/** * @file : lpc17xx_clkpwr.c * @brief : Contains all functions support for Clock and Power Control * firmware library on LPC17xx * @version : 1.0 * @date : 18. Mar. 2009 * @author : HieuNguyen ************************************************************************** * 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 "lpc17xx_clkpwr.h" /* Public Functions ----------------------------------------------------------- */ /** @addtogroup CLKPWR_Public_Functions * @{ */ /*********************************************************************//** * @brief Set value of each Peripheral Clock Selection * @param[in] ClkType Peripheral Clock Selection of each type, * should be one of the following: * - CLKPWR_PCLKSEL_WDT : WDT - CLKPWR_PCLKSEL_TIMER0 : Timer 0 - CLKPWR_PCLKSEL_TIMER1 : Timer 1 - CLKPWR_PCLKSEL_UART0 : UART 0 - CLKPWR_PCLKSEL_UART1 : UART 1 - CLKPWR_PCLKSEL_PWM1 : PWM 1 - CLKPWR_PCLKSEL_I2C0 : I2C 0 - CLKPWR_PCLKSEL_SPI : SPI - CLKPWR_PCLKSEL_SSP1 : SSP 1 - CLKPWR_PCLKSEL_DAC : DAC - CLKPWR_PCLKSEL_ADC : ADC - CLKPWR_PCLKSEL_CAN1 : CAN 1 - CLKPWR_PCLKSEL_CAN2 : CAN 2 - CLKPWR_PCLKSEL_ACF : ACF - CLKPWR_PCLKSEL_QEI : QEI - CLKPWR_PCLKSEL_PCB : PCB - CLKPWR_PCLKSEL_I2C1 : I2C 1 - CLKPWR_PCLKSEL_SSP0 : SSP 0 - CLKPWR_PCLKSEL_TIMER2 : Timer 2 - CLKPWR_PCLKSEL_TIMER3 : Timer 3 - CLKPWR_PCLKSEL_UART2 : UART 2 - CLKPWR_PCLKSEL_UART3 : UART 3 - CLKPWR_PCLKSEL_I2C2 : I2C 2 - CLKPWR_PCLKSEL_I2S : I2S - CLKPWR_PCLKSEL_RIT : RIT - CLKPWR_PCLKSEL_SYSCON : SYSCON - CLKPWR_PCLKSEL_MC : MC * @param[in] DivVal Value of divider, should be: * - CLKPWR_PCLKSEL_CCLK_DIV_4 : PCLK_peripheral = CCLK/4 * - CLKPWR_PCLKSEL_CCLK_DIV_1 : PCLK_peripheral = CCLK/1 * - CLKPWR_PCLKSEL_CCLK_DIV_2 : PCLK_peripheral = CCLK/2 * * @return none **********************************************************************/ void CLKPWR_SetPCLKDiv (uint32_t ClkType, uint32_t DivVal) { uint32_t bitpos; bitpos = (ClkType < 32) ? (ClkType) : (ClkType - 32); /* PCLKSEL0 selected */ if (ClkType < 32) { /* Clear two bit at bit position */ LPC_SC->PCLKSEL0 &= (~(CLKPWR_PCLKSEL_BITMASK(bitpos))); /* Set two selected bit */ LPC_SC->PCLKSEL0 |= (CLKPWR_PCLKSEL_SET(bitpos, DivVal)); } /* PCLKSEL1 selected */ else { /* Clear two bit at bit position */ LPC_SC->PCLKSEL1 &= ~(CLKPWR_PCLKSEL_BITMASK(bitpos)); /* Set two selected bit */ LPC_SC->PCLKSEL1 |= (CLKPWR_PCLKSEL_SET(bitpos, DivVal)); } } /*********************************************************************//** * @brief Get current value of each Peripheral Clock Selection * @param[in] ClkType Peripheral Clock Selection of each type, * should be one of the following: * - CLKPWR_PCLKSEL_WDT : WDT - CLKPWR_PCLKSEL_TIMER0 : Timer 0 - CLKPWR_PCLKSEL_TIMER1 : Timer 1 - CLKPWR_PCLKSEL_UART0 : UART 0 - CLKPWR_PCLKSEL_UART1 : UART 1 - CLKPWR_PCLKSEL_PWM1 : PWM 1 - CLKPWR_PCLKSEL_I2C0 : I2C 0 - CLKPWR_PCLKSEL_SPI : SPI - CLKPWR_PCLKSEL_SSP1 : SSP 1 - CLKPWR_PCLKSEL_DAC : DAC - CLKPWR_PCLKSEL_ADC : ADC - CLKPWR_PCLKSEL_CAN1 : CAN 1 - CLKPWR_PCLKSEL_CAN2 : CAN 2 - CLKPWR_PCLKSEL_ACF : ACF - CLKPWR_PCLKSEL_QEI : QEI - CLKPWR_PCLKSEL_PCB : PCB - CLKPWR_PCLKSEL_I2C1 : I2C 1 - CLKPWR_PCLKSEL_SSP0 : SSP 0 - CLKPWR_PCLKSEL_TIMER2 : Timer 2 - CLKPWR_PCLKSEL_TIMER3 : Timer 3 - CLKPWR_PCLKSEL_UART2 : UART 2 - CLKPWR_PCLKSEL_UART3 : UART 3 - CLKPWR_PCLKSEL_I2C2 : I2C 2 - CLKPWR_PCLKSEL_I2S : I2S - CLKPWR_PCLKSEL_RIT : RIT - CLKPWR_PCLKSEL_SYSCON : SYSCON - CLKPWR_PCLKSEL_MC : MC * @return Value of Selected Peripheral Clock Selection **********************************************************************/ uint32_t CLKPWR_GetPCLKSEL (uint32_t ClkType) { uint32_t bitpos, retval; if (ClkType < 32) { bitpos = ClkType; retval = LPC_SC->PCLKSEL0; } else { bitpos = ClkType - 32; retval = LPC_SC->PCLKSEL1; } retval = CLKPWR_PCLKSEL_GET(bitpos, retval); return retval; } /*********************************************************************//** * @brief Get current value of each Peripheral Clock * @param[in] ClkType Peripheral Clock Selection of each type, * should be one of the following: * - CLKPWR_PCLKSEL_WDT : WDT - CLKPWR_PCLKSEL_TIMER0 : Timer 0 - CLKPWR_PCLKSEL_TIMER1 : Timer 1 - CLKPWR_PCLKSEL_UART0 : UART 0 - CLKPWR_PCLKSEL_UART1 : UART 1 - CLKPWR_PCLKSEL_PWM1 : PWM 1 - CLKPWR_PCLKSEL_I2C0 : I2C 0 - CLKPWR_PCLKSEL_SPI : SPI - CLKPWR_PCLKSEL_SSP1 : SSP 1 - CLKPWR_PCLKSEL_DAC : DAC - CLKPWR_PCLKSEL_ADC : ADC - CLKPWR_PCLKSEL_CAN1 : CAN 1 - CLKPWR_PCLKSEL_CAN2 : CAN 2 - CLKPWR_PCLKSEL_ACF : ACF - CLKPWR_PCLKSEL_QEI : QEI - CLKPWR_PCLKSEL_PCB : PCB - CLKPWR_PCLKSEL_I2C1 : I2C 1 - CLKPWR_PCLKSEL_SSP0 : SSP 0 - CLKPWR_PCLKSEL_TIMER2 : Timer 2 - CLKPWR_PCLKSEL_TIMER3 : Timer 3 - CLKPWR_PCLKSEL_UART2 : UART 2 - CLKPWR_PCLKSEL_UART3 : UART 3 - CLKPWR_PCLKSEL_I2C2 : I2C 2 - CLKPWR_PCLKSEL_I2S : I2S - CLKPWR_PCLKSEL_RIT : RIT - CLKPWR_PCLKSEL_SYSCON : SYSCON - CLKPWR_PCLKSEL_MC : MC * @return Value of Selected Peripheral Clock **********************************************************************/ uint32_t CLKPWR_GetPCLK (uint32_t ClkType) { uint32_t retval, div; retval = SystemCoreClock; div = CLKPWR_GetPCLKSEL(ClkType); switch (div) { case 0: div = 4; break; case 1: div = 1; break; case 2: div = 2; break; case 3: div = 8; break; } retval /= div; return retval; } /*********************************************************************//** * @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_PCTIM0 : Timer 0 - CLKPWR_PCONP_PCTIM1 : Timer 1 - CLKPWR_PCONP_PCUART0 : UART 0 - CLKPWR_PCONP_PCUART1 : UART 1 - CLKPWR_PCONP_PCPWM1 : PWM 1 - CLKPWR_PCONP_PCI2C0 : I2C 0 - CLKPWR_PCONP_PCSPI : SPI - CLKPWR_PCONP_PCRTC : RTC - CLKPWR_PCONP_PCSSP1 : SSP 1 - CLKPWR_PCONP_PCAD : ADC - CLKPWR_PCONP_PCAN1 : CAN 1 - CLKPWR_PCONP_PCAN2 : CAN 2 - CLKPWR_PCONP_PCGPIO : GPIO - CLKPWR_PCONP_PCRIT : RIT - CLKPWR_PCONP_PCMC : MC - CLKPWR_PCONP_PCQEI : QEI - CLKPWR_PCONP_PCI2C1 : I2C 1 - 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_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 & CLKPWR_PCONP_BITMASK; } else if (NewState == DISABLE) { LPC_SC->PCONP &= (~PPType) & CLKPWR_PCONP_BITMASK; } } /** * @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 = 0x00; /* 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 = 0x01; /* Sleep 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; /* Sleep Mode*/ __WFI(); } /** * @brief Configure Brown-Out function in */ /** * @} */ /** * @} */ /* --------------------------------- End Of File ------------------------------ */