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

main.cpp@20:13556e5bac04, 2013-04-15 (annotated)

Committer:
earlz
Date:
Mon Apr 15 02:37:02 2013 +0000
Revision:
20:13556e5bac04
Parent:
16:370b9e559f92 
Finally got SD card support working. WOW that was trickier than I expected

Who changed what in which revision?

UserRevisionLine numberNew contents of line
earlz 16:370b9e559f92 1 /*
earlz 16:370b9e559f92 2 <Copyright Header>
earlz 16:370b9e559f92 3 Copyright (c) 2012 Jordan "Earlz" Earls <http://lastyearswishes.com>
earlz 16:370b9e559f92 4 All rights reserved.
earlz 16:370b9e559f92 5
earlz 16:370b9e559f92 6 Redistribution and use in source and binary forms, with or without
earlz 16:370b9e559f92 7 modification, are permitted provided that the following conditions
earlz 16:370b9e559f92 8 are met:
earlz 16:370b9e559f92 9
earlz 16:370b9e559f92 10 1. Redistributions of source code must retain the above copyright
earlz 16:370b9e559f92 11 notice, this list of conditions and the following disclaimer.
earlz 16:370b9e559f92 12 2. Redistributions in binary form must reproduce the above copyright
earlz 16:370b9e559f92 13 notice, this list of conditions and the following disclaimer in the
earlz 16:370b9e559f92 14 documentation and/or other materials provided with the distribution.
earlz 16:370b9e559f92 15 3. The name of the author may not be used to endorse or promote products
earlz 16:370b9e559f92 16 derived from this software without specific prior written permission.
earlz 16:370b9e559f92 17
earlz 16:370b9e559f92 18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
earlz 16:370b9e559f92 19 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
earlz 16:370b9e559f92 20 AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
earlz 16:370b9e559f92 21 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
earlz 16:370b9e559f92 22 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
earlz 16:370b9e559f92 23 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
earlz 16:370b9e559f92 24 OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
earlz 16:370b9e559f92 25 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
earlz 16:370b9e559f92 26 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
earlz 16:370b9e559f92 27 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
earlz 16:370b9e559f92 28
earlz 16:370b9e559f92 29 This file is part of the MbedConsole project
earlz 16:370b9e559f92 30 */
earlz 16:370b9e559f92 31
earlz 1:eb209f0468de 32 #include "mbedconsole.h"
earlz 9:4211d638b2e9 33 #include "clock.h"
earlz 9:4211d638b2e9 34 #include "i2s.h"
earlz 9:4211d638b2e9 35 #include "nvic.h"
earlz 20:13556e5bac04 36 #include "SDFileSystem.h"
earlz 20:13556e5bac04 37
earlz 20:13556e5bac04 38 #define DEVICE_STDIO_MESSAGES
earlz 20:13556e5bac04 39 #include "mbed_debug.h"
earlz 9:4211d638b2e9 40
earlz 9:4211d638b2e9 41 PS2Keyboard *ps2kb;
earlz 0:6906dbde03da 42 DigitalOut myled(LED1);
earlz 1:eb209f0468de 43 Serial serial(USBTX, USBRX);
earlz 13:442bd2fb4ea0 44 ConsoleStream console("console");
earlz 20:13556e5bac04 45 SDFileSystem *sdcard;
earlz 20:13556e5bac04 46
earlz 0:6906dbde03da 47
earlz 10:bda85442b674 48 void keyboard_init();
earlz 0:6906dbde03da 49
earlz 0:6906dbde03da 50 int main() {
earlz 12:3ee3062cc11c 51 serial.baud(9600);
earlz 20:13556e5bac04 52 serial.puts("Resetting interrupt priorities..\n");
earlz 11:fede136943a9 53 //Set all priorities to 100 so we are able to make VGA a priority
earlz 11:fede136943a9 54 //By default, all priorities are at their highest 0
earlz 11:fede136943a9 55 NVIC_SetPriority( NonMaskableInt_IRQn, 100 );
earlz 11:fede136943a9 56 NVIC_SetPriority(MemoryManagement_IRQn, 100);
earlz 11:fede136943a9 57
earlz 11:fede136943a9 58 NVIC_SetPriority(BusFault_IRQn, 100);
earlz 11:fede136943a9 59 NVIC_SetPriority(UsageFault_IRQn, 100);
earlz 11:fede136943a9 60 NVIC_SetPriority(SVCall_IRQn, 100);
