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/*
* fsm-misc.c: Miscellaneous function for SpaghettiMonster.
*
* Copyright (C) 2017 Selene ToyKeeper
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FSM_MISC_C
#define FSM_MISC_C
#ifdef USE_DYNAMIC_UNDERCLOCKING
void auto_clock_speed() {
uint8_t level = actual_level; // volatile, avoid repeat access
if (level < QUARTERSPEED_LEVEL) {
// run at quarter speed
// note: this only works when executed as two consecutive instructions
// (don't try to combine them or put other stuff between)
clock_prescale_set(clock_div_4);
}
else if (level < HALFSPEED_LEVEL) {
// run at half speed
clock_prescale_set(clock_div_2);
} else {
// run at full speed
clock_prescale_set(clock_div_1);
}
}
#endif
#if defined(USE_BLINK_NUM) || defined(USE_BLINK_DIGIT)
#define BLINK_SPEED 1000
uint8_t blink_digit(uint8_t num) {
//StatePtr old_state = current_state;
// "zero" digit gets a single short blink
uint8_t ontime = BLINK_SPEED * 2 / 12;
if (!num) { ontime = 8; num ++; }
for (; num>0; num--) {
set_level(BLINK_BRIGHTNESS);
nice_delay_ms(ontime);
set_level(0);
nice_delay_ms(BLINK_SPEED * 3 / 12);
}
return nice_delay_ms(BLINK_SPEED * 8 / 12);
}
#endif
#ifdef USE_BLINK_BIG_NUM
uint8_t blink_big_num(uint16_t num) {
uint16_t digits[] = { 10000, 1000, 100, 10, 1 };
uint8_t started = 0;
for (uint8_t digit=0; digit<sizeof(digits)/sizeof(uint16_t); digit++) {
uint16_t scale = digits[digit];
if (num >= scale) {
started = 1;
}
if (started) {
uint8_t digit = 0;
while (num >= scale) {
num -= scale;
digit ++;
}
if (! blink_digit(digit)) return 0;
}
}
return nice_delay_ms(1000);
}
#endif
#ifdef USE_BLINK_NUM
uint8_t blink_num(uint8_t num) {
#if 1
uint8_t hundreds = num / 100;
num = num % 100;
uint8_t tens = num / 10;
num = num % 10;
#else // can be smaller or larger, depending on whether divmod is used elsewhere
uint8_t hundreds = 0;
uint8_t tens = 0;
for(; num >= 100; hundreds ++, num -= 100);
for(; num >= 10; tens ++, num -= 10);
#endif
#if 0
// wait a moment in the dark before starting
set_level(0);
nice_delay_ms(200);
#endif
if (hundreds) blink_digit(hundreds);
if (hundreds || tens) blink_digit(tens);
return blink_digit(num);
}
#endif
#ifdef USE_INDICATOR_LED
void indicator_led(uint8_t lvl) {
switch (lvl) {
#ifdef AVRXMEGA3 // ATTINY816, 817, etc
case 0: // indicator off
AUXLED_PORT.DIRSET = (1 << AUXLED_PIN); // set as output
AUXLED_PORT.OUTCLR = (1 << AUXLED_PIN); // set output low
#ifdef AUXLED2_PIN // second LED mirrors the first
AUXLED2_PORT.DIRSET = (1 << AUXLED2_PIN); // set as output
AUXLED2_PORT.OUTCLR = (1 << AUXLED2_PIN); // set output low
#endif
break;
case 1: // indicator low
AUXLED_PORT.DIRCLR = (1 << AUXLED_PIN); // set as input
// this resolves to PORTx.PINxCTRL = PORT_PULLUPEN_bm;
*((uint8_t *)&AUXLED_PORT + 0x10 + AUXLED_PIN) = PORT_PULLUPEN_bm; // enable internal pull-up
#ifdef AUXLED2_PIN // second LED mirrors the first
AUXLED2_PORT.DIRCLR = (1 << AUXLED2_PIN); // set as input
// this resolves to PORTx.PINxCTRL = PORT_PULLUPEN_bm;
*((uint8_t *)&AUXLED2_PORT + 0x10 + AUXLED2_PIN) = PORT_PULLUPEN_bm; // enable internal pull-up
#endif
break;
default: // indicator high
AUXLED_PORT.DIRSET = (1 << AUXLED_PIN); // set as output
AUXLED_PORT.OUTSET = (1 << AUXLED_PIN); // set as high
#ifdef AUXLED2_PIN // second LED mirrors the first
AUXLED2_PORT.DIRSET = (1 << AUXLED2_PIN); // set as output
AUXLED2_PORT.OUTSET = (1 << AUXLED2_PIN); // set as high
#endif
break;
#else // MCU is old tiny style, not newer mega style
case 0: // indicator off
DDRB &= 0xff ^ (1 << AUXLED_PIN);
PORTB &= 0xff ^ (1 << AUXLED_PIN);
#ifdef AUXLED2_PIN // second LED mirrors the first
DDRB &= 0xff ^ (1 << AUXLED2_PIN);
PORTB &= 0xff ^ (1 << AUXLED2_PIN);
#endif
break;
case 1: // indicator low
DDRB &= 0xff ^ (1 << AUXLED_PIN);
PORTB |= (1 << AUXLED_PIN);
