X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=main.c;h=6eaf3d77159fdcfe566e85dbf2f7b2ec06a77aa1;hb=HEAD;hp=7fa14f2fab32eb238dd7f46eefd16f91731e43d6;hpb=e9763e77e5192ca658d54f346d1a046ec227be2c;p=rgblamp.git diff --git a/main.c b/main.c index 7fa14f2..6eaf3d7 100644 --- a/main.c +++ b/main.c @@ -1,159 +1,510 @@ /* - * File: main.c + * Copyright © 2011, 2012, Titanium Mirror, Inc.. + * All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - Neither the name of Titanium Mirror, Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. * - * Created on August 16, 2010, 12:09 PM + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, + * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +/* + * File: main.c + * + * PWM test program + * + * PIC resources in use, 28-pin DIP, by pin: + * - ( 1) RE3 - Vpp/MCLR# + * - ( 2) RA0 - unused + * - ( 3) RA1 - unused + * - ( 4) RA2 - unused + * - ( 5) RA3 - unused + * - ( 6) RA4 - unused (could become PGM/LVP, but apparently not needed) + * - ( 7) RA5 - unused + * - ( 8) Vss + * - ( 9) RA7 - unused + * - (10) RA6 - unused + * - (11) RC0 - T1OSO + * - (12) RC1 - T1OSI + * - (13) RC2 - CCP1 PWM for wht LED + * - (14) RC3 - unused + * - (15) RC4 - unused + * - (16) RC5 - unused + * - (17) RC6 - unused + * - (18) RC7 - unused + * - (19) Vss + * - (20) Vdd + * - (21) RB0 - CCP4 PWM for blu LED + * - (22) RB1 - Pushbutton + * - (23) RB2 - Rocker switch, right + * - (24) RB3 - CCP2 PWM for grn LED + * - (25) RB4 - Rocker switch, left + * - (26) RB5 - CCP3 PWM for red LED + * - (27) RB6 - ICSPCLK + * - (28) RB7 - ICSPDAT + */ #include -//#include - -#define RUNAT32MHZ /* else 16 MHz */ -#define LEDBIT 0x01 /* Port RB0 */ -#define RED_CHAN 1 -#define GRN_CHAN 2 -#define BLU_CHAN 4 -#define WHT_CHAN 8 -#define ALL_CHAN 15 - -#if defined(RUNAT32MHZ) -__CONFIG(WDTE_OFF & FOSC_INTOSC); -__CONFIG(LVP_OFF & PLLEN_ON); -#else -__CONFIG(WDTE_OFF); -__CONFIG(LVP_OFF); -#endif +#include +#include "picinit.h" +#include "unused.h" +#include "lfsr.h" +#include "btn.h" +#include "rgb.h" +#include "tmr.h" +#include "tmr32.h" +#include "task.h" +#include "adc_random.h" + +#define AUTO_OFF_COUNT 9000U /* 5 hrs in 2 sec units */ +#define AUTO_ON_COUNT 34200U /* 19 hrs in 2 sec units */ +#define dbgpin_init() do { \ + /* Set RA2 as output low */ \ + RA2 = 0; \ + TRISA2 = 0; \ + } while (0) +#define dbgpin_high() (RA2 = 1) +#define dbgpin_low() (RA2 = 0) +#define dbgpin_toggle() (RA2 = (LATA2 == 0) ? 1 : 0) -void pic_init() +enum { + /* Operating modes */ + MODE_SOLID = 0, /* Cycle through colors[][] before next mode */ + MODE_CYCLE, /* Auto cycle through colors */ + MODE_PARTY, /* Random yet fast incolor and fade */ + MODE_COUNT, + + /* Indexes in colors[][] for LEDs */ + LED_RED = 0, + LED_GRN, + LED_BLU, + LED_WHT, + LED_COUNT, + + HELD_TMR_PERIODS = 1, /* Held timer fires every 32.768 msec */ + HELD_PERIODS = 16, /* Held this long before held events fire */ + COLOR_COUNT = 12, + COLOR_CANDLE = 0, /* Color index for the candle color */ + COLOR_WHITE = 11, /* Color index for white */ + BRIGHT_TOP = 100, /* Bright ramps up to top ... */ + BRIGHT_BOTTOM = -5, /* ... then down to bottom */ + BRIGHT_MAX = 85, /* Bright values are constrained for computations */ + BRIGHT_MIN = 1, /* ... by min and max. */ + BRIGHT_INIT = 42, /* Initial value is replaced by value from eeprom */ + CBRIGHT_VARIANCE = 20, /* Brightness range for candle flicker */ + STD_FADE = 16, /* Fade time in 32.768 ms units */ + STD_INCOLOR = 29491, /* Time in color when MODE_CYCLE, in 32.768 ms units */ + PARTY_MIN = 8, /* Min party fade and incolor