From 8934a7566a038a74464d3d8df9d04fd875e5b1d7 Mon Sep 17 00:00:00 2001
From: lironh
Date: Sat, 21 Mar 2020 09:52:53 +0200
Subject: refactor: added peripherals and cpu feature folders

---
 src/gpio.ts | 149 ------------------------------------------------------------
 1 file changed, 149 deletions(-)
 delete mode 100644 src/gpio.ts

(limited to 'src/gpio.ts')

diff --git a/src/gpio.ts b/src/gpio.ts
deleted file mode 100644
index d0df06d..0000000
--- a/src/gpio.ts
+++ /dev/null
@@ -1,149 +0,0 @@
-/**
- * AVR-8 GPIO Port implementation
- * 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, 2020, Uri Shaked
- */
-import { CPU } from './cpu';
-import { u8 } from './types';
-
-export interface AVRPortConfig {
-  // Register addresses
-  PIN: u8;
-  DDR: u8;
-  PORT: u8;
-}
-
-export type GPIOListener = (value: u8, oldValue: u8) => void;
-
-export const portAConfig: AVRPortConfig = {
-  PIN: 0x20,
-  DDR: 0x21,
-  PORT: 0x22
-};
-
-export const portBConfig: AVRPortConfig = {
-  PIN: 0x23,
-  DDR: 0x24,
-  PORT: 0x25
-};
-
-export const portCConfig: AVRPortConfig = {
-  PIN: 0x26,
-  DDR: 0x27,
-  PORT: 0x28
-};
-
-export const portDConfig: AVRPortConfig = {
-  PIN: 0x29,
-  DDR: 0x2a,
-  PORT: 0x2b
-};
-
-export const portEConfig: AVRPortConfig = {
-  PIN: 0x2c,
-  DDR: 0x2d,
-  PORT: 0x2e
-};
-
-export const portFConfig: AVRPortConfig = {
-  PIN: 0x2f,
-  DDR: 0x30,
-  PORT: 0x31
-};
-
-export const portGConfig: AVRPortConfig = {
-  PIN: 0x32,
-  DDR: 0x33,
-  PORT: 0x34
-};
-
-export const portHConfig: AVRPortConfig = {
-  PIN: 0x100,
-  DDR: 0x101,
-  PORT: 0x102
-};
-
-export const portJConfig: AVRPortConfig = {
-  PIN: 0x103,
-  DDR: 0x104,
-  PORT: 0x105
-};
-
-export const portKConfig: AVRPortConfig = {
-  PIN: 0x106,
-  DDR: 0x107,
-  PORT: 0x108
-};
-
-export const portLConfig: AVRPortConfig = {
-  PIN: 0x109,
-  DDR: 0x10a,
-  PORT: 0x10b
-};
-
-export enum PinState {
-  Low,
-  High,
-  Input,
-  InputPullUp
-}
-
-export class AVRIOPort {
-  private listeners: GPIOListener[] = [];
-
-  constructor(private cpu: CPU, private portConfig: AVRPortConfig) {
-    cpu.writeHooks[portConfig.PORT] = (value: u8, oldValue: u8) => {
-      const ddrMask = cpu.data[portConfig.DDR];
-      cpu.data[portConfig.PORT] = value;
-      value &= ddrMask;
-      cpu.data[portConfig.PIN] = (cpu.data[portConfig.PIN] & ~ddrMask) | value;
-      this.writeGpio(value, oldValue & ddrMask);
-      return true;
-    };
-    cpu.writeHooks[portConfig.PIN] = (value: u8) => {
-      // Writing to 1 PIN toggles PORT bits
-      const oldPortValue = cpu.data[portConfig.PORT];
-      const ddrMask = cpu.data[portConfig.DDR];
-      const portValue = oldPortValue ^ value;
-      cpu.data[portConfig.PORT] = portValue;
-      cpu.data[portConfig.PIN] = (cpu.data[portConfig.PIN] & ~ddrMask) | (portValue & ddrMask);
-      this.writeGpio(portValue & ddrMask, oldPortValue & ddrMask);
-      return true;
-    };
-  }
-
-  addListener(listener: GPIOListener) {
-    this.listeners.push(listener);
-  }
-
-  removeListener(listener: GPIOListener) {
-    this.listeners = this.listeners.filter((l) => l !== listener);
-  }
-
-  /**
-   * Get the state of a given GPIO pin
-   *
-   * @param index Pin index to return from 0 to 7
-   * @returns PinState.Low or PinState.High if the pin is set to output, PinState.Input if the pin is set
-   *   to input, and PinState.InputPullUp if the pin is set to input and the internal pull-up resistor has
-   *   been enabled.
-   */
-  pinState(index: number) {
-    const ddr = this.cpu.data[this.portConfig.DDR];
-    const port = this.cpu.data[this.portConfig.PORT];
-    const bitMask = 1 << index;
-    if (ddr & bitMask) {
-      return port & bitMask ? PinState.High : PinState.Low;
-    } else {
-      return port & bitMask ? PinState.InputPullUp : PinState.Input;
-    }
-  }
-
-  private writeGpio(value: u8, oldValue: u8) {
-    for (const listener of this.listeners) {
-      listener(value, oldValue);
-    }
-  }
-}
-- 
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