Jordan Earls
A project to implement a console using the Mbed using VGA for video output and a PS/2 keyboard for the input. The eventual goal is to also include tools for managing SD cards, and a semi-self-hosting programming environment.
Dependencies: PS2_MbedConsole fastlib SDFileSystem vga640x480g_mbedconsole lightvm mbed
MbedConsole is a cool little project to have a self-contained computer all on an Mbed. So far it has VGA and PS/2 support and can stand alone without a computer powering it. Next planned features are SD card support and a lightweight programmable VM complete with a file editor and self-hosted assembler.
You can view additional details about it at http://earlz.net/tags/mbedconsole
Diff: textio.cpp
- Revision:
- 1:eb209f0468de
- Child:
- 4:b44c27404035
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/textio.cpp Mon Sep 17 04:41:37 2012 +0000
@@ -0,0 +1,129 @@
+#include "mbedconsole.h"
+
+#define FONTHEIGHT 16
+#define FONTWIDTH 8
+
+int console_x=0, console_y=0;
+int console_color=WHITE; //text color
+
+
+void vsetcursor(int x, int y)
+{
+ console_x=x;
+ console_y=y;
+}
+
+void vrawputc(char c)
+{
+ //fuck that shitv
+ if(console_x>80)
+ {
+ return;
+ }
+ //shift left for fast multiply
+ vga_putchar(console_x<<3, console_y<<4, c, console_color);
+}
+void vputc(char c)
+{
+ //shift left for fast multiply
+ if(console_x>=79)
+ {
+ console_x=0;
+ console_y++;
+ }
+ if(console_y>=24)
+ {
+ console_y--;
+ vga_scroll();
+ }
+ switch(c){
+ case '\n':
+ case '\r':
+ console_y++;
+ console_x=0;
+ break;
+ case '\b':
+ vrawputc(' ');
+ if(console_x>0)
+ {
+ console_x--;
+ }
+ vrawputc(' ');
+ break;
+ case '\t':
+ for(int i=0;i<4;i++)
+ {
+ console_x++;
+ vrawputc(' ');
+ }
+ default:
+ vga_putchar(console_x<<3, console_y<<4, c, console_color);
+ console_x++;
+ }
+}
+
+void vputs(char *s){
+ while(*s!=0){
+ vputc(*s);
+ s++;
+ }
+}
+
+char vgetc()
+{
+ while(!serial.readable()){
+ return serial.getc();
+ }
+ return '!'; //unreachable
+}
+int vgetsl(char *buf, int len)
+{
+ int pos=0;
+ while(1){
+ if(serial.readable()){
+ buf[pos]=serial.getc();
+ if(buf[pos]=='\r'){
+ buf[pos]='\n';
+ }
+
+ vputc(buf[pos]);
+ if(buf[pos]=='\b'){
+ buf[pos]=0;
+ if(pos>0){
+ pos--;
+ buf[pos--]=0;
+ }
+ }
+ if(pos>len-1){
+ break;
+ }
+ if(buf[pos]=='\n'){
+ buf[pos]=0;
+ return 1;
+ }
+ pos++;
+ }
+ }
+ return 0;
+}
+
+
+
+int strlcmp(const char *s1,const char *s2,size_t count){
+ int i=0;
+ while((s1[i]!=0) && (s2[i]!=0)){
+ if(s1[i]!=s2[i]){
+ return -1;
+ }
+ if(i>=count){
+ return -1;
+ }
+ i++;
+
+ }
+ if(s1[i]!=s2[i]){
+ return -1;
+ }
+ return 0;
+}
+