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-rw-r--r--include/arch/atmega2560/arch_types.h12
-rw-r--r--include/arch/atmega2560/driver/counter.h41
-rw-r--r--include/arch/atmega2560/driver/gpio.h234
-rw-r--r--include/arch/atmega2560/driver/stdout.h24
-rw-r--r--include/arch/atmega2560/driver/timer.h40
-rw-r--r--include/arch/atmega2560/driver/uptime.h34
6 files changed, 385 insertions, 0 deletions
diff --git a/include/arch/atmega2560/arch_types.h b/include/arch/atmega2560/arch_types.h
new file mode 100644
index 0000000..2e9f070
--- /dev/null
+++ b/include/arch/atmega2560/arch_types.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef ARCH_TYPES_H
+#define ARCH_TYPES_H
+
+typedef uint8_t native_uint_t;
+typedef int8_t native_int_t;
+
+#endif
diff --git a/include/arch/atmega2560/driver/counter.h b/include/arch/atmega2560/driver/counter.h
new file mode 100644
index 0000000..06ff73a
--- /dev/null
+++ b/include/arch/atmega2560/driver/counter.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef COUNTER_H
+#define COUNTER_H
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+typedef uint16_t counter_value_t;
+typedef uint8_t counter_overflow_t;
+
+class Counter {
+ private:
+ Counter(const Counter &copy);
+
+ public:
+ uint16_t value;
+ volatile uint8_t overflow;
+
+ Counter() : overflow(0) {}
+
+ inline void start() {
+ overflow = 0;
+ TCNT3 = 0;
+ TCCR3A = 0;
+ TCCR3B = _BV(CS10); // no prescaler
+ TIMSK3 = _BV(TOIE3);
+ }
+
+ inline void stop() {
+ TCCR3B = 0;
+ value = TCNT3;
+ }
+};
+
+extern Counter counter;
+
+#endif
diff --git a/include/arch/atmega2560/driver/gpio.h b/include/arch/atmega2560/driver/gpio.h
new file mode 100644
index 0000000..b163ea0
--- /dev/null
+++ b/include/arch/atmega2560/driver/gpio.h
@@ -0,0 +1,234 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef GPIO_H
+#define GPIO_H
+
+#include <avr/io.h>
+
+class GPIO {
+ private:
+ GPIO(const GPIO &copy);
+
+ public:
+ GPIO () {}
+
+ enum Pin : unsigned char {
+ pa0 = 0,
+ pa1 = 1,
+ pa2 = 2,
+ pa3 = 3,
+ pa4 = 4,
+ pa5 = 5,
+ pa6 = 6,
+ pa7 = 7,
+ pb0 = 8,
+ pb1 = 9,
+ pb2 = 10,
+ pb3 = 11,
+ pb4 = 12,
+ pb5 = 13,
+ pb6 = 14,
+ pb7 = 15,
+ pc0 = 16,
+ pc1 = 17,
+ pc2 = 18,
+ pc3 = 19,
+ pc4 = 20,
+ pc5 = 21,
+ pc6 = 22,
+ pc7 = 23,
+ pd0 = 24,
+ pd1 = 25,
+ pd2 = 26,
+ pd3 = 27,
+ pd4 = 28,
+ pd5 = 29,
+ pd6 = 30,
+ pd7 = 31,
+ pe0 = 32,
+ pe1 = 33,
+ pe2 = 34,
+ pe3 = 35,
+ pe4 = 36,
+ pe5 = 37,
+ pe6 = 38,
+ pe7 = 39,
+ pf0 = 40,
+ pf1 = 41,
+ pf2 = 42,
+ pf3 = 43,
+ pf4 = 44,
+ pf5 = 45,
+ pf6 = 46,
+ pf7 = 47,
+ pg0 = 48,
+ pg1 = 49,
+ pg2 = 50,
+ pg3 = 51,
+ pg4 = 52,
+ pg5 = 53,
+ ph0 = 56,
+ ph1 = 57,
+ ph2 = 58,
+ ph3 = 59,
+ ph4 = 60,
+ ph5 = 61,
+ ph6 = 62,
+ ph7 = 63,
