AVR Hardware Connections and Flash Loading

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Presentation transcript:

AVR Hardware Connections and Flash Loading Sepehr Naimi www.NicerLand.com

Topics AVR Pins AVR simplest connections What is inside a hex file? Loading a hex file into flash

ATmega328 pins Clears all the registers and restart the execution of program Provides supply voltage to the chip. It should be connected to +5 Reference voltage for ADC These pins are used to connect external crystal or RC oscillator Supply voltage for ADC. Connect it to VCC

AVR simplest connection

AVR Programming Parallel programming ISP SPI JTAG Boot loader

ISP (ICSP) socket

Arduino Uno

Inside a HEX file Type of line: 00: there are more lines to come after This line. 01: this is the last line 02: Segment address This is a 16-bit address; The loader places the first byte of data into this memory address. It can address 64k locations Each line starts with a colon. how many bytes are in the line. Real Data Checksum