Set DA14683(AQFN) USB pin P1_1 & P2_2 as SPI MOSI & MISO pin

HI! PM_Dialog,

      I have custom DA14683 boards and got problem about set DA14683(AQFN) USB pin P1_1 & P2_2 as SPI MOSI & MISO pin.

      For pcb layout issue, my custom board need to setup P1_1(USB pin) & P2_2(USB pin) as SPI MOSI & MISO pin.

      I had trace SPI MOSI & MISO signal output and input by oscilloscope. It can trace waveform to verify hardware is work.

      But I can't get any data from SPI read function.

      I have try to set USB pin P1_1 as SPI MOSI and  P4_0 as SPI MISO pin. Then I can receive data from SPI read function.

      My question is

      Can DA14683 USB pin P1_1 & P2_2  setup as SPI MOSI & MISO pin by call REG_SET_BIT(CRG_PER, USBPAD_REG, USBPAD_EN); . ?

      My code, as below.

      REG_SET_BIT(CRG_PER, USBPAD_REG, USBPAD_EN);
//SPI
        hw_gpio_set_pin_function(HW_GPIO_PORT_MT6381_SPI_CLK, HW_GPIO_PIN_MT6381_SPI_CLK, HW_GPIO_MODE_OUTPUT, HW_GPIO_FUNC_SPI_CLK);

        hw_gpio_set_pin_function(HW_GPIO_PORT_MT6381_SPI_DI, HW_GPIO_PIN_MT6381_SPI_DI, HW_GPIO_MODE_INPUT, HW_GPIO_FUNC_SPI_DI);
        hw_gpio_set_pin_function(HW_GPIO_PORT_MT6381_SPI_DO, HW_GPIO_PIN_MT6381_SPI_DO, HW_GPIO_MODE_OUTPUT, HW_GPIO_FUNC_SPI_DO);
        hw_gpio_set_pin_function(HW_GPIO_PORT_MT6381_SPI_CSN, HW_GPIO_PIN_MT6381_SPI_CSN, HW_GPIO_MODE_OUTPUT, HW_GPIO_FUNC_SPI_EN);
        hw_gpio_set_active(HW_GPIO_PORT_MT6381_SPI_CSN, HW_GPIO_PIN_MT6381_SPI_CSN);

        ....

        mt6381_spi_handle = ad_spi_open(MT6381_SPI);

        spi_tx_buf[0] = SPI_CR_CMD;
        spi_tx_buf[1] = reg;
        spi_tx_buf[2] = addr;
        spi_tx_buf[3] = (data_size & 0xFF) - 1;
        spi_tx_buf[4] = (data_size & 0xFF00) >> 8;
        spi_tx_buf_data_size = 5;

        ad_spi_write(mt6381_spi_handle, spi_tx_buf, spi_tx_buf_data_size);

        memset(spi_tx_buf, 0, SPI_BUFFER_LEN);
        spi_tx_buf[0] = SPI_RD_CMD;
        spi_tx_buf_data_size = 1;
        ad_spi_transact(mt6381_spi_handle, spi_tx_buf, spi_tx_buf_data_size, spi_rx_buf, data_size);
        OS_DELAY_MS(SPI_DMA_CALLBACK_IDLE_TIME_MICROSECOND);
        memcpy(data_buf_ptr, spi_rx_buf, data_size);
        ad_spi_close(mt6381_spi_handle);

                                                    TKS

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