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
|
/*
* stm-uart.c
* ----------
* Functions for sending strings and numbers over the uart.
*
* Copyright (c) 2015, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*/
#include "stm32f4xx_hal.h"
#include "stm-uart.h"
#include <string.h>
UART_HandleTypeDef huart_mgmt;
UART_HandleTypeDef huart_user;
#define DEFAULT_UART STM_UART_USER
inline UART_HandleTypeDef *_which_uart(enum stm_uart_port port)
{
if (port == STM_UART_USER) {
return &huart_user;
} else if (port == STM_UART_MGMT) {
return &huart_mgmt;
}
return NULL;
}
/* send a single character */
HAL_StatusTypeDef uart_send_char(uint8_t ch)
{
return uart_send_char2(DEFAULT_UART, ch);
}
HAL_StatusTypeDef uart_send_char2(enum stm_uart_port port, uint8_t ch)
{
UART_HandleTypeDef *uart = _which_uart(port);
if (uart)
return HAL_UART_Transmit(uart, &ch, 1, 0x1);
return HAL_ERROR;
}
/* receive a single character */
HAL_StatusTypeDef uart_recv_char(uint8_t *cp)
{
return uart_recv_char2(DEFAULT_UART, cp, HAL_MAX_DELAY);
}
/* receive a single character */
HAL_StatusTypeDef uart_recv_char2(enum stm_uart_port port, uint8_t *cp, uint32_t timeout)
{
UART_HandleTypeDef *uart = _which_uart(port);
if (uart)
return HAL_UART_Receive(uart, cp, 1, timeout);
return HAL_ERROR;
}
/* send a string */
HAL_StatusTypeDef uart_send_string(char *s)
{
return uart_send_string2(DEFAULT_UART, s);
}
/* send a string */
HAL_StatusTypeDef uart_send_string2(enum stm_uart_port port, const char *s)
{
UART_HandleTypeDef *uart = _which_uart(port);
if (uart)
return HAL_UART_Transmit(uart, (uint8_t *) s, strlen(s), 0x1);
return HAL_ERROR;
}
/* send raw bytes */
HAL_StatusTypeDef uart_send_bytes(enum stm_uart_port port, uint8_t *buf, size_t len)
{
UART_HandleTypeDef *uart = _which_uart(port);
if (uart)
return HAL_UART_Transmit(uart, (uint8_t *) buf, (uint32_t) len, 0x1);
return HAL_ERROR;
}
/* Generalized routine to send binary, decimal, and hex integers.
* This code is adapted from Chris Giese's printf.c
*/
HAL_StatusTypeDef uart_send_number(uint32_t num, uint8_t digits, uint8_t radix)
{
return uart_send_number2(DEFAULT_UART, num, digits, radix);
}
HAL_StatusTypeDef uart_send_number2(enum stm_uart_port port, uint32_t num, uint8_t digits, uint8_t radix)
{
#define BUFSIZE 32
char buf[BUFSIZE];
char *where = buf + BUFSIZE;
UART_HandleTypeDef *uart = _which_uart(port);
/* initialize buf so we can add leading 0 by adjusting the pointer */
memset(buf, '0', BUFSIZE);
/* build the string backwards, starting with the least significant digit */
do {
uint32_t temp;
temp = num % radix;
where--;
if (temp < 10)
*where = temp + '0';
else
*where = temp - 10 + 'A';
num = num / radix;
} while (num != 0);
if (where > buf + BUFSIZE - digits)
/* pad with leading 0 */
where = buf + BUFSIZE - digits;
else
/* number is larger than the specified number of digits */
digits = buf + BUFSIZE - where;
return HAL_UART_Transmit(uart, (uint8_t *) where, digits, 0x1);
}
|
