RT-Thread_v4.1.1

libcpu/arm/sep4020/serial.h

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2006-03-13     Bernard      first version
+ * 2009-04-20     yi.qiu      modified according bernard's stm32 version
+ * 2010-10-6      wangmeng    added sep4020 surpport
+ */
+
+#ifndef __SERIAL_H__
+#define __SERIAL_H__
+
+#include <sep4020.h>
+
+#define USTAT_RCV_READY     0x01    /* receive data ready */
+#define USTAT_TXB_EMPTY     0x40    /* tx buffer empty */
+#define BPS                 115200  /* serial baudrate */
+
+#define UART_RX_BUFFER_SIZE     64
+#define UART_TX_BUFFER_SIZE     64
+
+/*For sep4020's uart have several secondary function*/
+/*we use union to decribe it*/
+
+union dlbl_fifo
+{
+    rt_uint32_t dlbl;
+    rt_uint32_t rxfifo;
+    rt_uint32_t txfifo;
+};
+
+union dlbh_ier
+{
+    rt_uint32_t dlbh;
+    rt_uint32_t ier;
+};
+
+union iir_fcr
+{
+    rt_uint32_t iir;
+    rt_uint32_t fcr;
+};
+
+struct serial_int_rx
+{
+    rt_uint8_t  rx_buffer[UART_RX_BUFFER_SIZE];
+    rt_uint32_t read_index, save_index;
+};
+
+struct serial_int_tx
+{
+    rt_uint8_t  tx_buffer[UART_TX_BUFFER_SIZE];
+    rt_uint32_t write_index, save_index;
+};
+
+typedef struct uartport
+{
+    union dlbl_fifo dlbl_fifo;
+    union dlbh_ier  dlbh_ier;
+    union iir_fcr   iir_fcr;
+    rt_uint32_t lcr;
+    rt_uint32_t mcr;
+    rt_uint32_t lsr;
+    rt_uint32_t msr;
+}uartport;
+
+struct serial_device
+{
+    uartport* uart_device;
+
+    /* rx structure */
+    struct serial_int_rx* int_rx;
+
+    /* tx structure */
+    struct serial_int_tx* int_tx;
+};
+
+rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial);
+
+void rt_hw_serial_isr(rt_device_t device);
+
+
+#endif