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
|
/*
* File : board.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://openlab.rt-thread.com/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-23 Bernard first implementation
*
* 2011-12-17 nl1031 for MacroBlaze
*
*/
#include <rtthread.h>
#include <rthw.h>
#include "xbasic_types.h"
#include "board.h"
#include "xgpio.h"
#include "xparameters.h"
#include "xuartlite.h"
#include "xtmrctr.h"
#include "xintc.h"
#include "xstatus.h"
#include "xuartlite_l.h"
#include "xintc_l.h"
#ifdef RT_USING_UART1
#include "drivers/dev_serial.h"
#endif
#define TIMER_CNTR_0 0
#define PIV (XPAR_PROC_BUS_0_FREQ_HZ / RT_TICK_PER_SECOND)
#define LEDS_DEVICE_ID XPAR_LEDS_4BITS_DEVICE_ID
#define RS232_DEVICE_ID XPAR_USB_UART_DEVICE_ID
#ifdef RT_USING_UART1
#define USB_UART_BASE ((struct uartport *)XPAR_USB_UART_BASEADDR)
#endif
/* Global Variables: */
XTmrCtr timer; /* The instance of the timer */
XGpio gpio_output; /* The driver instance for GPIO Device configured as O/P */
XUartLite uart_lite; /* Instance of the UartLite device */
XIntc int_ctl; /* The instance of the Interrupt Controller */
static rt_uint32_t led_data;
static int cnt;
static void rt_hw_board_led_init(void);
/**
* This function will init led on the board
*/
static void rt_hw_board_led_init()
{
rt_uint32_t status;
led_data = 0;
cnt = 0;
status = XGpio_Initialize(&gpio_output, LEDS_DEVICE_ID);
if (status != XST_SUCCESS)
{
return;
}
/*
* Set the direction for all signals to be outputs
*/
XGpio_SetDataDirection(&gpio_output, 1, 0x0);
/*
* Set the GPIO outputs to high
*/
XGpio_DiscreteWrite(&gpio_output, 1, 3);
}
/**
* This function will take the led on board on.
*
* @param n the number nth led
*/
void rt_hw_board_led_on(rt_uint32_t led)
{
led_data |= led;
XGpio_DiscreteWrite(&gpio_output, 1, led_data);
}
/**
* This function will take the led on board off.
*
* @param n the number nth led
*/
void rt_hw_board_led_off(rt_uint32_t led)
{
led_data &= ~led;
XGpio_DiscreteWrite(&gpio_output, 1, led_data);
}
void rt_hw_led_flash(void)
{
volatile rt_uint32_t i;
rt_hw_board_led_off(1);
for (i = 0; i < 20000; i ++);
rt_hw_board_led_on(1);
for (i = 0; i < 20000; i ++);
}
#ifdef RT_USING_CONSOLE
/*
* RT-Thread Console Interface, used by rt_kprintf
*/
/**
* This function is used to display a string on console, normally, it's
* invoked by rt_kprintf
*
* @param str the displayed string
*/
void rt_hw_console_output(const char* str)
{
while (*str)
{
/* Transmit Character */
XUartLite_SendByte(STDOUT_BASEADDRESS, *str);
if (*str == '\n')
XUartLite_SendByte(STDOUT_BASEADDRESS, '\r');
str++;
}
}
static void rt_hw_console_init()
{
rt_uint32_t status;
/*
* Initialize the UartLite driver so that it is ready to use.
*/
status = XUartLite_Initialize(&uart_lite, RS232_DEVICE_ID);
if (status != XST_SUCCESS)
{
return;
}
}
#endif
void rt_hw_timer_handler(void)
{
rt_uint32_t csr;
csr = XTmrCtr_ReadReg(timer.BaseAddress, TIMER_CNTR_0, XTC_TCSR_OFFSET);
/*
* Check if timer expired and interrupt occured
*/
if (csr & XTC_CSR_INT_OCCURED_MASK)
{
rt_tick_increase();
XTmrCtr_WriteReg(timer.BaseAddress, TIMER_CNTR_0, XTC_TCSR_OFFSET, csr | XTC_CSR_INT_OCCURED_MASK);
}
}
/*
*********************************************************************************************************
* rt_intc_init()
*
* Description: This function intializes the interrupt controller by registering the appropriate handler
* functions and enabling interrupts.
*
* Arguments : None
*
* Returns : None
*********************************************************************************************************
*/
void rt_intc_init (void)
{
XStatus status;
XIntc_MasterDisable(XPAR_INTC_0_BASEADDR);
status = XIntc_Initialize(&int_ctl, XPAR_INTC_0_DEVICE_ID);
/* install interrupt handler */
rt_hw_interrupt_install(XPAR_INTC_0_TMRCTR_0_VEC_ID, (rt_isr_handler_t)rt_hw_timer_handler, RT_NULL);
rt_hw_interrupt_umask(XPAR_INTC_0_TMRCTR_0_VEC_ID);
XIntc_Start(&int_ctl, XIN_REAL_MODE);
}
void rt_tmr_init (void)
{
rt_uint32_t ctl;
XStatus status;
status = XTmrCtr_Initialize(&timer,XPAR_AXI_TIMER_0_DEVICE_ID);
XTmrCtr_WriteReg(timer.BaseAddress, TIMER_CNTR_0, XTC_TLR_OFFSET, PIV);
ctl = XTC_CSR_ENABLE_TMR_MASK | XTC_CSR_ENABLE_INT_MASK | XTC_CSR_AUTO_RELOAD_MASK | XTC_CSR_DOWN_COUNT_MASK;
XTmrCtr_WriteReg(timer.BaseAddress, TIMER_CNTR_0, XTC_TCSR_OFFSET, ctl);
}
/**
* This function will initial SPARTAN 6 LX9 board.
*/
void rt_hw_board_init()
{
microblaze_disable_icache();
microblaze_disable_dcache();
/* init hardware console */
rt_hw_console_init();
/* init led */
rt_hw_board_led_init();
/* init intc */
rt_intc_init();
/* timer init */
rt_tmr_init();
}
|
