TMS570LS1224: Console Out/Input on J6 - UART

Collin Sale

Part Number: TMS570LS1224
Other Parts Discussed in Thread: CODECOMPOSER, HALCOGEN

Hello,

I'm using the LauchPad to communicate to several devices and would like to access the 2nd UART located on "J6".
The Pins are Labeled "LIN1RX and LIN1TX" but I just want to use the underlying UART to communicate.

I found the "hercules_examples" on "git.ti.com" and spent some time looking for a way to read and write bytes on these pins:

enum linPinSelect
{
PIN_LIN_TX = 4U,
PIN_LIN_RX = 2U
};

but either it's LIN-Specific or the code points to SCI (like the "uartstdio.h")
which then is using the Pins on "J2" of the Launchpad.

Would be great if someone could point me to a solution to use this additional UART-Line.
Thanks a lot

over 4 years ago

0 Collin Sale over 4 years ago

Prodigy 215 points

Update:

this document is basically saying exactly what I want to achieve:

https://www.ti.com/lit/ds/symlink/tms570ls1224.pdf?ts=1611578937426&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTMS570LS1224

7.8 Local Interconnect Network Interface (LIN)

The SCI/LIN module can be programmed to work either as an SCI or as a LIN. The core of the module is an SCI.
The SCI’s hardware features are augmented to achieve LIN compatibility. The SCI module is a universal asynchronous receiver-transmitter that implements the standard nonreturn to zero format. The SCI can be used to communicate, for example, through an RS-232 port or over a Kline.

---

I want to connect a https://www.ti.com/product/MAX3237E or https://www.ti.com/product/MAX3232

to the RX-TX pins on J6.

But how do I Read and Write bytes on these pins using CodeComposer.
I was still not able to find a solution inside the hercules examples.

https://git.ti.com/cgit/hercules_examples/hercules_examples/

Best Regards
Collin