libs/rt-thread
libs
/
rt-thread
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
rt-thread/bsp/lpc178x/drivers/lpc177x_8x_clkpwr.c

302 lines
9.5 KiB
C
Raw Blame History

/**********************************************************************
* $Id$ lpc177x_8x_clkpwr.c 2011-06-02
*//**
* @file lpc177x_8x_clkpwr.c
* @brief Contains all functions support for Clock and Power Control
* firmware library on LPC177x_8x
* @version 1.0
* @date 02. June. 2011
* @author NXP MCU SW Application Team
*
* Copyright(C) 2011, NXP Semiconductor
* All rights reserved.
*
***********************************************************************
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* products. This software is supplied "AS IS" without any warranties.
* NXP Semiconductors assumes no responsibility or liability for the
* use of the software, conveys no license or title under any patent,
* copyright, or mask work right to the product. NXP Semiconductors
* reserves the right to make changes in the software without
* notification. NXP Semiconductors also make no representation or
* warranty that such application will be suitable for the specified
* use without further testing or modification.
**********************************************************************/
/* Peripheral group ----------------------------------------------------------- */
/** @addtogroup CLKPWR
* @{
*/
/* Includes ------------------------------------------------------------------- */
#include "lpc177x_8x_clkpwr.h"
uint32_t USBFrequency = 0;
uint32_t SPIFIFrequency = 0;
/* Public Functions ----------------------------------------------------------- */
/** @addtogroup CLKPWR_Public_Functions
* @{
*/
/*********************************************************************//**
* @brief Set value of each Peripheral Clock Selection
* @param[in] ClkType clock type that will be divided, should be:
* - CLKPWR_CLKTYPE_CPU : CPU clock
* - CLKPWR_CLKTYPE_PER : Peripheral clock
* - CLKPWR_CLKTYPE_EMC : EMC clock
* - CLKPWR_CLKTYPE_USB : USB clock
* @param[in] DivVal Value of divider. This value should be set as follows:
* - CPU clock: DivVal must be in range: 0..31
* - Peripheral clock: DivVal must be in range: 0..31
* - EMC clock: DivVal must be:
* + 0: The EMC uses the same clock as the CPU
* + 1: The EMC uses a clock at half the rate of the CPU
* - USB clock: DivVal must be:
* + 0: the divider is turned off, no clock will
* be provided to the USB subsystem
* + 4: PLL0 output is divided by 4. PLL0 output must be 192MHz
* + 6: PLL0 output is divided by 6. PLL0 output must be 288MHz
* @return none
* Note: Pls assign right DivVal, this function will not check if it is illegal.
**********************************************************************/
void CLKPWR_SetCLKDiv (uint8_t ClkType, uint8_t DivVal)
{
switch(ClkType)
{
case CLKPWR_CLKTYPE_CPU:
LPC_SC->CCLKSEL = DivVal;
SystemCoreClockUpdate(); //Update clock
break;
case CLKPWR_CLKTYPE_PER:
LPC_SC->PCLKSEL = DivVal;
SystemCoreClockUpdate(); //Update clock
break;
case CLKPWR_CLKTYPE_EMC:
LPC_SC->EMCCLKSEL = DivVal;
SystemCoreClockUpdate(); //Update clock
break;
case CLKPWR_CLKTYPE_USB:
LPC_SC->USBCLKSEL &= ~(0x0000001F);
LPC_SC->USBCLKSEL |= DivVal;
break;
default:
while(1);//Error Loop;
}
}
/*********************************************************************//**
* @brief Get current clock value
* @param[in] ClkType clock type that will be divided, should be:
* - CLKPWR_CLKTYPE_CPU : CPU clock
* - CLKPWR_CLKTYPE_PER : Peripheral clock
* - CLKPWR_CLKTYPE_EMC : EMC clock
* - CLKPWR_CLKTYPE_USB : USB clock
**********************************************************************/
uint32_t CLKPWR_GetCLK (uint8_t ClkType)
{
switch(ClkType)
{
case CLKPWR_CLKTYPE_CPU:
return SystemCoreClock;
case CLKPWR_CLKTYPE_PER:
return PeripheralClock;
case CLKPWR_CLKTYPE_EMC:
return EMCClock;
case CLKPWR_CLKTYPE_USB:
return USBClock;
default:
while(1);//error loop
}
}
/*********************************************************************//**
* @brief Configure power supply for each peripheral according to NewState
* @param[in] PPType Type of peripheral used to enable power,
* should be one of the following:
* - CLKPWR_PCONP_PCLCD : LCD
* - CLKPWR_PCONP_PCTIM0 : Timer 0
- CLKPWR_PCONP_PCTIM1 : Timer 1
- CLKPWR_PCONP_PCUART0 : UART 0
- CLKPWR_PCONP_PCUART1 : UART 1
- CLKPWR_PCONP_PCPWM0 : PWM 0
- CLKPWR_PCONP_PCPWM1 : PWM 1
- CLKPWR_PCONP_PCI2C0 : I2C 0
- CLKPWR_PCONP_PCUART4 : UART4
