Arduino Serial problem

[Tomas Urbanek]

Pokud se jedna o vlastni port, zkontroloval bych nastaveni hw registru pro dany mcu dle datasheetu. To je prvni vec kterou je treba udelat. 

T

23. 3. 2017 v 17:48, Jaroslav Buchta <jaroslav.buchta na hascomp.cz>:

> Delay je OK.
> Koukal jsem i do knihovny HardwareSerial.cpp a nenapada me, v cem by mohl byt problem, pokud teda neni nejaky rozdil v HW nezi atmega328 a 32...
> 
> Dne 23.03.2017 v 17:26 Pavel Kutina napsal(a):
>> A jen pro poradek - delay vychazi dlouhy spravne?
>> 
>> Pavel Kutina
>> 
>> 
>> ----- Original Message ----- From: "Jaroslav Buchta" <jaroslav.buchta na hascomp.cz>
>> To: "HW-news" <hw-list na list.hw.cz>
>> Sent: Thursday, March 23, 2017 5:04 PM
>> Subject: Arduino Serial problem
>> 
>> 
>> Nez to zacnu nejak zkoumat - mam svuj HW s ATMEGA32, do nej jsem upravil
>> bootloader, ten funguje, vsechno zatim funguje krome UARTu.
>> 
>> // the setup function runs once when you press reset or power the board
>> // the loop function runs over and over again forever
>> void loop() {
>>  digitalWrite(4, HIGH);   // turn the LED on (HIGH is the voltage level)
>>  delay(500);                       // wait for a second
>>  digitalWrite(4, LOW);    // turn the LED off by making the voltage LOW
>>  delay(500);
>>  Serial.begin(9600);
>>  Serial.write(0x31);// wait for a second
>>  Serial.end();
>> }
>> 
>> To je posledni verze, chova se to tak, ze to evidentne nahodi TxD jako
>> out, vysle znak a zase spravne deinicializuje, problem je v tom, ze
>> parametr baudrate zda se nema vliv a ruchlost je konstantni cca 2.2ms/bit...
>> 
>> AVR radu moc neznam, nema nekdo napad, v cem by mohl byt zakopany pes?
>> 
>> Puvodni verze Serial.begin v setup a write kdekoli se chovala stejne.
>> 
>> Definice boardu vypada takto, F_CPU pri prekladu je OK 6MHz
>> 
>> atmega32-16.name=ATMega32 @ 6 MHz  (external oscillator; BOD disabled)
>> 
>> atmega32-16.upload.tool=avrdude
>> atmega32-16.upload.protocol=arduino
>> atmega32-16.upload.using=arduino
>> atmega32-16.upload.maximum_size=32000
>> atmega32-16.upload.maximum_data_size=1024
>> atmega32-16.upload.speed=57600
>> 
>> atmega32-16.bootloader.tool=avrdude
>> atmega32-16.bootloader.low_fuses=0xFF
>> atmega32-16.bootloader.high_fuses=0xFF
>> atmega32-16.bootloader.unlock_bits=0x3F
>> atmega32-16.bootloader.lock_bits=0x2F
>> 
>> atmega32-16.build.mcu=atmega32
>> atmega32-16.build.f_cpu=6000000L
>> atmega32-16.build.board=ATMega32-16e
>> atmega32-16.build.core=arduino
>> atmega32-16.build.variant=mega32
>> 
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> 
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