diff options
Diffstat (limited to 'spaghetti-monster')
| -rw-r--r-- | spaghetti-monster/anduril.c | 76 |
1 files changed, 70 insertions, 6 deletions
diff --git a/spaghetti-monster/anduril.c b/spaghetti-monster/anduril.c index 6eafb5d..9573705 100644 --- a/spaghetti-monster/anduril.c +++ b/spaghetti-monster/anduril.c @@ -32,6 +32,7 @@ #define MAX_CLICKS 6 #define USE_EEPROM #define EEPROM_BYTES 12 +#define USE_LIGHTNING_MODE #include "spaghetti-monster.h" // FSM states @@ -41,7 +42,11 @@ uint8_t steady_state(EventPtr event, uint16_t arg); uint8_t ramp_config_state(EventPtr event, uint16_t arg); // party and tactical strobes uint8_t strobe_state(EventPtr event, uint16_t arg); +#ifdef USE_LIGHTNING_MODE +#define NUM_STROBES 4 +#else #define NUM_STROBES 3 +#endif #ifdef USE_BATTCHECK uint8_t battcheck_state(EventPtr event, uint16_t arg); uint8_t tempcheck_state(EventPtr event, uint16_t arg); @@ -89,11 +94,16 @@ uint8_t target_level = 0; // strobe timing volatile uint8_t strobe_delays[] = { 40, 67 }; // party strobe, tactical strobe -volatile uint8_t strobe_type = 2; // 0 == party strobe, 1 == tactical strobe, 2 == bike flasher +volatile uint8_t strobe_type = 3; // 0 == party strobe, 1 == tactical strobe, 2 == lightning storm, 3 == bike flasher // bike mode config options volatile uint8_t bike_flasher_brightness = MAX_1x7135; +#ifdef USE_LIGHTNING_MODE +volatile uint8_t pseudo_rand_seed = 0; +uint8_t pseudo_rand(); +#endif + // beacon timing volatile uint8_t beacon_seconds = 2; @@ -334,7 +344,7 @@ uint8_t strobe_state(EventPtr event, uint16_t arg) { } } // biking mode brighter - else if (strobe_type == 2) { + else if (strobe_type == 3) { if (bike_flasher_brightness < MAX_LEVEL/2) bike_flasher_brightness ++; set_level(bike_flasher_brightness); @@ -350,7 +360,7 @@ uint8_t strobe_state(EventPtr event, uint16_t arg) { } } // biking mode dimmer - else if (strobe_type == 2) { + else if (strobe_type == 3) { if (bike_flasher_brightness > 1) bike_flasher_brightness --; set_level(bike_flasher_brightness); @@ -363,6 +373,13 @@ uint8_t strobe_state(EventPtr event, uint16_t arg) { save_config(); return MISCHIEF_MANAGED; } + #ifdef USE_LIGHTNING_MODE + // clock tick: bump the random seed + else if (event == EV_tick) { + pseudo_rand_seed += arg; + return MISCHIEF_MANAGED; + } + #endif return EVENT_NOT_HANDLED; } @@ -726,6 +743,17 @@ void blink_confirm(uint8_t num) { } +#ifdef USE_LIGHTNING_MODE +uint8_t pseudo_rand() { + static uint16_t offset = 1024; + // loop from 1024 to 4095 + offset = ((offset + 1) & 0x0fff) | 0x0400; + pseudo_rand_seed += 0b01010101; // 85 + return pgm_read_byte(offset) + pseudo_rand_seed; +} +#endif + + void load_config() { if (load_eeprom()) { ramp_style = eeprom[0]; @@ -734,7 +762,7 @@ void load_config() { ramp_discrete_floor = eeprom[3]; ramp_discrete_ceil = eeprom[4]; ramp_discrete_steps = eeprom[5]; - strobe_type = eeprom[6]; + strobe_type = eeprom[6]; // TODO: move this to eeprom_wl? strobe_delays[0] = eeprom[7]; strobe_delays[1] = eeprom[8]; bike_flasher_brightness = eeprom[9]; @@ -750,7 +778,7 @@ void save_config() { eeprom[3] = ramp_discrete_floor; eeprom[4] = ramp_discrete_ceil; eeprom[5] = ramp_discrete_steps; - eeprom[6] = strobe_type; + eeprom[6] = strobe_type; // TODO: move this to eeprom_wl? eeprom[7] = strobe_delays[0]; eeprom[8] = strobe_delays[1]; eeprom[9] = bike_flasher_brightness; @@ -817,8 +845,44 @@ void loop() { set_level(0); nice_delay_ms(strobe_delays[strobe_type]); } - // bike flasher + #ifdef USE_LIGHTNING_MODE + // lightning storm else if (strobe_type == 2) { + int16_t brightness; + uint16_t rand_time; + + // turn the emitter on at a random level, + // for a random amount of time between 1ms and 32ms + rand_time = 1 << (pseudo_rand() % 6); + brightness = 1 << (pseudo_rand() % 7); // 1, 2, 4, 8, 16, 32, 64 + brightness += 1 << (pseudo_rand()&0x03); // 2 to 80 now + brightness += pseudo_rand() % brightness; // 2 to 159 now (w/ low bias) + if (brightness > MAX_LEVEL) brightness = MAX_LEVEL; + set_level(brightness); + if (! nice_delay_ms(rand_time)) return; + + // decrease the brightness somewhat more gradually, like lightning + uint8_t stepdown = brightness >> 3; + if (stepdown < 1) stepdown = 1; + while(brightness > 1) { + if (! nice_delay_ms(rand_time)) return; + brightness -= stepdown; + if (brightness < 0) brightness = 0; + set_level(brightness); + } + + // turn the emitter off, + // for a random amount of time between 1ms and 8192ms + // (with a low bias) + rand_time = 1<<(pseudo_rand()%13); + rand_time += pseudo_rand()%rand_time; + set_level(0); + nice_delay_ms(rand_time); + + } + #endif + // bike flasher + else if (strobe_type == 3) { uint8_t burst = bike_flasher_brightness << 1; for(uint8_t i=0; i<4; i++) { set_level(burst); |