Техника микропроцессорных систем в коммутации. Проектирование микропроцессорных систем на базе микроконтроллеров AVR фирмы Atmel. Горохин В.Н. - 24 стр.

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Ɍɚɛɥɢɰɚ 27. Ɋɟɝɢɫɬɪ ɮɥɚɝɨɜ ɩɪɟɪɵɜɚɧɢɣ ɬɚɣɦɟɪɨɜ-ɫɱɟɬɱɢɤɨɜ – TIFR
Ɋɚɡɪɹɞ 7 6 5 4 3 2 1 0
OCF2 TOV2 ICF1 OCF1A OCF1B TOV1 OCF0 TOF0 TIFR
ɑɬ./ɡɚɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ.
ɂɫɯ. ɡɧ. 0 0 0 0 0 0 0 0
ɉɪɢɦ.: Ȼɢɬɵ ɞɚɧɧɨɝɨ ɪɟɝɢɫɬɪɚ ɨɬɧɨɫɹɬɫɹ ɤ ɧɟɫɤɨɥɶɤɢɦ ɬɚɣɦɟɪɚɦ, ɧɨ ɜ
ɞɚɧɧɨɦ ɩɚɪɚɝɪɚɮɟ ɪɚɫɫɦɚɬɪɢɜɚɸɬɫɹ ɛɢɬɵ ɬɨɥɶɤɨ ɨɞɧɨɝɨ ɬɚɣɦɟɪɚ. Ɉɩɢɫɚɧɢɟ
ɨɫɬɚɥɶɧɵɯ ɛɢɬ ɧɟɨɛɯɨɞɢɦɨ ɫɦɨɬɪɟɬɶ ɜ ɫɨɨɬɜɟɬɫɬɜɭɸɳɢɯ ɪɚɡɞɟɥɚɯ.
Ɋɚɡɪɹɞ 5 – ICF1: Ɏɥɚɝ ɡɚɯɜɚɬɚ ɫɨɫɬɨɹɧɢɹ ɬɚɣɦɟɪɚ–ɫɱɟɬɱɢɤɚ 1
Ɏɥɚɝ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ, ɟɫɥɢ ɧɚ ɜɯɨɞɟ ICP1 ɨɩɪɟɞɟɥɹɟɬɫɹ ɭɫɥɨɜɢɟ ɡɚɯɜɚɬɚ.
ȿɫɥɢ ɪɟɝɢɫɬɪ ɡɚɯɜɚɬɚ ICR1 ɜɵɛɪɚɧ ɫ ɩɨɦɨɳɶɸ ɛɢɬ WGMn3:0 ɜ ɤɚɱɟɫɬɜɟ ɢɫɬɨɱ-
ɧɢɤɚ ɜɟɪɯɧɟɝɨ ɩɪɟɞɟɥɚ ɫɱɟɬɚ, ɮɥɚɝ ICF1 ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ ɩɨ ɞɨɫɬɢɠɟɧɢɢ ɜɟɪɯ-
ɧɟɝɨ ɩɪɟɞɟɥɚ ɫɱɟɬɚ.
ICF1 ɚɜɬɨɦɚɬɢɱɟɫɤɢ ɫɛɪɚɫɵɜɚɟɬɫɹ ɩɪɢ ɩɟɪɟɯɨɞɟ ɧɚ ɜɟɤɬɨɪ ɩɪɟɪɵɜɚɧɢɹ ɩɨ
ɡɚɯɜɚɬɭ ɫɨɫɬɨɹɧɢɹ ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ. Ⱥɥɶɬɟɪɧɚɬɢɜɧɨ ɮɥɚɝ ICF1 ɦɨɠɧɨ ɫɛɪɚɫɵ-
ɜɚɬɶ ɩɭɬɟɦ ɡɚɩɢɫɢ ɜ ɧɟɝɨ ɥɨɝ. 1.
Ɋɚɡɪɹɞ 4 – OCF1A: Ɏɥɚɝ ɪɟɡɭɥɶɬɚɬɚ ɫɪɚɜɧɟɧɢɹ ɤɚɧɚɥɚ Ⱥ ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ 1
Ⱦɚɧɧɵɣ ɮɥɚɝ ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ ɫɥɟɞɭɸɳɢɦ ɬɚɤɬɨɦ ɩɨɫɥɟ ɫɨɜɩɚɞɟɧɢɹ ɡɧɚ-
ɱɟɧɢɹ TCNT1 ɫ ɪɟɝɢɫɬɪɨɦ Ⱥ ɩɨɪɨɝɚ ɫɪɚɜɧɟɧɢɹ (OCR1A).
Ɉɛɪɚɬɢɬɟ ɜɧɢɦɚɧɢɟ, ɱɬɨ ɫɬɪɨɛ ɩɪɢɧɭɞɢɬɟɥɶɧɨɣ ɭɫɬɚɧɨɜɤɢ ɪɟɡɭɥɶɬɚɬɚ
ɫɪɚɜɧɟɧɢɹ (FOC1A) ɧɟ ɭɫɬɚɧɚɜɥɢɜɚɟɬ ɮɥɚɝ OCF1A. Ɏɥɚɝ OCF1A ɚɜɬɨɦɚɬɢɱɟɫɤɢ
ɫɛɪɚɫɵɜɚɟɬɫɹ ɩɪɢ ɩɟɪɟɯɨɞɟ ɧɚ ɫɨɨɬɜɟɬɫɬɜɭɸɳɢɣ ɜɟɤɬɨɪ ɩɪɟɪɵɜɚɧɢɹ.
