SPS how to disable hardware flow control

Hi Remi,

Thank you for posting your question online.
The SPS SDK is supported with 4-Wire UART. The HW Flow Control is mandatory in order to ensure the Extended Sleep and prevent data loss during communication.
Please refer on dma_uart_sps.c file, on the dma_uart_sps_init API:

void dma_uart_sps_init(UART_BAUDRATE baudr, uint8_t mode)
{
    GPIO_RegisterCallback(GPIO0_IRQn, dma_uart_gpio_callback);

    bool pin_status = GPIO_GetPinStatus(gpio_uart1_cts.port, gpio_uart1_cts.pin);
    dma_uart_sps_cts_update(pin_status);

    const uart_cfg_t dma_uart_cfg =
    {
        .uart_err_cb = uart_user_no_err_expected_cb,
        .uart_tx_cb = dma_uart_tx_callback,
        .uart_rx_cb = dma_uart_rx_callback,
        .data_bits = UART_DATABITS_8,
        .parity = UART_PARITY_NONE,
        .stop_bits = UART_STOPBITS_1,
        .use_fifo = UART_FIFO_EN,
        .auto_flow_control = UART_AFCE_EN,
        .uart_dma_priority = DMA_PRIO_7,
        .baud_rate = baudr,
        .uart_dma_channel = UART_DMA_CHANNEL_01,
    };
    uart_initialize(DSPS_UART, &dma_uart_cfg);
}