LAUNCHXL-CC2650: UART pin configuration

mayer tamas

Part Number: LAUNCHXL-CC2650
Other Parts Discussed in Thread: CC2650

Hi!

I've started with project zero , I'm using UART with interrupt, it works fine.I want to send information from an msp340 to cc2650 ,but It's not working yet.

Here is my pin config:

const PIN_Config BoardGpioInitTable[] = {

    Board_RLED   | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,         /* LED initially off             */
    Board_GLED   | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,         /* LED initially off             */
    Board_BTN1   | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_BOTHEDGES | PIN_HYSTERESIS,            /* Button is active low          */
    Board_BTN2   | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_BOTHEDGES | PIN_HYSTERESIS,            /* Button is active low          */
    Board_SPI_FLASH_CS | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MIN,  /* External flash chip select    */
    Board_UART_RX | PIN_INPUT_EN | PIN_PULLDOWN,                                              /* UART RX via debugger back channel */
    Board_UART_TX | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL,                        /* UART TX via debugger back channel */
    Board_SPI0_MOSI | PIN_INPUT_EN | PIN_PULLDOWN,                                            /* SPI master out - slave in */
    Board_SPI0_MISO | PIN_INPUT_EN | PIN_PULLDOWN,                                            /* SPI master in - slave out */
    Board_SPI0_CLK | PIN_INPUT_EN | PIN_PULLDOWN,                                             /* SPI clock */

    PIN_TERMINATE
};

How should I initialize the UART RX pin to get information on "DIO3".

Best Regards

Mayer Tamás

over 8 years ago

0 RachelP over 8 years ago

TI__Genius 12815 points

Hi Mayer,

Here is the link to the TI-RTOS Driver APIs for TI-RTOS v2.20.01.08: software-dl.ti.com/.../_u_a_r_t_8h.html

That should help you get started with the UART driver.

0 mayer tamas over 8 years ago in reply to RachelP

Intellectual 430 points

Hi Rachel!

I've already read this , but my problem is rather gpio config than UART config.

I think i'ts a basic thing but I don't know what is the problem. I figured that the msp430 can't pull down the cc2650's rx pin,only to 2.7 V. The level of logic one is ok,3.3.

On scope I've got this:

I've already read the MSP430's and the CC2650's manual and I set PULLUP, PULLDOWN, etc. on both sides but still nothing. If I put the cc2650's rx directly to the ground ,the interrupt works and with PUTTY it is also working ,so I'think it is a PIN problem as I mentioned before.

Best regards

Mayer Tamás

0 Luu Vy over 8 years ago

Expert 2225 points

Hi Mayer Tamas,

Do you connect to DIO2 and DIO3 directly? If you connect to DIO2 and DIO3 directly, you should remove the jumper on TX and RX on LAUNCH Board.

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LAUNCHXL-CC2650: UART pin configuration