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: LPC1768/GCC_CR/LPC1768.ld

Revision:
27:7110ebee3484
diff -r 63bcd7ba4912 -r 7110ebee3484 LPC1768/GCC_CR/LPC1768.ld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LPC1768/GCC_CR/LPC1768.ld	Tue Nov 29 14:59:27 2011 +0000
@@ -0,0 +1,153 @@
+/* mbed - LPC1768 linker script
+ * Based linker script generated by Code Red Technologies Red Suite 4.1
+ */
+GROUP(libgcc.a libc.a libstdc++.a libm.a libcr_newlib_nohost.a crti.o crtn.o crtbegin.o crtend.o)
+
+MEMORY
+{
+  /* Define each memory region */
+  MFlash512 (rx) : ORIGIN = 0x0, LENGTH = 0x80000 /* 512k */
+  RamLoc32 (rwx) : ORIGIN = 0x100000C8, LENGTH = 0x7F38 /* 32k */
+  RamAHB32 (rwx) : ORIGIN = 0x2007c000, LENGTH = 0x8000 /* 32k */
+
+}
+  /* Define a symbol for the top of each memory region */
+  __top_MFlash512 = 0x0 + 0x80000;
+  __top_RamLoc32 = 0x10000000 + 0x8000;
+  __top_RamAHB32 = 0x2007c000 + 0x8000;
+
+ENTRY(ResetISR)
+
+SECTIONS
+{
+
+    /* MAIN TEXT SECTION */ 
+    .text : ALIGN(4)
+    {
+        FILL(0xff)
+        KEEP(*(.isr_vector))
+        
+        /* Global Section Table */
+        . = ALIGN(4) ;
+        __section_table_start = .;
+        __data_section_table = .;
+        LONG(LOADADDR(.data));
+        LONG(    ADDR(.data)) ;
+        LONG(  SIZEOF(.data));
+        LONG(LOADADDR(.data_RAM2));
+        LONG(    ADDR(.data_RAM2)) ;
+        LONG(  SIZEOF(.data_RAM2));
+        __data_section_table_end = .;
+        __bss_section_table = .;
+        LONG(    ADDR(.bss));
+        LONG(  SIZEOF(.bss));
+        LONG(    ADDR(.bss_RAM2));
+        LONG(  SIZEOF(.bss_RAM2));
+        __bss_section_table_end = .;
+        __section_table_end = . ;
+        /* End of Global Section Table */
+        
+
+        *(.after_vectors*)
+        
+        *(.text*)
+        *(.rodata .rodata.*)
+        . = ALIGN(4);
+        
+        /* C++ constructors etc */
+        . = ALIGN(4);
+        KEEP(*(.init))
+        
+        . = ALIGN(4);
+        __preinit_array_start = .;
+        KEEP (*(.preinit_array))
+        __preinit_array_end = .;
+        
+        . = ALIGN(4);
+        __init_array_start = .;
+        KEEP (*(SORT(.init_array.*)))
+        KEEP (*(.init_array))
+        __init_array_end = .;
+        
+        KEEP(*(.fini));
+        
+        . = ALIGN(0x4);
+        KEEP (*crtbegin.o(.ctors))
+        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+        KEEP (*(SORT(.ctors.*)))
+        KEEP (*crtend.o(.ctors))
+        
+        . = ALIGN(0x4);
+        KEEP (*crtbegin.o(.dtors))
+        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+        KEEP (*(SORT(.dtors.*)))
+        KEEP (*crtend.o(.dtors))
+        /* End C++ */
+    } > MFlash512
+
+    /*
+     * for exception handling/unwind - some Newlib functions (in common
+     * with C++ and STDC++) use this.
+     */
+    .ARM.extab : ALIGN(4)
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > MFlash512
+    __exidx_start = .;
+    
+    .ARM.exidx : ALIGN(4)
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > MFlash512
+    __exidx_end = .;
+    
+    _etext = .;
+        
+    
+    .data_RAM2 : ALIGN(4)
+    {
+       FILL(0xff)
+        *(.data.$RAM2*)
+        *(.data.$RamAHB32*)
+       . = ALIGN(4) ;
+    } > RamAHB32 AT>MFlash512
+    
+    /* MAIN DATA SECTION */
+
+    .uninit_RESERVED : ALIGN(4)
+    {
+        KEEP(*(.bss.$RESERVED*))
+    } > RamLoc32
+
+    .data : ALIGN(4)
+    {
+        FILL(0xff)
+        _data = .;
+        *(vtable)
+        *(.data*)
+        . = ALIGN(4) ;
+        _edata = .;
+    } > RamLoc32 AT>MFlash512
+
+    
+    .bss_RAM2 : ALIGN(4)
+    {
+        *(.bss.$RAM2*)
+        *(.bss.$RamAHB32*)
+       . = ALIGN(4) ;
+    } > RamAHB32
+
+    /* MAIN BSS SECTION */
+    .bss : ALIGN(4)
+    {
+        _bss = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4) ;
+        _ebss = .;
+        PROVIDE(end = .);
+    } > RamLoc32
+    
+    PROVIDE(_pvHeapStart = .);
+    PROVIDE(_vStackTop = __top_RamLoc32 - 0);
+}