1 /*
2 * Copyright (c) 2006-2021, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2020-08-20 zx.chen first implementation
9 */
10
11 #include <rtthread.h>
12
13 #ifdef RT_USING_CONSOLE
14
15 #include <rthw.h>
16 #include <rtdevice.h>
17
18 #include <stdint.h>
19 #include <stdio.h>
20 #include <string.h>
21 #include <stdbool.h>
22
23 #include "board.h"
24 #include "soc.h"
25 #include "ck_usart.h"
26 #include "drv_usart.h"
27 #include "pin_name.h"
28
29
30
31 __attribute__((isr)) void ck_usart0_irqhandler(void);
32
33 struct
34 {
35 uint32_t base;
36 uint32_t irq;
37 void *handler;
38 }
39 const sg_usart_config[CONFIG_USART_NUM] =
40 {
41 {CSKY_UART_BASE, UART_IRQn, ck_usart0_irqhandler},
42 };
43
44
target_usart_init(int32_t idx,uint32_t * base,uint32_t * irq,void ** handler)45 int32_t target_usart_init(int32_t idx, uint32_t *base, uint32_t *irq, void **handler)
46 {
47 if (idx >= CONFIG_USART_NUM)
48 {
49 return -1;
50 }
51
52 if (base != NULL)
53 {
54 *base = sg_usart_config[idx].base;
55 }
56
57 if (irq != NULL)
58 {
59 *irq = sg_usart_config[idx].irq;
60 }
61
62 if (handler != NULL)
63 {
64 *handler = sg_usart_config[idx].handler;
65 }
66
67 return idx;
68 }
69
70
71 #ifdef RT_USING_UART1
72 #define UART_TXD1 PA10_TXD1_PWM1_XX_SIROUT1
73 #define UART_RXD1 PA11_RXD1_PWM2_XX_SIRIN1
74
75 static usart_handle_t uart1_handle;
76 static struct rt_serial_device serial1;
77
ck_usart0_irqhandler(void)78 __attribute__((isr)) void ck_usart0_irqhandler(void)
79 {
80 rt_hw_serial_isr(&serial1,RT_SERIAL_EVENT_RX_IND);
81 }
82 #endif
83
84 /*
85 * UART interface
86 */
uart_configure(struct rt_serial_device * serial,struct serial_configure * cfg)87 static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
88 {
89 int ret;
90 usart_handle_t uart;
91
92 uint32_t bauds;
93 usart_mode_e mode;
94 usart_parity_e parity;
95 usart_stop_bits_e stopbits;
96 usart_data_bits_e databits;
97
98 RT_ASSERT(serial != RT_NULL);
99 uart = (usart_handle_t)serial->parent.user_data;
100 RT_ASSERT(uart != RT_NULL);
101
102 /* set baudrate parity...*/
103 bauds = cfg->baud_rate;
104 mode = USART_MODE_ASYNCHRONOUS;
105
106 if (cfg->parity == PARITY_EVEN)
107 parity = USART_PARITY_EVEN;
108 else if (cfg->parity == PARITY_ODD)
109 parity = USART_PARITY_ODD;
110 else
111 parity = USART_PARITY_NONE;
112
113 stopbits = USART_STOP_BITS_1 ;
114 databits = USART_DATA_BITS_8;
115
116 ret = csi_usart_config(uart, bauds, USART_MODE_ASYNCHRONOUS, parity, stopbits, databits);
117
118 if (ret < 0)
119 {
120 return -RT_ERROR;
121 }
122
123 return RT_EOK;
124 }
125
uart_control(struct rt_serial_device * serial,int cmd,void * arg)126 static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg)
127 {
128 usart_handle_t uart;
129
130 RT_ASSERT(serial != RT_NULL);
131 uart = (usart_handle_t)serial->parent.user_data;
132 RT_ASSERT(uart != RT_NULL);
133
134 switch (cmd)
135 {
136 case RT_DEVICE_CTRL_CLR_INT:
137 /* Disable the UART Interrupt */
138 ck_usart_clr_int_flag(uart,IER_RDA_INT_ENABLE);
139 break;
140
141 case RT_DEVICE_CTRL_SET_INT:
142 /* Enable the UART Interrupt */
143 ck_usart_set_int_flag(uart,IER_RDA_INT_ENABLE);
144 break;
145 }
146
147 return (RT_EOK);
148 }
149
uart_putc(struct rt_serial_device * serial,char c)150 static int uart_putc(struct rt_serial_device *serial, char c)
151 {
152 usart_handle_t uart;
153
154 RT_ASSERT(serial != RT_NULL);
155 uart = (usart_handle_t)serial->parent.user_data;
156 RT_ASSERT(uart != RT_NULL);
157 csi_usart_putchar(uart,c);
158
159 return (1);
160 }
161
uart_getc(struct rt_serial_device * serial)162 static int uart_getc(struct rt_serial_device *serial)
163 {
164 int ch;
165 usart_handle_t uart;
166
167 RT_ASSERT(serial != RT_NULL);
168 uart = (usart_handle_t)serial->parent.user_data;
169 RT_ASSERT(uart != RT_NULL);
170
171
172 ch = csi_uart_getchar(uart);
173
174 return ch;
175 }
176
177 const struct rt_uart_ops _uart_ops =
178 {
179 uart_configure,
180 uart_control,
181 uart_putc,
182 uart_getc,
183 };
184
185
rt_hw_usart_init(void)186 int rt_hw_usart_init(void)
187 {
188 struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
189
190 #ifdef RT_USING_UART1
191 serial1.ops = & _uart_ops;
192 serial1.config = config;
193 serial1.config.bufsz = 2048;
194 serial1.config.baud_rate = 115200;
195
196 uart1_handle = csi_usart_initialize(0, NULL);
197
198 rt_hw_serial_register(&serial1,
199 "uart1",
200 RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
201 uart1_handle);
202 #endif
203
204 return 0;
205 }
206 INIT_BOARD_EXPORT(rt_hw_usart_init);
207 #endif
208