+ pj0 = 64,
+ pj1 = 65,
+ pj2 = 66,
+ pj3 = 67,
+ pj4 = 68,
+ pj5 = 69,
+ pj6 = 70,
+ pj7 = 71,
+ pk0 = 72,
+ pk1 = 73,
+ pk2 = 74,
+ pk3 = 75,
+ pk4 = 76,
+ pk5 = 77,
+ pk6 = 78,
+ pk7 = 79,
+ pl0 = 80,
+ pl1 = 81,
+ pl2 = 82,
+ pl3 = 83,
+ pl4 = 84,
+ pl5 = 85,
+ pl6 = 86,
+ pl7 = 87
+ };
+
+ inline void setup() {
+ DDRB = _BV(PB7);
+ }
+ inline volatile uint8_t * pinToPort(uint8_t pin) {
+ if (pin <= pa7) {
+ return &PORTA;
+ }
+ if (pin <= pb7) {
+ return &PORTB;
+ }
+ if (pin <= pc7) {
+ return &PORTC;
+ }
+ return &PORTD;
+ }
+ inline unsigned char pinToBitmask(uint8_t pin) {
+ return _BV(pin % 8);
+ }
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+ inline void led_on(unsigned char id) {
+ PORTB |= _BV(PB7);
+ }
+ inline void led_off(unsigned char id) {
+ PORTB &= ~_BV(PB7);
+ }
+ inline void led_toggle(unsigned char id) {
+ PINB = _BV(PB7);
+ }
+ inline void input(unsigned char const pin) {
+ if (pin < 8) {
+ DDRA &= ~_BV(pin);
+ } else if (pin < 16) {
+ DDRB &= ~_BV(pin - 8);
+ } else if (pin < 24) {
+ DDRC &= ~_BV(pin - 16);
+ } else if (pin < 32) {
+ DDRD &= ~_BV(pin - 24);
+ }
+ }
+#pragma GCC diagnostic pop
+ inline void input(unsigned char const pin, unsigned char const pull) {
+ if (pin < 8) {
+ DDRA &= ~_BV(pin);
+ PORTA |= _BV(pin);
+ } else if (pin < 16) {
+ DDRB &= ~_BV(pin - 8);
+ PORTB |= _BV(pin - 8);
+ } else if (pin < 24) {
+ DDRC &= ~_BV(pin - 16);
+ PORTC |= _BV(pin - 16);
+ } else if (pin < 32) {
+ DDRD &= ~_BV(pin - 24);
+ PORTD |= _BV(pin - 24);
+ }
+ }
+ inline void output(unsigned char const pin) {
+ if (pin < 8) {
+ DDRA |= _BV(pin);
+ } else if (pin < 16) {
+ DDRB |= _BV(pin - 8);
+ } else if (pin < 24) {
+ DDRC |= _BV(pin - 16);
+ } else if (pin < 32) {
+ DDRD |= _BV(pin - 24);
+ }
+ }
+ inline void output(unsigned char const pin, unsigned char const value) {
+ if (pin < 8) {
+ PORTA = value ? (PORTA | _BV(pin)) : (PORTA & ~_BV(pin));
+ DDRA |= _BV(pin);
+ } else if (pin < 16) {
+ PORTB = value ? (PORTB | _BV(pin - 8)) : (PORTB & ~_BV(pin - 8));
+ DDRB |= _BV(pin - 8);
+ } else if (pin < 24) {
+ PORTC = value ? (PORTC | _BV(pin - 16)) : (PORTC & ~_BV(pin - 16));
+ DDRC |= _BV(pin - 16);
+ } else if (pin < 32) {
+ PORTD = value ? (PORTD | _BV(pin - 24)) : (PORTD & ~_BV(pin - 24));
+ DDRD |= _BV(pin - 24);
+ }
+ }
+ inline unsigned char read(unsigned char const pin) {
+ if (pin < 8) {
+ return (PINA & _BV(pin));
+ }
+ if (pin < 16) {
+ return (PINB & _BV(pin - 8));
+ }
+ if (pin < 24) {
+ return (PINC & _BV(pin - 16));
+ }
+ if (pin < 32) {
+ return (PIND & _BV(pin - 24));
+ }
+ return 0;
+ }
+ inline void write(unsigned char const pin, unsigned char value) {
+ if (pin < 8) {
+ if (value) {
+ PORTA |= _BV(pin);
+ } else {
+ PORTA &= ~_BV(pin);