units */ + PARTY_RANGE = 8, /* Party fade/incolor range mask for lfsr_get() */ + /* ... see start_fade() */ + CFG_ADDR = 0, /* EEPROM address of start of configuration */ + CFG_DELAY = 183, /* 6 seconds in 32.768 msec units */ +}; + +typedef struct { + int value; + int increment; + signed char remainder; +} led_t; + +/* Offsets to brightness used for candle color */ +const signed char offsets[4] = { -1, -1, 1, 1 }; + +/* Available colors, 6 bits per color (no values above 0x3f) */ +const unsigned char colors[COLOR_COUNT][LED_COUNT] = { + { 0x2c, 0x20, 0x00, 0x18 }, /* candle */ + { 0x28, 0x00, 0x00, 0x00 }, /* red */ + { 0x30, 0x20, 0x00, 0x00 }, /* orange */ + { 0x2c, 0x2c, 0x00, 0x00 }, /* yellow */ + { 0x20, 0x2c, 0x00, 0x00 }, /* yellow-green */ + { 0x00, 0x30, 0x00, 0x00 }, /* green */ + { 0x00, 0x30, 0x18, 0x00 }, /* green-cyan */ + { 0x00, 0x30, 0x28, 0x00 }, /* cyan */ + { 0x00, 0x18, 0x30, 0x00 }, /* cyan-blue */ + { 0x00, 0x00, 0x30, 0x00 }, /* blue */ + { 0x1c, 0x00, 0x30, 0x00 }, /* magenta */ + { 0x3f, 0x3f, 0x3f, 0x3f }, /* white */ +}; + +unsigned char mode = MODE_SOLID; +unsigned char color = COLOR_CANDLE; +signed char bright = BRIGHT_INIT; +bit bright_up; +led_t red; +led_t grn; +led_t blu; +led_t wht; +bit on; +int fade_steps; +signed char pbHeldCount; +signed char cbright; + +void cfg_write() { -#if defined(RUNAT32MHZ) - OSCCON = 0b11110000; -#else /* 16 MHz */ - OSCCON = 0b01111010; -#endif + unsigned char addr = CFG_ADDR; + unsigned char m, c; + signed char b; - /* OSCSTAT.HFIOFL is set when oscillator is locked (accurate within 2%) */ - while (!HFIOFL); + m = eeprom_read(addr++); + c = eeprom_read(addr++); + b = eeprom_read(addr); + if (mode != m || color != c || bright != b) { + addr = CFG_ADDR; + eeprom_write(addr++, mode); + eeprom_write(addr++, color); + eeprom_write(addr, bright); + } } -void pwm_init() +void cfg_read() { - /* Initialize PWM - * CCP1 on RB3, CCP2 on RA7, CCP3 on RA3, CCP4 on RA4 - * - Fosc = 32MHz - * - Prescale = 16 - * - PRx value = 0xff - * = f(pwm) = 1.95 kHz - */ + unsigned char addr = CFG_ADDR; + unsigned char tmp; + + tmp = eeprom_read(addr++); + if (tmp < MODE_COUNT) + mode = tmp; + + tmp = eeprom_read(addr++); + if (tmp < COLOR_COUNT) + color = tmp; + + tmp = eeprom_read(addr); + if ((signed char)tmp >= BRIGHT_BOTTOM && (signed char)tmp <= BRIGHT_TOP) + bright = tmp; +} + +/* Combine LED color value and brightness level to generate an RGB value. + * bright will be BRIGHT_MIN...BRIGHT_MAX + * + * @param value 0...1023 (6 bit color, left shifted 4 bits, for 10 bits) + * @param b brightness value BRIGHT_MIN...BRIGHT_MAX + * @return An RGB drive value, 0...255 + */ +unsigned char led_get(int value, signed char b) +{ + return (unsigned long)value * b / 4 / BRIGHT_MAX; +} + +/* Set the LEDs using color values and current brightness. */ +void leds_set() +{ + signed char b; - /* Disable output on PWM Rxn pins */ - TRISA |= 0b10011000; - TRISB |= 0b00001000; + /* Use correct brightness value, then constrain it */ + if (mode != MODE_PARTY && color != COLOR_WHITE) + b = cbright; + else + b = bright; + if (b > BRIGHT_MAX) + b = BRIGHT_MAX; + else if (b < BRIGHT_MIN) + b = BRIGHT_MIN; - /* Configure ECCP1 */ - CCP1CON = 0b00001100; - CCPR1L = 0; /* Initial PWM value; only using 8 LSBs */ + rgb_set(led_get((red).value, b), led_get((grn).value, b), + led_get((blu).value, b), led_get((wht).value, b)); +} - /* Configure ECCP2 */ - APFCON0 |= 0b00001000; /* Use alternate output pin RA7 */ - CCP2CON = 0b00001100; - CCPR2L = 0; /* Initial PWM value; only using 8 LSBs */ +void start_fade() +{ + /* RGB PWM values are 8 bits. Color values are 12 bits. See led_get() + * for the conversion of color values and brightness to RGB values. + */ + int newr, newg, newb, neww; - /* Configure CCP3 */ - CCP3CON = 0b00001100; - CCPR3L = 0; /* Initial PWM value; only using 8 LSBs */ + /* Select the destination color and fade-to time depending upon mode. */ + fade_steps = STD_FADE; + if (mode == MODE_PARTY) { + color = lfsr_get() % COLOR_COUNT; + fade_steps = PARTY_MIN + (lfsr_get() % PARTY_RANGE); + } else if (mode == MODE_CYCLE) { + if (++color == COLOR_COUNT) + color = 0; + } - /* Configure CCP4 */ - CCP4CON = 0b00001100; - CCPR4L = 0; /* Initial PWM value; only using 8 LSBs */ + /* Retrieve the destination color */ + newr = colors[color][LED_RED] << 4; + newg = colors[color][LED_GRN] << 4; + newb = colors[color][LED_BLU] << 4; + neww = colors[color][LED_WHT] << 4; - /* Configure Timer2 */ - CCPTMRS = 0; /* All CCPx use Timer 2 */ - TMR2IF = 0; - PR2 = 0xff; - T2CON = 0b00000111; + /* Compute increment per fade step, and remainder, for each led */ + red.increment = (newr - red.value) / fade_steps; + red.remainder = newr - (red.value + red.increment * fade_steps); + grn.increment = (newg - grn.value) / fade_steps; + grn.remainder = newg - (grn.value + grn.increment * fade_steps); + blu.increment = (newb - blu.value) / fade_steps; + blu.remainder = newb - (blu.value + blu.increment * fade_steps); + wht.increment = (neww - wht.value) / fade_steps; + wht.remainder = neww - (wht.value + wht.increment * fade_steps); - /* Enable PWM outputs after Timer 2 overflows */ - while (!TMR2IF); - TRISA &= ~0b10011000; - TRISB &= ~0b00001000; + /* Start the fade timer */ + tmr_stop(TMR_CANDLE); + tmr_stop(TMR_INCOLOR); + tmr_startPeriodic(TMR_FADE, 1); /* 32.768 msec */ } -void led_init() +void turnOn() { - PORTB &= ~LEDBIT; /* Led is RB0 */ - TRISB &= ~LEDBIT; + dbgpin_high(); + on = 1; + rgb_on(); + start_fade(); + btn_pben(); } -void led_set(unsigned char led) +/* Event on to off, either by switch or auto-off timer */ +void turnOff() { - if (led) - PORTB |= LEDBIT; + tmr_stop(TMR_CFG); + tmr_stop(TMR_CANDLE); + tmr_stop(TMR_INCOLOR); + tmr_stop(TMR_FADE); + rgb_off(); + red.value = grn.value = blu.value = wht.value = 0; + on = 0; + dbgpin_low(); + SLEEP(); +} + +void pb_clicked() +{ + if (on) { + if (mode == MODE_SOLID) { + if (++color == COLOR_COUNT) { + color = 0; + if (++mode == MODE_COUNT) + mode = 0; + } + } else if (++mode == MODE_COUNT) { + mode = 0; + color = 0; + } + tmr_start(TMR_CFG, CFG_DELAY); + start_fade(); + } +} + +/* The button is being held. Change the color magnitude. */ +void pb_held() +{ + if (bright_up) { + if (bright == BRIGHT_TOP) + bright_up = 0; + else + bright++; + } else { + if (bright == BRIGHT_BOTTOM) + bright_up = 1; else - PORTB &= ~LEDBIT; + bright--; + } + tmr_start(TMR_CFG, CFG_DELAY); + leds_set(); +} + +void pb_held_task() +{ + pbHeldCount++; + if (pbHeldCount >= 0) { + pbHeldCount = 0; + pb_held(); + } } -void pwm_set(unsigned char channels, unsigned char step) +void pb_task() { - if (channels & RED_CHAN) - CCPR1L = step; - if (channels & GRN_CHAN) - CCPR2L = step; - if (channels & BLU_CHAN) - CCPR3L = step; - if (channels & WHT_CHAN) - CCPR4L = step; + static unsigned char pbPrev = BTN_PB_UP; + unsigned char pb; + + pb = btn_pb(); + if (pbPrev == BTN_PB_UP) { + if (pb == BTN_PB_UP) + pb_clicked(); + else /* (pb == BTN_PB_DOWN) */ { + tmr_startPeriodic(TMR_BTN_PB_HELD, HELD_TMR_PERIODS); + pbHeldCount = -HELD_PERIODS; + } + } else /* if (pbPrev == BTN_PB_DOWN) */ { + if (pb == BTN_PB_UP) { + tmr_stop(TMR_BTN_PB_HELD); + if (pbHeldCount < 0) + pb_clicked(); + } /* nothing to do if button is down */ + } + pbPrev = pb; + btn_pben(); } -void delay() +void rs_task() { - for (unsigned counter = 0; counter < 10000; counter++); + btn_rsen(); + switch (btn_rs()) { + case BTN_RS_OFF: + tmr32_set(0); + turnOff(); + break; + case BTN_RS_RIGHT: + tmr32_set(AUTO_OFF_COUNT); + /* fall through */ + case BTN_RS_LEFT: + turnOn(); + break; + } } -void ramp_up(unsigned char channels) +void candle_task() { - unsigned char step = 0; + /* Flicker by using the brightness value */ + cbright += offsets[lfsr_get() & 0x03]; + + /* Constraight cbright to a range about bright */ + if (cbright > bright) + cbright = bright; + else if (cbright < bright - CBRIGHT_VARIANCE) + cbright = bright - CBRIGHT_VARIANCE; - do { - pwm_set(channels, step++); - delay(); - } while (step != 0); + /* Adjust the LEDs */ + leds_set(); +} + +void fade_task() +{ + red.value += red.increment; + grn.value += grn.increment; + blu.value += blu.increment; + wht.value += wht.increment; + if (--fade_steps == 0) { + /* This is the last fade step. Finalize the RGB led states and decide how + * long to stay in this color. + */ + red.value += red.remainder; + grn.value += grn.remainder; + blu.value += blu.remainder; + wht.value += wht.remainder; + tmr_stop(TMR_CANDLE); + tmr_stop(TMR_FADE); + if (mode == MODE_PARTY) + tmr_start(TMR_INCOLOR, PARTY_MIN + (lfsr_get() % PARTY_RANGE)); + else { + if (mode == MODE_CYCLE) + tmr_start(TMR_INCOLOR, STD_INCOLOR); + if (color != COLOR_WHITE) { + cbright = bright - CBRIGHT_VARIANCE / 2; + tmr_startPeriodic(TMR_CANDLE, 1); + } + } + } + leds_set(); } -void ramp_down(unsigned char channels) +void auto_offon_task() { - unsigned char step = 255; + if (on) { + turnOff(); + if (btn_rs() == BTN_RS_RIGHT) + tmr32_set(AUTO_ON_COUNT); + } else /* off */ { + turnOn(); + if (btn_rs() == BTN_RS_RIGHT) + tmr32_set(AUTO_OFF_COUNT); + } +} - do { - pwm_set(channels, step--); - delay(); - } while (step != 255); +void user_boot() +{ + dbgpin_high(); + lfsr_init((adc_random() << 8) + adc_random()); + cfg_read(); + rs_task(); } -void ramp_up_down(unsigned char channels) +void user_tasks(unsigned char block) { - ramp_up(channels); - ramp_down(channels); + task_id_t tid; + + while ((tid = task_get(block)) >= 0) { + switch (tid) { + case TASK_BTN_PB: + pb_task(); + break; + case TASK_BTN_RS: + rs_task(); + break; + case TASK_BTN_PB_HELD: + pb_held_task(); + break; + case TASK_FADE: + fade_task(); + break; + case TASK_INCOLOR: + start_fade(); + break; + case TASK_CANDLE: + candle_task(); + break; + case TASK_TMR32: + auto_offon_task(); + break; + case TASK_CFG: + cfg_write(); + break; + } + } } int main(void) { - unsigned char fwd = 1; - unsigned char step = 0; - - pic_init(); - led_init(); - pwm_init(); - while (1) { - ramp_up(RED_CHAN); - ramp_up(GRN_CHAN); - ramp_down(RED_CHAN); - ramp_up(BLU_CHAN); - ramp_down(GRN_CHAN); - ramp_up(RED_CHAN); - ramp_up(GRN_CHAN + BLU_CHAN); - ramp_down(ALL_CHAN); - ramp_up_down(WHT_CHAN); - } - return 0; + /* Platform initialization */ + pic_init(); + unused_init(); + btn_init(); + rgb_init(); + tmr_init(); + tmr32_init(); + task_init(); + dbgpin_init(); + +#if 0 + /* Execute tasks until the queue empties */ + user_tasks(0); +#endif + +#if 0 + /* Software initialization */ +#endif + +#if 0 + /* Execute tasks until the queue empties */ + user_tasks(0); +#endif + + /* Run user boot code */ + user_boot(); + + /* Process tasks forever */ + user_tasks(1); + + /* Prevent return from main, which causes a device reset */ + while (1); } +