Cov txheej txheem:

Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj: 4 Cov Kauj Ruam
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj: 4 Cov Kauj Ruam

Video: Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj: 4 Cov Kauj Ruam

Video: Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj: 4 Cov Kauj Ruam
Video: Npau Suav Pom Tsheb loj Txhais Tau Li Cas 2024, Kaum ib hlis
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Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj
Atmega128A Kev Tsav Tsheb Loj - ATMEL ICE AVR Timer UART PWM Tswj

Hauv cov lus qhia no, kuv yuav piav qhia koj yuav ua li cas

  • tswj DC lub cev muaj zog nrog PWM
  • sib txuas lus ntawm UART
  • tuav timer cuam tshuam

Ua ntej tshaj plaws, peb yuav siv AVR Core system Development board uas koj tuaj yeem pom ntawm Aliexpress ib ncig 4 USD. Qhov kev txhim kho pawg thawj coj txuas ntawm no. Peb tseem yuav siv Atmel ICE Debugger thiab Atmel Studio rau program & debug peb cov software.

Kauj Ruam 1: Dhau Dhau Mus Rau Hauv Cov Ntaub Ntawv & Cov Cai Tau Txais - Clock Speed

Deep Diving Into Datasheet & Source Code - Clock Speed
Deep Diving Into Datasheet & Source Code - Clock Speed
Deep Diving Into Datasheet & Source Code - Clock Speed
Deep Diving Into Datasheet & Source Code - Clock Speed
Deep Diving Into Datasheet & Source Code - Clock Speed
Deep Diving Into Datasheet & Source Code - Clock Speed

Hauv 1. lub mos txwv peb txiav txim siab peb cov zaus siv lead ua qhov twg peb tuaj yeem pom ntawm pawg thawj coj loj

Kauj Ruam 2: Teeb UART Cov Ntawv Sau Npe

Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe
Teeb UART Cov Ntawv Sau Npe

Txhawm rau sib txuas lus nrog UART koj yuav tsum teeb tsa USART Baud Rate Registers - UBRRnL thiab UBRRnH kom raug koj tuaj yeem suav nws tus kheej lossis koj tuaj yeem siv lub laij lej online kom tau txais qhov txiaj ntsig raug.

Online laij lej

ruemohr.org/~ircjunk/avr/baudcalc/avrbaudca…

Yog li MYUBBR tus nqi tau suav tom qab ntawd, Hauv kev sau npe UCSR0B peb pab kom RXEN0 (rov ua haujlwm tau txais) TXEN0 (xa mus pab tau) thiab RXCIE0 (RX rau cuam tshuam). Hauv npe UCSR0C peb xaiv 8 me ntsis char loj.

Tom qab peb teeb tsa RX cuam tshuam me ntsis, peb yuav tsum ntxiv ISR ua haujlwm rau USART0_RX_vect

ISR (USART0_RX_vect) {char rcvChar = UDR0; if (rcvChar! = '\ n') {tsis [bufferIndex] = rcvChar; bufferIndex ++; }}

Koj yuav tsum tsis txhob ua ib qho laj thawj lag luam hauv koj qhov kev pabcuam cuam tshuam. Koj yuav tsum ua kom muaj nuj nqi rov los asap.

Kauj Ruam 3: PWM Chaw

PWM Settings
PWM Settings

Hauv kev ua haujlwm pibPWM peb teeb tsa peb lub moos CPU scaler, Timer/Counter mode as Fast PWM thiab teeb tsa nws tus cwj pwm nrog COM khoom

Peb kuj yuav tsum txuas DC lub cav rau OC2 tus pin uas tau teev tseg hauv Table 66. Sib Piv Cov Qauv Tawm, PWM Hom Ceev hauv peb cov ntawv, koj tseem yuav pom tias OC2 tus pin yog (OC2/OC1C) PB7

Kauj Ruam 4: Qhov tshwm sim

Qhov tshwm sim
Qhov tshwm sim
Qhov tshwm sim
Qhov tshwm sim

Thaum koj upload cov cai hauv qhov txuas.

Koj tuaj yeem nkag mus rau tus nqi PWM tshiab (0-255) los ntawm UART (koj tuaj yeem siv arduino serial chaw nres nkoj davhlau ya nyob twg) los teeb tsa DC Tsav nrawm.

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