Arduino Atmega128 SDcard Reading and Writing

Using Arduino Microcontrollers
#1

I connected an SDcard to my Atmega128 Board.
CS,SCK,MOSI,MISO = PB0,PB1,PB2,PB3 -> SDcard

I tried compiling the SD Lib example for Read Write Test - but it always Fails.
I tried a few standard 5V Arduino SDcard / MicroSDcard slots - but same result.

Is the Arduino SD Lib code / Registers compatible with the Atmega128 ?

#2

It seems that the compiling Atmega128 results in using the Arduino328 SPI Pins:

Initializing SD card…
SD:chipSelectPin = 8
SD:SS_PIN = 10
SD:SPI_SCK_PIN = 13
SD:SPI_MOSI_PIN = 11
SD:SPI_MISO_PIN = 12

SD:cardCommand => 255
SD:cardCommand => 255
…
initialization fails !

#3

Sd2PinMap.h is wrong - No Atmega128 definition

… just more Patches that I need to write …

#4

Fixed ... Modified the SD Lib - WORKS !

#5

I also needed and patched :

  • Boards.txt , pins_arduino.h missing pins (still not right - crumbuino128 besides missing Pins - also has misaligned Pins - need to fix more)

  • Xmem - again no Atmeag128 handling/defs etc

#6

Initializing SD card...
SD:chipSelectPin = 8
SD:SS_PIN = 8
SD:SPI_SCK_PIN = 9
SPI_MOSI_PIN = 10
SD:SPI_MISO_PIN = 11
SD:cardCommand() => 1
SD:cardCommand() => 1
SD:cardCommand() => 1
SD:cardCommand() => 1
SD:cardCommand() => 1
SD:cardCommand() => 0
SD:cardCommand() => 0
SD:cardCommand() => 0
SD:cardCommand() => 0
initialization done.
SD:cardCommand() => 0
Writing to test.txt...
SD:cardCommand() => 0
SD:cardCommand() => 0
SD:cardCommand() => 0
SD:cardCommand() => 0
SD:cardCommand() => 0
SD:cardCommand() => 0
done.
test.txt:
SD:cardCommand() => 0
testing 1, 2, 3.
testing 1, 2, 3.

#7

Why not use the MegaCore instead? The SD library are working, the Arduino core is ported to it, and it got Optiboot! :slight_smile:

#8

I am looking into it.

But I have already started in updating the Arduino Libs.

#9