Problems with multiple SD card

[argentario84]

Hi, i have a project that write on SD card data from GPS and MPU6050 every 250ms with ESP32 (CS= Pin 5)

I have 4 SD card.

1. an old one that i can initialize and mount
   https://i.etsystatic.com/25910604/r/il/61ae76/4951623534/il_794xN.4951623534_pjuc.jpg

The problem with this card is that sometimes i get strange chars instead of good one

80424;10025825;435606333;114480000;7;0.20;1.00;-0.00;-0.00;-0.01;*
80424;10025825;435606333;114480000;7;0.20;1.00;-0.00;-0.00;-0.01;*
80424;10025825;435606333;114480000;7;0.20;1.00;-0.00;-0.00�'
01;*
80424;10025825;4356063 9+�14480000;7;0.20;1.00;-0.00;-
$ �;-0.01;*
80424;10025825;435:'�33;114480000;7;0.20;1.00;-0.00;-0.00;-0.01;*
80424;10025825;435606333;114480000;7;0.20;1.00;-0.00;-0.00;-0.01;*
80424;10025825;435606333;114480000;7;0.20;1.00;-0.00;-0.00;-0.01;*
80424;10025825;435606333;114480000;7;0.20;1.00;-0.00;-0.00;-0.01;*

_myFile = _sd.open(_nameFile, O_WRITE | O_APPEND | O_CREAT); _myFile.println(_strTempSDcardData); _myFile.close();

I print the content of _strTemSDcardData in serial and is good so the error is on the writing on the card.
I thinked the reason was old card so i tried others card

2. a new one (arrived yesterday)
   https://m.media-amazon.com/images/G/29/apparel/rcxgs/tile._CB483369964_.gif
   formatted fat32 with SD card formatter

i obtain:
SD: Mount failed
08:28:10.425 -> SD errorCode: SD_CARD_ERROR_ACMD41 = 0x17
08:28:10.458 -> SD errorData = 0x1

3. SanDisk Ultra 80 MB/s 64 GB SDXC
   formatted exFat
   https://i.ebayimg.com/images/g/IokAAOSwhaBasYLY/s-l500.jpg
   I obtain:
   08:24:53.850 -> SD errorCode: SD_CARD_ERROR_ACMD41 = 0x17
   08:24:53.884 -> SD errorData = 0xff

4. Microsd with SdAdapter
   Sandisk Ultra 128Gb
   https://i.ebayimg.com/images/g/SkkAAOSw~vJl-qxw/s-l500.jpg
   formatted exFat

I obtain:
08:27:24.461 -> SD errorCode: SD_CARD_ERROR_ACMD41 = 0x17
08:27:24.494 -> SD errorData = 0xff

Connection are good i check with tester and the first SD card initialize and write

I'm getting crazy to solve this problem, why i can't initialize other sd? why the first one get strange char?
if (!_sd.begin(SS, SD_SCK_MHZ(2))) {
i tried different MHZ but the errors still come

Thanks in advance for possible answers.

[greiman]

I have no idea. You say:

"Connection are good i check with tester and the first SD card initialize and write"

but all these errors look like wiring/ hardware problems.

[argentario84]

I solved the problem of strange chars.

Instead of writing every 250ms i concatenate the string and write the data in SD every 10 GPS points.
if (_strTempSDcardData != "0;") { if (val == 10) { _newInsert = false; digitalWrite(PINOUT, HIGH); _myFile = _sd.open(_nameFile, O_WRITE | O_APPEND | O_CREAT); _myFile.print(myS); _myFile.close(); delay(500); val = 0; myS = ""; } else { myS += _strTempSDcardData; val++; } }

Wiring seems ok but i think are too long and to much noise for access SD every 250ms? Could this be the cause of the failure of the other cards to initialize?

[greiman]

Wiring seems ok but i think are too long and to much noise for access SD every 250ms? Could this be the cause of the failure of the other cards to initialize?

I really can't guess what causes hardware problems without being able to put a scope or logic analyzer on the SD card.