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