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* ====================================================================
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* Ramping UI for nanjg105c and a clicky switch by gChart (Gabriel Hart)
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* This firmware has its roots loosely based on "Biscotti" by ToyKeeper
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* ====================================================================
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* 12 or more fast presses > Configuration mode
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* 2: Stop-at-the-top toggle (without any user interaction, stops itself at turbo)
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* 3: Turbo Timer Toggle (turbo steps down to 50%)
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* 4: Reset to default configuration
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* ====================================================================
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* "Biscotti" firmware (attiny13a version of "Bistro")
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* This code runs on a single-channel driver with attiny13a MCU.
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* It is intended specifically for nanjg 105d drivers from Convoy.
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* Copyright (C) 2015 Selene Scriven
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* GND -|4 5|- PWM (Nx7135)
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* I use these fuse settings on attiny13
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* To find out what values to use, flash the driver with battcheck.hex
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* and hook the light up to each voltage you need a value for. This is
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* much more reliable than attempting to calculate the values from a
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* theoretical formula.
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* Same for off-time capacitor values. Measure, don't guess.
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// Choose your MCU here, or in the build script
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#define NANJG_LAYOUT // specify an I/O pin layout
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// Also, assign I/O pins in this file:
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#include "../tk-attiny.h"
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#define DEFAULTS 0b00000100 // No memory, doesn't stop at the top, turbo timer is enabled
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#define FAST 0xA3 // fast PWM both channels
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#define PHASE 0xA1 // phase-correct PWM both channels
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#define VOLTAGE_MON // Comment out to disable LVP
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#define BLINK_BRIGHTNESS 40 // output to use for blinks in config mode
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#define BLINK_SPEED 750 // ms per normal-speed blink
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#define USE_BATTCHECK // Enable battery check mode
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#define BATTCHECK_8bars // up to 8 blinks
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#define TURBO_MINUTES 5 // when turbo timer is enabled, how long before stepping down
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#define TICKS_PER_MINUTE 120 // used for Turbo Timer timing
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#define TURBO_LOWER 128 // the PWM level to use when stepping down
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#define TURBO_THRESHOLD sizeof(ramp_values)-5 // Min output level that we consider to be turbo?
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#define RAMP_TIME 5 // number of seconds to go from min brightness to max brightness
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#define RAMP_SIZE sizeof(ramp_values)
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//#define RAMP_VALUES 1,1,1,1,1,2,2,2,2,3,3,4,5,5,6,7,8,9,10,11,13,14,16,18,20,22,24,26,29,32,34,38,41,44,48,51,55,60,64,68,73,78,84,89,95,101,107,113,120,127,134,142,150,158,166,175,184,193,202,212,222,233,244,255
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#define RAMP_VALUES 5,5,5,5,5,6,6,6,6,7,7,8,8,9,10,11,12,13,14,15,17,18,20,22,23,25,28,30,32,35,38,41,44,47,51,55,59,63,67,71,76,81,86,92,97,103,109,116,122,129,136,144,151,159,167,176,185,194,203,213,223,233,244,255
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// Calibrate voltage and OTC in this file:
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#include "../tk-calibration.h"
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* =========================================================================
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// Ignore a spurious warning, we did the cast on purpose
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#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <avr/eeprom.h>
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#include <avr/sleep.h>
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#define OWN_DELAY // Don't use stock delay functions.
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#define USE_DELAY_MS // use _delay_ms()
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#define USE_DELAY_S // Also use _delay_s(), not just _delay_ms()
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#include "../tk-delay.h"
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#include "../tk-voltage.h"
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register uint8_t options asm("r6");
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register uint8_t eepos asm("r7");
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#define NUM_FP_BYTES 3
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uint8_t fast_presses[NUM_FP_BYTES] __attribute__ ((section (".noinit")));
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#define RAMPING_DOWN 1
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uint8_t ramp_direction __attribute__ ((section (".noinit")));
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uint8_t ramp_stopped __attribute__ ((section (".noinit")));
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uint8_t output __attribute__ ((section (".noinit")));
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uint8_t output_in_eeprom;
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PROGMEM const uint8_t ramp_values[] = { RAMP_VALUES };
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inline uint8_t memory_is_enabled() { return (options ) & 0b00000001; }
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inline uint8_t stop_at_the_top() { return (options >> 1) & 0b00000001; }
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inline uint8_t ttimer_is_enabled() { return (options >> 2) & 0b00000001; }
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void save_output() { // save the current output level (with wear leveling)
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uint8_t oldpos=eepos;
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eepos = (eepos+1) & ((EEPSIZE/2)-1); // wear leveling, use next cell
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eeprom_write_byte((uint8_t *)(eepos), output); // save current state
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eeprom_write_byte((uint8_t *)(oldpos), 0xff); // erase old state
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#define OPT_options (EEPSIZE-1)
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void save_state() { // central method for writing complete state
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eeprom_write_byte((uint8_t *)OPT_options, options);
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inline void reset_state() {
