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

I2C.h@43:e2ed12d17f06, 2012-10-26 (annotated)

Committer:
emilmont
Date:
Fri Oct 26 17:40:46 2012 +0100
Revision:
43:e2ed12d17f06
Parent:
27:7110ebee3484
Child:
44:24d45a770a51
Update documentation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon.ford@mbed.co.uk 0:82220227f4fa 1 /* mbed Microcontroller Library - I2C
emilmont 27:7110ebee3484 2 * Copyright (c) 2007-2011 ARM Limited. All rights reserved.
rolf.meyer@arm.com 11:1c1ebd0324fa 3 */
simon.ford@mbed.co.uk 0:82220227f4fa 4
simon.ford@mbed.co.uk 0:82220227f4fa 5 #ifndef MBED_I2C_H
simon.ford@mbed.co.uk 0:82220227f4fa 6 #define MBED_I2C_H
simon.ford@mbed.co.uk 0:82220227f4fa 7
emilmont 27:7110ebee3484 8 #include "device.h"
emilmont 27:7110ebee3484 9
emilmont 27:7110ebee3484 10 #if DEVICE_I2C
emilmont 27:7110ebee3484 11
rolf.meyer@arm.com 11:1c1ebd0324fa 12 #include "platform.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 13 #include "PinNames.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 14 #include "PeripheralNames.h"
simon.ford@mbed.co.uk 0:82220227f4fa 15 #include "Base.h"
simon.ford@mbed.co.uk 0:82220227f4fa 16
simon.ford@mbed.co.uk 0:82220227f4fa 17 namespace mbed {
simon.ford@mbed.co.uk 0:82220227f4fa 18
emilmont 43:e2ed12d17f06 19 /** An I2C Master, used for communicating with I2C slave devices
rolf.meyer@arm.com 11:1c1ebd0324fa 20 *
rolf.meyer@arm.com 11:1c1ebd0324fa 21 * Example:
emilmont 43:e2ed12d17f06 22 * @code
emilmont 43:e2ed12d17f06 23 * // Read from I2C slave at address 0x62
emilmont 43:e2ed12d17f06 24 *
emilmont 43:e2ed12d17f06 25 * #include "mbed.h"
emilmont 43:e2ed12d17f06 26 *
emilmont 43:e2ed12d17f06 27 * I2C i2c(p28, p27);
emilmont 43:e2ed12d17f06 28 *
emilmont 43:e2ed12d17f06 29 * int main() {
emilmont 43:e2ed12d17f06 30 * int address = 0x62;
emilmont 43:e2ed12d17f06 31 * char data[2];
emilmont 43:e2ed12d17f06 32 * i2c.read(address, data, 2);
emilmont 43:e2ed12d17f06 33 * }
emilmont 43:e2ed12d17f06 34 * @endcode
simon.ford@mbed.co.uk 0:82220227f4fa 35 */
simon.ford@mbed.co.uk 0:82220227f4fa 36 class I2C : public Base {
simon.ford@mbed.co.uk 0:82220227f4fa 37
simon.ford@mbed.co.uk 0:82220227f4fa 38 public:
simon.ford@mbed.co.uk 0:82220227f4fa 39
simon 20:029aa53d7323 40 enum RxStatus {
simon 20:029aa53d7323 41 NoData
simon 20:029aa53d7323 42 , MasterGeneralCall
simon 20:029aa53d7323 43 , MasterWrite
simon 20:029aa53d7323 44 , MasterRead
simon 20:029aa53d7323 45 };
simon 20:029aa53d7323 46
simon 21:3944f1e2fa4f 47 enum Acknowledge {
simon 21:3944f1e2fa4f 48 NoACK = 0
simon 21:3944f1e2fa4f 49 , ACK = 1
simon 21:3944f1e2fa4f 50 };
simon 21:3944f1e2fa4f 51
emilmont 43:e2ed12d17f06 52 /** Create an I2C Master interface, connected to the specified pins
rolf.meyer@arm.com 11:1c1ebd0324fa 53 *
emilmont 43:e2ed12d17f06 54 * @param sda I2C data line pin
emilmont 43:e2ed12d17f06 55 * @param scl I2C clock line pin
rolf.meyer@arm.com 11:1c1ebd0324fa 56 */
rolf.meyer@arm.com 11:1c1ebd0324fa 57 I2C(PinName sda, PinName scl, const char *name = NULL);
simon.ford@mbed.co.uk 0:82220227f4fa 58
emilmont 43:e2ed12d17f06 59 /** Set the frequency of the I2C interface
rolf.meyer@arm.com 11:1c1ebd0324fa 60 *
emilmont 43:e2ed12d17f06 61 * @param hz The bus frequency in hertz
rolf.meyer@arm.com 11:1c1ebd0324fa 62 */
rolf.meyer@arm.com 11:1c1ebd0324fa 63 void frequency(int hz);
rolf.meyer@arm.com 11:1c1ebd0324fa 64
emilmont 43:e2ed12d17f06 65 /** Read from an I2C slave
simon.ford@mbed.co.uk 0:82220227f4fa 66 *
emilmont 43:e2ed12d17f06 67 * Performs a complete read transaction. The bottom bit of
emilmont 43:e2ed12d17f06 68 * the address is forced to 1 to indicate a read.
