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striscia led
Dependencies: X_NUCLEO_LED61A1 mbed
Fork of HelloWorld_LED61A1 by
Diff: main.cpp
- Revision:
- 5:b00bbf1edfa9
- Parent:
- 4:aeeb361d0227
- Child:
- 6:899828fd9d9d
--- a/main.cpp Fri Dec 18 17:05:26 2015 +0000 +++ b/main.cpp Thu Jan 14 17:07:33 2016 +0000 @@ -50,22 +50,25 @@ /* PI. */ #ifndef M_PI - #define M_PI 3.14159265358979323846f + #define M_PI (3.14159265358979323846f) #endif /* Loop period in micro-seconds. */ -#define LOOP_PERIOD_us 1E5 +#define LOOP_PERIOD_us (1E5) /* Sin period in micro-seconds. */ -#define PWM_SIN_PERIOD_us 1E7 -#define ANALOG_SIN_PERIOD_us 1E7 +#define PWM_SIN_PERIOD_us (1E7) +#define ANALOG_SIN_PERIOD_us (1E7) /* Duration of button press in milli-seconds. */ -#define SWITCH_DEMO_BUTTON_PRESS_ms 500 -#define SWITCH_POWER_BUTTON_PRESS_ms 2000 +#define SWITCH_DEMO_BUTTON_PRESS_ms (500) +#define SWITCH_POWER_BUTTON_PRESS_ms (2000) + +/* Duration of initialization interval in milli-seconds. */ +#define INITIALIZATION_INTERVAL_ms (2000) /* Dimming Step. */ -#define DIMMING_STEP 0.1f +#define DIMMING_STEP (0.05f) /* Types ---------------------------------------------------------------------*/ @@ -73,11 +76,11 @@ /* Demos. */ typedef enum { - PWM_DIMMING_STEPS = 0, - ANALOG_DIMMING_STEPS, - PWM_DIMMING_VARY, - ANALOG_DIMMING_VARY, - ANALOG_DIMMING_PHOTO, + MANUAL_PWM_DIMMING = 0, + MANUAL_ANALOG_DIMMING, + AUTOMATIC_PWM_DIMMING, + AUTOMATIC_ANALOG_DIMMING, + PHOTO_BASED_ANALOG_DIMMING, LED_DEMO_SIZE } LED_Demo_t; @@ -127,7 +130,7 @@ "Manual Analog Dimming", "Sinusoidal PWM Dimming", "Sinusoidal Analog Dimming", - "Photo-based PWM Dimming" + "Photo-based Analog Dimming" }; @@ -140,6 +143,9 @@ */ void LEDInit(void) { + /* Printing to the console. */ + printf("Initializing LED driver..."); + /* Initializing Interrupt flags. */ button_irq_triggered = false; xfault_irq_triggered = false; @@ -153,6 +159,14 @@ /* Initializing PWM and Analog dimming to maximum values. */ pwm_dimming = 1.0f; analog_dimming = 1.0f; + + /* Start-up sequence. */ + led->PowerOFF(); + wait_ms(INITIALIZATION_INTERVAL_ms); + led->PowerON(); + + /* Printing to the console. */ + printf("Done.\r\n\nDemo:\r\n"); } /** @@ -202,40 +216,39 @@ switch (demo) { /* Changing PWM dimming according to the user button. */ - case PWM_DIMMING_STEPS: + case MANUAL_PWM_DIMMING: if (action == SWITCH_STATE) { pwm_dimming -= DIMMING_STEP; - pwm_dimming = (pwm_dimming <= 0.0f ? 1.0f : pwm_dimming); + pwm_dimming = (pwm_dimming < 0.0f ? 1.0f : pwm_dimming); } break; /* Changing Analog dimming according to the user button. */ - case ANALOG_DIMMING_STEPS: + case MANUAL_ANALOG_DIMMING: if (action == SWITCH_STATE) { analog_dimming -= DIMMING_STEP; - analog_dimming = (analog_dimming <= 0.0f ? 