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AM1808 PRU configure as Uart

elan peng
Prodigy 100 points
Other Parts Discussed in Thread: AM1808

Dear,

 I have a new customer, they want to use AM1808 PRU configure as 8 channel Uart, the want to know the following issues:

1. Doese the 8 channel Uart can work independent?

2. Does each channel Uart can support  9bit data length including parity check bit?

3. Does each channel uart can run  support baud rates 115200 even each channel works?

Best regards,

 Elan

  • 0
    TI__Genius 15920 points

    Hi Elan,

    1.  Yes, the 8 channels work independently.  Note that the baud rate for each Soft-UART is based upon the software-configurable maximum baud rate (i.e. 115200, 57600, 38400, etc.) divided by 1, 2, 4, 6, 12, 16, 24, 48, 64, 96 & 192.

    2.  Parity is a planned addition for 4Q.

    3.  The number of UARTs supported depends on several software configuration options and the baud rate of each UART.  Please refer to the limitations of the UART Quick Start Guide for additional details: http://www.mistralsolutions.com/pes-support/support-downloads/l13x-daughter-card-documentation-software.html.  As you will see, if 8 UART ports are required, the maximum baud rate supported is 57600.  The Quick Start Guide describes how to estimate the number of UART ports supported and required configuration for 115200 baud.

    Regards,

    Melissa

  • 0 in reply to melissaw
    Intellectual 855 points

    Melissa,

      my customer have the requirement too. the TI give some pru examples,but they base on dsp or linux entironment.  now, the customer point the AM1808 and doesn't use linux system. for AM1808 hasn't dsp, how to configure my ccs5 to develop the pru on AM1808? 

       Thanks.

      Best regards

      Token

  • 0 in reply to melissaw
    Prodigy 20 points

    2.  Parity is a planned addition for 4Q

    Now is ok?

    Please give me a example or a example link.

    Thanks!!