Revision 1095
Test code to clarify timer operation
Created data structures
| branches/library_refactor/behaviors/library_test/main.c | ||
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| 84 | 84 |
//orb_enable (); |
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orb_init (); |
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delay_ms (1000); |
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while (1) |
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//delay_ms (1000);
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while (1);
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{
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orb1_set (1,0,0); |
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orb2_set (0,1,0); |
| branches/library_refactor/projects/libdragonfly/lights.c | ||
|---|---|---|
| 46 | 46 |
bugs, unnecessary synchronized code, memory waste |
| 47 | 47 |
*/ |
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/* |
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Operation: |
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On timer overflow: |
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- switch on LEDs (where value>0, according to a pre-determined mask) |
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- load the first output compare value |
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At compare match: |
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- switch off LEDs (according to mask) |
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- load the next output compare value |
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*/ |
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#include "lights.h" |
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#include <avr/interrupt.h> |
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#include "dragonfly_lib.h" |
| ... | ... | |
| 93 | 104 |
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// Mask for the individual LEDs, organized as an array for programmatic access. |
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// The layout of this array is orb_mask[orb_num, color_num] |
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const uint8_t orb_mask[2][3]=
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const uint8_t orb_mask[NUM_ORBS][NUM_COLORS]=
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{
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{ orb1_red_mask, orb1_green_mask, orb1_blue_mask },
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{ orb2_red_mask, orb2_green_mask, orb2_blue_mask }
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}; |
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// *********** |
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// ** Types ** |
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// *********** |
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struct pwm_channel |
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{
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uint8_t time; |
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uint8_t mask; |
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}; |
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// *************** |
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// ** Variables ** |
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// *************** |
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struct pwm_channel channels[NUM_ORBS*NUM_COLORS]; |
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// ******************** |
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// ** Initialization ** |
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// ******************** |
| ... | ... | |
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// Set all orbs to "off" |
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orb_set (0, 0, 0); |
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// Set up the timer |
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// Prescaler 8 is 66 ms or 15 Hz (8 MHz/prescaler 8/2^16) |
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TCCR3A=0; |
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TCCR3B=_BV(CS31); // Prescaler 8 |
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TCCR3B=_BV(CS31) | _BV(CS30); // Prescaler 64 |
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TCCR3C=0; |
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ETIMSK |= _BV(TOIE3) | _BV(OCIE3C); // Enable Overflow Interrupt and Output compare 3 interrupt |
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// Clear Timer on Compare match: |
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// Either from OCR3A (WGM3 3:0=4) or from ICR3 (WGM3 3:0=12 |
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TCCR3B |= _BV(WGM33); |
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ICR3=511; |
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OCR3C=127; |
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// Debug |
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DDRF=2; |
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// uint16_t i; |
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// uint8_t mysreg; |
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// |
| ... | ... | |
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} |
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// |
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// **************** |
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// ** Timer ISRs ** |
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// **************** |
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volatile uint8_t x; |
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SIGNAL (SIG_OVERFLOW3) |
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{
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// Overflow: set debug pin |
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PORTF=2; |
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orb1_set (1,0,0); |
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orb2_set (1,0,0); |
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x=0; |
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OCR3C=64<<1; |
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} |
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SIGNAL (SIG_OUTPUT_COMPARE3C) |
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{
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// First match: clear debug pin |
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// Second match: spike on debug pin |
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if (x==0) |
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{
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PORTF=0; |
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x=1; |
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orb1_set (0,0,0); |
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OCR3C=192<<1; |
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} |
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else if (x==1) |
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{
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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PORTF=2; PORTF=0; |
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x=2; |
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orb2_set (0,0,0); |
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} |
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} |
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// ************************ |
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// ** Setting RGB colors ** |
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// ************************ |
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