Добрый день. Проблема в работоспособности Arduino nano + SD ридер + sd-карта. Ардуино не видит её,
перепробовал, на мой взгляд всё.
Arduino nano + SD ридер
Подключение:
GRD – GRD
VCC – 5V
MISO – D12
MOSI – D11
SCK – D13
CS – D10
Скетч cardinfo с сайта https://www.arduino.cc/ без изменений:
/*
SD card test
This example shows how use the utility libraries on which the'
SD library is based in order to get info about your SD card.
Very useful for testing a card when you're not sure whether its working or not.
The circuit:
* SD card attached to SPI bus as follows:
** MOSI - pin 11 on Arduino Uno/Duemilanove/Diecimila
** MISO - pin 12 on Arduino Uno/Duemilanove/Diecimila
** CLK - pin 13 on Arduino Uno/Duemilanove/Diecimila
** CS - depends on your SD card shield or module.
Pin 4 used here for consistency with other Arduino examples
created 28 Mar 2011
by Limor Fried
modified 16 Mar 2011
by Tom Igoe
*/
// include the SD library:
#include <SD.h>
// set up variables using the SD utility library functions:
Sd2Card card;
SdVolume volume;
SdFile root;
// change this to match your SD shield or module;
// Arduino Ethernet shield: pin 4
// Adafruit SD shields and modules: pin 10
// Sparkfun SD shield: pin 8
const int chipSelect = 4;
void setup()
{
Serial.begin(9600);
Serial.print("\nInitializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(10, OUTPUT); // change this to 53 on a mega
// we'll use the initialization code from the utility libraries
// since we're just testing if the card is working!
if (!card.init(SPI_HALF_SPEED, chipSelect)) {
Serial.println("initialization failed. Things to check:");
Serial.println("* is a card is inserted?");
Serial.println("* Is your wiring correct?");
Serial.println("* did you change the chipSelect pin to match your shield or module?");
return;
} else {
Serial.println("Wiring is correct and a card is present.");
}
// print the type of card
Serial.print("\nCard type: ");
switch(card.type()) {
case SD_CARD_TYPE_SD1:
Serial.println("SD1");
break;
case SD_CARD_TYPE_SD2:
Serial.println("SD2");
break;
case SD_CARD_TYPE_SDHC:
Serial.println("SDHC");
break;
default:
Serial.println("Unknown");
}
// Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
if (!volume.init(card)) {
Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
return;
}
// print the type and size of the first FAT-type volume
uint32_t volumesize;
Serial.print("\nVolume type is FAT");
Serial.println(volume.fatType(), DEC);
Serial.println();
volumesize = volume.blocksPerCluster(); // clusters are collections of blocks
volumesize *= volume.clusterCount(); // we'll have a lot of clusters
volumesize *= 512; // SD card blocks are always 512 bytes
Serial.print("Volume size (bytes): ");
Serial.println(volumesize);
Serial.print("Volume size (Kbytes): ");
volumesize /= 1024;
Serial.println(volumesize);
Serial.print("Volume size (Mbytes): ");
volumesize /= 1024;
Serial.println(volumesize);
Serial.println("\nFiles found on the card (name, date and size in bytes): ");
root.openRoot(volume);
// list all files in the card with date and size
root.ls(LS_R | LS_DATE | LS_SIZE);
}
void loop(void) {
}
Пробовал карту на 2 Гб и на 8 Гб (новые). Форматировал в FAT32 со стандартным
и всеми возможными другими размерами кластера - не помогает, ответ один:
Initializing SD card…initialization failed. Things to check:
- is a card is inserted?
- Is your wiring correct?
- did you change the chipSelect pin to match your shield or module?
При этом есть 8 Гб флешка из планшета, тоже fat32, которая отлично работает (использовать её не могу). Работает, если СS подключить
к D10 или к D4:
Initializing SD card…Wiring is correct and a card is present.
Card type: SDHC
Volume type is FAT32
Volume size (bytes): 3644850176
Volume size (Kbytes): 3559424
Volume size (Mbytes): 3476
Files found on the card (name, date and size in bytes):
LOST.DIR/ 2022-08-30 01:24:16
ANDROI~1/ 2023-12-31 20:35:26
ANDROID/ 2022-08-30 01:32:48
DATA/ 2024-04-06 15:20:02
NOMEDI~1 2022-08-30 01:24:16 0
COMGOO~1.MUS/ 2023-06-22 06:43:10
…
Если запитать ридер от 3V3 - не работает ни одна, в выводе:
Initializing SD card…initialization failed. Things to check:
- is a card is inserted?
- Is your wiring correct?
- did you change the chipSelect pin to match your shield or module?
Если СS отцепить совсем, то рабочая флешка планшета при питании 5В, скажет:
Initializing SD card…Wiring is correct and a card is present.
Card type: SDHC
Could not find FAT16/FAT32 partition.
Make sure you’ve formatted the card
Новая форматированная 8 Гб при тех же условиях скажет:
Initializing SD card…initialization failed. Things to check:
- is a card is inserted?
- Is your wiring correct?
- did you change the chipSelect pin to match your shield or module?
Иногда после Ардуины комп флешку не видит, лечится быстрым форматированием.
Впрочем, флешку на 2 Гб я все-таки запортачил так, что она не форматируется.
Подскажите, пожалуйста, если есть какие-нибудь мысли.