| /* |
| * Copyright (c) 2023 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * Header file for the INTEL LW UART |
| */ |
| |
| #ifndef ZEPHYR_DRIVERS_SERIAL_UART_INTEL_LW_H_ |
| #define ZEPHYR_DRIVERS_SERIAL_UART_INTEL_LW_H_ |
| |
| /* End of packet feature. |
| * Driver will trigger interrupt upon receiving end of package character. |
| * Please enable CONFIG_UART_INTEL_LW_EOP to use this feature. |
| * Use the api: uart_drv_cmd with CMD_ENABLE_EOP to enable the feature. |
| * This cmd will write the ip register and also set a flag to the driver. |
| * The flag will modify uart_irq_callback_user_data_set |
| * to set call back function for eop interrupt. |
| * Flag is cleared after uart_irq_callback_user_data_set is called. |
| */ |
| #define CMD_ENABLE_EOP 0x01 |
| #define CMD_DISABLE_EOP 0x02 |
| |
| /* Transmit break feature. |
| * Use uart_drv_cmd with CMD_TRBK_EN to break ongoing transmit. |
| * After this cmd, uart is unable to transmit any data. |
| * Please use CMD_TRBK_DIS to resume normal operation. |
| * Please also call uart_intel_lw_err_check, to clear the error caused |
| * by transmit break. |
| */ |
| #define CMD_TRBK_EN 0x03 |
| #define CMD_TRBK_DIS 0x04 |
| |
| /* This driver supports interrupt driven api. |
| * Polling for data under normal operation, might cause unexpected behaviour. |
| * If users wish to poll for data, please use the api: |
| * uart_drv_cmd with CMD_POLL_ASSERT_RTS before polling out/in. |
| * Then use CMD_POLL_DEASSERT_RTS to resume normal operation after polling. |
| */ |
| #define CMD_POLL_ASSERT_RTS 0x05 |
| #define CMD_POLL_DEASSERT_RTS 0x06 |
| |
| #endif /* ZEPHYR_DRIVERS_SERIAL_UART_INTEL_LW_H_ */ |
