5.1 Source Code Overview

Source code overview using ATmega4809 Xplained Pro:

• CPU clock: (default) 3.33 MHz.
• Peripherals used:
  • ADC, TCA, USART, V_REF.
  • ADC input channel is AIN 5: Pin PD5, 10-bit ADC resolution.
  • TCA: PWM signal is generated on pin PA0: 62 kHz, 50% duty cycle.
  • USART: TXD PC0, Baud rate: 19200, ADC result is sent to serial terminal.
  • V_REF selects the ADC reference voltage to 2.5V.

The project configured in Atmel START generates peripheral driver functions and files, as well as a ‘main()’ function that initializes all drivers.

• Driver header and source files are in the src and include folder.
• In atmel_start.c file, the function ‘atmel_start_init()’ initializes MCU, drivers, and middleware in the project.

Source code overview using ATtiny817 Xplained Pro:

• CPU clock: (default) 3.33 MHz.
• Peripherals used:
  • ADC, TCA, USART, V_REF.
  • ADC input channel is AIN 5: Pin PA5, 10-bit ADC resolution.
  • TCA: PWM signal is generated on pin PB0: 62 kHz, 50% duty cycle.
  • USART: TXD PB2, Baud rate: 19200, ADC result is sent to the serial terminal.
  • V_REF selects the ADC reference voltage to 2.5V.

The project configured in Atmel START generates peripheral driver functions and files, as well as a ‘main()’ function that initializes all drivers.

• Driver header and source files are in the src and include folder.
• In atmel_start.c file, the function ‘atmel_start_init()’ initializes MCU, drivers, and middleware in the project.