VGA/MultitaskingCPM/MultitaskingCPM.ino

Multitasking - Multisession CP/M 3 compatible system. Supports directories and FAT32 file system with SD Cards.

/*
  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - www.fabgl.com
  Copyright (c) 2019-2020 Fabrizio Di Vittorio.
  All rights reserved.

  This file is part of FabGL Library.

  FabGL is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  FabGL is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with FabGL.  If not, see <http://www.gnu.org/licenses/>.
 */


/*
 * Optional SD Card connections:
 *   MISO => GPIO 16
 *   MOSI => GPIO 17
 *   CLK  => GPIO 14
 *   CS   => GPIO 13
 *
 * To change above assignment fill other paramaters of FileBrowser::mountSDCard().
 */





#include "fabgl.h"
#include "src/supervisor.h"
#include "src/programs.h"



// Flash and SDCard configuration
#define FORMAT_ON_FAIL     true
#define SPIFFS_MOUNT_PATH  "/flash"
#define SDCARD_MOUNT_PATH  "/SD"
#define MAXFILES           6     // SDCARD: each file takes about 4K of RAM!



// globals

fabgl::VGATextController DisplayController;
fabgl::PS2Controller     PS2Controller;

Supervisor supervisor(&DisplayController);



// base path (can be SPIFFS_MOUNT_PATH or SDCARD_MOUNT_PATH depending from what was successfully mounted first)
char const * basepath = nullptr;


String driveA_path;
String driveB_path;



void setup()
{
  //Serial.begin(115200); delay(500); Serial.write("\r\nReset\r\n");

  disableCore0WDT();
  disableCore1WDT();

  // Reduces some defaults to save RAM...
  fabgl::VGAController::queueSize                    = 128;
  fabgl::Terminal::inputQueueSize                    = 32;
  fabgl::Terminal::inputConsumerTaskStackSize        = 1024;
  fabgl::Terminal::keyboardReaderTaskStackSize       = 800;
  fabgl::Keyboard::scancodeToVirtualKeyTaskStackSize = 1500;

  // setup Keyboard (default configuration)
  PS2Controller.begin(PS2Preset::KeyboardPort0);

  // setup VGA (default configuration with 64 colors)

  DisplayController.begin();
  DisplayController.setResolution(VGA_640x200_70Hz);
  //DisplayController.setResolution(VGA_640x480_60Hz, 640, 200);

  auto term = new fabgl::Terminal;
  term->begin(&DisplayController);
  term->connectLocally();      // to use Terminal.read(), available(), etc..
  term->clear();
  term->write("Initializing...\r");
  term->flush();

  if (FileBrowser::mountSDCard(FORMAT_ON_FAIL, SDCARD_MOUNT_PATH, MAXFILES))
    basepath = SDCARD_MOUNT_PATH;
  else if (FileBrowser::mountSPIFFS(FORMAT_ON_FAIL, SPIFFS_MOUNT_PATH, MAXFILES))
    basepath = SPIFFS_MOUNT_PATH;

  // uncomment to format SPIFFS or SD card
  //FileBrowser::format(fabgl::DriveType::SPIFFS, 0);
  //FileBrowser::format(fabgl::DriveType::SDCard, 0);

  driveA_path = String(basepath) + String("/driveA");
  driveB_path = String(basepath) + String("/driveB");

  FileBrowser fb;

  fb.setDirectory(basepath);
  if (!fb.exists("driveA")) {

    fb.makeDirectory("driveA");

    // create default programs
    for (int i = 0; i < sizeof(programs) / sizeof(Program); ++i) {
      term->printf("Creating %s\\%s\r\n", programs[i].path, programs[i].filename);
      term->flush();
      // check directory
      fb.setDirectory(driveA_path.c_str());
      if (!fb.exists(programs[i].path))
        fb.makeDirectory(programs[i].path);
      fb.changeDirectory(programs[i].path);
      // copy file
      AutoSuspendInterrupts autoInt;
      FILE * f = fb.openFile(programs[i].filename, "wb");
      if (f) {
        fwrite(programs[i].data, 1, programs[i].size, f);
        fclose(f);
      } else {
        term->write("  FAILED!\r\n");
      }
    }

  }

  fb.setDirectory(basepath);
  if (!fb.exists("driveB"))
    fb.makeDirectory("driveB");

  delete term;

  supervisor.onNewSession = [&](HAL * hal) {

    hal->mountDrive(0, driveA_path.c_str());
    hal->mountDrive(1, driveB_path.c_str());

    // Serial (USB) ->  CP/M AUX1
    hal->setSerial(0, &Serial);
  };

  // change terminal when pressing F1..F12
  PS2Controller.keyboard()->onVirtualKey = [&](VirtualKey * vk, bool keyDown) {
    if (*vk >= VirtualKey::VK_F1 && *vk <= VirtualKey::VK_F12) {
      if (keyDown) {
        supervisor.activateSession((int)*vk - VirtualKey::VK_F1);
      }
      *vk = VirtualKey::VK_NONE;
    }
  };



}


void loop()
{
  supervisor.activateSession(0);
  vTaskDelete(NULL);
}