#ifdef AUXLED2_PIN // second LED mirrors the first
DDRB &= 0xff ^ (1 << AUXLED2_PIN);
PORTB |= (1 << AUXLED2_PIN);
#endif
break;
default: // indicator high
DDRB |= (1 << AUXLED_PIN);
PORTB |= (1 << AUXLED_PIN);
#ifdef AUXLED2_PIN // second LED mirrors the first
DDRB |= (1 << AUXLED2_PIN);
PORTB |= (1 << AUXLED2_PIN);
#endif
break;
#endif // MCU type
}
}
/*
void indicator_led_auto() {
if (actual_level > MAX_1x7135) indicator_led(2);
else if (actual_level > 0) indicator_led(1);
else indicator_led(0);
}
*/
#endif // USE_INDICATOR_LED
#ifdef USE_BUTTON_LED
// TODO: Refactor this and RGB LED function to merge code and save space
void button_led_set(uint8_t lvl) {
switch (lvl) {
#ifdef AVRXMEGA3 // ATTINY816, 817, etc
case 0: // LED off
BUTTON_LED_PORT.DIRSET = (1 << BUTTON_LED_PIN); // set as output
BUTTON_LED_PORT.OUTCLR = (1 << BUTTON_LED_PIN); // set output low
break;
case 1: // LED low
BUTTON_LED_PORT.DIRCLR = (1 << BUTTON_LED_PIN); // set as input
// this resolves to PORTx.PINxCTRL = PORT_PULLUPEN_bm;
*((uint8_t *)&BUTTON_LED_PORT + 0x10 + BUTTON_LED_PIN) = PORT_PULLUPEN_bm; // enable internal pull-up
break;
default: // LED high
BUTTON_LED_PORT.DIRSET = (1 << BUTTON_LED_PIN); // set as output
BUTTON_LED_PORT.OUTSET = (1 << BUTTON_LED_PIN); // set as high
break;
#else
case 0: // LED off
BUTTON_LED_DDR &= 0xff ^ (1 << BUTTON_LED_PIN);
BUTTON_LED_PUE &= 0xff ^ (1 << BUTTON_LED_PIN);
BUTTON_LED_PORT &= 0xff ^ (1 << BUTTON_LED_PIN);
break;
case 1: // LED low
BUTTON_LED_DDR &= 0xff ^ (1 << BUTTON_LED_PIN);
BUTTON_LED_PUE |= (1 << BUTTON_LED_PIN);
BUTTON_LED_PORT |= (1 << BUTTON_LED_PIN);
break;
default: // LED high
BUTTON_LED_DDR |= (1 << BUTTON_LED_PIN);
BUTTON_LED_PUE |= (1 << BUTTON_LED_PIN);
BUTTON_LED_PORT |= (1 << BUTTON_LED_PIN);
break;
#endif // MCU type
}
}
#endif
#ifdef USE_AUX_RGB_LEDS
void rgb_led_set(uint8_t value) {
// value: 0b00BBGGRR
uint8_t pins[] = { AUXLED_R_PIN, AUXLED_G_PIN, AUXLED_B_PIN };
for (uint8_t i=0; i<3; i++) {
uint8_t lvl = (value >> (i<<1)) & 0x03;
uint8_t pin = pins[i];
switch (lvl) {
#ifdef AVRXMEGA3 // ATTINY816, 817, etc
case 0: // LED off
AUXLED_RGB_PORT.DIRSET = (1 << pin); // set as output
AUXLED_RGB_PORT.OUTCLR = (1 << pin); // set output low
break;
case 1: // LED low
AUXLED_RGB_PORT.DIRCLR = (1 << pin); // set as input
// this resolves to PORTx.PINxCTRL = PORT_PULLUPEN_bm;
*((uint8_t *)&AUXLED_RGB_PORT + 0x10 + pin) = PORT_PULLUPEN_bm; // enable internal pull-up
break;
default: // LED high
AUXLED_RGB_PORT.DIRSET = (1 << pin); // set as output
AUXLED_RGB_PORT.OUTSET = (1 << pin); // set as high
break;
#else
case 0: // LED off
AUXLED_RGB_DDR &= 0xff ^ (1 << pin);
AUXLED_RGB_PUE &= 0xff ^ (1 << pin);
AUXLED_RGB_PORT &= 0xff ^ (1 << pin);
break;
case 1: // LED low
AUXLED_RGB_DDR &= 0xff ^ (1 << pin);
AUXLED_RGB_PUE |= (1 << pin);
AUXLED_RGB_PORT |= (1 << pin);
break;
default: // LED high
AUXLED_RGB_DDR |= (1 << pin);
AUXLED_RGB_PUE |= (1 << pin);
AUXLED_RGB_PORT |= (1 << pin);
break;
#endif // MCU type
}
}
}
#endif // ifdef USE_AUX_RGB_LEDS
#ifdef USE_TRIANGLE_WAVE
uint8_t triangle_wave(uint8_t phase) {
uint8_t result = phase << 1;
if (phase > 127) result = 255 - result;
return result;
}
#endif
#ifdef USE_REBOOT
void reboot() {
// put the WDT in hard reset mode, then trigger it
cli();
#if (ATTINY == 25) || (ATTINY == 45) || (ATTINY == 85)
WDTCR = 0xD8 | WDTO_15MS;
#elif (ATTINY == 1634)
// allow protected configuration changes for next 4 clock cycles
CCP = 0xD8; // magic number
// reset (WDIF + WDE), no WDIE, fastest (16ms) timing (0000)
// (DS section 8.5.2 and table 8-4)
WDTCSR = 0b10001000;
#elif defined(AVRXMEGA3) // ATTINY816, 817, etc
CCP = CCP_IOREG_gc; // temporarily disable change protection
WDT.CTRLA = WDT_PERIOD_8CLK_gc; // Enable, timeout 8ms
#endif
sei();
wdt_reset();
while (1) {}
}
#endif
#endif
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