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: rtc_time.h
- Revision:
- 14:20a79241b4a0
- Child:
- 27:7110ebee3484
diff -r a0336ede94ce -r 20a79241b4a0 rtc_time.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rtc_time.h Wed Oct 28 17:43:46 2009 +0000 @@ -0,0 +1,207 @@ +/* Title: time + * Implementation of the C time.h functions + * + * Provides mechanisms to set and read the current time, based + * on the microcontroller Real-Time Clock (RTC), plus some + * standard C manipulation and formating functions. + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > set_time(1256729737); // Set RTC time to Wed, 28 Oct 2009 11:35:37 + * > + * > while(1) { + * > time_t seconds = time(NULL); + * > + * > printf("Time as seconds since January 1, 1970 = %d\n", seconds); + * > + * > printf("Time as a basic string = %s", ctime(&seconds)); + * > + * > char buffer[32]; + * > strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds)); + * > printf("Time as a custom formatted string = %s", buffer); + * > + * > wait(1); + * > } + * > } + */ + +/* mbed Microcontroller Library - rtc_time + * Copyright (c) 2009 ARM Limited. All rights reserved. + * sford + */ + +#include <time.h> + +#ifdef __cplusplus +extern "C" { +#endif + +#if 0 // for documentation only +/* Function: time + * Get the current time + * + * Returns the current timestamp as the number of seconds since January 1, 1970 + * (the UNIX timestamp). The value is based on the current value of the + * microcontroller Real-Time Clock (RTC), which can be set using <set_time>. + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > time_t seconds = time(NULL); + * > printf("It is %d seconds since January 1, 1970\n", seconds); + * > } + * + * Variables: + * t - Pointer to a time_t to be set, or NULL if not used + * returns - Number of seconds since January 1, 1970 (the UNIX timestamp) + */ +time_t time(time_t *t); +#endif + +/* Function: set_time + * Set the current time + * + * Initialises and sets the time of the microcontroller Real-Time Clock (RTC) + * to the time represented by the number of seconds since January 1, 1970 + * (the UNIX timestamp). + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > set_time(1256729737); // Set time to Wed, 28 Oct 2009 11:35:37 + * > } + * + * Variables: + * t - Number of seconds since January 1, 1970 (the UNIX timestamp) + */ +void set_time(time_t t); + +#if 0 // for documentation only +/* Function: mktime + * Converts a tm structure in to a timestamp + * + * Converts the tm structure in to a timestamp in seconds since January 1, 1970 + * (the UNIX timestamp). The values of tm_wday and tm_yday of the tm structure + * are also updated to their appropriate values. + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > // setup time structure for Wed, 28 Oct 2009 11:35:37 + * > struct tm t; + * > t.tm_sec = 37; // 0-59 + * > t.tm_min = 35; // 0-59 + * > t.tm_hour = 11; // 0-23 + * > t.tm_mday = 28; // 1-31 + * > t.tm_mon = 9; // 0-11 + * > t.tm_year = 109; // year since 1900 + * > + * > // convert to timestamp and display (1256729737) + * > time_t seconds = mktime(&t); + * > printf("Time as seconds since January 1, 1970 = %d\n", seconds); + * > } + * + * Variables: + * t - The tm structure to convert + * returns - The converted timestamp + */ +time_t mktime(struct tm *t); +#endif + +#if 0 // for documentation only +/* Function: localtime + * Converts a timestamp in to a tm structure + * + * Converts the timestamp pointed to by t to a (statically allocated) + * tm structure. + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > time_t seconds = 1256729737; + * > struct tm *t = localtime(&seconds); + * > } + * + * Variables: + * t - Pointer to the timestamp + * returns - Pointer to the (statically allocated) tm structure + */ +struct tm *localtime(const time_t *t); +#endif + +#if 0 // for documentation only +/* Function: ctime + * Converts a timestamp to a human-readable string + * + * Converts a time_t timestamp in seconds since January 1, 1970 (the UNIX + * timestamp) to a human readable string format. The result is of the + * format: "Wed Oct 28 11:35:37 2009\n" + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > time_t seconds = time(NULL); + * > printf("Time as a string = %s", ctime(&seconds)); + * > } + * + * Variables: + * t - The timestamp to convert + * returns - Pointer to a (statically allocated) string containing the + * human readable representation, including a '\n' character + */ +char *ctime(const time_t *t); +#endif + +#if 0 // for documentation only +/* Function: strftime + * Converts a tm structure to a custom format human-readable string + * + * Creates a formated string from a tm structure, based on a string format + * specifier provided. + * + * Format Specifiers: + * %S - Second (00-59) + * %M - Minute (00-59) + * %H - Hour (00-23) + * %d - Day (01-31) + * %m - Month (01-12) + * %Y/%y - Year (2009/09) + * + * %A/%a - Weekday Name (Monday/Mon) + * %B/%b - Month Name (January/Jan) + * %I - 12 Hour Format (01-12) + * %p - "AM" or "PM" + * %X - Time (14:55:02) + * %x - Date (08/23/01) + * + * Example: + * > #include "mbed.h" + * > + * > int main() { + * > time_t seconds = time(NULL); + * > + * > char buffer[32]; + * > strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds)); + * > printf("Time as a formatted string = %s", buffer); + * > } + * + * Variables: + * buffer - String buffer to store the result + * max - Maximum number of characters to store in the buffer + * format - Format specifier string + * t - Pointer to the tm structure to convert + * returns - Number of characters copied + */ +size_t strftime(char *buffer, size_t max, const char *format, const struct tm *t); +#endif + +#ifdef __cplusplus +} +#endif