91 lines
3.4 KiB
C
Executable File
91 lines
3.4 KiB
C
Executable File
/************************************************************************
|
|
* arch/arm/src/lpc31xx/lpc31_softreset.c
|
|
*
|
|
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* References:
|
|
* - UM10314 LPC3130/31 User manual Rev. 1.01 — 9 September 2009
|
|
* - lpc313x.cdl.drivers.zip example driver code
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Included Files
|
|
************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <stdint.h>
|
|
|
|
#include "up_arch.h"
|
|
#include "lpc31_cgudrvr.h"
|
|
|
|
/************************************************************************
|
|
* Pre-processor Definitions
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Private Data
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Private Functions
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Public Functions
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Name: lpc31_softreset
|
|
*
|
|
* Description:
|
|
* Perform a soft reset on the specified module.
|
|
*
|
|
************************************************************************/
|
|
|
|
void lpc31_softreset(enum lpc31_resetid_e resetid)
|
|
{
|
|
uint32_t address = LPC31_CGU_SOFTRST(resetid);
|
|
volatile int i;
|
|
|
|
/* Clear and set the register */
|
|
|
|
putreg32(0, address);
|
|
|
|
/* Delay a bit */
|
|
|
|
for (i = 0;i < 1000; i++);
|
|
|
|
/* Then set the the soft reset bit */
|
|
|
|
putreg32(CGU_SOFTRESET, address);
|
|
}
|