What are Port registers?
The PORT register is the latch for the data to be output. When the PORT is read, the device reads the levels present on the I/O pins (not the latch). This means that care should be taken with read-modify-write commands on the ports and changing the direction of a pin from an input to an output.
What is an ATtiny85?
ATtiny85 is a high performance, low power 8-bit microcontroller based on Advanced RISC Architecture. It has 8 Kbytes of In-System Programmable Flash and is popular because of its compact size and its features.
What’s the difference between using the pinMode () function and directly configuring the DDR registers when setting up the pins?
The main difference between pinMode and accessing the registers directly is the timing. If you use pinMode the Arduino reads the translation vom the Arduino pin number to the register/bit pair from the flash memory which needs some time.
What are PORTx and DDRx registers?
This register is used to configure the PORT pins as Input or Output. Writing 1’s to DDRx will make the corresponding PORTx pins as output. Similarly writing 0’s to DDRx will make the corresponding PORTx pins as Input.
What is Tris and port?
I’ll say quickly that TRIS register serves to set to “direction” of a PORT and its Pins (input or output), while PORT register lets you read the Pins’ state when used as inputsor outputs. There is also LAT register, which lets you drive the outputs correctly.
Does ATtiny85 have analog input?
This is happens with the ATtiny85. For example, the physical pin 7 is both the digital pin 2 and the analog pin 1. Digital pin 1 is the physical pin 6, and it has no analog input.
How do I program ATtiny85?
How to Program an Attiny85 From an Arduino Uno
- Step 1: Add Support for the ATtiny85 to the Arduino URL Board Manager.
- Step 2: Install the ATtiny Board Package.
- Step 3: Set the Arduino Uno Into ISP Mode.
- Step 4: How a Microcontrollers Pins Are Labeled.
- Step 5: Connecting the Arduino to the ATtiny Pins.
What is the difference between void setup () and void loop ()?
Void setup and void loop The code that you put inside void setup() will only run once, and that will be at the beginning of your program. One example is when you want to turn your robot on — that does not happen multiple times! In void loop(), your code will repeat over and over again.