Ⱥɥɶɬɟɪɧɚɬɢɜɧɨ, ɮɥɚɝ OCF1A ɫɛɪɚɫɵɜɚɟɬɫɹ ɩɭɬɟɦ ɡɚɩɢɫɢ ɜ ɧɟɝɨ ɥɨɝ. 1.
Ɋɚɡɪɹɞ 3 – OCF1B: Ɏɥɚɝ ɪɟɡɭɥɶɬɚɬɚ ɫɪɚɜɧɟɧɢɹ ɤɚɧɚɥɚ B ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ 1
Ⱦɚɧɧɵɣ ɮɥɚɝ ɞɟɣɫɬɜɭɟɬ ɚɧɚɥɨɝɢɱɧɨ ɩɪɟɞɵɞɭɳɟɦɭ, ɧɨ ɜ ɨɬɧɨɲɟɧɢɢ ɤɚɧɚɥɚ
ɫɪɚɜɧɟɧɢɹ ȼ.
Ɋɚɡɪɹɞ 2 – TOV1: Ɏɥɚɝ ɩɟɪɟɩɨɥɧɟɧɢɹ ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ 1
ɍɫɬɚɧɨɜɤɚ ɞɚɧɧɨɝɨ ɮɥɚɝɚ ɡɚɜɢɫɢɬ ɨɬ ɡɧɚɱɟɧɢɣ ɛɢɬ WGMn3:0. ȼ ɧɨɪɦɚɥɶ-
ɧɨɦ ɪɟɠɢɦɟ ɢ ɪɟɠɢɦɟ ɋɌɋ ɮɥɚɝ TOV1 ɭɫɬɚɧɚɜɥɢɜɚɟɬɫɹ ɩɪɢ ɩɟɪɟɩɨɥɧɟɧɢɢ ɬɚɣ-
ɦɟɪɚ-ɫɱɟɬɱɢɤɚ. ɋɦ. ɬɚɛɥ. 61 ɞɥɹ ɢɡɭɱɟɧɢɹ ɩɨɜɟɞɟɧɢɹ ɮɥɚɝɚ TOV1 ɩɪɢ ɡɚɞɚɧɢɢ
48
ɞɪɭɝɢɯ ɡɧɚɱɟɧɢɣ WGMn3:0. Ɏɥɚɝ TOV1 ɚɜɬɨɦɚɬɢɱɟɫɤɢ ɫɛɪɚɫɵɜɚɟɬɫɹ ɩɪɢ ɩɟɪɟ-
ɯɨɞɟ ɧɚ ɜɟɤɬɨɪ ɩɪɟɪɵɜɚɧɢɹ ɩɨ ɩɟɪɟɩɨɥɧɟɧɢɸ ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ 1. Ⱥɥɶɬɟɪɧɚ-
ɬɢɜɧɨ ɮɥɚɝ TOV1 ɫɛɪɚɫɵɜɚɟɬɫɹ ɩɭɬɟɦ ɡɚɩɢɫɢ ɜ ɧɟɝɨ ɥɨɝ. 1.
Ɂɚɞɚɧɢɟ ɤ ɥɚɛɨɪɚɬɨɪɧɨɣ ɪɚɛɨɬɟ
ɂɡɭɱɢɬɶ ɮɚɣɥ ɩɪɨɟɤɬɚ Lab_3.prj ɢ ɮɚɣɥ ɩɪɨɝɪɚɦɦɵ Lab3.asm ɧɚ ɹɡɵɤɟ
Ⱥɫɫɟɦɛɥɟɪ. Ɉɬɦɨɞɟɥɢɪɨɜɚɬɶ ɩɪɨɝɪɚɦɦɭ ɜ ɫɪɟɥɟ VMLab. Ɋɟɡɭɥɶɬɚɬɵ ɦɨɞɟɥɢɪɨ-
ɜɚɧɢɹ ɩɪɟɞɫɬɚɜɥɟɧɵ ɧɚ ɪɢɫ. 21.
Ɋɢɫ. 21. Ɋɟɡɭɥɶɬɚɬɵ ɦɨɞɟɥɢɪɨɜɚɧɢɹ ɩɪɨɝɪɚɦɦɵ LAB3.asm
Ɏɚɣɥ Lab_3.prj
; Sinewave generator example, using Timer 1 PWM
.MICRO "ATmega16" ; The micro being used
.PROGRAM "Lab3.asm" ; The .ASM program
.TRACE ; Set trace ON
.POWER VDD=5 VSS=0 ; Power nodes
.CLOCK 1.8432meg ; Micro clock
R2 PD5 fil_out1 100K ; PB3 port = OC1 (output compare)

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