The official mbed C/C SDK provides the software platform and libraries to build your applications.
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(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
- Ethernet RJ45 connector is removed.
- http://mbed.org/components/Seeed-Ethernet-Shield-V20/ is the biggest hint to use Ethernet!
MostALL of components can be bought at Akizuki http://akizukidenshi.com/- But sorry, they do not send parts to abroad
- Pinout is changed!
arduino | 0.4.0 | 0.5.0 |
---|---|---|
D4 | p12 | p21 |
D5 | p11 | p22 |
MOSI_ | none | p11 |
MISO_ | none | p12 |
SCK_ | none | p13 |
This design has bug(s)
- I2C functional pin differs between 1768 and 11U24.
Fixed bugs here
- MiniUSB cable cannot be connected on mbed if you solder high-height electrolytic capacitor on C3.
- http://akizukidenshi.com/catalog/g/gP-05002/ is the solution to make this 100% AKIZUKI parts!
- the 6-pin ISP port is not inprimented in version 0.4.0
it will be fixed in later version 0.4.1/0.4.2/0.5.0This 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: SPIHalfDuplex.h
- Revision:
- 20:029aa53d7323
- Child:
- 27:7110ebee3484
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SPIHalfDuplex.h Thu Jun 03 11:17:50 2010 +0000 @@ -0,0 +1,113 @@ +/* mbed Microcontroller Library - SPI + * Copyright (c) 2010 ARM Limited. All rights reserved. + * jward + */ + +#ifndef MBED_SPIHALFDUPLEX_H +#define MBED_SPIHALFDUPLEX_H + +#include "SPI.h" + +namespace mbed { + +/* Class: SPIHalfDuplex + * A SPI half-duplex master, used for communicating with SPI slave devices + * over a shared data line. + * + * The default format is set to 8-bits for both master and slave, and a + * clock frequency of 1MHz + * + * Most SPI devies will also require Chip Select and Reset signals. These + * can be controlled using <DigitalOut> pins. + * + * Although this is for a shared data line, both MISO and MOSI are defined, + * and should be tied together externally to the mbed. This class handles + * the tri-stating of the MOSI pin. + * + * Example: + * > // Send a byte to a SPI half-duplex slave, and record the response + * > + * > #include "mbed.h" + * > + * > SPIHalfDuplex device(p5, p6, p7) // mosi, miso, sclk + * > + * > int main() { + * > int respone = device.write(0xAA); + * > } + */ + +class SPIHalfDuplex : public SPI { + +public: + + /* Constructor: SPIHalfDuplex + * Create a SPI half-duplex master connected to the specified pins + * + * Variables: + * mosi - SPI Master Out, Slave In pin + * miso - SPI Master In, Slave Out pin + * sclk - SPI Clock pin + * name - (optional) A string to identify the object + * + * Pin Options: + * (5, 6, 7) or (11, 12, 13) + * + * mosi or miso can be specfied as NC if not used + */ + SPIHalfDuplex(PinName mosi, PinName miso, PinName sclk, + const char *name = NULL); + +#if 0 // Inherited from SPI - documentation only + /* Function: format + * Configure the data transmission format + * + * Variables: + * bits - Number of bits per SPI frame (4 - 16) + * mode - Clock polarity and phase mode (0 - 3) + * + * > mode | POL PHA + * > -----+-------- + * > 0 | 0 0 + * > 1 | 0 1 + * > 2 | 1 0 + * > 3 | 1 1 + */ + void format(int bits, int mode = 0); + + /* Function: frequency + * Set the spi bus clock frequency + * + * Variables: + * hz - SCLK frequency in hz (default = 1MHz) + */ + void frequency(int hz = 1000000); +#endif + + /* Function: write + * Write to the SPI Slave and return the response + * + * Variables: + * value - Data to be sent to the SPI slave + * returns - Response from the SPI slave + */ + virtual int write(int value); + + /* Function: slave_format + * Set the number of databits expected from the slave, from 4-16 + * + * Variables: + * sbits - Number of expected bits in the slave response + */ + void slave_format(int sbits); + +protected: + + PinName _mosi; + PinName _miso; + int _sbits; + +}; // End of class + +} // End of namespace mbed + +#endif