refactor: added peripherals and cpu feature folders

1 files changed, 0 insertions, 244 deletions

diff --git a/src/timer.ts b/src/timer.ts
deleted file mode 100644
index 4a120e7..0000000
--- a/src/timer.ts
+++ /dev/null
@@ -1,244 +0,0 @@
-/**
- * AVR-8 Timers
- * Part of AVR8js
- * Reference: http://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061A.pdf
- *
- * Copyright (C) 2019, Uri Shaked
- */
-
-import { CPU } from './cpu';
-import { avrInterrupt } from './interrupt';
-
-const timer01Dividers = {
-  0: 0,
-  1: 1,
-  2: 8,
-  3: 64,
-  4: 256,
-  5: 1024,
-  6: 0, // TODO: External clock source on T0 pin. Clock on falling edge.
-  7: 0 // TODO: External clock source on T0 pin. Clock on rising edge.
-};
-
-const WGM_NORMAL = 0;
-const WGM_PWM_PHASE_CORRECT = 1;
-const WGM_CTC = 2;
-const WGM_FASTPWM = 3;
-
-const TOV = 1;
-const OCFA = 2;
-const OCFB = 4;
-
-const TOIE = 1;
-const OCIEA = 2;
-const OCIEB = 4;
-
-type u8 = number;
-
-interface TimerDividers {
-  0: number;
-  1: number;
-  2: number;
-  3: number;
-  4: number;
-  5: number;
-  6: number;
-  7: number;
-}
-
-interface AVRTimerConfig {
-  bits: 8 | 16;
-  captureInterrupt: u8;
-  compAInterrupt: u8;
-  compBInterrupt: u8;
-  ovfInterrupt: u8;
-
-  // Register addresses
-  TIFR: u8;
-  OCRA: u8;
-  OCRB: u8;
-  ICR: u8;
-  TCNT: u8;
-  TCCRA: u8;
-  TCCRB: u8;
-  TCCRC: u8;
-  TIMSK: u8;
-
-  dividers: TimerDividers;
-}
-
-export const timer0Config: AVRTimerConfig = {
-  bits: 8,
-  captureInterrupt: 0, // not available
-  compAInterrupt: 0x1c,
-  compBInterrupt: 0x1e,
-  ovfInterrupt: 0x20,
-  TIFR: 0x35,
-  OCRA: 0x47,
-  OCRB: 0x48,
-  ICR: 0, // not available
-  TCNT: 0x46,
-  TCCRA: 0x44,
-  TCCRB: 0x45,
-  TCCRC: 0, // not available
-  TIMSK: 0x6e,
-  dividers: timer01Dividers
-};
-
-export const timer1Config: AVRTimerConfig = {
-  bits: 16,
-  captureInterrupt: 0x14,
-  compAInterrupt: 0x16,
-  compBInterrupt: 0x18,
-  ovfInterrupt: 0x1a,
-  TIFR: 0x36,
-  OCRA: 0x88,
-  OCRB: 0x8a,
-  ICR: 0x86,
-  TCNT: 0x84,
-  TCCRA: 0x80,
-  TCCRB: 0x81,
-  TCCRC: 0x82,
-  TIMSK: 0x6f,
-  dividers: timer01Dividers
-};
-
-export const timer2Config: AVRTimerConfig = {
-  bits: 8,
-  captureInterrupt: 0, // not available
-  compAInterrupt: 0x0e,
-  compBInterrupt: 0x10,
-  ovfInterrupt: 0x12,
-  TIFR: 0x37,
-  OCRA: 0xb3,
-  OCRB: 0xb4,
-  ICR: 0, // not available
-  TCNT: 0xb2,
-  TCCRA: 0xb0,
-  TCCRB: 0xb1,
-  TCCRC: 0, // not available
-  TIMSK: 0x70,
-  dividers: {
-    0: 1,
-    1: 1,
-    2: 8,
-    3: 32,
-    4: 64,
-    5: 128,
-    6: 256,
-    7: 1024
-  }
-};
-
-export class AVRTimer {
-  private mask = (1 << this.config.bits) - 1;
-  private lastCycle = 0;
-  private ocrA: u8 = 0;
-  private ocrB: u8 = 0;
-
-  constructor(private cpu: CPU, private config: AVRTimerConfig) {
-    cpu.writeHooks[config.TCNT] = (value: u8) => {
-      this.TCNT = value;
-      this.timerUpdated(value);
-      return true;
-    };
-    cpu.writeHooks[config.OCRA] = (value: u8) => {
-      // TODO implement buffering when timer running in PWM mode
-      this.ocrA = value;
-    };
-    cpu.writeHooks[config.OCRB] = (value: u8) => {
-      this.ocrB = value;
-    };
-  }
-
-  reset() {
-    this.lastCycle = 0;
-    this.ocrA = 0;
-    this.ocrB = 0;
-  }
-
-  get TIFR() {
-    return this.cpu.data[this.config.TIFR];
-  }
-
-  set TIFR(value: u8) {
-    this.cpu.data[this.config.TIFR] = value;
-  }
-
-  get TCNT() {
-    return this.cpu.data[this.config.TCNT];
-  }
-
-  set TCNT(value: u8) {
-    this.cpu.data[this.config.TCNT] = value;
-  }
-
-  get TCCRA() {
-    return this.cpu.data[this.config.TCCRA];
-  }
-
-  get TCCRB() {
-    return this.cpu.data[this.config.TCCRB];
-  }
-
-  get TIMSK() {
-    return this.cpu.data[this.config.TIMSK];
-  }
-
-  get CS() {
-    return (this.TCCRB & 0x7) as 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7;
-  }
-
-  get WGM() {
-    return ((this.TCCRB & 0x8) >> 1) | (this.TCCRA & 0x3);
-  }
-
-  tick() {
-    const divider = this.config.dividers[this.CS];
-    const delta = this.cpu.cycles - this.lastCycle;
-    if (divider && delta >= divider) {
-      const counterDelta = Math.floor(delta / divider);
-      this.lastCycle += counterDelta * divider;
-      const val = this.TCNT;
-      const newVal = (val + counterDelta) & this.mask;
-      this.TCNT = newVal;
-      this.timerUpdated(newVal);
-      if (
-        (this.WGM === WGM_NORMAL ||
-          this.WGM === WGM_PWM_PHASE_CORRECT ||
-          this.WGM === WGM_FASTPWM) &&
-        val > newVal
-      ) {
-        this.TIFR |= TOV;
-      }
-    }
-    if (this.cpu.interruptsEnabled) {
-      if (this.TIFR & TOV && this.TIMSK & TOIE) {
-        avrInterrupt(this.cpu, this.config.ovfInterrupt);
-        this.TIFR &= ~TOV;
-      }
-      if (this.TIFR & OCFA && this.TIMSK & OCIEA) {
-        avrInterrupt(this.cpu, this.config.compAInterrupt);
-        this.TIFR &= ~OCFA;
-      }
-      if (this.TIFR & OCFB && this.TIMSK & OCIEB) {
-        avrInterrupt(this.cpu, this.config.compBInterrupt);
-        this.TIFR &= ~OCFB;
-      }
-    }
-  }
-
-  private timerUpdated(value: u8) {
-    if (this.ocrA && value === this.ocrA) {
-      this.TIFR |= OCFA;
-      if (this.WGM === WGM_CTC) {
-        // Clear Timer on Compare Match (CTC) Mode
-        this.TCNT = 0;
-        this.TIFR |= TOV;
-      }
-    }
-    if (this.ocrB && value === this.ocrB) {
-      this.TIFR |= OCFB;
-    }
-  }
-}