Writing to SD card

Started by Jake Vickers in AVRclub10 years ago 1 reply

I have an Atmega640 (also have a couple 64's) here and would like to gather some data from SPI/analog devices and record the data in a text...

I have an Atmega640 (also have a couple 64's) here and would like to gather some data from SPI/analog devices and record the data in a text file on an SD card. I've searched around for routines on writing to an SD card, but for everyone I've seen that says it works, there's another saying that it doesn't work. Has anyone actually done this (write to an SD card) that can if nothing else ...


Download Firmware to USBasp

Started by Marteen Samuel in AVRclub10 years ago 4 replies

Hi all, I was found interest article about USBasp, device that can help us to download our hex file to our AVR microcontroller...

Hi all, I was found interest article about USBasp, device that can help us to download our hex file to our AVR microcontroller (www.fischl.de/usbasp) and I interested to build it. But when i try to search information about it i don't get any information about how to download the firmware to the device (USBasp). So, if anyone who had tried or had experience about how to download firmware to ...


Recording audio with Atmel

Started by jakev6 in AVRclub10 years ago 1 reply

I'm playing with an Atmega 640 and want to record audio. "AM radio" quality is fine, even mono. I'm using a SD card via SPI and would like to...

I'm playing with an Atmega 640 and want to record audio. "AM radio" quality is fine, even mono. I'm using a SD card via SPI and would like to record the audio on the SD card. Can anyone point me in the right direction as to what I need to perform this? Thanks! ------------------------------------


Audio recording

Started by Jake Vickers in AVRclub10 years ago 4 replies

I'm playing with an Atmega 640, and would like to know how to record audio with it. Low quality - "am radio" is fine. I'm going to record to a...

I'm playing with an Atmega 640, and would like to know how to record audio with it. Low quality - "am radio" is fine. I'm going to record to a SD card and will be grabbing some data from SPI devices. Any pointers in the right direction are appreciated! ------------------------------------


Timer Interrupt creates problem

Started by "Prashant D. Kharade" in AVRclub10 years ago 9 replies

Hello,=0D =0D =0D =0D I am a new to Embedded world. I have chosen AVR series to work=0D =0D I am doing a Datalogger project.=0D =0D ...

Hello,=0D =0D =0D =0D I am a new to Embedded world. I have chosen AVR series to work=0D =0D I am doing a Datalogger project.=0D =0D =0D =0D Facing a problem during the execution. =0D =0D I am sequentially switching the relays, measuring the ADC count & sending t= o UART for checking purpose.=0D =0D I have tried my best & step by step as suggested, but still there is proble= m.=0D...


USB ISP programmer (or Jtag / debugWIRE debugger)

Started by Felipe Uderman in AVRclub10 years ago 4 replies

Hello list, I am looking for a cheap USB ISP programer for the AVR familly. Can you giv= e me some sugestions? In fact, what I really want...

Hello list, I am looking for a cheap USB ISP programer for the AVR familly. Can you giv= e me some sugestions? In fact, what I really want was a debugger. But I noticed that many AVR devices don=B4t support JTAG. And I found out about this debugWIRE interfac= e, that seens to have more devices compatible, that I have never heard about before. I also noticed that the JTAG debbugers usua...


serial interface using matlab

Started by mahmoud ahmed in AVRclub10 years ago 2 replies

hi everybody=20 =A0 how are you? i make project weather station and i need to interface between= the microcontroller atmega8535 and the matlab...

hi everybody=20 =A0 how are you? i make project weather station and i need to interface between= the microcontroller atmega8535 and the matlab (GUI) to collect data that m= easured=20 like temperature - wind speed -wind direction-pressure=20 can anybody help me in interface? i need data to interface?=A0 =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=20 =20=20=20=20=20=20 -------...


Write in EEprom

Started by rahmatoolah abedini in AVRclub10 years ago 7 replies

Hi friends: I=A2m facing with a problem. I=A2m working with codevision and Atmega8. I n= eed to save a integer number in EEprom before the...

Hi friends: I=A2m facing with a problem. I=A2m working with codevision and Atmega8. I n= eed to save a integer number in EEprom before the system is turning off, th= en I have to write that number in EEprom in Brown Reset interrupt, how can = I do that. How can I write in Brown Reset Interrut. Best regardsAbedini =20=20=20=20=20=20 ------------------------------------


ATtiny44 programming

Started by ggs793 in AVRclub10 years ago 3 replies

Does anybody know of a DIY ATtiny44 programmer? ------------------------------------

Does anybody know of a DIY ATtiny44 programmer? ------------------------------------


ATmega1284P details

Started by Sharad Bagri in AVRclub10 years ago 1 reply

Hi I need the following information about ATmega1284P. 1) Is it easily available? i.e. is it frequently used for designing. 2) what is its...

Hi I need the following information about ATmega1284P. 1) Is it easily available? i.e. is it frequently used for designing. 2) what is its cost? 3) In the comparison sheet in the RTC column Yes was written. I want to know whether RTC is there inside or does it mean that it provides support for connecting RTC.. This questions may be too childish but please reply as I don't have much...


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