1 files changed, 112 insertions, 0 deletions
diff --git a/arch/attiny1634.h b/arch/attiny1634.h
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+++ b/arch/attiny1634.h
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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();
+