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351 lines
11 KiB
C
351 lines
11 KiB
C
8 years ago
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/**********************************************************************
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* $Id$ lpc17xx_clkpwr.c 2010-06-18
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*//**
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* @file lpc17xx_clkpwr.c
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* @brief Contains all functions support for Clock and Power Control
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* firmware library on LPC17xx
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* @version 3.0
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* @date 18. June. 2010
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2010, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors'
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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**********************************************************************/
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/* Peripheral group ----------------------------------------------------------- */
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/** @addtogroup CLKPWR
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* @{
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*/
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/* Includes ------------------------------------------------------------------- */
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#include "lpc17xx_clkpwr.h"
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/* Public Functions ----------------------------------------------------------- */
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/** @addtogroup CLKPWR_Public_Functions
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* @{
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*/
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/*********************************************************************//**
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* @brief Set value of each Peripheral Clock Selection
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* @param[in] ClkType Peripheral Clock Selection of each type,
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* should be one of the following:
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* - CLKPWR_PCLKSEL_WDT : WDT
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- CLKPWR_PCLKSEL_TIMER0 : Timer 0
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- CLKPWR_PCLKSEL_TIMER1 : Timer 1
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- CLKPWR_PCLKSEL_UART0 : UART 0
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- CLKPWR_PCLKSEL_UART1 : UART 1
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- CLKPWR_PCLKSEL_PWM1 : PWM 1
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- CLKPWR_PCLKSEL_I2C0 : I2C 0
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- CLKPWR_PCLKSEL_SPI : SPI
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- CLKPWR_PCLKSEL_SSP1 : SSP 1
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- CLKPWR_PCLKSEL_DAC : DAC
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- CLKPWR_PCLKSEL_ADC : ADC
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- CLKPWR_PCLKSEL_CAN1 : CAN 1
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- CLKPWR_PCLKSEL_CAN2 : CAN 2
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- CLKPWR_PCLKSEL_ACF : ACF
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- CLKPWR_PCLKSEL_QEI : QEI
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- CLKPWR_PCLKSEL_PCB : PCB
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- CLKPWR_PCLKSEL_I2C1 : I2C 1
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- CLKPWR_PCLKSEL_SSP0 : SSP 0
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- CLKPWR_PCLKSEL_TIMER2 : Timer 2
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- CLKPWR_PCLKSEL_TIMER3 : Timer 3
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- CLKPWR_PCLKSEL_UART2 : UART 2
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- CLKPWR_PCLKSEL_UART3 : UART 3
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- CLKPWR_PCLKSEL_I2C2 : I2C 2
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- CLKPWR_PCLKSEL_I2S : I2S
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- CLKPWR_PCLKSEL_RIT : RIT
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- CLKPWR_PCLKSEL_SYSCON : SYSCON
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- CLKPWR_PCLKSEL_MC : MC
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* @param[in] DivVal Value of divider, should be:
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* - CLKPWR_PCLKSEL_CCLK_DIV_4 : PCLK_peripheral = CCLK/4
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* - CLKPWR_PCLKSEL_CCLK_DIV_1 : PCLK_peripheral = CCLK/1
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* - CLKPWR_PCLKSEL_CCLK_DIV_2 : PCLK_peripheral = CCLK/2
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*
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* @return none
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**********************************************************************/
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void CLKPWR_SetPCLKDiv (uint32_t ClkType, uint32_t DivVal)
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{
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uint32_t bitpos;
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bitpos = (ClkType < 32) ? (ClkType) : (ClkType - 32);
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/* PCLKSEL0 selected */
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if (ClkType < 32)
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{
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/* Clear two bit at bit position */
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LPC_SC->PCLKSEL0 &= (~(CLKPWR_PCLKSEL_BITMASK(bitpos)));
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/* Set two selected bit */
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LPC_SC->PCLKSEL0 |= (CLKPWR_PCLKSEL_SET(bitpos, DivVal));
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}
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/* PCLKSEL1 selected */
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else
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{
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/* Clear two bit at bit position */
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LPC_SC->PCLKSEL1 &= ~(CLKPWR_PCLKSEL_BITMASK(bitpos));
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/* Set two selected bit */
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LPC_SC->PCLKSEL1 |= (CLKPWR_PCLKSEL_SET(bitpos, DivVal));
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}
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}
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/*********************************************************************//**
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* @brief Get current value of each Peripheral Clock Selection
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* @param[in] ClkType Peripheral Clock Selection of each type,
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* should be one of the following:
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* - CLKPWR_PCLKSEL_WDT : WDT
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- CLKPWR_PCLKSEL_TIMER0 : Timer 0
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- CLKPWR_PCLKSEL_TIMER1 : Timer 1
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- CLKPWR_PCLKSEL_UART0 : UART 0
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- CLKPWR_PCLKSEL_UART1 : UART 1
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- CLKPWR_PCLKSEL_PWM1 : PWM 1
