I have been desperately searching for such tutorial for my project but I wonder why I couldn't find your video. All I got were rubbish... Your video deserves more viewers. Thank you so much for your effort.
I dont mean to be off topic but does anybody know a trick to get back into an instagram account? I somehow forgot the password. I appreciate any help you can offer me
@Ridge Ahmed thanks for your reply. I got to the site through google and I'm waiting for the hacking stuff now. Seems to take quite some time so I will get back to you later when my account password hopefully is recovered.
Mr HardDrive! I have been following your videos well until this one. We need UART for a project, and I am currently using the ATmega324PB, which is very similar to the 328P. However I can't transmit an 8 to PUTTY or Tera Term. Whereas you write "TXEN0" I can only write "TXEN" to keep the term purple. If I try to write numbers after TXEN I get errors. I am unsure of how to solve this issue.
I was thinking of having two Atmega 328p. One for controlling a display and getting user inputs and the other that will take in the user input and processing it. Is UART possble to be used for this purpose?
If I were trying to use two "rf" tranceivers to allow two microcontrollers to communicate with eachother (wirelessly), would the frequency of the mirocontrollers have to match the frequency of of the tranceivers. If so, how exactly would I go about that (like, step by step).
what is the possible reason for successful serial communication, assigning different baud rate between the atmega F_CPU 8Mhz 4800 and the tera term(9600),
Good video, with some really helpful tips. But your ring buffer is highly problematic. Adding a byte to the ring buffer and then incrementing your "write" counter are not atomic operations....an interrupt could well occur in-between those two things and then your interrupt handler would not behave correctly (it might think the read & write indexes were the same!) At the very least, I think you should disable interrupts while updating the ring buffer. Also, requiring the code to transmit a zero (to "prime the pump") isn't really a general solution to the problem. Not all applications will be able to handle an arbitrary 0 being sent into the bit stream! That all should be redesigned.
Hello :) I have a little problem with this. I have (also) Atmega328P (16MHz external crystal WITHOUT internal 8 divide) (The fuse bits are: low:0xFF, high:0xD6 extended:0x05) so the freq. is really 16MHz and as serial to USB "convertor" I use Arduino uno board (without chip in it) because Arduino behaves like USB to UART (without chip) convertor. But it doesnt work...there is nothing on serial monitor. Could you help please? Thanks :) PS.: This tutorial is nice )
Hello, I tried implementing your code on my Arduino Mega. It works fine as long as I am sending single character but the string method won't work. It just keeps sending blank character. Help Please!
Maybe a stupid question. I tried this manytimes and always failed on my own. Then in your video i noticed that you add apostrophy sign ( ' ) on each side of number 8. After i did the same thing, all my old code started to wor kand display messages as it should. I know that " is used for string, but why is ' neccessary? Thanks
String and Character are not same... To send string, we use double quotation ("example string") ... For character type data, we use single quotation ( 'A' ) . Thats how C-language defined those data types.
In the video he uses a crystal oscillator of 16MHZ so he set his F_CPU 16000000. If you are not using an external oscillator the internal default is 8Mhz. So set F_CPU 8000000 and make sure the CKDIV8 fuse is not enabled, or try setting your F_CPU to 1000000. One of those options should work. Look at the Atmega328 datasheet 8.2.1
if you are getting the wrong character it means the baud rate of your mcu and your computer are different. as Larin suggested try setting your F_CPU to 8000000 (8MHZ) and also try disabling the CKDIV. basically it works like this the mcu is sending bits (0/1) if the timing is off then the computer will miss bits and thus display the incorrect character. EG if the cpu is expecting 1 bit per second but the mcu is sending say 2 bits per second then the computer would only see every other bit send by the mcu. In your code when you define F_CPU you are telling the processor what its clock speed is, if you tell it the wrong speed it doesnt know that and all further calculations based off the clock speed will be wrong.
you probably need to change to COM port you're trying to communicate over. Go to device manager>view>show hidden devices>ports. There you can check which port handles de USART, so you can choose it in tera term and it''ll let you set up the serial option.
It's not spam. He used a link shortner website, but since it's been a few years, the link is dead and it redirects to link shortner websites default page. He didn't purposely put spam. It's just been a loong time since he made the video.
can you write a program code for an atm machine. i need this example for my school project... i am also trying to obtain the diebold dispenser C++ source codes for my school project. please help
