lpc176x_clk.h File Reference

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Defines
#define	XTAL   (12000000UL)
#define	OSC_CLK   ( XTAL)
#define	RTC_CLK   ( 32000UL)
#define	IRC_OSC   ( 4000000UL)
#define	CLKPWR_PCLKSEL_WDT   0
#define	CLKPWR_PCLKSEL_TIMER0   2
#define	CLKPWR_PCLKSEL_TIMER1   4
#define	CLKPWR_PCLKSEL_UART0   6
#define	CLKPWR_PCLKSEL_UART1   8
#define	CLKPWR_PCLKSEL_PWM1   12
#define	CLKPWR_PCLKSEL_I2C0   14
#define	CLKPWR_PCLKSEL_SPI   16
#define	CLKPWR_PCLKSEL_SSP1   20
#define	CLKPWR_PCLKSEL_DAC   22
#define	CLKPWR_PCLKSEL_ADC   24
#define	CLKPWR_PCLKSEL_CAN1   26
#define	CLKPWR_PCLKSEL_CAN2   28
#define	CLKPWR_PCLKSEL_ACF   30
#define	CLKPWR_PCLKSEL_QEI   32
#define	CLKPWR_PCLKSEL_PCB   36
#define	CLKPWR_PCLKSEL_I2C1   38
#define	CLKPWR_PCLKSEL_SSP0   42
#define	CLKPWR_PCLKSEL_TIMER2   44
#define	CLKPWR_PCLKSEL_TIMER3   46
#define	CLKPWR_PCLKSEL_UART2   48
#define	CLKPWR_PCLKSEL_UART3   50
#define	CLKPWR_PCLKSEL_I2C2   52
#define	CLKPWR_PCLKSEL_I2S   54
#define	CLKPWR_PCLKSEL_RIT   58
#define	CLKPWR_PCLKSEL_SYSCON   60
#define	CLKPWR_PCLKSEL_MC   62
#define	CLKPWR_PCLKSEL_CCLK_DIV_4   0
#define	CLKPWR_PCLKSEL_CCLK_DIV_1   1
#define	CLKPWR_PCLKSEL_CCLK_DIV_2   2
#define	CLKPWR_PCONP_PCTIM0   1
#define	CLKPWR_PCONP_PCTIM1   2
#define	CLKPWR_PCONP_PCUART0   3
#define	CLKPWR_PCONP_PCUART1   4
#define	CLKPWR_PCONP_PCPWM1   6
#define	CLKPWR_PCONP_PCI2C0   7
#define	CLKPWR_PCONP_PCSPI   8
#define	CLKPWR_PCONP_PCRTC   9
#define	CLKPWR_PCONP_PCSSP1   10
#define	CLKPWR_PCONP_PCAD   12
#define	CLKPWR_PCONP_PCAN1   13
#define	CLKPWR_PCONP_PCAN2   14
#define	CLKPWR_PCONP_PCGPIO   15
#define	CLKPWR_PCONP_PCRIT   16
#define	CLKPWR_PCONP_PCMC   17
#define	CLKPWR_PCONP_PCQEI   18
#define	CLKPWR_PCONP_PCI2C1   19
#define	CLKPWR_PCONP_PCSSP0   21
#define	CLKPWR_PCONP_PCTIM2   22
#define	CLKPWR_PCONP_PCTIM3   23
#define	CLKPWR_PCONP_PCUART2   24
#define	CLKPWR_PCONP_PCUART3   25
#define	CLKPWR_PCONP_PCI2C2   26
#define	CLKPWR_PCONP_PCI2S   27
#define	CLKPWR_PCONP_PCGPDMA   29
#define	CLKPWR_PCONP_PCENET   30
#define	CLKPWR_PCONP_PCUSB   31
#define	SysCtlPeripheralClkEnable(bit)   CM3BBREG(LPC_SC_BASE, LPC_SC_TypeDef, PCONP, (bit)) = 1
#define	SysCtlPeripheralClkDisable(bit)   CM3BBREG(LPC_SC_BASE, LPC_SC_TypeDef, PCONP, (bit)) = 0
#define	SysCtlPeripheralClkGet(bit)   CM3BBREG(LPC_SC_BASE, LPC_SC_TypeDef, PCONP, (bit))
#define	NS_2_CLKS(clock, ns)   (((((((clock) >> 4)*69) >> 20)*(ns))>>12)+1)
Functions
uint32_t	SysCtlClockGet (void)
	requests System clock frequency
int	SetSysClock (void)
	Update SystemCoreClock according to Clock Register Values.
uint32_t	Lpc17xx_ClockGet (int idx)
	requests frequency of the given clock

---

Define Documentation

#define XTAL   (12000000UL)

#define OSC_CLK   ( XTAL)

Referenced by SystemCoreClockUpdate().

#define RTC_CLK   ( 32000UL)

Referenced by SystemCoreClockUpdate().

#define IRC_OSC   ( 4000000UL)

Referenced by SystemCoreClockUpdate().

