Using Shift register (74hc595) in LARGE led matrix

Started by 2011...@iiitdmj.ac.in in AVRclub10 years ago 1 reply

Dear all, I made a LED matrix (8x14) using atmega8L without using any shift register, to make it larger (CASCADING) i need to use shift...

Dear all, I made a LED matrix (8x14) using atmega8L without using any shift register, to make it larger (CASCADING) i need to use shift register. I have seen many tutorials but none has provided the code, So if any one can provide me the code (or atleast the shifting function ) I will be very thankful. I know the concept of POV, as i have already made a working LED matrix , I JUST NEED TO LEA...


Handling comms timeouts with AVR32UC3B0512

Started by Andrew in AVRclub10 years ago 1 reply

Hi, I need to be able to handle comms timeouts with my project. I have read the relevant sections in the data sheet, but found information...

Hi, I need to be able to handle comms timeouts with my project. I have read the relevant sections in the data sheet, but found information lacking. I have modified the following function to initialise timeouts: int usart_init_rs232(volatile struct avr32_usart_t * usart, struct usart_options_t * opt, long cpu_hz) { int retval; /* Reset the usart and shutdown RX and TX */ usart_res...


Winavr or Atmel Studio 6

Started by philipman2001 in AVRclub10 years ago 4 replies

As a Atmel beginner, which route should I go. Should I go with Atmel Studio or go the gcc route with winavr? Appreciate your...

As a Atmel beginner, which route should I go. Should I go with Atmel Studio or go the gcc route with winavr? Appreciate your opinions? ------------------------------------


Bitmap not being displayed correctly

Started by Andrew in AVRclub10 years ago 7 replies

Hi, I am working in a system using an AT32UC3B512, and a colour touchscreen display (which is driven using an SSD1963 controller). I can...

Hi, I am working in a system using an AT32UC3B512, and a colour touchscreen display (which is driven using an SSD1963 controller). I can display bit maps on the screen provided their width is dead on 96 pixels. If I make the width any different then they don't display properly. My function for writing the bitmap is: void PutImage1BPP(uint16_t left, uint16_t top, const GLYPH_HEADER...


SD Card CMD1 error - Card not init.

Started by gigillo74 in AVRclub10 years ago

Dear all, i try to init my SD card with ATMEGA8 and i don't reach the goal becouse the CMD1 don't return 0x00. I attach my ASM code and i ask...

Dear all, i try to init my SD card with ATMEGA8 and i don't reach the goal becouse the CMD1 don't return 0x00. I attach my ASM code and i ask someone if can explain me if there is a mistake in code. Thank You. Luigi. [CODE];******************************************************** ;* LIBRERIA DI FUNZIONI PER UTILIZZO DI SD CARD * ;* * ;* Nome: SD.inc * ;* Versione: 1.0...


Interface AVR with ADE-7751

Started by "mos...@ymail.com" in AVRclub11 years ago 1 reply

Hello. I want to interface Atmel microcontroller with Energy metering IC ADE-7751 for measuring power. Does any one have any idea or experience...

Hello. I want to interface Atmel microcontroller with Energy metering IC ADE-7751 for measuring power. Does any one have any idea or experience about it? ------------------------------------


error installing AVR studio4

Started by Dr Javaid Iqbal in AVRclub11 years ago 4 replies

Hi All I am trying to install AVR studio4 but getting following error. I am using Laptop HP DV6, windows Vista. An error (Error Code: -5009 :...

Hi All I am trying to install AVR studio4 but getting following error. I am using Laptop HP DV6, windows Vista. An error (Error Code: -5009 : 0x8000ffff) has occurred while running the setup. Please make sure that you have finished any previous setup and closed other applications. Error Code: -5009 : 0x8000ffff Error Information: > Kernel\IScriptWrapper.cpp (19) > Kernel\ObjectWrapper.cpp


serial to usb communication

Started by piyush_pandey_011 in AVRclub11 years ago 7 replies

hello to all guys I want to develop a code through which I can communicate through the usb to serial communication with my avr board. So I...

hello to all guys I want to develop a code through which I can communicate through the usb to serial communication with my avr board. So I want to know that how should I proceed in this direction. and noote I don't want to use the FTDI usb chips for this purpose. Thank you ------------------------------------


interfacing transceiver with AVR

Started by piyush_pandey_011 in AVRclub11 years ago 7 replies

hello guys I am using two atmega 16 avr boards and I want to intercommunicate between these two boards with the help of a transceiver. So...

hello guys I am using two atmega 16 avr boards and I want to intercommunicate between these two boards with the help of a transceiver. So can any body tell me any cheap transceiver which can be easily interfaced with the avr microcontroller and is easily available too. Thank you ------------------------------------


connect memory cards with avr

Started by Imad Ir in AVRclub11 years ago 1 reply

Hi, First, I developed AVR programs using code vision environment and assembly. I need to connect AtMega16 with a memory card - which used...

Hi, First, I developed AVR programs using code vision environment and assembly. I need to connect AtMega16 with a memory card - which used with digital cam= eras, mobile=A0phones, etc ... -=A0 1.=A0Could you please help me to deal with it?=A0 2.=A0What libraries I need to have? 3.=A0Have you any practical tutorials can help me (or simple examples can g= uide me)? Any help will be a...


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