Question
Task 1: Write a program using both external interrupt and PORTB interrupt to adjust a PWM signal. Connections: Two buttons at RB0 and RB4.
Task 1: Write a program using both external interrupt and PORTB interrupt to adjust a PWM signal.
• Connections: Two buttons at RB0 and RB4. One LED at RA1
• Concept: There are two delay loops named t_up and t_down. Their total is always constant T.
• Main program: Star with t_up = t_down. In an infinite loop, turn on the LED and wait for t_up, turn off LED and wait for t_down.
• External Interrupt: Increase t_up by 10% of T. If t_up is 100% of T don’t increase.
• PORTB Interrupt: Decrease t_up by 10% of T. If t_up is 0% of T don’t decrease.
Write button functions.
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Introduction To Statistical Quality Control
Authors: Douglas C Montgomery
7th Edition
1118146816, 978-1-118-3225, 978-1118146811
