Jordan Earls / MbedConsole Featured

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: main.cpp

Revision:
20:13556e5bac04
Parent:
16:370b9e559f92
--- a/main.cpp	Fri Apr 12 04:15:26 2013 +0000
+++ b/main.cpp	Mon Apr 15 02:37:02 2013 +0000
@@ -33,20 +33,23 @@
 #include "clock.h"
 #include "i2s.h"
 #include "nvic.h"
- 
+#include "SDFileSystem.h" 
+
+#define DEVICE_STDIO_MESSAGES
+#include "mbed_debug.h"
  
 PS2Keyboard *ps2kb;
 DigitalOut myled(LED1);
-
-
 Serial serial(USBTX, USBRX);
 ConsoleStream console("console");
+SDFileSystem *sdcard;
+
 
 void keyboard_init();
 
 int main() {
     serial.baud(9600);
-    serial.puts("Resetting interrupt priorities...");
+    serial.puts("Resetting interrupt priorities..\n");
     //Set all priorities to 100 so we are able to make VGA a priority
     //By default, all priorities are at their highest 0
     NVIC_SetPriority( NonMaskableInt_IRQn, 100 ); 
@@ -72,7 +75,7 @@
     NVIC_SetPriority(I2C0_IRQn, 100);
     NVIC_SetPriority(I2C1_IRQn, 100);
     NVIC_SetPriority(I2C2_IRQn, 100);
-    NVIC_SetPriority(SPI_IRQn, 100);
+    NVIC_SetPriority(SPI_IRQn, 1);
     NVIC_SetPriority(SSP0_IRQn, 100);
     NVIC_SetPriority(SSP1_IRQn, 100);
     NVIC_SetPriority(PLL0_IRQn, 100);
@@ -99,16 +102,25 @@
     keyboard_init();
     fl_select_clock_i2s(FL_CLOCK_DIV1); // assume 100MHz
     fl_i2s_set_tx_rate(1,4);            // set 25 MHz pixel clock 
-    
+
     
     NVIC_SetPriority( EINT3_IRQn, 90 ); 
     
+    //initialize way down here AFTER overclocking has already taken place
+    //Otherwise we end up with sdcard assume a different clockrate or something
+    wait(0.5); //MAGIC do not remove this wait statement. SD card won't work otherwise.
+    sdcard=new SDFileSystem(p11, p12, p13, p20, "sd");
+    
     freopen("/console", "w", stdout);
     setvbuf(stdout, NULL, _IONBF, 0);
     freopen("/console", "r", stdin);
-    //setvbuf(stdout, NULL, _IONBF, 0);
-    freopen("/console", "w", stderr);
+    setvbuf(stdout, NULL, _IONBF, 0);
+    //freopen("/console", "w", stderr);
     setvbuf(stderr, NULL, _IONBF, 0);
+    //serial.baud(9216);//9600);
+    
+    serial.puts("Entering main shell\n");
+    debug("testing... ");
     while(1)
     {
         vputs("mbedConsole by Jordan Earls\n");