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Cool Components Workshop Board
The workshop breakout board is a simple, compact board for experimenting with the Mbed. It offers a micro SD card slot, USB A, USB B, and ethernet port (with magnetics). In addition, each mbed pin can be connected to via a solderless header.
Orientation : A simple thing, but lots of people get it wrong. The mbed should be inserted into the board socket so that its USB mini B connector is directly over the mini SD slot.
SD Card Test Code : (This code or probably the library it uses does not work with 100% of SD cards)
#include "mbed.h" #include "SDFileSystem.h" SDFileSystem sd(p5, p6, p7, p8, "sd"); // mosi, miso, sclk, cs, name DigitalOut myled1(LED1); DigitalOut myled3(LED3); int main() { printf("Hello World!\n"); myled3=1; FILE *fp = fopen("/sd/sdtest.txt", "w"); if(fp == NULL) { error("Could not open file for write\n"); myled1=1; myled3=0; } fprintf(fp, "If you're reading this text in a file, your SD card has been written to..."); fclose(fp); }
Ethernet Jack Test Code :
#include "mbed.h" #include "HTTPClient.h" DigitalOut led(LED1); HTTPClient http("monkeychuff", // Brings up the device with static IP address and domain name. IPv4(192,168,0,123), // IPv4 address IPv4(255,255,255,0), // netmask IPv4(192,168,0,1), // default gateway IPv4(192,168,0,1)); // dns server LocalFileSystem local("local"); /** * Request a google search for HelloWorld and display the first 2000 characters * of the page source on the serial terminal. */ int main(void) { char url[256]; // Open a file to write. FILE *fd = fopen("/local/hello.htm", "w"); // Insert the search term into the URL sprintf(url, "http://www.coolcomponents.co.uk/catalog/advanced_search_result.php?keywords=", "mbed"); // Request a page and store it into a file. http.get(url, fd); // Close the file. fclose(fd); // The file is written on the local disk. // "/hello.htm" Have a look. // Work is done! while(1) { led = !led; wait(0.2); } }