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

Diff: TARGET_LPC2368/vector_defns.h

Revision:
64:e3affc9e7238
Parent:
54:71b101360fb9
Child:
65:5798e58a58b1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_LPC2368/vector_defns.h	Mon Aug 05 12:28:09 2013 +0300
@@ -0,0 +1,75 @@
+/* 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 VICVectAddr2_Offset 0x108
+#define VICVectAddr3_Offset 0x10c
+#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