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Sam Stevens
2018-10-21 13:47:48 +01:00
parent af0d1b0cd0
commit 6abacd4c1d
6 changed files with 551 additions and 2 deletions
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166
arduino/console.cpp Normal file
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/*
Copyright 2018 Sam Stevens
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include <Arduino.h>
#include <HardwareSerial.h>
#include "console.h"
Console::Console(VM* _vm) {
this->state = CONSOLE_NONE;
this->vm = _vm;
this->inputBuffer = new String("");
}
void Console::loop(HardwareSerial * serial) {
int i;
char d;
switch(this->state) {
case CONSOLE_NONE:
serial->println("Press Enter to activate console.");
this->state = CONSOLE_OFF;
break;
case CONSOLE_OFF:
if(serial->available()) {
if (serial->read() == 10) {
serial->println("Console active. Type ? for help.");
this->state = CONSOLE_ACTIVATE;
}
}
break;
case CONSOLE_ACTIVATE:
serial->print("> ");
this->state = CONSOLE_ACTIVE;
break;
case CONSOLE_ACTIVE:
if(serial->available()) {
while((d = (char)serial->read()) != -1) {
if (d == 27) {
//escape, deactivate console
this->inputBuffer = new String("");
serial->println("Console deactivated.");
this->state = CONSOLE_NONE;
} else if (d == '\n') {
//Finished input
serial->print("\n");
if (this->inputBuffer->equals("?")) {
serial->print(F(
"Commands\n"
"? | this help\n"
"q | deactivate console\n"
"r | run until halted\n"
"s | step one instruction\n"
"e | examine and update memory\n"
"v | show vm status\n"
"rst | reset PC and registers\n"
"clr | reset and clear memory\n"
));
serial->print("> ");
} else if (this->inputBuffer->equals("q")) {
serial->println("Console deactivated.");
this->state = CONSOLE_NONE;
} else if (this->inputBuffer->equals("r")) {
this->state = CONSOLE_RUN;
} else if (this->inputBuffer->equals("s")) {
this->state = CONSOLE_STEP;
} else if (this->inputBuffer->equals("e")) {
this->state = CONSOLE_EXAMINE;
} else if (this->inputBuffer->equals("v")) {
this->state = CONSOLE_VIEW;
} else if (this->inputBuffer->equals("rst")) {
this->state = CONSOLE_RESET;
} else if (this->inputBuffer->equals("clr")) {
this->state = CONSOLE_CLEAR;
} else {
serial->println("Unknown command. Type ? for help.");
serial->print("> ");
}
this->inputBuffer = new String("");
} else if (isAlphaNumeric(d) || isPunct(d) || isSpace(d)) {
//Append input to buffer
this->inputBuffer->concat(d);
serial->print(d);
}
}
}
break;
case CONSOLE_RUN:
break;
case CONSOLE_STEP:
break;
case CONSOLE_EXAMINE:
break;
case CONSOLE_VIEW:
//PC
serial->print( "PC ");
serial->print(this->vm->PC, HEX);
serial->print("\n");
//Registers
serial->print( "R ");
for(i = 0; i < VM_REG_SIZE; i++) {
if (this->vm->R[i] < 0x10) {
serial->print("0");
}
serial->print(this->vm->R[i], HEX);
serial->print(" ");
}
serial->print("\n");
//Memory
serial->println(" 0 1 2 3 4 5 6 7 8 9 A B C D E F");
for(i = 0; i < VM_MEM_SIZE; i++) {
if (i % 16 == 0) {
if (i > 0) {
serial->print("\n");
if (i % 128 == 0 ) {
serial->println(" 0 1 2 3 4 5 6 7 8 9 A B C D E F");
}
}
serial->print("0x");
if (i < 0x10) {
serial->print("0");
}
serial->print(i, HEX);
serial->print(" ");
}
uint8_t m = this->vm->M[i];
if (m < 0x10) {
serial->print("0");
}
serial->print(m, HEX);
serial->print(" ");
}
serial->print("\n");
this->state = CONSOLE_ACTIVATE;
break;
case CONSOLE_RESET:
vm_reset(this->vm);
serial->println("VM Reset");
this->state = CONSOLE_ACTIVATE;
break;
case CONSOLE_CLEAR:
vm_reset(this->vm);
for(i = 0; i < VM_MEM_SIZE; i++) {
this->vm->M[i] = 0;
}
serial->println("VM Reset & Memory Cleared");
this->state = CONSOLE_ACTIVATE;
break;
}
}