1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "dprintf.h"
33 #include <stdarg.h>
34 #include <stdio.h>
35 #include <csi_config.h>
36 #include "pin.h"
37 #include "drv_gpio.h"
38 #include "drv_usart.h"
39 #include "los_compiler.h"
40 #include "los_interrupt.h"
41
42 #define BUFSIZE 256
43 #define UART_BAUDRATE 115200
44
45 usart_handle_t g_consoleHandle;
46
uart_early_init(void)47 void uart_early_init(void)
48 {
49 drv_pinmux_config(UART_TXD0, CONSOLE_TXD);
50 drv_pinmux_config(UART_RXD0, CONSOLE_RXD);
51
52 g_consoleHandle = csi_usart_initialize(CONSOLE_IDX, NULL);
53 csi_usart_config(g_consoleHandle, UART_BAUDRATE, USART_MODE_ASYNCHRONOUS,
54 USART_PARITY_NONE, USART_STOP_BITS_1, USART_DATA_BITS_8);
55 }
56
UartPutc(CHAR c)57 STATIC VOID UartPutc(CHAR c)
58 {
59 (VOID)csi_usart_putchar(g_consoleHandle, c);
60 }
61
FuncPuts(const CHAR * s,VOID (* funcPutc)(CHAR c))62 STATIC VOID FuncPuts(const CHAR *s, VOID (*funcPutc)(CHAR c))
63 {
64 UINT32 intSave;
65
66 intSave = LOS_IntLock();
67 while (*s) {
68 funcPutc(*s++);
69 }
70 LOS_IntRestore(intSave);
71 }
72
printf(const CHAR * fmt,...)73 INT32 printf(const CHAR *fmt, ...)
74 {
75 CHAR buf[BUFSIZE] = { 0 };
76 va_list ap;
77 va_start(ap, fmt);
78 int len = vsnprintf_s(buf, sizeof(buf), BUFSIZE - 1, fmt, ap);
79 va_end(ap);
80 if (len > 0) {
81 FuncPuts(buf, UartPutc);
82 } else {
83 FuncPuts("printf error!\n", UartPutc);
84 }
85
86 return len;
87 }
88
89