/* * Copyright (c) 2006-2018, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2009-01-05 Bernard first implementation */ #include #include #include "board.h" #include "drv_uart.h" #ifdef LPC_EXT_SDRAM #include "drv_sdram.h" #endif /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave(); } /** * This function will initial LPC40xx board. */ void rt_hw_board_init() { /* NVIC Configuration */ #define NVIC_VTOR_MASK 0x3FFFFF80 #ifdef VECT_TAB_RAM /* Set the Vector Table base location at 0x10000000 */ SCB->VTOR = (0x10000000 & NVIC_VTOR_MASK); #else /* VECT_TAB_FLASH */ /* Set the Vector Table base location at 0x00000000 */ SCB->VTOR = (0x00000000 & NVIC_VTOR_MASK); #endif /* init systick */ SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND - 1); /* set pend exception priority */ NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1); /*init uart device*/ rt_hw_uart_init(); rt_console_set_device(RT_CONSOLE_DEVICE_NAME); #ifdef LPC_EXT_SDRAM rt_kprintf("Initialize SDRAM ..."); lpc_sdram_hw_init(); rt_kprintf("done!\n"); #endif // rt_components_board_init(); }