forked from springcute/rt-thread
141 lines
2.9 KiB
C
141 lines
2.9 KiB
C
/*
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* File : board.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009 RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-05-16 Bernard first implementation
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <board.h>
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#include <inc/hw_types.h>
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#include <inc/hw_memmap.h>
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#include <inc/hw_uart.h>
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#include <driverlib/uart.h>
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#include <driverlib/gpio.h>
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#include <driverlib/sysctl.h>
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#include <driverlib/systick.h>
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#include <driverlib/interrupt.h>
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static void rt_hw_console_init(void);
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/**
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* @addtogroup LM3S
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*/
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/*@{*/
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extern void rt_hw_interrupt_thread_switch(void);
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void rt_hw_timer_handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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rt_hw_interrupt_thread_switch();
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}
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/**
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* This is the ethernet interrupt service routine.
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*
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*/
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void rt_hw_eth_handler(void)
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{
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#ifdef RT_USING_LWIP
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extern void luminaryif_isr(void);
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/* enter interrupt */
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rt_interrupt_enter();
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/* luminary ethernet interface */
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luminaryif_isr();
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/* leave interrupt */
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rt_interrupt_leave();
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#endif
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}
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/**
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* This function will initial LM3S board.
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*/
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void rt_hw_board_init()
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{
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// set sysclock to 80M
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SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
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/* init systick */
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SysTickDisable();
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SysTickPeriodSet(SysCtlClockGet()/RT_TICK_PER_SECOND);
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SysTickIntEnable();
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SysTickEnable();
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/* enable ssio */
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//SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
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#if LM3S_EXT_SRAM == 1
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/* init SDRAM */
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rt_hw_sdram_init();
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#endif
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/* init console */
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rt_hw_console_init();
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/* enable interrupt */
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IntMasterEnable();
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}
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/* init console to support rt_kprintf */
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static void rt_hw_console_init()
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{
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/* Enable the UART0 peripherals */
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SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
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SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
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/* Set GPIO A0 and A1 as UART pins. */
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GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
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/* Configure the UART for 115,200, 8-N-1 operation. */
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UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 115200,
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(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
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UART_CONFIG_PAR_NONE));
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}
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/* write one character to serial, must not trigger interrupt */
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static void rt_hw_console_putc(const char c)
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{
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if (c == '\n')
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while(UARTCharPutNonBlocking(UART0_BASE, '\r') == false);
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while(UARTCharPutNonBlocking(UART0_BASE, c) == false);
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}
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/**
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* This function is used by rt_kprintf to display a string on console.
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*
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* @param str the displayed string
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*/
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void rt_hw_console_output(const char* str)
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{
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while (*str)
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{
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rt_hw_console_putc (*str++);
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}
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}
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/*@}*/
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