2 Replies Latest reply on Apr 18, 2016 11:50 PM by dhritimank_

    FX3 UART with GPIO pins 46&47



      I would like to use UART, but configure UART_RT S and UART_CT S as GPIO pins and only use UART_TX and UART_RX for my UART communication.  Is this configuration possible?


      When I try to configure the io matrix using the settings below, the firmware won't load.


          CyU3PMemSet ((uint8_t *)&io_cfg, 0, sizeof(io_cfg));
          io_cfg.isDQ32Bit = CyFalse;
          io_cfg.s0Mode = CY_U3P_SPORT_INACTIVE;
          io_cfg.s1Mode = CY_U3P_SPORT_INACTIVE;
          io_cfg.useUart   = CyTrue;
          io_cfg.useI2C    = CyFalse;
          io_cfg.useI2S    = CyFalse;
          io_cfg.useSpi    = CyTrue;
          io_cfg.lppMode   = CY_U3P_IO_MATRIX_LPP_DEFAULT;


          io_cfg.gpioSimpleEn[0]  = 0x0;
          io_cfg.gpioSimpleEn[1]  = 0x4000; // GPIO46 as simple
          io_cfg.gpioComplexEn[0] = 0x0;
          io_cfg.gpioComplexEn[1] = 0x8000; // GPIO47 as complex