rolf.meyer@arm.com 12:f63353af7be8 69 *
emilmont 43:e2ed12d17f06 70 * @param address 8-bit I2C slave address [ addr | 1 ]
emilmont 43:e2ed12d17f06 71 * @param data Pointer to the byte-array to read data in to
emilmont 43:e2ed12d17f06 72 * @param length Number of bytes to read
emilmont 43:e2ed12d17f06 73 * @param repeated Repeated start, true - don't send stop at end
emilmont 43:e2ed12d17f06 74 *
emilmont 43:e2ed12d17f06 75 * @returns
emilmont 43:e2ed12d17f06 76 * 0 on success (ack),
emilmont 43:e2ed12d17f06 77 * non-0 on failure (nack)
rolf.meyer@arm.com 11:1c1ebd0324fa 78 */
simon 20:029aa53d7323 79 int read(int address, char *data, int length, bool repeated = false);
simon.ford@mbed.co.uk 0:82220227f4fa 80
emilmont 43:e2ed12d17f06 81 /** Read a single byte from the I2C bus
simon 21:3944f1e2fa4f 82 *
emilmont 43:e2ed12d17f06 83 * @param ack indicates if the byte is to be acknowledged (1 = acknowledge)
emilmont 43:e2ed12d17f06 84 *
emilmont 43:e2ed12d17f06 85 * @returns
emilmont 43:e2ed12d17f06 86 * the byte read
simon 21:3944f1e2fa4f 87 */
simon 21:3944f1e2fa4f 88 int read(int ack);
simon 21:3944f1e2fa4f 89
emilmont 43:e2ed12d17f06 90 /** Write to an I2C slave
rolf.meyer@arm.com 11:1c1ebd0324fa 91 *
emilmont 43:e2ed12d17f06 92 * Performs a complete write transaction. The bottom bit of
emilmont 43:e2ed12d17f06 93 * the address is forced to 0 to indicate a write.
rolf.meyer@arm.com 12:f63353af7be8 94 *
emilmont 43:e2ed12d17f06 95 * @param address 8-bit I2C slave address [ addr | 0 ]
emilmont 43:e2ed12d17f06 96 * @param data Pointer to the byte-array data to send
emilmont 43:e2ed12d17f06 97 * @param length Number of bytes to send
emilmont 43:e2ed12d17f06 98 * @param repeated Repeated start, true - do not send stop at end
emilmont 43:e2ed12d17f06 99 *
emilmont 43:e2ed12d17f06 100 * @returns
emilmont 43:e2ed12d17f06 101 * 0 on success (ack),
emilmont 43:e2ed12d17f06 102 * non-0 on failure (nack)
rolf.meyer@arm.com 11:1c1ebd0324fa 103 */
simon 20:029aa53d7323 104 int write(int address, const char *data, int length, bool repeated = false);
simon 21:3944f1e2fa4f 105
emilmont 43:e2ed12d17f06 106 /** Write single byte out on the I2C bus
emilmont 43:e2ed12d17f06 107 *
emilmont 43:e2ed12d17f06 108 * @param data data to write out on bus
simon 21:3944f1e2fa4f 109 *
emilmont 43:e2ed12d17f06 110 * @returns
emilmont 43:e2ed12d17f06 111 * '1' if an ACK was received,
emilmont 43:e2ed12d17f06 112 * '0' otherwise
simon 21:3944f1e2fa4f 113 */
simon 21:3944f1e2fa4f 114 int write(int data);
simon 21:3944f1e2fa4f 115
emilmont 43:e2ed12d17f06 116 /** Creates a start condition on the I2C bus
simon 21:3944f1e2fa4f 117 */
simon 21:3944f1e2fa4f 118 void start(void);
simon 21:3944f1e2fa4f 119
emilmont 43:e2ed12d17f06 120 /** Creates a stop condition on the I2C bus
simon 21:3944f1e2fa4f 121 */
simon 21:3944f1e2fa4f 122 void stop(void);
simon 21:3944f1e2fa4f 123
simon.ford@mbed.co.uk 0:82220227f4fa 124 protected:
simon.ford@mbed.co.uk 0:82220227f4fa 125
rolf.meyer@arm.com 11:1c1ebd0324fa 126 void aquire();
simon 20:029aa53d7323 127
simon 20:029aa53d7323 128 I2CName _i2c;
simon 20:029aa53d7323 129 static I2C *_owner;
simon 20:029aa53d7323 130 int _hz;
simon.ford@mbed.co.uk 0:82220227f4fa 131
simon.ford@mbed.co.uk 0:82220227f4fa 132 };
simon.ford@mbed.co.uk 0:82220227f4fa 133
rolf.meyer@arm.com 11:1c1ebd0324fa 134 } // namespace mbed
simon.ford@mbed.co.uk 0:82220227f4fa 135
simon.ford@mbed.co.uk 1:6b7f447ca868 136 #endif
emilmont 27:7110ebee3484 137
emilmont 27:7110ebee3484 138 #endif
emilmont 27:7110ebee3484 139