Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

- u -

• uart_status : uart_hw_status_t
• underflow_mode : spwm_pwm_cfg_t
• unit_size : dma_1d_config_t, dma_2d_config_t
• user_data : dma_channel_config_t, spi_xfer_config, uart_get_config_t, uart_put_config_t