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Hi experts,
Can the AM243x use UART(and MCU_UART) in 9-bit data format? There are the following differences in the documentation, which information is correct?
If it is possible to send 9-bit data, we would appreciate it if you could share any sample code or other referenceable information.
Best regards,
O.H
Hello O.H,
The Technical Reference Manual is correct, the AM243x is capable of using UART in 9-bit data format.
Note that data in 9-bit mode can only be written and read through the UART_ETHR / UART_ERHR registers.
12.1.5.2.1.4 UART 9-bit Mode Data Format of the AM243x TRM details how to configure 9 bit mode format by writing "1" to bit 6 of the UART_MDR4 register.
For more detail on 9-bit UART mode refer to Using a 9-bit Software UART with Stellaris® Microcontrollers. The AM243x is not a Stellaris® Microcontroller and so the code will not work but the document discusses 9-bit UART function and limitations.
Regards,
Erik
Hello Erik,
Thank you for your reply and information. I understood.
Best regards,
O.H