LEDs now operating on button push

Fixed several bugs:
- TCB wasn't running. The datasheet steps were not complete.
- TCA was waking the MCU and causing the main program to run. Added checks
  to ensure program only runs on button or TCB wakeup.
- Fixed some peculiarities with specific RGBLED programs

fw/HackSpaceCon_AS7/HSC_Wand/isr.cpp

@@ -19,6 +19,7 @@ ISR(TCB0_INT_vect)
 
     // in this program, this interrupt is only used for timing.
     // we'll now return to executing loop()
+	rgb_run_next = 1;
 
     // reset the INTFLAGS - necessary on this series
     TCB0.INTFLAGS = intflags;
@@ -30,12 +31,15 @@ ISR(PORTA_PORT_vect)
     uint8_t intflags = PORTA.INTFLAGS;
 
     // shitty debounce; this is bad practice
-    delay(5);
+    delay(8);
 
 	// was our pin changed?
     if (intflags & PIN2_bm) {
         // start or re-start running a program
+		if (!digitalRead(PIN_PA2)) {
 			run_rgbprog = 1;        // run a new program
+			rgb_run_next = 1;
+		}
     }
 
     // reset the INTFLAGS - necessary on this series

fw/HackSpaceCon_AS7/HSC_Wand/rgbled.cpp

@@ -30,17 +30,20 @@ uint8_t (*rgb_program[PROG_COUNT])(uint8_t) = {
 uint8_t rgbled[3 * RGB_COUNT];
 
 
+volatile uint8_t rgb_run_next = 0;		// set to 1 to run next frame
+
+
 // configures and enables the 50Hz timer interrupt that is used for RGB program updates
 void conf_rgb_timer()
 {
     // this timer will run at half speed.
-    // so 8MHz / 2 (timer prescale) / 2 (CLK_PER) = 2MHz
+    // so 16MHz / 2 (timer prescale) / 2 (CLK_PER) = 4MHz
-    // this will allow a cycle time with 33333 counts to be 60Hz.
+    // this will allow a cycle time with full counts to be ~61Hz.
 
     disable_rgb_timer();
     
     TCB0.CTRLA = TCB_CLKSEL_CLKDIV2_gc;		// prescale timer to run at half speed
-    TCB0.CCMP = 33333 - 1;                 // count to full
+    TCB0.CCMP = 0xffff;						// count to full
     TCB0.CNT = 0;
 }
 
@@ -56,7 +59,7 @@ uint8_t  r, g, b;
 #define RAINBOW_OFFSET      (1536/5)            // offset between each LED
 #define RAINBOW_TIMEOUT     240                 // how long to show this program
 #define RAINBOW_SAT         0xff                // saturation
-#define RAINBOW_VAL         0x40                // value (brightness); keep low enough to keep average current down
+#define RAINBOW_VAL         0x20                // value (brightness); keep low enough to keep average current down
 
 uint16_t rainbow_hue = 0;
 
@@ -101,23 +104,25 @@ uint8_t rgbp_rainbow(uint8_t init)
 
 // rgb program 2: circle loops with fading
 #define CF_TIMEOUT      90              // how long to show this program (max 255, ideally (20*loopcount)+10)
-#define CF_BRIGHTNESS   64              // how bright to make the LED. don't make too bright or badge will brown out
+#define CF_BRIGHTNESS   48              // how bright to make the LED. don't make too bright or badge will brown out
-#define CF_FADERATE     12              // how much to fade all LEDs each frame
+#define CF_FADERATE     6				// how much to fade all LEDs each frame
 
 uint8_t circlefade_idx = 0;
+uint8_t circlefade_delay = 0;
 
 uint8_t rgbp_circlefade(uint8_t init)
 {
     uint8_t i;
     uint8_t t;
 	
+	
     // set our timer when initializing. otherwise every call is identical
     if (init) {
         prog_timeout = CF_TIMEOUT;
         circlefade_idx = 4;         // top LED
     }
 
-    if (--prog_timeout) {
+    if (prog_timeout) {
         t = (uint8_t)(CF_TIMEOUT - prog_timeout);   // get time elapsed
         t &= 0x3;                                   // light a new LED every 4th loop
 
@@ -133,7 +138,7 @@ uint8_t rgbp_circlefade(uint8_t init)
         // set the next LED in sequence on to full brightness every 4 cycles
         if (prog_timeout >= 10) {                   // as long as >10 loops remain,
             if (!t) {                               // then on a loop boundary, light the next LED
-                rgb.setPixelColor(circlefade_idx, CF_BRIGHTNESS, CF_BRIGHTNESS, CF_BRIGHTNESS);
+                rgb.setPixelColor(circlefade_idx, 56, 16, 44);
 
                 if (++circlefade_idx >= RGB_COUNT) { // then work on the next LED in sequence
                     circlefade_idx = 0;
@@ -141,6 +146,8 @@ uint8_t rgbp_circlefade(uint8_t init)
             }
         }
 		
+		prog_timeout--;
+		
 		return 1;
     }
 	

fw/HackSpaceCon_AS7/HSC_Wand/rgbled.h

@@ -19,8 +19,9 @@
 
 
 
-#define enable_rgb_timer()      {TCB0.CNT = 0; TCB0.CTRLA |=  1;};
+#define enable_rgb_timer()      {TCB0.CNT = 0; TCB0.INTFLAGS = 0xff; \
-#define disable_rgb_timer()     {TCB0.CTRLA &= ~1;};
+								 TCB0.INTCTRL = TCB_CAPT_bm; TCB0.CTRLA |=  TCB_ENABLE_bm;};
+#define disable_rgb_timer()     {TCB0.INTCTRL = 0;           TCB0.CTRLA &= ~TCB_ENABLE_bm;};
 
 
 
@@ -31,6 +32,10 @@ extern uint8_t (*rgb_program[PROG_COUNT])(uint8_t);
 
 
 
+extern volatile uint8_t rgb_run_next;
+
+
+
 void conf_rgb_timer();
 
 

fw/HackSpaceCon_AS7/HSC_Wand/wand_program.cpp

@@ -120,6 +120,12 @@ void setup() {
 
 // mcu program loop
 void loop() {
+	while (!rgb_run_next) {
+		// __asm("sleep");
+	}
+	
+	rgb_run_next = 0;
+		
 	switch (run_rgbprog) {
 		case RGB_INIT: {						// just started running a program
 			digitalWrite(PIN_LED_PWRENA, HIGH);	// enable LED power supply,