Browse Source
the only change this results in in the example binaries is in the hackrf-jellybean/systick example, where the the check in systick_set_clocksource for overflowing from the stm32 area gets used.pull/47/head
chrysn
12 years ago
14 changed files with 60 additions and 205 deletions
@ -1,88 +0,0 @@ |
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/*
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* This file is part of the libopencm3 project. |
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* |
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* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org> |
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* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com> |
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* |
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* This library is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#ifndef LIBOPENCM3_SYSTICK_H |
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#define LIBOPENCM3_SYSTICK_H |
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#include <libopencm3/lpc43xx/memorymap.h> |
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#include <libopencm3/cm3/memorymap.h> |
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#include <libopencm3/cm3/common.h> |
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/* --- SYSTICK registers --------------------------------------------------- */ |
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/* See also libopencm3\cm3\scs.h for details on SysTicks registers */ |
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/* Control and status register (STK_CTRL) */ |
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#define STK_CTRL MMIO32(SYS_TICK_BASE + 0x00) |
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/* reload value register (STK_LOAD) */ |
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#define STK_LOAD MMIO32(SYS_TICK_BASE + 0x04) |
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/* current value register (STK_VAL) */ |
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#define STK_VAL MMIO32(SYS_TICK_BASE + 0x08) |
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/* calibration value register (STK_CALIB) */ |
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#define STK_CALIB MMIO32(SYS_TICK_BASE + 0x0C) |
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/* --- STK_CTRL values ----------------------------------------------------- */ |
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/* Bits [31:17] Reserved, must be kept cleared. */ |
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/* COUNTFLAG: */ |
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#define STK_CTRL_COUNTFLAG (1 << 16) |
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/* Bits [15:3] Reserved, must be kept cleared. */ |
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/* CLKSOURCE: Clock source selection */ |
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#define STK_CTRL_CLKSOURCE (1 << 2) |
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/* TICKINT: SysTick exception request enable */ |
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#define STK_CTRL_TICKINT (1 << 1) |
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/* ENABLE: Counter enable */ |
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#define STK_CTRL_ENABLE (1 << 0) |
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/* --- STK_LOAD values ----------------------------------------------------- */ |
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/* Bits [31:24] Reserved, must be kept cleared. */ |
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/* RELOAD[23:0]: RELOAD value */ |
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/* --- STK_VAL values ------------------------------------------------------ */ |
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/* Bits [31:24] Reserved, must be kept cleared. */ |
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/* CURRENT[23:0]: Current counter value */ |
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/* --- STK_CALIB values ---------------------------------------------------- */ |
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/* NOREF: NOREF flag */ |
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#define STK_CALIB_NOREF (1 << 31) |
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/* SKEW: SKEW flag */ |
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#define STK_CALIB_SKEW (1 << 30) |
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/* Bits [29:24] Reserved, must be kept cleared. */ |
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/* TENMS[23:0]: Calibration value */ |
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/* --- Function Prototypes ------------------------------------------------- */ |
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BEGIN_DECLS |
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void systick_set_reload(u32 value); |
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u32 systick_get_value(void); |
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void systick_set_clocksource(u8 clocksource); |
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void systick_interrupt_enable(void); |
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void systick_interrupt_disable(void); |
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void systick_counter_enable(void); |
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void systick_counter_disable(void); |
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u8 systick_get_countflag(void); |
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u32 systick_get_calib(void); |
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END_DECLS |
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#endif |
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@ -1,69 +0,0 @@ |
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/*
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* This file is part of the libopencm3 project. |
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* |
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* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org> |
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* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com> |
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* |
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* This library is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#include <libopencm3/lpc43xx/systick.h> |
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void systick_set_reload(u32 value) |
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{ |
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STK_LOAD = (value & 0x00FFFFFF); |
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} |
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u32 systick_get_value(void) |
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{ |
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return STK_VAL; |
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} |
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void systick_set_clocksource(u8 clocksource) |
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{ |
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STK_CTRL |= clocksource; |
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} |
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void systick_interrupt_enable(void) |
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{ |
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STK_CTRL |= STK_CTRL_TICKINT; |
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} |
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void systick_interrupt_disable(void) |
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{ |
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STK_CTRL &= ~STK_CTRL_TICKINT; |
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} |
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void systick_counter_enable(void) |
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{ |
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STK_CTRL |= STK_CTRL_ENABLE; |
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} |
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void systick_counter_disable(void) |
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{ |
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STK_CTRL &= ~STK_CTRL_ENABLE; |
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} |
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u8 systick_get_countflag(void) |
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{ |
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if (STK_CTRL & STK_CTRL_COUNTFLAG) |
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return 1; |
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else |
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return 0; |
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} |
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u32 systick_get_calib(void) |
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{ |
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return (STK_CALIB&0x00FFFFFF); |
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} |
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