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RTOS/AMIC110: UART1 fails when ICSS pinmux is enabled

Expert 3290 points

Replies: 2

Views: 305

Part Number: AMIC110

Tool/software: TI-RTOS

Hi Team, 

My customer is using the PDK RTOS 1.0.8 with AMIC110 device. 

In the application, we follow the design document of  to change the UART0 console to the UART1 with below example application:

C:\ti\pdk_am335x_1_0_8\packages\MyExampleProjects\UART_BasicExample_iceAMIC110_armExampleProject

It worked well, however, when we tried to enable the BOARD_INIT_ICSS_PINMUX configuration, it would fail working. 

The main change is as below, in the file

C:\ti\pdk_am335x_1_0_8\packages\ti\drv\uart\example\sample\src\main_uart_example.c

In line 95~97, Board_initUART function

boardCfg = BOARD_INIT_PINMUX_CONFIG |
BOARD_INIT_MODULE_CLOCK |
BOARD_INIT_UART_STDIO;

if we add the BOARD_INIT_ICSS_PINMUX, it failed with UART console output. 

boardCfg = BOARD_INIT_PINMUX_CONFIG |
BOARD_INIT_MODULE_CLOCK |
BOARD_INIT_UART_STDIO | BOARD_INIT_ICSS_PINMUX;

But I checked the PINMUX carefully, adding the BOARD_INIT_ICSS_PINMUX doesn't affect the UART1's pinmux on UART1_RX & UART1_TX. 

So i'm wondering why the BOARD_INIT_ICSS_PINMUX configuration would affect the UART1's console output. 

  • The RTOS team have been notified. They will respond here.

     

    Best Regards
    Biser
  • In reply to Biser Gatchev-XID:

    Steven,

    Have you tried

    boardCfg = BOARD_INIT_ICSS_PINMUX | BOARD_INIT_MODULE_CLOCK | BOARD_INIT_UART_STDIO;

    The two options (BOARD_INIT_PINMUX_CONFIG and BOARD_INIT_ICSS_PINMUX) to select CPSW or ICSS are not expected to run in parallel.

    Regards, Garrett

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