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Code Issues Releases Activity

Adding CS pin parameter to SD.begin(). Defaults to 4 (for Arduino Ethernet Shield).

Browse Source 
http://code.google.com/p/arduino/issues/detail?id=400
This commit is contained in:
David A. Mellis 2010-11-14 11:48:21 -05:00
parent 8629da8243
commit 6cbb866123
2 changed files with 9 additions and 8 deletions
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10
libraries/SD/SD.cpp
View File

@ -52,10 +52,6 @@
#include "SD.h" #include "SD.h"
// Use this to configure the chip select pin of the SD card.
#define SD_CARD_CHIP_SELECT_PIN 4 // For use with Arduino Ethernet Shield
// Used by `getNextPathComponent` // Used by `getNextPathComponent`
#define MAX_COMPONENT_LEN 12 // What is max length? #define MAX_COMPONENT_LEN 12 // What is max length?
#define PATH_COMPONENT_BUFFER_LEN MAX_COMPONENT_LEN+1 #define PATH_COMPONENT_BUFFER_LEN MAX_COMPONENT_LEN+1
@ -311,7 +307,9 @@ boolean callback_openPath(SdFile& parentDir, char *filePathComponent,
/* Implementation of class used to create `SDCard` object. */ /* Implementation of class used to create `SDCard` object. */
void SDClass::begin() {
void SDClass::begin(uint8_t csPin) {
/* /*
Performs the initialisation required by the sdfatlib library. Performs the initialisation required by the sdfatlib library.
@ -320,7 +318,7 @@ void SDClass::begin() {
*/ */
// TODO: Allow chip select pin to be supplied? // TODO: Allow chip select pin to be supplied?
if (!(card.init(SPI_HALF_SPEED, SD_CARD_CHIP_SELECT_PIN) if (!(card.init(SPI_HALF_SPEED, csPin)
&& volume.init(card) && root.openRoot(volume))) { && volume.init(card) && root.openRoot(volume))) {
while (true) { while (true) {
// Bail // Bail

7
libraries/SD/SD.h
View File

@ -1,6 +1,6 @@
/* /*
MemoryCard - a slightly more friendly wrapper for sdfatlib SD - a slightly more friendly wrapper for sdfatlib
This library aims to expose a subset of SD card functionality This library aims to expose a subset of SD card functionality
in the form of a higher level "wrapper" object. in the form of a higher level "wrapper" object.
@ -20,6 +20,9 @@
#include <utility/SdFat.h> #include <utility/SdFat.h>
#include <utility/SdFatUtil.h> #include <utility/SdFatUtil.h>
// Use this to configure the chip select pin of the SD card.
#define SD_CARD_CHIP_SELECT_PIN 4 // For use with Arduino Ethernet Shield
class SDClass { class SDClass {
private: private:
@ -32,7 +35,7 @@ class SDClass {
public: public:
// This needs to be called to set up the connection to the memory card // This needs to be called to set up the connection to the memory card
// before other methods are used. // before other methods are used.
void begin(); void begin(uint8_t csPin = SD_CARD_CHIP_SELECT_PIN);
// Open the specified file/directory with the supplied mode (e.g. read or // Open the specified file/directory with the supplied mode (e.g. read or
// write, etc). Once opened the file can be accessed via the // write, etc). Once opened the file can be accessed via the