#define CLKPWR_PCLKSEL_WDT   0

#define CLKPWR_PCLKSEL_TIMER0   2

#define CLKPWR_PCLKSEL_TIMER1   4

#define CLKPWR_PCLKSEL_UART0   6

#define CLKPWR_PCLKSEL_UART1   8

#define CLKPWR_PCLKSEL_PWM1   12

#define CLKPWR_PCLKSEL_I2C0   14

#define CLKPWR_PCLKSEL_SPI   16

#define CLKPWR_PCLKSEL_SSP1   20

#define CLKPWR_PCLKSEL_DAC   22

#define CLKPWR_PCLKSEL_ADC   24

#define CLKPWR_PCLKSEL_CAN1   26

#define CLKPWR_PCLKSEL_CAN2   28

#define CLKPWR_PCLKSEL_ACF   30

#define CLKPWR_PCLKSEL_QEI   32

#define CLKPWR_PCLKSEL_PCB   36

#define CLKPWR_PCLKSEL_I2C1   38

#define CLKPWR_PCLKSEL_SSP0   42

#define CLKPWR_PCLKSEL_TIMER2   44

#define CLKPWR_PCLKSEL_TIMER3   46

#define CLKPWR_PCLKSEL_UART2   48

#define CLKPWR_PCLKSEL_UART3   50

#define CLKPWR_PCLKSEL_I2C2   52

#define CLKPWR_PCLKSEL_I2S   54

#define CLKPWR_PCLKSEL_RIT   58

#define CLKPWR_PCLKSEL_SYSCON   60

#define CLKPWR_PCLKSEL_MC   62

#define CLKPWR_PCLKSEL_CCLK_DIV_4   0

#define CLKPWR_PCLKSEL_CCLK_DIV_1   1

#define CLKPWR_PCLKSEL_CCLK_DIV_2   2

#define CLKPWR_PCONP_PCTIM0   1

#define CLKPWR_PCONP_PCTIM1   2

#define CLKPWR_PCONP_PCUART0   3

#define CLKPWR_PCONP_PCUART1   4

#define CLKPWR_PCONP_PCPWM1   6

#define CLKPWR_PCONP_PCI2C0   7

#define CLKPWR_PCONP_PCSPI   8

#define CLKPWR_PCONP_PCRTC   9

#define CLKPWR_PCONP_PCSSP1   10

#define CLKPWR_PCONP_PCAD   12

#define CLKPWR_PCONP_PCAN1   13

#define CLKPWR_PCONP_PCAN2   14

#define CLKPWR_PCONP_PCGPIO   15

#define CLKPWR_PCONP_PCRIT   16

#define CLKPWR_PCONP_PCMC   17

#define CLKPWR_PCONP_PCQEI   18

#define CLKPWR_PCONP_PCI2C1   19

#define CLKPWR_PCONP_PCSSP0   21

#define CLKPWR_PCONP_PCTIM2   22

#define CLKPWR_PCONP_PCTIM3   23

#define CLKPWR_PCONP_PCUART2   24

#define CLKPWR_PCONP_PCUART3   25

#define CLKPWR_PCONP_PCI2C2   26

#define CLKPWR_PCONP_PCI2S   27

#define CLKPWR_PCONP_PCGPDMA   29

Referenced by Lpc17xxGPDMA_Init().

#define CLKPWR_PCONP_PCENET   30

Referenced by Lpc17xxEmacInit().

#define CLKPWR_PCONP_PCUSB   31

#define SysCtlPeripheralClkEnable

(

bit

)

CM3BBREG(LPC_SC_BASE, LPC_SC_TypeDef, PCONP, (bit)) = 1

Referenced by Lpc177x_8x_EmcInit(), Lpc177x_8x_MciInit(), Lpc17xxEmacInit(), and Lpc17xxGPDMA_Init().

#define SysCtlPeripheralClkDisable

(

bit

)

CM3BBREG(LPC_SC_BASE, LPC_SC_TypeDef, PCONP, (bit)) = 0

#define SysCtlPeripheralClkGet

(

bit

)

CM3BBREG(LPC_SC_BASE, LPC_SC_TypeDef, PCONP, (bit))

#define NS_2_CLKS	(		clock,
			ns
	)		(((((((clock) >> 4)*69) >> 20)*(ns))>>12)+1)

Referenced by Lpc177x_8x_EmcSDRAMInit().

---

Function Documentation

uint32_t SysCtlClockGet

(

void

)

requests System clock frequency

Note:

This function should be used only after reset.

Parameters:

None

Return values:

None

Referenced by NutRegisterTimer().

int SetSysClock

(

void

)

Update SystemCoreClock according to Clock Register Values.

This function reads out the CPUs clock and PLL registers and assembles the actual clock speed values into the SystemCoreClock global variable. Sets System clock frequency to the configured defaults.

Note:

This function should be used only after reset.

Parameters:

None

Return values:

None	Update SystemCoreClock according to Clock Register Values.

Note:

This function should be used only after reset.

Parameters:

None

Return values:

None	Update SystemCoreClock according to Clock Register Values.

Enable HSI/HSE clock and setup HCLK, PCLK2 and PCLK1 prescalers.

Parameters:

None.

Returns:

0 on success, -1 on fault of HSE.

Referenced by SystemInit().

uint32_t Lpc17xx_ClockGet

(

int

idx

)

requests frequency of the given clock

Parameters:

idx	NUT_HWCLK Index

Return values:

clock

or 0 if idx points to an invalid clock

Referenced by Lpc177x_8x_MciSet_MCIClock(), and NutArchClockGet().