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
• Schematic photo vvv
• Functionality photo vvv

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!

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

        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

--- a/semihost_api.h	Tue Jan 08 12:46:36 2013 +0000
+++ b/semihost_api.h	Wed Jan 16 12:56:34 2013 +0000
@@ -29,6 +29,7 @@
 extern "C" {
 #endif
 
+#if DEVICE_SEMIHOST
 /* __semihost intrinsic
  This intrinsic inserts an SVC or BKPT instruction into the instruction stream
  generated by the compiler. It enables you to make semihosting calls from C or
@@ -41,17 +42,13 @@
 
 /* SWI numbers for RDI (Angel) monitors */
 #ifdef __thumb__
-#define AngelSWI            0xAB
+#   define AngelSWI            0xAB
+#   define AngelSWIInsn        "bkpt"
+#   define AngelSWIAsm          bkpt
 #else
-#define AngelSWI            0x123456
-#endif
-/* For Thumb-2 code use the BKPT instruction instead of SWI */
-#ifdef __thumb2__
-#define AngelSWIInsn        "bkpt"
-#define AngelSWIAsm          bkpt
-#else
-#define AngelSWIInsn        "swi"
-#define AngelSWIAsm          swi
+#   define AngelSWI            0x123456
+#   define AngelSWIInsn        "swi"
+#   define AngelSWIAsm          swi
 #endif
 
 inline int __semihost(int reason, const void *arg) {
@@ -66,7 +63,7 @@
                    changed by a system call, so they should not be kept in
                    registers. Note: we are assuming the manual is right and
                    Angel is respecting the APCS.  */
-    
+
     return value;
 }
 
@@ -95,6 +92,8 @@
 int semihost_connected(void);
 int semihost_disabledebug(void);
 
+#endif
+
 #ifdef __cplusplus
 }
 #endif