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Category: AVR

  • AVRHexFlashGUI: an AVRdude Hex Flasher GUI Application with Quick Flash Floating Button

    Introduction To program the AVR microcontroller you use “avrdude” to flash the hex files in the microcontroller. avrdude is a command line tool. Every time you have to flash the microcontroller with a new file you have to write the command. This AVRHexFlashGUI uses the avrdude software to flash the microcontroller but it provides a…

  • ATmega328PB 16-bit Timer TC3 – Fast PWM Mode

    I have used this FAST PWM mode to trigger two interrupt service routines. The timer compares register A sets the frequency. I have not enabled the output compare pins. since it was used by some other peripheral. So by doing this, I generate a PWM signal by issuing a command in the ISR.

  • ATmega328PB 16-bit Timer TC1 – CTC Mode

    Timers are essential components in microcontrollers that allow precise timing and synchronization for various applications. The ATmega328PB microcontroller offers several timer/counters, including Timer/Counter 1 (TC1), which is a 16-bit timer with advanced features. In this blog post, I will explore how to utilize Timer 1 in CTC (Clear Timer on Compare Match) mode on the…

  • ATmega328PB 8-Bit Timer TC0 – Normal Mode

    The simplest mode of operation is the Normal mode (WGM0[2:0] = 0x0). In this mode, the counting direction is always up (incrementing), and no counter clear is performed. The counter simply overruns when it passes its maximum 8-bit value (TOP=0xFF) and then restarts from the bottom (0x00). In Normal mode operation, the Timer/Counter Overflow flag…

  • How to use S109AFTG Microstep Driver with ATmega328PB Programmed using Microchip Studio

    When I opened the case. I found a PCB which is screwed to a big heatsink. I unscrewed the bolts and saw that there is S109AFTG. The IC is sandwiched between the PCB and the heatsink. A small aluminum block is also used for heat transfer between the IC and the heatsink. It has a…

  • What are AVR microcontrollers?

    AVR microcontrollers, developed by Atmel Corporation (now Microchip Technology), are designed for embedded applications that require low power consumption, high performance, and a small footprint. The AVR family includes a range of microcontrollers, each with varying processing power, memory capacity, and peripheral features. Overall, AVR microcontrollers are versatile and widely used in a variety of…

  • AVR Input Output Port Programming

    In AVR microcontroller programming, input/output ports are used to interface with external devices such as sensors, switches, LEDs, motors, and other peripherals. Here’s an example of how to program AVR input/output ports using C language: In this example, we set PORTB as an output port by setting all of its pins to output mode. We…

  • How to use AT24C32 EEPROM with ATmega328PB in Microchip Studio

    AT24C32 is an i2c compatible serial EEPROM which can be programmed using a microcontroller. The AT24C32 provides 32,768 bits of serial electrically erasable and programmableread-only memory (EEPROM). The device’s cascadable feature allows up to 8 devices to share a common 2-wire bus. The device is optimized for use in many industrial and commercial applicationswhere low…

  • How to use DS1307 RTC with ATmega328PB via I2C in Microchip Studio

    The DS1307 Real Time Clock uses I2c communication lines to connect with the microcontroller. I2C uses two lines commonly known as Serial Data/Address or SDA and Serial Clock Line or SCL. The two lines SDA and SCL are standardised and they are implemented using either an open collector or open drain configuration. What this means…

  • How to use UART Receive complete ISR of ATmega328PB using microchip studio

    When you enable the communication using the UART. You have the flexibility to either use the Polling or Interrupt method to continue with your programming. Polling halts the execution of the program and waits for the UART peripheral to receive something so that program execution must continue. But it eats a lot of the computing…