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
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
|
/*
* Copyright (c) 2006-2025 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2025-04-08 Hydevcode the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <rtdbg.h>
#include "board.h"
#include "drv_uart_v2.h"
#include "mmu.h"
#ifdef RT_USING_SERIAL_V2
#include <rtdbg.h>
#if !defined(BSP_USING_UART0) && !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2) && !defined(BSP_USING_UART3)
#error "Please define at least one BSP_USING_UARTx"
/* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
#endif
struct hw_uart_device
{
rt_uint32_t hw_base;
rt_uint32_t irqno;
struct rt_serial_device *serial;
char *device_name;
};
#define UART_DR(base) __REG32(base + 0x00)
#define UART_FR(base) __REG32(base + 0x18)
#define UART_CR(base) __REG32(base + 0x30)
#define UART_IMSC(base) __REG32(base + 0x38)
#define UART_ICR(base) __REG32(base + 0x44)
#define UART_IFLS(base) __REG32(base + 0x34)
#define UART_TCR(base) __REG32(base + 0x80)
#define UART_ITOP(base) __REG32(base + 0x88)
#define UART_LCR_H(base) __REG32(base + 0x2C)
#define UART_DMACR(base) __REG32(base + 0x48)
#define UARTITOP_RXINTR 0x400
#define UARTLCR_H_FEN 0x10
#define UARTFR_RXFE 0x10
#define UARTFR_TXFF 0x20
#define UARTFR_RXFF 0x40
#define UARTFR_TXFE 0x80
#define UARTFR_BUSY 0x08
#define UARTICR_RXIC 0x10
#define UARTICR_TXIC 0x20
#define UARTIMSC_RXIM 0x10
#define UARTIMSC_RTIM 0x40
#define UARTIMSC_TXIM 0x20
#if defined(BSP_USING_UART0)
struct rt_serial_device serial0;
#endif
#if defined(BSP_USING_UART1)
struct rt_serial_device serial1;
#endif
#if defined(BSP_USING_UART2)
struct rt_serial_device serial2;
#endif
#if defined(BSP_USING_UART3)
struct rt_serial_device serial3;
#endif
static struct hw_uart_device _uart_device[] = {
#if defined(BSP_USING_UART0)
{
REALVIEW_UART0_BASE,
IRQ_PBA8_UART0,
&serial0,
"uart0",
},
#endif
#if defined(BSP_USING_UART1)
{
REALVIEW_UART1_BASE,
IRQ_PBA8_UART1,
&serial1,
"uart1",
},
#endif
#if defined(BSP_USING_UART2)
{
REALVIEW_UART2_BASE,
IRQ_PBA8_UART2,
&serial2,
"uart2",
},
#endif
#if defined(BSP_USING_UART3)
{
REALVIEW_UART3_BASE,
IRQ_PBA8_UART3,
&serial3,
"uart3",
},
#endif
};
/**
* @brief UART common interrupt process. This
*
* @param serial Serial device
*/
static void rt_hw_uart_isr(int irqno, void *param)
{
struct rt_serial_device *serial = (struct rt_serial_device *)param;
RT_ASSERT(serial != RT_NULL);
struct hw_uart_device *uart;
uart = (struct hw_uart_device *)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if((UART_FR(uart->hw_base) & UARTFR_RXFF) && (UART_IMSC(uart->hw_base) & UARTIMSC_RXIM))
{
struct rt_serial_rx_fifo *rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo *)serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
char rec_ch;
while (!(UART_FR(uart->hw_base) & UARTFR_RXFE))
{
rec_ch = UART_DR(uart->hw_base) & 0xff;
rt_hw_serial_control_isr(serial, RT_HW_SERIAL_CTRL_PUTC, &rec_ch);
}
rt_hw_serial_isr(serial,RT_SERIAL_EVENT_RX_IND);
}
else if(UART_IMSC(uart->hw_base) & UARTIMSC_RTIM)
{
struct rt_serial_rx_fifo *rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo *)serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
char rec_ch;
while (!(UART_FR(uart->hw_base) & UARTFR_RXFE))
{
rec_ch = UART_DR(uart->hw_base) & 0xff;
rt_hw_serial_control_isr(serial, RT_HW_SERIAL_CTRL_PUTC, &rec_ch);
}
rt_hw_serial_isr(serial,RT_SERIAL_EVENT_RX_IND);
}
else if((UART_IMSC(uart->hw_base) & UARTIMSC_TXIM))
{
UART_ICR(uart->hw_base) |= UARTICR_TXIC;
rt_hw_serial_isr(serial,RT_SERIAL_EVENT_TX_DONE);
}
}
static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
return RT_EOK;
}
static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct hw_uart_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct hw_uart_device *)serial->parent.user_data;
rt_ubase_t ctrl_arg = (rt_ubase_t) arg;
if(ctrl_arg & (RT_DEVICE_FLAG_RX_BLOCKING | RT_DEVICE_FLAG_RX_NON_BLOCKING))
{
ctrl_arg = RT_DEVICE_FLAG_INT_RX;
}
else if(ctrl_arg & (RT_DEVICE_FLAG_TX_BLOCKING | RT_DEVICE_FLAG_TX_NON_BLOCKING))
{
ctrl_arg = RT_DEVICE_FLAG_INT_TX;
}
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
