear meters
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byte d = 40;
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plotLinear("A0", 0, 160);
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plotLinear("A1", 1 * d, 160);
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plotLinear("A2", 2 * d, 160);
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plotLinear("A3", 3 * d, 160);
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plotLinear("A4", 4 * d, 160);
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plotLinear("A5", 5 * d, 160);
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updateTime = millis(); // Next update time
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}
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void loop() {
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if (updateTime <= millis()) {
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updateTime = millis() + LOOP_PERIOD;
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d += 4; if (d >= 360) d = 0;
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//value[0] = map(analogRead(A0), 0, 1023, 0, 100); // Test with value form Analogue 0
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// Create a Sine wave for testing
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value[0] = 50 + 50 * sin((d + 0) * 0.0174532925);
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value[1] = 50 + 50 * sin((d + 60) * 0.0174532925);
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value[2] = 50 + 50 * sin((d + 120) * 0.0174532925);
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value[3] = 50 + 50 * sin((d + 180) * 0.0174532925);
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value[4] = 50 + 50 * sin((d + 240) * 0.0174532925);
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value[5] = 50 + 50 * sin((d + 300) * 0.0174532925);
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//unsigned long t = millis();
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plotPointer();
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plotNeedle(value[0], 0);
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//Serial.println(millis()-t); // Print time taken for meter update
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}
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}
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