uC32 UART2

[Saggitarius]

Hi there,

 

Can somebody tell me, how can I access the 2nd UART on uC32 board? (Rx pin39 & Tx pin40) 

I tried with Serial2.begin(38400); and receiving " error: 'Serial2' was not declared in this scope" message.

[jpeyron]

Hi Saggitarious,

Could you post your code to help with troubleshooting this error. Without the code i would first make sure that  the Serial2.begin(38400);  is used above the main funtion.

thank you,

Jon

[JColvin]

Hello,

You'll actually want to use Serial1.begin(38400); since the Serial names for the UART hardware start their numbering at 0. So the first UART just uses Serial, and the second UART uses Serial1. The uC32 does not have a third UART available for Serial2 which is why you are receiving this error.

Thanks,
JColvin

[Saggitarius]

On 8/11/2016 at 6:48 PM, JColvin said:

Hello,

You'll actually want to use Serial1.begin(38400); since the Serial names for the UART hardware start their numbering at 0. So the first UART just uses Serial, and the second UART uses Serial1. The uC32 does not have a third UART available for Serial2 which is why you are receiving this error.

Thanks,
JColvin

Hi,

 

Thanks for reply. Is it written this definition somewhere on a reference sheet?

 

Thanks,

Bela

[jpeyron]

Bela,

Serial.begin is described here. Using multiple serial ports is described here as well. At the bottom of the web page there is an example that uses 4 serial ports that are available with the Arduino Mega with different baud rates.

thank you,

Jon