if (ctrl_arg == RT_DEVICE_FLAG_INT_RX)
{
/* disable rx irq */
UART_IMSC(uart->hw_base) &= ~UARTIMSC_RXIM;
UART_IMSC(uart->hw_base) &= ~UARTIMSC_RTIM;
}
else if (ctrl_arg == RT_DEVICE_FLAG_INT_TX)
{
/* disable tx irq */
UART_IMSC(uart->hw_base) &= ~UARTIMSC_TXIM;
}
break;
case RT_DEVICE_CTRL_SET_INT:
if (ctrl_arg == RT_DEVICE_FLAG_INT_RX)
{
/* enable rx irq */
UART_IMSC(uart->hw_base) |= UARTIMSC_RXIM;
UART_IMSC(uart->hw_base) |= UARTIMSC_RTIM;
rt_hw_interrupt_umask(uart->irqno);
} else if (ctrl_arg == RT_DEVICE_FLAG_INT_TX)
{
/* enable tx irq */
UART_IMSC(uart->hw_base) |= UARTIMSC_TXIM;
rt_hw_interrupt_umask(uart->irqno);
}
break;
case RT_DEVICE_CTRL_CONFIG:
uart_control(serial, RT_DEVICE_CTRL_SET_INT, (void *)ctrl_arg);
break;
}
return RT_EOK;
}
static int uart_putc(struct rt_serial_device *serial, char ch)
{
struct hw_uart_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct hw_uart_device *)serial->parent.user_data;
while (UART_FR(uart->hw_base) & UARTFR_TXFF);
UART_DR(uart->hw_base) = ch;
return 1;
}
static int uart_getc(struct rt_serial_device *serial)
{
int ch;
struct hw_uart_device *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct hw_uart_device *)serial->parent.user_data;
ch = -1;
if (!(UART_FR(uart->hw_base) & UARTFR_RXFE))
{
ch = UART_DR(uart->hw_base) & 0xff;
}
return ch;
}
static rt_ssize_t uart_transmit(struct rt_serial_device *serial,
rt_uint8_t *buf,
rt_size_t size,
rt_uint32_t tx_flag)
{
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(buf != RT_NULL);
RT_ASSERT(size);
struct hw_uart_device *uart = (struct hw_uart_device *)serial->parent.user_data;
struct rt_serial_tx_fifo *tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo *) serial->serial_tx;
uint8_t ch = 0;
RT_ASSERT(tx_fifo != RT_NULL);
if (size > 0)
{
if (UART_IMSC(uart->hw_base) & UARTIMSC_TXIM)
{
UART_IMSC(uart->hw_base) &= ~UARTIMSC_TXIM;
if(rt_ringbuffer_getchar(&tx_fifo->rb, &ch))
{
while (UART_FR(uart->hw_base) & UARTFR_TXFF);
UART_DR(uart->hw_base) = ch;
}
UART_IMSC(uart->hw_base) |= UARTIMSC_TXIM;
}
}
return size;
}
static const struct rt_uart_ops _uart_ops = {
.configure = uart_configure,
.control = uart_control,
.putc = uart_putc,
.getc = uart_getc,
.transmit = uart_transmit
};
static int uart_config(void)
{
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#ifdef BSP_USING_UART0
_uart_device[0].serial->config = config;
_uart_device[0].serial->config.rx_bufsz = BSP_UART0_RX_BUFSIZE;
_uart_device[0].serial->config.tx_bufsz = BSP_UART0_TX_BUFSIZE;
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
_uart_device[1].serial->config = config;
_uart_device[1].serial->config.rx_bufsz = BSP_UART1_RX_BUFSIZE;
_uart_device[1].serial->config.tx_bufsz = BSP_UART1_TX_BUFSIZE;
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
_uart_device[2].serial->config = config;
_uart_device[2].serial->config.rx_bufsz = BSP_UART2_RX_BUFSIZE;
_uart_device[2].serial->config.tx_bufsz = BSP_UART2_TX_BUFSIZE;
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
_uart_device[3].serial->config = config;
_uart_device[3].serial->config.rx_bufsz = BSP_UART3_RX_BUFSIZE;
_uart_device[3].serial->config.tx_bufsz = BSP_UART3_TX_BUFSIZE;
#endif /* BSP_USING_UART3 */
return RT_EOK;
}
int rt_hw_uart_init(void)
{
rt_err_t err = RT_EOK;
uart_config();
for (uint32_t i = 0; i < sizeof(_uart_device) / sizeof(_uart_device[0]); i++)
{
#ifdef RT_USING_SMART
_uart_device[i].hw_base = (uint32_t)rt_ioremap((void*)_uart_device[i].hw_base, 0x1000);
#endif
_uart_device[i].serial->ops = &_uart_ops;
/* register UART device */
err = rt_hw_serial_register(_uart_device[i].serial,
_uart_device[i].device_name,
RT_DEVICE_FLAG_RDWR,
(void*)&_uart_device[i]);
rt_hw_interrupt_install(_uart_device[i].irqno, rt_hw_uart_isr, _uart_device[i].serial, _uart_device[i].device_name);
/* enable Rx and Tx of UART */
UART_CR(_uart_device[i].hw_base) = (1 << 0) | (1 << 8) | (1 << 9);
UART_LCR_H(_uart_device[i].hw_base) =(1 << 4);
UART_IFLS(_uart_device[i].hw_base) =0;
UART_IFLS(_uart_device[i].hw_base) =(1 << 3);
}
return err;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
#endif /* RT_USING_SERIAL_V2 */
|
