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// arch/attiny1634.h: attiny1634 support header
// Copyright (C) 2014-2023 Selene ToyKeeper
// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
// fill in missing values from Atmel's headers
#define PROGMEM_SIZE 16384
#define EEPROM_SIZE 256
////////// clock speed / delay stuff //////////
#define F_CPU 8000000UL
#define BOGOMIPS (F_CPU/4000)
#define DELAY_ZERO_TIME 1020
inline void mcu_clock_speed();
///// clock dividers
inline void clock_prescale_set(uint8_t n);
// TODO? allow hwdef to define a base clock speed,
// and adjust these values accordingly
typedef enum
{
// datasheet 6.5.2, CLKPR - Clock Prescale Register
clock_div_1 = 0, // 8 MHz
clock_div_2 = 1, // 4 MHz
clock_div_4 = 2, // 2 MHz
clock_div_8 = 3, // 1 MHz
clock_div_16 = 4, // 500 kHz
clock_div_32 = 5, // 250 kHz
clock_div_64 = 6, // 125 kHz
clock_div_128 = 7, // 62.5 kHz
clock_div_256 = 8, // 31.75 kHz
} clock_div_t;
////////// ADC voltage / temperature //////////
#define V_REF REFS1
//#define VOLTAGE_ADC_DIDR DIDR0 // set this in hwdef
// DS table 19-3, 19-4, 1.1V ref / VCC
#define ADMUX_VCC 0b00001101
// (1 << V_REF) | (THERM_CHANNEL)
// DS table 19-3, 19-4, internal sensor / 1.1V ref
// [refs1, refs0, refen, adc0en, mux3, mux2, mux1, mux0]
// refs=0b10 : internal 1.1V ref
// mux=0b1110 : internal temperature sensor
#define ADMUX_THERM 0b10001110
#define hwdef_set_admux_therm mcu_set_admux_therm
inline void mcu_set_admux_therm();
#define hwdef_set_admux_voltage mcu_set_admux_voltage
inline void mcu_set_admux_voltage();
inline void mcu_adc_sleep_mode();
inline void mcu_adc_start_measurement();
inline void mcu_adc_off();
// NOP because interrupt flag clears itself
#define mcu_adc_vect_clear()
inline uint16_t mcu_adc_result();
// return Volts * 40, range 0 to 6.375V
#define voltage_raw2cooked mcu_vdd_raw2cooked
inline uint8_t mcu_vdd_raw2cooked(uint16_t measurement);
inline uint8_t mcu_vdivider_raw2cooked(uint16_t measurement);
// return (temp in Kelvin << 6)
#define temp_raw2cooked mcu_temp_raw2cooked
inline uint16_t mcu_temp_raw2cooked(uint16_t measurement);
inline uint8_t mcu_adc_lsb();
////////// WDT //////////
inline void mcu_wdt_active();
inline void mcu_wdt_standby();
inline void mcu_wdt_stop();
// NOP because interrupt flag clears itself
#define mcu_wdt_vect_clear()
////////// PCINT - pin change interrupt (e-switch) //////////
// set these in hwdef
//#define SWITCH_PORT PINA
//#define SWITCH_VECT PCINT0_vect
// NOP because interrupt flag clears itself
#define mcu_switch_vect_clear()
inline void mcu_pcint_on();
inline void mcu_pcint_off();
////////// misc //////////
void reboot();
inline void prevent_reboot_loop();
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