1.0f : analog_dimming); + analog_dimming = (analog_dimming < 0.0f ? 1.0f : analog_dimming); } break; /* Changing PWM dimming continuously. */ - case PWM_DIMMING_VARY: + case AUTOMATIC_PWM_DIMMING: pwm_dimming = 0.5f * sin(2 * M_PI * (tick++ * LOOP_PERIOD_us) / PWM_SIN_PERIOD_us) + 0.5f; tick %= (int) (PWM_SIN_PERIOD_us / LOOP_PERIOD_us) + 1; action = SWITCH_STATE; break; /* Changing Analog dimming continuously. */ - case ANALOG_DIMMING_VARY: + case AUTOMATIC_ANALOG_DIMMING: analog_dimming = 0.5f * sin(2 * M_PI * (tick++ * LOOP_PERIOD_us) / ANALOG_SIN_PERIOD_us) + 0.5f; tick %= (int) (ANALOG_SIN_PERIOD_us / LOOP_PERIOD_us) + 1; action = SWITCH_STATE; break; /* Setting Analog dimming according to the photo sensor. */ - case ANALOG_DIMMING_PHOTO: - //analog_dimming = (uint8_t) (led->GetCurrent() * ADC_RANGE / 72 + 8); + case PHOTO_BASED_ANALOG_DIMMING: analog_dimming = 1.0f - led->GetCurrent(); action = SWITCH_STATE; break; @@ -245,7 +258,7 @@ if (action != NO_ACTION) { /* Printing to the console. */ - printf("%d) %-26s PWM/Analog: %.3f %.3f\r", demo + 1, demos[demo], pwm_dimming, analog_dimming); + printf("%d) %-26s --> Dimming: %0.2f\r", demo + 1, demos[demo], demo == MANUAL_PWM_DIMMING || demo == AUTOMATIC_PWM_DIMMING ? pwm_dimming : analog_dimming); /* Writing PWM and Analog dimming values to the LED. */ led->SetPWMDimming(pwm_dimming); @@ -350,10 +363,15 @@ /*----- Initialization. -----*/ /* Printing to the console. */ - printf("LED Control Application Example\r\n\n"\ - "+ Short Button Press [<%.1fs] --> Manual Dimming\r\n"\ - "+ Medium Button Press --> Switch Demo\r\n"\ - "+ Long Button Press [>%.1fs] --> Switch Power ON/OFF\r\n\n"\ + printf("LED Control Application Example\r\n\n" \ + "Demos:\r\n"); + int demo = 0; + for (demo = 0; demo < LED_DEMO_SIZE; demo++) + printf("%d) %-26s\r\n", demo, demos[demo]); + printf("\r\nActions:\r\n" \ + "+ Short Button Press [<%.1fs] --> Manual Dimming\r\n" \ + "+ Medium Button Press --> Switch Demo\r\n" \ + "+ Long Button Press [>%.1fs] --> Switch Power ON/OFF\r\n\n" \ , SWITCH_DEMO_BUTTON_PRESS_ms / 1000.0f, SWITCH_POWER_BUTTON_PRESS_ms / 1000.0f); /* Initializing LED Control Component. */ @@ -365,6 +383,7 @@ button.fall(ButtonIRQ); button.rise(ButtonIRQ); led->AttachXFaultIRQ(&XFaultIRQ); + led->EnableXFaultIRQ(); ticker.attach_us(TickerIRQ, LOOP_PERIOD_us); /* Initializing the demo. */ @@ -384,12 +403,11 @@ { button_irq_triggered = false; ButtonHandler(); - } else if(xfault_irq_triggered) + } else if (xfault_irq_triggered) { xfault_irq_triggered = false; XFaultHandler(); - } else - { + } else { /* It is recommended that SEVONPEND in the System Control Register is NOT set. */ __WFE(); }