88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
|
/*
|
||
|
|
* File : board.c
|
||
|
|
* This file is part of RT-Thread RTOS
|
||
|
|
* COPYRIGHT (C) 2006-2011, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* The license and distribution terms for this file may be
|
||
|
|
* found in the file LICENSE in this distribution or at
|
||
|
|
* http://www.rt-thread.org/license/LICENSE
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2011-02-14 aozima first implementation for Nios II.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include <rthw.h>
|
||
|
|
#include <rtthread.h>
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include "system.h"
|
||
|
|
#include "sys/alt_irq.h"
|
||
|
|
#include "altera_avalon_timer_regs.h"
|
||
|
|
|
||
|
|
#include "uart.h"
|
||
|
|
|
||
|
|
extern int alt_irq_register (alt_u32 id,
|
||
|
|
void* context,
|
||
|
|
void (*alt_isr_func)(void* isr_context, alt_u32 id) );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @addtogroup NIOS_II
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*@{*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is the timer interrupt service routine.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void rt_hw_timer_handler(void * context,unsigned long id)
|
||
|
|
{
|
||
|
|
void* base = (void*)TIMER_BASE;
|
||
|
|
|
||
|
|
/* clear the interrupt */
|
||
|
|
IOWR_ALTERA_AVALON_TIMER_STATUS (base, 0);
|
||
|
|
|
||
|
|
/* enter interrupt */
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
rt_tick_increase();
|
||
|
|
|
||
|
|
/* leave interrupt */
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
|
||
|
|
void sysTick_config(void)
|
||
|
|
{
|
||
|
|
void* base = (void*)TIMER_BASE;
|
||
|
|
|
||
|
|
IOWR_ALTERA_AVALON_TIMER_CONTROL (base,
|
||
|
|
ALTERA_AVALON_TIMER_CONTROL_ITO_MSK |
|
||
|
|
ALTERA_AVALON_TIMER_CONTROL_CONT_MSK |
|
||
|
|
ALTERA_AVALON_TIMER_CONTROL_START_MSK);
|
||
|
|
|
||
|
|
alt_irq_register (TIMER_IRQ, NULL, rt_hw_timer_handler);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rt_hw_show_info(void)
|
||
|
|
{
|
||
|
|
rt_kprintf("\r\n\r\n---------- board info ----------\r\n");
|
||
|
|
rt_kprintf("ALT_DEVICE_FAMILY: %s\r\n",ALT_DEVICE_FAMILY);
|
||
|
|
rt_kprintf("ALT_CPU_ARCHITECTURE: %s\r\n",ALT_CPU_ARCHITECTURE);
|
||
|
|
rt_kprintf("ALT_CPU_CPU_FREQ: %u\r\n",ALT_CPU_CPU_FREQ);
|
||
|
|
rt_kprintf("memory size: at 0x%08X 0x%08X byte\r\n",SDRAM_BASE,SDRAM_SPAN);
|
||
|
|
}
|
||
|
|
|
||
|
|
void rt_hw_board_init(void)
|
||
|
|
{
|
||
|
|
rt_hw_uart_init();
|
||
|
|
rt_console_set_device("uart");
|
||
|
|
rt_hw_show_info();
|
||
|
|
|
||
|
|
sysTick_config();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*@}*/
|
||
|
|
|