Which is the instruction set for the AVR assembler?

Which is the instruction set for the AVR assembler?

The instruction set of the AVR family of microcontrollers is only briefly described, refer to the AVR Data Book (also available on CD-ROM) in order to get more detailed knowl-edge of the instruction set for the different microcontrollers. To get quickly started, the Quick-Start Tutorial is an easy way to get familiar with the Atmel AVR Assembler.

Which is EEPROM core for AVR ASM?

The ATtiny13 runs at 1.2MHz ( 9.6MHz Oscillator divided by 8 ) with 1K of RAM and 64 Bytes of EEPROM. The example programs should run on the Attiny13, ATtiny25, ATtiny45 or ATtiny85. The difference between these chips are basically the amount of Flash Ram for Program Memory. The circuits & code should be easy to adapt to most any AVR Core chips.

How many registers are there in the AVR?

There are 32 internal registers in the AVRs typically referred to as R0-R31. The most often used is R16-R31 because they are easier to use. They can be loaded directly with a constant. For example, if you want to load 100 into register R16 with 100 you would use:

How to use ruin and Weson AVR assembly optimization?

Ruin & Weson Avr assembly optimization – A deeper dive into assembler. Currently enjoying retirement and working on projects without pressure, deadlines or any kind of management. Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

Do you need register numbers for AVR assembly?

Important note: gnu as allows to use register numbers ( ldi 16, 0xC3) as well as register names ( ldi r16, 0xC3 ). The macro above requires register numbers, so that all my assembler sources includes avr_reg_numbers.h that contains defines like

How do you load a byte in AVR?

You need to load each byte separately, using one ld / ldi / ldd / lds /whatever instruction for each byte / each destination register. (There is an instruction to copy a pair of registers to another pair, upported on many modern AVR CPUs, (see @ReAl’s answer ), but not load or load-immediate.

Is the GNU C compiler for Atmel AVR RISC processors?

The GNU C compiler for Atmel AVR RISC processors offers, to embed assembly language code intoC programs. This cool feature may be used for manually optimizing time critical parts of the softwareor to use specific processor instruction, which are not available in the C language.