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: I2C.h

Revision:
11:1c1ebd0324fa
Parent:
4:5d1359a283bc
Child:
12:f63353af7be8
diff -r fcb9359f0959 -r 1c1ebd0324fa I2C.h
--- a/I2C.h	Thu May 14 14:44:00 2009 +0000
+++ b/I2C.h	Fri Aug 28 12:10:11 2009 +0000
@@ -1,80 +1,88 @@
 /* mbed Microcontroller Library - I2C
- * Copyright (c) 2007-2008, sford
- */
+ * Copyright (c) 2007-2009 ARM Limited. All rights reserved.
+ * sford
+ */ 
  
 #ifndef MBED_I2C_H
 #define MBED_I2C_H
 
+#include "platform.h"
+#include "PinNames.h"
+#include "PeripheralNames.h"
 #include "Base.h"
 
 namespace mbed {
 
 /* Class: I2C
  *  An I2C Master, used for communicating with I2C slave devices
+ *
+ * Example:
+ * > // Read from I2C slave at address 0x1234
+ * >
+ * > #include "mbed.h"
+ * >
+ * > I2C i2c(p28, p27);
+ * >
+ * > int main() {
+ * >     int address = 0x1234;
+ * >     char data[2];
+ * >     i2c.read(address,data,2);
+ * >     // ...
+ * > }
  */
 class I2C : public Base {
 
 public:
 
-	/* Group: Configuration Methods */
+    /* Constructor: I2C
+     *  Create an I2C Master interface, connected to the specified pins
+     *
+     * Variables:
+     *  sda - I2C data line pin
+     *  scl - I2C clock line pin
+     */
+    I2C(PinName sda, PinName scl, const char *name = NULL);
 
-	/* Constructor: I2C
-	 *  Create an I2C Master interface, connected to the specified pins
-	 *
-	 * Variables:
-	 *  sda - I2C data line pin
-	 *  scl - I2C clock line pin
+    /* Function: frequency
+     *  Set the frequency of the I2C interface
+     *
+     * Variables:
+     *  hz - The bus frequency in hertz
+     */
+    void frequency(int hz);
+
+    /* Function: read
+     *  Read from an I2C slave
      *
-	 * Pin Options:
-	 *  (9, 10) or (28, 27)	 
-	 */
-	I2C(int sda, int scl, const char *name = NULL);
-	
-	/* Function: frequency
-	 *  Set the frequency of the I2C interface
-	 *
-	 * Variables:
-	 *  hz - The bus frequency in hertz
-	 */
-	void frequency(int hz);
-	
-	/* Group: Access Methods */
-		
-	/* Function: read
-	 *  Read from an I2C slave
-	 *
-	 * Variables:
-	 *  address - 7-bit I2C slave address (0-127)
-	 *  data - Pointer to the byte-array to read data in to 
-	 *  length - Number of bytes to read
-	 */ 
-	void read(int address, char* data, int length); 
+     * Variables:
+     *  address - 7-bit I2C slave address (0-127)
+     *  data - Pointer to the byte-array to read data in to 
+     *  length - Number of bytes to read
+     *  returns - 0 on success (ack), or 1 on failure (nack)
+     */ 
+    int read(int address, char *data, int length); 
 
-	/* Function: write
-	 *  Write to an I2C slave
-	 *
-	 * Variables:
-	 *  address - 7-bit I2C slave address (0-127)
-	 *  data - Pointer to the byte-array data to send 
-	 *  length - Number of bytes to send
-	 */ 
-	void write(int address, char* data, int length);
-
+    /* Function: write
+     *  Write to an I2C slave
+     *
+     * Variables:
+     *  address - 7-bit I2C slave address (0-127)
+     *  data - Pointer to the byte-array data to send 
+     *  length - Number of bytes to send
+     *  returns - 0 on success (ack), or 1 on failure (nack)
+     */ 
+    int write(int address, const char *data, int length);
+    
 protected:
 
-	void configure();
-	
-	int _id;
+    I2CName _i2c;
+    
+    void aquire();
+    static I2C *_owner;
+    int _hz;
 
-	int _uid;
-	static int _uidcounter;
-		
-	int _hz;
-	static int _config[3];	
-		
 };
 
-}
+} // namespace mbed
 
 #endif
-