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
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
/*
* This file is part of FH8620 BSP for RT-Thread distribution.
*
* Copyright (c) 2016 Shanghai Fullhan Microelectronics Co., Ltd.
* All rights reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Visit http://www.fullhan.com to get contact with Fullhan.
*
* Change Logs:
* Date Author Notes
*/
#ifndef FH_UART_H_
#define FH_UART_H_
/****************************************************************************
* #include section
* add #include here if any
***************************************************************************/
#include "fh_def.h"
/****************************************************************************
* #define section
* add constant #define here if any
***************************************************************************/
#define UART_RBR RBRTHRDLL
#define UART_THR RBRTHRDLL
#define UART_DLL RBRTHRDLL
#define UART_DLH DLHIER
#define UART_IER DLHIER
#define UART_IIR IIRFCR
#define UART_FCR IIRFCR
/* LSR register bits */
#define UART_LSR_DR (1 << 0)
#define UART_LSR_OE (1 << 1)
#define UART_LSR_PE (1 << 2)
#define UART_LSR_FE (1 << 3)
#define UART_LSR_BI (1 << 4)
#define UART_LSR_THER (1 << 5)
#define UART_LST_TEMT (1 << 6)
#define UART_LSR_RFE (1 << 7)
/* LCR register bits */
#define UART_LCR_DLS5 0x00
#define UART_LCR_DLS6 0x01
#define UART_LCR_DLS7 0x02
#define UART_LCR_DLS8 0x03
#define UART_LCR_STOP1 0
#define UART_LCR_STOP2 (1 << 2)
#define UART_LCR_PEN (1 << 3)
#define UART_LCR_EVEN (1 << 4)
#define UART_LCR_SP (1 << 5)
#define UART_LCR_BC (1 << 6)
#define UART_LCR_DLAB (1 << 7)
/* MCR register bits */
#define UART_MCR_DTR (1 << 0)
#define UART_MCR_RTS (1 << 1)
#define UART_MCR_OUT1 (1 << 2)
#define UART_MCR_OUT2 (1 << 3)
#define UART_MCR_LB (1 << 4)
#define UART_MCR_AFCE (1 << 5)
#define UART_MCR_SIRE (1 << 6)
/* FCR register bits */
#define UART_FCR_FIFOE (1 << 0)
#define UART_FCR_RFIFOR (1 << 1)
#define UART_FCR_XFIFOR (1 << 2)
#define UART_FCR_DMAM (1 << 3)
#define UART_FCR_TET_EMPTY (0x00 << 4)
#define UART_FCR_TET_TWO (0x01 << 4)
#define UART_FCR_TET_1_4 (0x02 << 4)
#define UART_FCR_TET_1_2 (0x03 << 4)
#define UART_FCR_RT_ONE (0x00 << 6)
#define UART_FCR_RT_1_4 (0x01 << 6)
#define UART_FCR_RT_1_2 (0x02 << 6)
#define UART_FCR_RT_L2 (0x03 << 6)
/* IER register bits */
#define UART_IER_ERBFI (1 << 0)
#define UART_IER_ETBEI (1 << 1)
#define UART_IER_ELSI (1 << 2)
#define UART_IER_EDSSI (1 << 3)
#define UART_IER_PTIME (1 << 7)
/* USR register bits */
#define UART_USR_BUSY (1 << 0)
#define UART_USR_TFNF (1 << 1)
#define UART_USR_TFE (1 << 2)
#define UART_USR_RNFE (1 << 3)
#define UART_USR_RFE (1 << 4)
/* IIR register bits */
#define UART_IIR_RIID_MASK 0x0f
#define UART_IIR_MODEM 0x00
#define UART_IIR_NOINT 0x01
#define UART_IIR_THREMPTY 0x02
#define UART_IIR_RDATD 0x04
#define UART_IIR_RLINEST 0x06
#define UART_IIR_BUSY 0x07
#define UART_IIR_CHRTOUT 0x0c
