Infineon GPT12 PWM Capture 1 Manual page 10

Capture of pwm signal via gpt12, aurix tc2xx microcontroller training

Implementation

Calculation example

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Part 1: 64535 increments before first overflow: 65535 -1000 = 64535

(Max value of T3 – counter value at rising edge = total increments)

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Part 2: 393210 increments between the second and last overflow:

6 * 65535 = 393210 (6 overflows * max value of T3 = total increments)

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Part 3: 42255 increments after last overflow: 42255 (counter value at rising edge)

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Total increments between two rising edges: 64535 + 393210 + 42255 = 500000

T3 counter value: 1000

T3 Count

(between 0 and 65535)

PWM Signal (50 Hz)

Period of PWM signal 0.02 s

Interrupt on previous rising edge

2019-10-17

Part 1

7 overflows of timer T3 during one PWM period

T3 counter value: 42255

Part 2

Interrupt on actual rising edge

Part 3

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