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- CLKPWR_PCLKSEL_I2C0 : I2C 0
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- CLKPWR_PCLKSEL_SPI : SPI
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- CLKPWR_PCLKSEL_SSP1 : SSP 1
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- CLKPWR_PCLKSEL_DAC : DAC
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- CLKPWR_PCLKSEL_ADC : ADC
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- CLKPWR_PCLKSEL_CAN1 : CAN 1
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- CLKPWR_PCLKSEL_CAN2 : CAN 2
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- CLKPWR_PCLKSEL_ACF : ACF
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- CLKPWR_PCLKSEL_QEI : QEI
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- CLKPWR_PCLKSEL_PCB : PCB
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- CLKPWR_PCLKSEL_I2C1 : I2C 1
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- CLKPWR_PCLKSEL_SSP0 : SSP 0
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- CLKPWR_PCLKSEL_TIMER2 : Timer 2
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- CLKPWR_PCLKSEL_TIMER3 : Timer 3
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- CLKPWR_PCLKSEL_UART2 : UART 2
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- CLKPWR_PCLKSEL_UART3 : UART 3
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- CLKPWR_PCLKSEL_I2C2 : I2C 2
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- CLKPWR_PCLKSEL_I2S : I2S
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- CLKPWR_PCLKSEL_RIT : RIT
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- CLKPWR_PCLKSEL_SYSCON : SYSCON
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- CLKPWR_PCLKSEL_MC : MC
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* @return Value of Selected Peripheral Clock Selection
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**********************************************************************/
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uint32_t CLKPWR_GetPCLKSEL (uint32_t ClkType)
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{
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uint32_t bitpos, retval;
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if (ClkType < 32)
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{
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bitpos = ClkType;
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retval = LPC_SC->PCLKSEL0;
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}
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else
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{
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bitpos = ClkType - 32;
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retval = LPC_SC->PCLKSEL1;
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}
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retval = CLKPWR_PCLKSEL_GET(bitpos, retval);
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return retval;
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}
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/*********************************************************************//**
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* @brief Get current value of each Peripheral Clock
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* @param[in] ClkType Peripheral Clock Selection of each type,
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* should be one of the following:
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* - CLKPWR_PCLKSEL_WDT : WDT
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- CLKPWR_PCLKSEL_TIMER0 : Timer 0
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- CLKPWR_PCLKSEL_TIMER1 : Timer 1
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- CLKPWR_PCLKSEL_UART0 : UART 0
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- CLKPWR_PCLKSEL_UART1 : UART 1
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- CLKPWR_PCLKSEL_PWM1 : PWM 1
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- CLKPWR_PCLKSEL_I2C0 : I2C 0
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- CLKPWR_PCLKSEL_SPI : SPI
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- CLKPWR_PCLKSEL_SSP1 : SSP 1
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- CLKPWR_PCLKSEL_DAC : DAC
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- CLKPWR_PCLKSEL_ADC : ADC
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- CLKPWR_PCLKSEL_CAN1 : CAN 1
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- CLKPWR_PCLKSEL_CAN2 : CAN 2
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- CLKPWR_PCLKSEL_ACF : ACF
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- CLKPWR_PCLKSEL_QEI : QEI
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- CLKPWR_PCLKSEL_PCB : PCB
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- CLKPWR_PCLKSEL_I2C1 : I2C 1
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- CLKPWR_PCLKSEL_SSP0 : SSP 0
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- CLKPWR_PCLKSEL_TIMER2 : Timer 2
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- CLKPWR_PCLKSEL_TIMER3 : Timer 3
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- CLKPWR_PCLKSEL_UART2 : UART 2
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- CLKPWR_PCLKSEL_UART3 : UART 3
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- CLKPWR_PCLKSEL_I2C2 : I2C 2
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- CLKPWR_PCLKSEL_I2S : I2S
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- CLKPWR_PCLKSEL_RIT : RIT
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- CLKPWR_PCLKSEL_SYSCON : SYSCON
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- CLKPWR_PCLKSEL_MC : MC
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* @return Value of Selected Peripheral Clock
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**********************************************************************/
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uint32_t CLKPWR_GetPCLK (uint32_t ClkType)
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{
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uint32_t retval, div;
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retval = SystemCoreClock;
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div = CLKPWR_GetPCLKSEL(ClkType);
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switch (div)
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{
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case 0:
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div = 4;
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break;
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case 1:
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div = 1;
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break;
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case 2:
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div = 2;
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break;
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case 3:
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div = 8;
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break;
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}
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retval /= div;
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return retval;
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}
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/*********************************************************************//**
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* @brief Configure power supply for each peripheral according to NewState
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* @param[in] PPType Type of peripheral used to enable power,
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* should be one of the following:
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* - CLKPWR_PCONP_PCTIM0 : Timer 0
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- CLKPWR_PCONP_PCTIM1 : Timer 1
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- CLKPWR_PCONP_PCUART0 : UART 0
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- CLKPWR_PCONP_PCUART1 : UART 1
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- CLKPWR_PCONP_PCPWM1 : PWM 1
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- CLKPWR_PCONP_PCI2C0 : I2C 0
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- CLKPWR_PCONP_PCSPI : SPI
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- CLKPWR_PCONP_PCRTC : RTC
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- CLKPWR_PCONP_PCSSP1 : SSP 1
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- CLKPWR_PCONP_PCAD : ADC
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- CLKPWR_PCONP_PCAN1 : CAN 1
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- CLKPWR_PCONP_PCAN2 : CAN 2
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- CLKPWR_PCONP_PCGPIO : GPIO
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- CLKPWR_PCONP_PCRIT : RIT
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- CLKPWR_PCONP_PCMC : MC
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- CLKPWR_PCONP_PCQEI : QEI
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- CLKPWR_PCONP_PCI2C1 : I2C 1
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- CLKPWR_PCONP_PCSSP0 : SSP 0
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- CLKPWR_PCONP_PCTIM2 : Timer 2
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- CLKPWR_PCONP_PCTIM3 : Timer 3
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- CLKPWR_PCONP_PCUART2 : UART 2
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- CLKPWR_PCONP_PCUART3 : UART 3
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- CLKPWR_PCONP_PCI2C2 : I2C 2
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- CLKPWR_PCONP_PCI2S : I2S
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- CLKPWR_PCONP_PCGPDMA : GPDMA
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- CLKPWR_PCONP_PCENET : Ethernet
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- CLKPWR_PCONP_PCUSB : USB
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*
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* @param[in] NewState New state of Peripheral Power, should be:
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* - ENABLE : Enable power for this peripheral
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* - DISABLE : Disable power for this peripheral
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*
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* @return none
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**********************************************************************/
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void CLKPWR_ConfigPPWR (uint32_t PPType, FunctionalState NewState)
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{
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if (NewState == ENABLE)
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{
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LPC_SC->PCONP |= PPType & CLKPWR_PCONP_BITMASK;
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}
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else if (NewState == DISABLE)
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{
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LPC_SC->PCONP &= (~PPType) & CLKPWR_PCONP_BITMASK;
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}
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}
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/*********************************************************************//**
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* @brief Enter Sleep mode with co-operated instruction by the Cortex-M3.
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* @param[in] None
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* @return None
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**********************************************************************/
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void CLKPWR_Sleep(void)
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{
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LPC_SC->PCON = 0x00;
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/* Sleep Mode*/
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__WFI();
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}
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/*********************************************************************//**
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* @brief Enter Deep Sleep mode with co-operated instruction by the Cortex-M3.
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* @param[in] None
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* @return None
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**********************************************************************/
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void CLKPWR_DeepSleep(void)
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{
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/* Deep-Sleep Mode, set SLEEPDEEP bit */
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SCB->SCR = 0x4;
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LPC_SC->PCON = 0x00;
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/* Deep Sleep Mode*/
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__WFI();
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}
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/*********************************************************************//**
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* @brief Enter Power Down mode with co-operated instruction by the Cortex-M3.
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* @param[in] None
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* @return None
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**********************************************************************/
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void CLKPWR_PowerDown(void)
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{
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/* Deep-Sleep Mode, set SLEEPDEEP bit */
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SCB->SCR = 0x4;
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LPC_SC->PCON = 0x01;
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/* Power Down Mode*/
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__WFI();
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}
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/*********************************************************************//**
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* @brief Enter Deep Power Down mode with co-operated instruction by the Cortex-M3.
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* @param[in] None
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* @return None
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**********************************************************************/
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void CLKPWR_DeepPowerDown(void)
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{
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/* Deep-Sleep Mode, set SLEEPDEEP bit */
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SCB->SCR = 0x4;
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LPC_SC->PCON = 0x03;
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/* Deep Power Down Mode*/
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__WFI();
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/* --------------------------------- End Of File ------------------------------ */
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