+ }
+ } else if (pin < 16) {
+ if (value) {
+ PORTB |= _BV(pin - 8);
+ } else {
+ PORTB &= ~_BV(pin - 8);
+ }
+ } else if (pin < 24) {
+ if (value) {
+ PORTC |= _BV(pin - 16);
+ } else {
+ PORTC &= ~_BV(pin - 16);
+ }
+ } else if (pin < 32) {
+ if (value) {
+ PORTD |= _BV(pin - 24);
+ } else {
+ PORTD &= ~_BV(pin - 24);
+ }
+ }
+ }
+};
+
+extern GPIO gpio;
+
+#endif
diff --git a/include/arch/atmega2560/driver/stdout.h b/include/arch/atmega2560/driver/stdout.h
new file mode 100644
index 0000000..09b18c1
--- /dev/null
+++ b/include/arch/atmega2560/driver/stdout.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef STANDARDOUTPUT_H
+#define STANDARDOUTPUT_H
+
+#include "object/outputstream.h"
+
+class StandardOutput : public OutputStream {
+ private:
+ StandardOutput(const StandardOutput &copy);
+
+ public:
+ StandardOutput () {}
+ void setup();
+
+ virtual void put(char c) override;
+};
+
+extern StandardOutput kout;
+
+#endif
diff --git a/include/arch/atmega2560/driver/timer.h b/include/arch/atmega2560/driver/timer.h
new file mode 100644
index 0000000..73a8125
--- /dev/null
+++ b/include/arch/atmega2560/driver/timer.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#define ON_TIMER_INTERRUPT_head ISR(TIMER0_COMPA_vect) {
+#define ON_TIMER_INTERRUPT_tail }
+
+class Timer {
+ private:
+ Timer(const Timer &copy);
+ unsigned char prescaler;
+
+ public:
+ Timer() {}
+
+ inline void setup_khz(uint16_t const frequency) {
+ OCR0A = frequency ? 255 / frequency : 1;
+ TCCR0A = _BV(WGM01);
+ prescaler = _BV(CS01) | _BV(CS00);
+ }
+ inline void setup_hz(uint16_t const frequency) {
+ OCR0A = frequency ? 255 / frequency : 1;
+ TCCR0A = _BV(WGM01);
+ prescaler = _BV(CS02) | _BV(CS00);
+ }
+ inline void start(unsigned char const interrupt) {
+ TCNT0 = 0;
+ TCCR0B = prescaler;
+ if (interrupt) {
+ TIMSK0 = _BV(OCIE0A);
+ }
+ }
+ inline void stop() { TCCR0B = 0; TIMSK0 = 0; }
+};
+
+extern Timer timer;
diff --git a/include/arch/atmega2560/driver/uptime.h b/include/arch/atmega2560/driver/uptime.h
new file mode 100644
index 0000000..621a55c
--- /dev/null
+++ b/include/arch/atmega2560/driver/uptime.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef UPTIME_H
+#define UPTIME_H
+
+#include <avr/io.h>
+
+class Uptime {
+ private:
+ Uptime(const Uptime &copy);
+#ifdef TIMER_S
+ uint8_t seconds;
+#endif
+
+ public:
+#ifdef TIMER_S
+ Uptime () : seconds(0) {}
+#else
+ Uptime () {}
+#endif
+ inline uint8_t get_cycles() { return TCNT0; }
+ inline uint8_t get_us() { return TCNT2/2; }
+#ifdef TIMER_S
+ inline uint8_t get_s() { return seconds; }
+ inline void tick_s() { seconds++; }
+#endif
+};
+
+extern Uptime uptime;
+
+#endif
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