UART2 interface on OMAP3 EVM

Can you elaborate on what you mean by you can not access these?

The pad_config for uart2_rts & uart2_cts share the same register address, uart2_rts uses bits [31:16] and uart2_cts uses bits [15:0]

The same is true for uart2_rx and uart2_tx, uart2_rx uses bits [31:16] and uart_tx uses bits [15:0].

Full details of the register bits can be found in section 7.6.3.2 of theTRM (Rev M.)

  Paul

Hi Paul,

      Thank you for showing interest in my post. I am trying to write an application at the uboot level which will indeed test UART2 interface. For this i need to configure UART2_CTS, UART2_RTS, UART2_TX and UART2_RX, while i'm able to modify the data available in the UART2_CTS bits [15:0] and UART_TX bits [15:0], I'm unable to modify data in UART2_RTS bits [31:16] and UART_RX bits [31:16].

You can also try displaying the register contents at the bootloader(u-boot) prompt:

md 0x48002176 1 (Board hung)

md 0x4800217a 1 (Board hung)

Hope i conveyed the problem.

Regards,

N.S.SriHarsha

I think I see your problem.

You are using 32 bit read/write on a non aligned address.  You need to write both UART2_RTS and UART2_CTS at address 0x4800 2174. The same goes for UART2_RX and UART2_TX at address 0x4800 2178.

  Paul

Hi Paul,

        That is what i am trying to achieve. Kindly help me through.

Regards,

N.S.SriHarsha

Hi Paul,

         Thank you for your time and valuable input. My application now works absolutely fine with no issues. Thank you once again.

Regards,

N.S.SriHarsha