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output_in_eeprom = 1;
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options = DEFAULTS; // 3 brightness levels with memory
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inline void restore_state() {
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// find the output level data
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for(i=0; i<(EEPSIZE-6); i++) {
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eep = eeprom_read_byte((const uint8_t *)i);
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output_in_eeprom = eep;
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// if no output level was found, assume this is the first boot
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// load other config values
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options = eeprom_read_byte((uint8_t *)OPT_options);
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void set_pwm(uint8_t pwm) {
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void set_level(uint8_t level) {
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if (level == 0) { set_pwm(0); }
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else { set_pwm( pgm_read_byte(ramp_values + level - 1) ); }
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void blink(uint8_t val, uint16_t speed)
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set_pwm(BLINK_BRIGHTNESS);
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void toggle_options(uint8_t value, uint8_t num) {
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blink(num, BLINK_SPEED/4); // indicate which option number this is
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uint8_t temp = options;
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blink(32, 500/32); // "buzz" for a while to indicate the active toggle window
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// if the user didn't click, reset the value and return
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inline uint8_t we_did_a_fast_press() {
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uint8_t i = NUM_FP_BYTES-1;
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while (i && (fast_presses[i] == fast_presses[i-1] )){ --i; }
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inline void increment_fast_presses() {
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for(i=0; i<NUM_FP_BYTES; i++) { fast_presses[i]++; }
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void reset_fast_presses() {
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for(i=0; i<NUM_FP_BYTES; i++) { fast_presses[i] = 0; }
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DDRB |= (1 << PWM_PIN); // Set PWM pin to output, enable main channel
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restore_state(); // Read config values and saved state
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if ( we_did_a_fast_press() ) {
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increment_fast_presses();
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ramp_stopped = !ramp_stopped;
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if(fast_presses[0] == 2) { // jump to turbo on a double-tap from anywhere
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if(ramp_stopped) { save_output(); }
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} else { // Long press
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reset_fast_presses();
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ramp_direction = RAMPING_UP;
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if( memory_is_enabled() ) {
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output = output_in_eeprom;
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uint8_t lowbatt_cnt = 0;
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ADCSRA |= (1 << ADSC); // Make sure voltage reading is running for later
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if (fast_presses[0] >= 12) { // Config mode if 12 or more fast presses
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_delay_s(); // wait for user to stop fast-pressing button
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reset_fast_presses(); // exit this mode after one use
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toggle_options((options ^ 0b00000001), 1); // memory
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toggle_options((options ^ 0b00000010), 2); // stop at the top
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toggle_options((options ^ 0b00000100), 3); // turbo timer
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toggle_options(DEFAULTS, 4); // reset to defaults
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else if (fast_presses[0] == 3) {
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//else if (output == BATT_CHECK) {
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blink(battcheck(), BLINK_SPEED/4);
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_delay_s(); _delay_s();
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// shouldn't need to worry about resetting fast_presses here, but may need to later
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else if ( !ramp_stopped ) {
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if(output == 1 || output == RAMP_SIZE) { _delay_s(); } // pause for a second at the lowest & highest levels
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if( (ramp_direction == RAMPING_DOWN && output == 1) || (ramp_direction == RAMPING_UP && output == RAMP_SIZE) ) {
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ramp_direction = !ramp_direction;
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if( output == RAMP_SIZE && stop_at_the_top() ) {
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if(ramp_direction == RAMPING_UP) { output++; }
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_delay_ms(RAMP_TIME*1000/RAMP_SIZE);
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// if we've been ramping around for more than half a second, reset the fast_presses
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ticks = ticks + (RAMP_TIME*1000/RAMP_SIZE);
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reset_fast_presses();
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if ((output >= TURBO_THRESHOLD) && ( ttimer_is_enabled() ) && (ticks > (TURBO_MINUTES * TICKS_PER_MINUTE))) {
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set_pwm(TURBO_LOWER);
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ticks ++; // count ticks for turbo timer
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_delay_ms(500); // Otherwise, just sleep.
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reset_fast_presses();
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if (ADCSRA & (1 << ADIF)) { // if a voltage reading is ready
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voltage = ADCH; // get the waiting value
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if (voltage < ADC_LOW) { // See if voltage is lower than what we were looking for
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if (lowbatt_cnt >= 8) { // See if it's been low for a while, and maybe step down
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if (output > 1) { // not yet at the lowest level
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output = (output>>1); // divide output in half using bitwise operators
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} else { // Can't go any lower
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set_pwm(0); // Turn off the light
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set_sleep_mode(SLEEP_MODE_PWR_DOWN); // Power down as many components as possible
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_delay_s(); // Wait before lowering the level again
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ADCSRA |= (1 << ADSC); // Make sure conversion is running for next time through
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#endif // ifdef VOLTAGE_MON
added
removed
gchart/ramping-ui/ramping_ui.c
