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CCS/LAUNCHXL-CC2640R2: UART write raw bytes using Display driver?

Matt Gaidica1
Expert 1540 points

Part Number: LAUNCHXL-CC2640R2

Tool/software: Code Composer Studio

I would like to keep the menu capability of simple_central, but upon entering discovery mode, I would like to access to something like UART_write() so I can stream advertising data to the serial port. What is the best way to accomplish this without disabling the Display driver?

  • 0
    Expert 1540 points

    I guess the best of both worlds is having access to both UART and Display. For anyone else, here's how I'm juggling them. In SimpleCentral_init()

    dispHandle = Display_open(Display_Type_ANY, NULL);
UART_init();
UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.baudRate = 115200;

    In SimpleCentral_processAppMsg()

    case SC_EVT_SCAN_ENABLED:
...
Display_printf(dispHandle, SC_ROW_NON_CONN, 0, "Discovering...");
Display_close(dispHandle);
uart = UART_open(Board_UART0, &uartParams);

case SC_EVT_ADV_REPORT:
// use UART_Write() here
// remove instances of Display_printf() here

case SC_EVT_SCAN_DISABLED:
UART_close(uart);
dispHandle = Display_open(Display_Type_ANY, NULL);
Display_printf(dispHandle, SC_ROW_NON_CONN, 0, "%d devices discovered",numReport);

    I found that any tricks trying to use the Display module resulted in an error, likely because I was passing too much data too quickly.