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
Revision 1:eb209f0468de, committed 2012-09-17
- Comitter:
- earlz
- Date:
- Mon Sep 17 04:41:37 2012 +0000
- Parent:
- 0:6906dbde03da
- Child:
- 2:e2a4c5d17d59
- Commit message:
- Getting more and more useful
Changed in this revision
--- a/main.cpp Mon Sep 17 03:25:23 2012 +0000
+++ b/main.cpp Mon Sep 17 04:41:37 2012 +0000
@@ -1,82 +1,24 @@
-#include "mbed.h"
-#include "vga640x480g.h"
+#include "mbedconsole.h"
-#define FONTHEIGHT 16
-#define FONTWIDTH 8
-int console_x=0, console_y=0;
-int console_color=WHITE; //text color
DigitalOut myled(LED1);
-Serial serial(USBTX,USBRX);
+
+Serial serial(USBTX, USBRX);
-void rawputc(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 putc(char c)
-{
- //shift left for fast multiply
- if(console_x>=79)
- {
- console_x=0;
- console_y++;
- }
- switch(c){
- case '\n':
- case '\r':
- console_y++;
- console_x=0;
- break;
- case '\b':
- rawputc(' ');
- if(console_x>0)
- {
- console_x--;
- }
- rawputc(' ');
- break;
- case '\t':
- for(int i=0;i<4;i++)
- {
- console_x++;
- rawputc(' ');
- }
- default:
- vga_putchar(console_x<<3, console_y<<4, c, console_color);
- console_x++;
- }
-}
-/*void puts(char *s){
- while(*s!=0){
- char c=*s;
- switch(c)
- case '\n':
- case '\r':
- console_x=0;
- vga_putchar(console_x,console_y,*s,console_color);
- }
-*/
+
int main() {
init_vga();
-
serial.baud(115200);
vga_cls();
while(1)
{
- if(serial.readable()){
- putc(serial.getc());
- }
+ vputs("mbedConsole by Jordan Earls\n");
+ shell_begin();
}
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbedconsole.h Mon Sep 17 04:41:37 2012 +0000 @@ -0,0 +1,20 @@ +#ifndef MBEDCONSOLE_H +#define MBEDCONSOLE_H + +#include "mbed.h" +#include "vga640x480g.h" + +void vputc(char c); +void vputs(char *s); +char vgetc(); +int vgetsl(char *s, int len); + +int strlcmp(const char *s1,const char *s2,size_t count); + +void shell_begin(); + +extern Serial serial; + + + +#endif \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/shell.cpp Mon Sep 17 04:41:37 2012 +0000
@@ -0,0 +1,50 @@
+#include "mbedconsole.h"
+LocalFileSystem local("local");
+void shell_begin(){
+ vputs(">>Micro eMBEDded Shell v0.1<<\n");
+ char *cmd=(char*)malloc(128);
+ bool valid=false;
+ while(1){
+ vputs("> ");
+ vgetsl(cmd, 128);
+ vputc('\n');
+ vputs(cmd);
+ valid=false;
+ if(strlcmp(cmd, "help", 5)==0){
+ valid=true;
+ vputs("Command list:\n");
+ vputs("help -- this text \n");
+ vputs("cls -- clear the screen\n");
+ }else if(strlcmp(cmd,"cls",4)==0){
+ valid=true;
+ vga_cls();
+ }else if(strlcmp(cmd,"test", 5)==0){
+
+ vputs("Opening File...\n"); // Drive should be marked as removed
+ FILE *fp = fopen("/local/test.txt", "w");
+ if(!fp) {
+ vputs("File /local/test.txt could not be opened!\n");
+ exit(1);
+ }
+
+ wait(5.0);
+
+ vputs("Writing Data...\n");
+ fprintf(fp, "Hello World!");
+
+ wait(5.0);
+
+ vputs("Closing File...\n");
+ fclose(fp);
+
+ // Drive should be restored. this is the same as just returning from main
+ wait(5);
+ }
+ if(!valid){
+ vputs("invalid command!\n");
+ }
+ }
+}
+
+
+
--- /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;
+}
+