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
|
/* Copyright (c) 2023, Canaan Bright Sight Co., Ltd
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 2006-2025 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <rtdevice.h>
#include <rtdbg.h>
#include <utest.h>
#include "drv_uart.h"
#include <string.h>
/*
* 测试 UART0 在 DMA 模式下的数据发送功能，以及 UART0 在中断模式下的数据接收功能
*
* 功能说明：
* 1. 发送测试（uart_tx_demo）：
* - 查找名为 "uart0" 的串口设备；
* - 打开设备，并配置为 DMA 发送（DMA_TX）+ 流式传输（STREAM）模式；
* - 设置串口参数：
* - 波特率：115200；
* - 数据位：8 位；
* - 停止位：1 位；
* - 校验位：无；
* - 动态分配一段 2000 字节的内存作为发送缓冲区：
* - 填充 1999 个字符 '['；
* - 最后添加 '\0' 作为字符串结尾；
* - 调用 `rt_device_write` 接口，将缓冲区数据通过 UART0 DMA 方式发送出去；
* - 发送完成后关闭 UART0 设备并释放发送缓冲区内存。
*
* 2. 接收测试（uart_rx_demo）：
* - 查找名为 "uart0" 的串口设备；
* - 打开设备，并配置为中断接收（INT_RX）+ 流式传输（STREAM）模式；
* - 设置串口参数（波特率 115200，8N1，无校验）；
* - 在 5 秒超时范围内循环读取 UART0 接收到的数据：
* - 如果有数据，则立即打印接收到的内容；
* - 如果没有数据，每隔 2.5 秒检查一次；
* - 超时或接收后关闭 UART0 设备。
*
* 硬件说明：
* - 本测试基于 K230 平台；
* - uart_tx_demo 用于发送测试，可在串口调试工具上观察 1999 个 '[' 输出；
* - uart_rx_demo 用于接收测试，在 5 秒内通过外部串口助手发送数据，可在日志中看到接收结果；
*
*/
#define UART0_DEV_NAME "uart0"
#define TEXT_LENGTH 2000
#define TEXT_TIME 5
#define RX_TEXT_PERIOD 2500
static void uart_tx_demo(void)
{
rt_device_t uart_dev;
char *msg = rt_malloc(TEXT_LENGTH);
for (int i = 0; i < TEXT_LENGTH - 1; i++)
{
msg[i] = '[';
}
msg[TEXT_LENGTH-1]='\0';
rt_err_t ret;
uart_dev = rt_device_find(UART0_DEV_NAME);
uassert_not_null(uart_dev);
ret = rt_device_open(uart_dev, RT_DEVICE_FLAG_DMA_TX | RT_DEVICE_FLAG_STREAM);
uassert_int_equal(ret, RT_EOK);
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
config.baud_rate = 115200;
config.data_bits = DATA_BITS_8;
config.stop_bits = STOP_BITS_1;
config.parity = PARITY_NONE;
ret = rt_device_control(uart_dev, RT_DEVICE_CTRL_CONFIG, &config);
uassert_int_equal(ret, RT_EOK);
size_t len = TEXT_LENGTH;
ret = rt_device_write(uart_dev, 0, msg, len);
uassert_int_equal(ret, len);
ret = rt_device_close(uart_dev);
uassert_int_equal(ret, RT_EOK);
rt_free(msg);
}
static void uart_rx_demo(void)
{
rt_device_t uart_dev;
char rx_buf[32];
rt_size_t rx_len;
uart_dev = rt_device_find(UART0_DEV_NAME);
uassert_not_null(uart_dev);
rt_err_t ret = rt_device_open(uart_dev, RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM);
uassert_int_equal(ret, RT_EOK);
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
config.baud_rate = 115200;
config.data_bits = DATA_BITS_8;
config.stop_bits = STOP_BITS_1;
config.parity = PARITY_NONE;
ret = rt_device_control(uart_dev, RT_DEVICE_CTRL_CONFIG, &config);
uassert_int_equal(ret, RT_EOK);
LOG_I("UART RX demo: please send data to uart0 within 5s...\n");
rt_tick_t timeout = rt_tick_get() + RT_TICK_PER_SECOND * TEXT_TIME;
while (rt_tick_get() < timeout)
{
rx_len = rt_device_read(uart_dev, 0, rx_buf, sizeof(rx_buf) - 1);
if (rx_len > 0)
{
rx_buf[rx_len] = '\0';
LOG_I("UART RX got %d bytes: %s\n", rx_len, rx_buf);
break;
}
rt_thread_mdelay(RX_TEXT_PERIOD);
}
ret = rt_device_close(uart_dev);
uassert_int_equal(ret, RT_EOK);
}
static void uart_testcase(void)
{
UTEST_UNIT_RUN(uart_tx_demo);
UTEST_UNIT_RUN(uart_rx_demo);
}
static rt_err_t utest_tc_init(void)
{
return RT_EOK;
}
static rt_err_t utest_tc_cleanup(void)
{
return RT_EOK;
}
UTEST_TC_EXPORT(uart_testcase, "bsp.k230.drivers.uart", utest_tc_init, utest_tc_cleanup, 10);
|
