SimonTHK
Member
Hello electro tech online
First of, I am using a Uc from cyrpess. I have been using the UART that I can pick in the designer program for the Uc. Then I have placed a MAX232 outside the Uc and then perfectly able to send info to the hyperteminal through my serial cable.
My project is, that I want to send info to an MP3 player I bought, that should be running RS232.
I am using this MP3 player https://www.electro-tech-online.com/custompdfs/2013/03/AU5121Sspec.pdf
I can make the Uc send info to my hyperterminal, but I cant make it work to the MP3 player. I do use the correct baudrate etc.
Quistion 1: Why does it say that my MP3 player use RS232 but also write RX (TTL), the TTL? In my understanding, it isnt the same. What should I be sending to the MP3 player?
Quistion 2: Do I need to have 2 UART's? I am not perfectly understanding the UART, RS232 and TTL stuff, even though I tried reading up on it.
In my Uc I choose the UART, program it etc. But also have to use the MAX232 UART outside the Uc. Do I need another UART again before the MP3 player?
Quistion 3: Do I even need a UART if my Uc send out as RS232 and the MP3 player receive RS232?
Im so confussdled!
First of, I am using a Uc from cyrpess. I have been using the UART that I can pick in the designer program for the Uc. Then I have placed a MAX232 outside the Uc and then perfectly able to send info to the hyperteminal through my serial cable.
My project is, that I want to send info to an MP3 player I bought, that should be running RS232.
I am using this MP3 player https://www.electro-tech-online.com/custompdfs/2013/03/AU5121Sspec.pdf
I can make the Uc send info to my hyperterminal, but I cant make it work to the MP3 player. I do use the correct baudrate etc.
Quistion 1: Why does it say that my MP3 player use RS232 but also write RX (TTL), the TTL? In my understanding, it isnt the same. What should I be sending to the MP3 player?
Quistion 2: Do I need to have 2 UART's? I am not perfectly understanding the UART, RS232 and TTL stuff, even though I tried reading up on it.
In my Uc I choose the UART, program it etc. But also have to use the MAX232 UART outside the Uc. Do I need another UART again before the MP3 player?
Quistion 3: Do I even need a UART if my Uc send out as RS232 and the MP3 player receive RS232?
Im so confussdled!