CompSystems 245 - Week 5 - Lecture 13 - Timers and Counters pt 2

Describe PWM:

• What it is

• 
  

Describe PWM on STM32F4:

• how to generate them

• how to affect frequency

• how to affect duty cycle

• what the CNT and CCRx registers are doing

• the modes that can be generated

Draw a timing graph in PWM Mode 1 (Low-True):

• Upcounting mode

• ARR = 6

• CCR = 3

• RCR = 0

Draw a timing graph in PWM Mode 1 (High-True):

• Upcounting mode

• ARR = 6

• CCR = 3

• RCR = 0

Describe the PWM in edge-aligned mode:

• what it means

• counter diagram

Describe the PWM in center aligned mode:

• What that means

• 
  

Describe how to use PWM mode in STMCube32IDE:

• its function

• how to change duty cycle programmatically

Describe one pulse mode:

• what it is

• 
  

Describe the SysTick Timer:

• what it is

• its features

• what its used fore

Describe the Watchdog timer:

• what it is

• what it does

• its uses

Describe the watchdog timer:

• the types

  • what they do

Describe the independent watchdog:

• when it reaches end of count value

• when a key value is written to the IWDG_KR register

Describe the real time clock:

• what it is

• what it does

• its uses

• 
  

Describe how to use the real time clock in STM32CubeIDE:

• functions

• use

• storage

• reading

•