Non polling UART functions in PDK for 437x

Jim Elder

Other Parts Discussed in Thread: AM4377

Hi,

I'm not sure if this is the correct forum, but would be grateful if you could direct me.

I am cutting code for the AM4377, and I need to interface to the UARTs. I have a version of code using the UART_gets, _puts and -getc function in the UART_stdio package. I am also using SYS/BIOS.

My problem is that I need a non-polling UART driver, I notice that there is a DMA with callback version in file:C:\ti\pdk_am437x_1_0_0\packages\ti\drv\uart\soc which I think would solve my problem. However when I look at the header description it suggests this is for the AM57x. As it is included in the 437x PDK will it work with that processor?? If not is there an alternative non-polling driver I can use?. Also are there any examples of using a non polling UART driver for this processor in the TI-RTOS environment please?

Many Thanks,

Jim Elder (Senior Software Engineer - Raytheon Systems Ltd.)

over 10 years ago

0 Moses Isang over 10 years ago

TI__Expert 8175 points

Hi Jim,

Your question is more specific to PDK than SYS/BIOS. I'll have your post moved to a forum where it can get answered.

Thanks,

Moses

0 Sasha Slijepcevic over 10 years ago

TI__Mastermind 37985 points

Jim,
from the C source file in C:\ti\pdk_am437x_1_0_0\packages\ti\drv\uart\soc\am437x, it seems that the only header file used for AM437x is UART_v1.h, not UART_dma_v1.h. I am just guessing here, but I'll try to get someone else more familiar with that product to confirm.
Have you looked into examples that can be built by using the script pdkProjectCreate.bat? That script will create two examples, and then you can import these examples to CCS. They are very basic, one uses UART_read/UART_write API and another uses UART_stdio calls. They don't show how to use different UART modes, but UART.h defines UART_Mode enumeration for specifying UART_MODE_BLOCKING or UART_MODE_CALLBACK mode, which are both non-polling.

0 David Friedland over 10 years ago in reply to Sasha Slijepcevic

TI__Mastermind 18320 points

Jim,

I moved this thread over to the device forum in hopes that someone there can answer further.

0 Jim Elder over 10 years ago in reply to Sasha Slijepcevic

Prodigy 60 points

Thankyou very much Sasha

- I will investigate the BLOCKING and CALLBACK modes further.

Happy New Year to you,

Jim

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Non polling UART functions in PDK for 437x