Example program for SD card shield on SPI pins D10-D13
Dependencies: SDFileSystem mbed
The program uses the standard Arduino shields SPI pins:
Signal | Pin |
SCK | D13 |
MISO | D12 |
MOSI | D11 |
CS | D10 |
Note that this shield doesn't use the standard SPI pins, but relies on non-standard 6-pin SPI header located at the shield bottom. To make it work you will have to bridge those pins as shown on the image (the green SPI pins).
Signal | Pin 1 | Pin 2 |
MOSI | D11 | SPI4 |
MISO | D12 | SPI1 |
SCK | D13 | SPI3 |
CS | D10 | D4 |
main.cpp
- Committer:
- screamer
- Date:
- 2015-02-13
- Revision:
- 4:0928d6e00f01
- Parent:
- 3:5edc67dee8b7
File content as of revision 4:0928d6e00f01:
/* Copyright (c) 2010-2011 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "mbed.h" #include "SDFileSystem.h" Serial pc(USBTX, USBRX); SDFileSystem sd(D11, D12, D13, D10, "sd"); // MOSI, MISO, SCK, CS FILE *fp; int main() { wait(2); pc.printf("Initializing\r\n"); fp = fopen("/sd/hello.txt", "r"); if (fp != NULL) { fclose(fp); remove("/sd/hello.txt"); pc.printf("Remove an existing file with the same name\r\n"); } fp = fopen("/sd/hello.txt", "w"); if (fp == NULL) { pc.printf("Unable to write the file\r\n"); } else { fprintf(fp, "mbed SDCard application!"); fclose(fp); pc.printf("File successfully written!\r\n"); } }