dheeraj91
07-05-2011, 08:50 PM
I wanted to interface sd card to atmega32 and so built the pcb for it.The circuit that i built has the sd card connected to the spi ports through a cd 4050be.I used the other connections as in http://www.dharmanitech.com/2009/01/sd-card-interfacing-with-atmega8-fat32.html.I programmed the avr using the program sd_card.hex[version 2.3 present in the site] but the terminal says that sd card not detected.I tried using 3 different sd cards of different companies but the same result.I have given 3.3v to cd4050 and also the sd card, the mcu runs at 16mhz external crystal and at 5V.the chip select line of the sd card is given to portb.1 of the mega32 as given in the link above.
Please help me........
Please help me........