From e7d600494579ef319b20221769c3b2fe12962243 Mon Sep 17 00:00:00 2001 From: bnewbold Date: Tue, 30 Mar 2010 20:52:45 -0400 Subject: Major hierarchy reorganization; see README. copy-to-ide and Makefile updated to conform; .gitignore added; LICENSE added --- libmaple/nvic.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 libmaple/nvic.c (limited to 'libmaple/nvic.c') diff --git a/libmaple/nvic.c b/libmaple/nvic.c new file mode 100644 index 0000000..9b8c84f --- /dev/null +++ b/libmaple/nvic.c @@ -0,0 +1,59 @@ +/* ***************************************************************************** + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * Created: 12/18/09 02:36:19 + * Copyright (c) 2009 Perry L. Hung. All rights reserved. + * + * ****************************************************************************/ + +/** + * @file nvic.c + * + * @brief Nested interrupt controller routines + */ + +#include "libmaple.h" +#include "nvic.h" +#include "systick.h" + +void nvic_disable_interrupts(void) { + /* Turn off all interrupts */ + REG_SET(NVIC_ICER0, 0xFFFFFFFF); + REG_SET(NVIC_ICER1, 0xFFFFFFFF); + + /* Turn off systick exception */ + REG_CLEAR_BIT(SYSTICK_CSR, 0); +} + + +void nvic_set_vector_table(uint32_t *addr, uint32_t offset) { +// SCB->VTOR = NVIC_VectTab | (Offset & (u32)0x1FFFFF80); +} + + +/** + * @brief turn on interrupt number n + * @param[in] n interrupt number + */ +void nvic_enable_interrupt(uint32 n) { + if (n >= NVIC_NR_INTERRUPTS) { + return; + } + + if (n < 32) { + REG_SET_BIT(NVIC_ISER0, n); + } else { + REG_SET_BIT(NVIC_ISER1, n - 32); + } +} -- cgit v1.2.3