- CLKPWR_PCONP_PCRTC : RTC
- CLKPWR_PCONP_PCSSP1 : SSP 1
- CLKPWR_PCONP_PCEMC : EMC
- CLKPWR_PCONP_PCADC : ADC
- CLKPWR_PCONP_PCAN1 : CAN 1
- CLKPWR_PCONP_PCAN2 : CAN 2
- CLKPWR_PCONP_PCGPIO : GPIO
- CLKPWR_PCONP_PCMC : MCPWM
- CLKPWR_PCONP_PCQEI : QEI
- CLKPWR_PCONP_PCI2C1 : I2C 1
- CLKPWR_PCONP_PCSSP2 : SSP 2
- CLKPWR_PCONP_PCSSP0 : SSP 0
- CLKPWR_PCONP_PCTIM2 : Timer 2
- CLKPWR_PCONP_PCTIM3 : Timer 3
- CLKPWR_PCONP_PCUART2 : UART 2
- CLKPWR_PCONP_PCUART3 : UART 3
- CLKPWR_PCONP_PCI2C2 : I2C 2
- CLKPWR_PCONP_PCI2S : I2S
- CLKPWR_PCONP_PCSDC : SDC
- CLKPWR_PCONP_PCGPDMA : GPDMA
- CLKPWR_PCONP_PCENET : Ethernet
- CLKPWR_PCONP_PCUSB : USB
*
* @param[in] NewState New state of Peripheral Power, should be:
* - ENABLE : Enable power for this peripheral
* - DISABLE : Disable power for this peripheral
*
* @return none
**********************************************************************/
void CLKPWR_ConfigPPWR (uint32_t PPType, FunctionalState NewState)
{
if (NewState == ENABLE)
{
LPC_SC->PCONP |= PPType;
}
else if (NewState == DISABLE)
{
LPC_SC->PCONP &= ~PPType;
}
}
#if 0
// nxp21346
/*********************************************************************//**
* @brief Configure hardware reset for each peripheral according to NewState
* @param[in] PPType Type of peripheral used to enable power,
* should be one of the following:
* - CLKPWR_RSTCON0_LCD : LCD
* - CLKPWR_RSTCON0_TIM0 : Timer 0
- CLKPWR_RSTCON0_TIM1 : Timer 1
- CLKPWR_RSTCON0_UART0 : UART 0
- CLKPWR_RSTCON0_UART1 : UART 1
- CLKPWR_RSTCON0_PWM0 : PWM 0
- CLKPWR_RSTCON0_PWM1 : PWM 1
- CLKPWR_RSTCON0_I2C0 : I2C 0
- CLKPWR_RSTCON0_UART4 : UART 4
- CLKPWR_RSTCON0_RTC : RTC
- CLKPWR_RSTCON0_SSP1 : SSP 1
- CLKPWR_RSTCON0_EMC : EMC
- CLKPWR_RSTCON0_ADC : ADC
- CLKPWR_RSTCON0_CAN1 : CAN 1
- CLKPWR_RSTCON0_CAN2 : CAN 2
- CLKPWR_RSTCON0_GPIO : GPIO
- CLKPWR_RSTCON0_MCPWM : MCPWM
- CLKPWR_RSTCON0_QEI : QEI
- CLKPWR_RSTCON0_I2C1 : I2C 1
- CLKPWR_RSTCON0_SSP2 : SSP 2
- CLKPWR_RSTCON0_SSP0 : SSP 0
- CLKPWR_RSTCON0_TIM2 : Timer 2
- CLKPWR_RSTCON0_TIM3 : Timer 3
- CLKPWR_RSTCON0_UART2 : UART 2
- CLKPWR_RSTCON0_UART3 : UART 3
- CLKPWR_RSTCON0_I2C2 : I2C 2
- CLKPWR_RSTCON0_I2S : I2S
- CLKPWR_RSTCON0_SDC : SDC
- CLKPWR_RSTCON0_GPDMA : GPDMA
- CLKPWR_RSTCON0_ENET : Ethernet
- CLKPWR_RSTCON0_USB : USB
*
* @param[in] NewState New state of Peripheral Power, should be:
* - ENABLE : Enable power for this peripheral
* - DISABLE : Disable power for this peripheral
*
* @return none
**********************************************************************/
void CLKPWR_ConfigReset(uint8_t PType, FunctionalState NewState)
{
if(PType < 32)
{
if(NewState == ENABLE)
LPC_SC->RSTCON0 |=(1<<PType);
else
LPC_SC->RSTCON0 &=~(1<<PType);
}
else
{
if(NewState == ENABLE)
LPC_SC->RSTCON1 |= (1<<(PType - 31));
else
LPC_SC->RSTCON1 &= ~(1<<(PType - 31));
}
}
// nxp21346
#endif
/*********************************************************************//**
* @brief Enter Sleep mode with co-operated instruction by the Cortex-M3.
* @param[in] None
* @return None
**********************************************************************/
void CLKPWR_Sleep(void)
{
LPC_SC->PCON = 0x00;
/* Sleep Mode*/
__WFI();
}
/*********************************************************************//**
* @brief Enter Deep Sleep mode with co-operated instruction by the Cortex-M3.
* @param[in] None
* @return None
**********************************************************************/
void CLKPWR_DeepSleep(void)
{
/* Deep-Sleep Mode, set SLEEPDEEP bit */
SCB->SCR = 0x4;
LPC_SC->PCON = 0x8;
/* Deep Sleep Mode*/
__WFI();
}
/*********************************************************************//**
* @brief Enter Power Down mode with co-operated instruction by the Cortex-M3.
* @param[in] None
* @return None
**********************************************************************/
void CLKPWR_PowerDown(void)
{
/* Deep-Sleep Mode, set SLEEPDEEP bit */
SCB->SCR = 0x4;
LPC_SC->PCON = 0x09;
/* Power Down Mode*/
__WFI();
}
/*********************************************************************//**
* @brief Enter Deep Power Down mode with co-operated instruction by the Cortex-M3.
* @param[in] None
* @return None
**********************************************************************/
void CLKPWR_DeepPowerDown(void)
{
/* Deep-Sleep Mode, set SLEEPDEEP bit */
SCB->SCR = 0x4;
LPC_SC->PCON = 0x03;
/* Deep Power Down Mode*/
__WFI();
}
/**
* @}
*/
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */
View Git Blame Copy Permalink