#define UART_IIR_FIFOSE (0x03 << 6)
//uart baudrate cofig
//#define UART_CLOCK_FREQ (27000000) //27MHZ
//
//#define DIV(n) (((UART_CLOCK_FREQ/(n))+8)/16)
/****************************************************************************
* ADT section
* add Abstract Data Type definition here
***************************************************************************/
typedef struct {
RwReg RBRTHRDLL; /* UART_RBR, UART_THR, UART_DLL */
RwReg DLHIER; /* UART_DLH, UART_IER */
RwReg IIRFCR; /* UART_IIR, UART_FCR */
RwReg UART_LCR; /*(0x000c) */
RwReg UART_MCR; /*(0x0010) */
RwReg UART_LSR; /*(0x0014) */
RwReg UART_MSR; /*(0x0018) */
RwReg UART_SCR; /*(0x001c) */
RwReg reserved[20];
RwReg UART_FAR; /* (0x0070) */
RwReg UART_TFR; /* (0x0074) */
RwReg UART_RFW; /* (0x0078) */
RwReg UART_USR; /* (0x007c) */
RwReg UART_TFL; /* (0x0080) */
RwReg UART_RFL; /* (0x0084) */
RwReg UART_SRR; /* (0x0088) */
RwReg reserved1[3];
RwReg UART_SFE; /* (0x0098) */
RwReg UART_SRT; /* (0x009c) */
RwReg UART_STET; /* (0x00a0) */
RwReg UART_HTX; /* (0x00a4) */
RwReg UART_DMASA; /* (0x00a8) */
RwReg reserved2[18];
RwReg UART_CPR; /* (0x00f4) */
RwReg UART_UCV; /* (0x00f8) */
RwReg UART_CTR; /* (0x00fc) */
}uart;
struct fh_uart {
uart *uart_port;
int irq;
};
enum data_bits {
UART_DATA_BIT5 = 0,
UART_DATA_BIT6 = 1,
UART_DATA_BIT7 = 2,
UART_DATA_BIT8 = 3
};
enum stop_bits {
UART_STOP_BIT1 = 0,
UART_STOP_BIT1_5 = 1,
UART_STOP_BIT2 = 2
};
enum parity {
UART_PARITY_NONE = 0,
UART_PARITY_EVEN = 1,
UART_PARITY_ODD = 2,
UART_PARITY_ST = 3 /* Stick Parity */
};
#define UART_CLOCK_FREQ (30000000) //30MHZ
typedef enum enum_uart_baudrate{
BAUDRATE_9600 = (((UART_CLOCK_FREQ/9600)+8)/16),
BAUDRATE_19200 = (((UART_CLOCK_FREQ/19200)+8)/16),
BAUDRATE_38400 = (((UART_CLOCK_FREQ/38400)+8)/16),
BAUDRATE_57600 = (((UART_CLOCK_FREQ/57600)+8)/16),
BAUDRATE_115200 = (((UART_CLOCK_FREQ/115200)+8)/16),
BAUDRATE_194000 = (((UART_CLOCK_FREQ/194000)+8)/16),
}uart_baudrate_e;
/****************************************************************************
* extern variable declaration section
***************************************************************************/
extern int uart_init(uart *port);
extern UINT32 uart_get_status(uart *port);
extern void uart_configure(uart *port, enum data_bits data_bit,
enum stop_bits stop_bit, enum parity parity,
UINT32 buard_rate, UINT32 uart_clk);
extern int uart_enable_irq(uart *port, UINT32 mode);
extern int uart_disable_irq(uart *port, UINT32 mode);
extern UINT32 uart_get_iir_status(uart *port);
extern UINT32 uart_get_line_status(uart *port);
extern UINT32 uart_is_rx_ready(uart *port);
extern UINT8 uart_getc(uart *port);
extern void uart_putc(uart *port, UINT8 c);
extern void uart_set_fifo_mode(uart *port, UINT32 fifo_mode);
/****************************************************************************
* section
* add function prototype here if any
***************************************************************************/
#endif /* #ifndef _TIMER_ */
|
