666d12988a
1. Add ETH MAC driver using DMA for Tx and Rx lwip pBuf. 2. Modify the tivaware emac library to fix the bug that PHY read is not stable when sysclk is 120MHz 3. In PHY IRQ handler, insert a dummy reading (REG_BMSR) before read PHY_STS to force update STS register.
102 lines
2.8 KiB
C
102 lines
2.8 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) 2013 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://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-01-05 Bernard first implementation
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* 2014-07-18 ArdaFu Port to TM4C129X
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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 "drv_uart.h"
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#include "driverlib/interrupt.h"
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#include "driverlib/sysctl.h"
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#include "driverlib/systick.h"
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#include "driverlib/fpu.h"
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#include "driverlib/rom_map.h"
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#define SYS_CLOCK_DEFAULT 120000000
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uint32_t SysClock;
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#define FAULT_NMI 2 // NMI fault
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#define FAULT_HARD 3 // Hard fault
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#define FAULT_MPU 4 // MPU fault
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#define FAULT_BUS 5 // Bus fault
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#define FAULT_USAGE 6 // Usage fault
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#define FAULT_SVCALL 11 // SVCall
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#define FAULT_DEBUG 12 // Debug monitor
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#define FAULT_PENDSV 14 // PendSV
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#define FAULT_SYSTICK 15 // System Tick
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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 SysTick_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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}
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extern void PendSV_Handler(void);
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extern void HardFault_Handler(void);
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/**
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* This function will initial LPC40xx board.
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*/
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void rt_hw_board_init()
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{
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MAP_IntMasterDisable();
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IntRegister(FAULT_HARD, HardFault_Handler);
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IntRegister(FAULT_PENDSV, PendSV_Handler);
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IntRegister(FAULT_SYSTICK, SysTick_Handler);
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//
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// Enable lazy stacking for interrupt handlers. This allows floating-point
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// instructions to be used within interrupt handlers, but at the expense of
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// extra stack usage.
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//
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MAP_FPULazyStackingEnable();
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//
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// Set the clocking to run directly from the external crystal/oscillator.
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// TODO: The SYSCTL_XTAL_ value must be changed to match the value of the
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// crystal on your board.
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//
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SysClock = MAP_SysCtlClockFreqSet(
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(SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480),
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SYS_CLOCK_DEFAULT);
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MAP_SysTickDisable();
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MAP_SysTickPeriodSet(SysClock/ RT_TICK_PER_SECOND - 1);
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MAP_SysTickIntEnable();
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MAP_SysTickEnable();
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/* set pend exception priority */
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//IntPrioritySet(FAULT_PENDSV, (1 << 5) - 1);
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/*init uart device*/
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rt_hw_uart_init();
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//redirect RTT stdio to CONSOLE device
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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//
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// Enable interrupts to the processor.
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//
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MAP_IntMasterEnable();
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}
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