earlz 11:fede136943a9 61 NVIC_SetPriority(DebugMonitor_IRQn, 100);
earlz 11:fede136943a9 62 NVIC_SetPriority(PendSV_IRQn, 100);
earlz 12:3ee3062cc11c 63 NVIC_SetPriority(SysTick_IRQn, 50);
earlz 11:fede136943a9 64 NVIC_SetPriority(WDT_IRQn, 100);
earlz 12:3ee3062cc11c 65 NVIC_SetPriority(TIMER0_IRQn, 85);
earlz 12:3ee3062cc11c 66 NVIC_SetPriority(TIMER1_IRQn, 85);
earlz 12:3ee3062cc11c 67 NVIC_SetPriority(TIMER2_IRQn, 85);
earlz 12:3ee3062cc11c 68 NVIC_SetPriority(TIMER3_IRQn, 85);
earlz 12:3ee3062cc11c 69 NVIC_SetPriority(UART0_IRQn, 75);
earlz 11:fede136943a9 70 NVIC_SetPriority(UART1_IRQn, 100);
earlz 11:fede136943a9 71 NVIC_SetPriority(UART2_IRQn, 100);
earlz 11:fede136943a9 72 NVIC_SetPriority(UART3_IRQn, 100);
earlz 11:fede136943a9 73
earlz 11:fede136943a9 74 NVIC_SetPriority(PWM1_IRQn, 100);
earlz 11:fede136943a9 75 NVIC_SetPriority(I2C0_IRQn, 100);
earlz 11:fede136943a9 76 NVIC_SetPriority(I2C1_IRQn, 100);
earlz 11:fede136943a9 77 NVIC_SetPriority(I2C2_IRQn, 100);
earlz 20:13556e5bac04 78 NVIC_SetPriority(SPI_IRQn, 1);
earlz 11:fede136943a9 79 NVIC_SetPriority(SSP0_IRQn, 100);
earlz 11:fede136943a9 80 NVIC_SetPriority(SSP1_IRQn, 100);
earlz 11:fede136943a9 81 NVIC_SetPriority(PLL0_IRQn, 100);
earlz 11:fede136943a9 82 NVIC_SetPriority(RTC_IRQn, 100);
earlz 11:fede136943a9 83 NVIC_SetPriority(EINT0_IRQn, 100);
earlz 11:fede136943a9 84 NVIC_SetPriority(EINT1_IRQn, 100);
earlz 11:fede136943a9 85
earlz 11:fede136943a9 86 NVIC_SetPriority(EINT2_IRQn, 100);
earlz 11:fede136943a9 87 NVIC_SetPriority(EINT3_IRQn, 100);
earlz 11:fede136943a9 88 NVIC_SetPriority(ADC_IRQn, 100);
earlz 11:fede136943a9 89 NVIC_SetPriority(BOD_IRQn, 100);
earlz 11:fede136943a9 90 NVIC_SetPriority(USB_IRQn, 100);
earlz 11:fede136943a9 91 NVIC_SetPriority(CAN_IRQn, 100);
earlz 11:fede136943a9 92 NVIC_SetPriority(DMA_IRQn, 100);
earlz 11:fede136943a9 93
earlz 11:fede136943a9 94 NVIC_SetPriority(I2S_IRQn, 100);
earlz 11:fede136943a9 95 NVIC_SetPriority(ENET_IRQn, 100);
earlz 11:fede136943a9 96 NVIC_SetPriority(RIT_IRQn, 100);
earlz 11:fede136943a9 97 NVIC_SetPriority(MCPWM_IRQn, 100);
earlz 11:fede136943a9 98 NVIC_SetPriority(QEI_IRQn, 100);
earlz 11:fede136943a9 99 NVIC_SetPriority(PLL1_IRQn, 100);
earlz 0:6906dbde03da 100 init_vga();
earlz 10:bda85442b674 101 vga_cls();
earlz 10:bda85442b674 102 keyboard_init();
earlz 9:4211d638b2e9 103 fl_select_clock_i2s(FL_CLOCK_DIV1); // assume 100MHz
earlz 9:4211d638b2e9 104 fl_i2s_set_tx_rate(1,4); // set 25 MHz pixel clock
earlz 20:13556e5bac04 105
earlz 9:4211d638b2e9 106
earlz 11:fede136943a9 107 NVIC_SetPriority( EINT3_IRQn, 90 );
earlz 13:442bd2fb4ea0 108
earlz 20:13556e5bac04 109 //initialize way down here AFTER overclocking has already taken place
earlz 20:13556e5bac04 110 //Otherwise we end up with sdcard assume a different clockrate or something
earlz 20:13556e5bac04 111 wait(0.5); //MAGIC do not remove this wait statement. SD card won't work otherwise.
earlz 20:13556e5bac04 112 sdcard=new SDFileSystem(p11, p12, p13, p20, "sd");
earlz 20:13556e5bac04 113
earlz 13:442bd2fb4ea0 114 freopen("/console", "w", stdout);
earlz 13:442bd2fb4ea0 115 setvbuf(stdout, NULL, _IONBF, 0);
earlz 13:442bd2fb4ea0 116 freopen("/console", "r", stdin);
earlz 20:13556e5bac04 117 setvbuf(stdout, NULL, _IONBF, 0);
earlz 20:13556e5bac04 118 //freopen("/console", "w", stderr);
earlz 13:442bd2fb4ea0 119 setvbuf(stderr, NULL, _IONBF, 0);
earlz 20:13556e5bac04 120 //serial.baud(9216);//9600);
earlz 20:13556e5bac04 121
earlz 20:13556e5bac04 122 serial.puts("Entering main shell\n");
earlz 20:13556e5bac04 123 debug("testing... ");
earlz 0:6906dbde03da 124 while(1)
earlz 0:6906dbde03da 125 {
earlz 1:eb209f0468de 126 vputs("mbedConsole by Jordan Earls\n");
earlz 1:eb209f0468de 127 shell_begin();
earlz 0:6906dbde03da 128 }
earlz 0:6906dbde03da 129 }
earlz 13:442bd2fb4ea0 130
earlz 13:442bd2fb4ea0 131
earlz 13:442bd2fb4ea0 132
earlz 13:442bd2fb4ea0 133