Kazuki Yamamoto / mbeDshield

The official mbed C/C SDK provides the software platform and libraries to build your applications.

Dependents:   SeeedTouchLCD

Fork of mbed by mbed official

(01.May.2014) started sales! http://www.switch-science.com/catalog/1717/

(13.March.2014) updated to 0.5.0

This is a pin conversion PCB from mbed 1768/11U24 to arduino UNO.

  • So if you have both mbed and arduino shields, I guess you would be happy with such a conversion board :)

Photos

  • Board photo vvv /media/uploads/k4zuki/mbedshield050.brd.png
  • Schematic photo vvv /media/uploads/k4zuki/mbedshield050.sch.png
  • Functionality photo vvv /media/uploads/k4zuki/mbedshieldfunc.jpg

Latest eagle files

PCB >> /media/uploads/k4zuki/mbedshield050.brd
SCH >> /media/uploads/k4zuki/mbedshield050.sch

BIG changes from previous version

  1. Ethernet RJ45 connector is removed.
    1. http://mbed.org/components/Seeed-Ethernet-Shield-V20/ is the biggest hint to use Ethernet!
  2. Most ALL of components can be bought at Akizuki http://akizukidenshi.com/
    1. But sorry, they do not send parts to abroad
  3. Pinout is changed!
arduino0.4.00.5.0
D4p12p21
D5p11p22
MOSI_nonep11
MISO_nonep12
SCK_nonep13

This design has bug(s)

  1. I2C functional pin differs between 1768 and 11U24.

Fixed bugs here

  1. MiniUSB cable cannot be connected on mbed if you solder high-height electrolytic capacitor on C3.
    1. http://akizukidenshi.com/catalog/g/gP-05002/ is the solution to make this 100% AKIZUKI parts!
  2. the 6-pin ISP port is not inprimented in version 0.4.0
    1. it will be fixed in later version 0.4.1/0.4.2/0.5.0 This has beenfixed

I am doing some porting to use existing arduino shields but it may faster if you do it by yourself...

you can use arduino PinName "A0-A5,D0-D13" plus backside SPI port for easier porting.

To do this you have to edit PinName enum in

  • "mbed/TARGET_LPC1768/PinNames.h" or
  • "mbed/TARGET_LPC11U24/PinNames.h" as per your target mbed.

here is the actual list: This list includes define switch to switch pin assignment

part_of_PinNames.h

        USBTX = P0_2,
        USBRX = P0_3,

//from here mbeDshield mod
        D0=p27,
        D1=p28,
        D2=p14,
        D3=p13,
#ifdef MBEDSHIELD_050
        MOSI_=p11,
        MISO_=p12,
        SCK_=p13,
        D4=p21,
        D5=p22,
#else
        D4=p12,
        D5=p11,
#endif
        D6=p23,
        D7=p24,
        D8=p25,
        D9=p26,
        D10=p8,
        D11=p5,
        D12=p6,
        D13=p7,
        A0=p15,
        A1=p16,
        A2=p17,
        A3=p18,
        A4=p19,
        A5=p20,
        SDA=p9,
        SCL=p10,
//mbeDshield mod ends here
        // Not connected
        NC = (int)0xFFFFFFFF

TARGET_LPC2368/vector_defns.h

Committer:
bogdanm
Date:
2013-08-12
Revision:
65:5798e58a58b1
Parent:
64:e3affc9e7238
Child:
66:9c8f0e3462fb

File content as of revision 65:5798e58a58b1:

/* mbed Microcontroller Library - Vectors 
 * Copyright (c) 2006-2009 ARM Limited. All rights reserved. 
 */

#ifndef MBED_VECTOR_DEFNS_H
#define MBED_VECTOR_DEFNS_H
 
// Assember Macros 
#ifdef __ARMCC_VERSION
#define EXPORT(x) EXPORT x
#define WEAK_EXPORT(x) EXPORT x [WEAK]
#define IMPORT(x) IMPORT x
#define LABEL(x) x
#else        
#define EXPORT(x) .global x
#define WEAK_EXPORT(x) .weak x
#define IMPORT(x) .global x
#define LABEL(x) x:        
#endif

// RealMonitor
// Requires RAM (0x40000040-0x4000011F) to be allocated by the linker

// RealMonitor entry points
#define rm_init_entry 0x7fffff91
#define rm_undef_handler 0x7fffffa0
#define rm_prefetchabort_handler 0x7fffffb0
#define rm_dataabort_handler 0x7fffffc0
#define rm_irqhandler2 0x7fffffe0
//#define rm_RunningToStopped 0x7ffff808 // ARM - MBED64
#define rm_RunningToStopped 0x7ffff820 // ARM - PHAT40

// Unofficial RealMonitor entry points and variables
#define RM_MSG_SWI 0x00940000 
#define StateP 0x40000040 

// VIC register addresses
#define VIC_Base 0xfffff000
#define VICAddress_Offset 0xf00
#define VICVectAddr0_Offset 0x100
#define VICVectAddr2_Offset 0x108
#define VICVectAddr3_Offset 0x10c
#define VICVectAddr31_Offset 0x17c
#define VICIntEnClr_Offset 0x014
#define VICIntEnClr    (*(volatile unsigned long *)(VIC_Base + 0x014))
#define VICVectAddr2   (*(volatile unsigned long *)(VIC_Base + 0x108))
#define VICVectAddr3   (*(volatile unsigned long *)(VIC_Base + 0x10C))

// ARM Mode bits and Interrupt flags in PSRs
#define Mode_USR 0x10
#define Mode_FIQ 0x11
#define Mode_IRQ 0x12
#define Mode_SVC 0x13
#define Mode_ABT 0x17
#define Mode_UND 0x1B
#define Mode_SYS 0x1F
#define I_Bit 0x80    // when I bit is set, IRQ is disabled
#define F_Bit 0x40    // when F bit is set, FIQ is disabled

// MCU RAM
#define LPC2368_RAM_ADDRESS 0x40000000	// RAM Base
#define LPC2368_RAM_SIZE 0x8000		// 32KB 

// ISR Stack Allocation
#define UND_stack_size  0x00000040
#define SVC_stack_size  0x00000040
#define ABT_stack_size  0x00000040
#define FIQ_stack_size  0x00000000
#define IRQ_stack_size  0x00000040

#define ISR_stack_size  (UND_stack_size + SVC_stack_size + ABT_stack_size + FIQ_stack_size + IRQ_stack_size)

// Full Descending Stack, so top-most stack points to just above the top of RAM
#define LPC2368_STACK_TOP (LPC2368_RAM_ADDRESS + LPC2368_RAM_SIZE)
#define USR_STACK_TOP	  (LPC2368_STACK_TOP - ISR_stack_size)

#endif