1.13. lpc17xx_exti Module

External interrupt client library functions. Find implementation details in CMSIS-Compliant Standard Peripheral Firmware Driver Library documentation.

robovero.lpc17xx_exti.EXTI_ClearEXTIFlag(EXTILine)

Clear External interrupt flag.

Args:

• EXTILine: external interrupt line, should be:
  • EXTI_EINT0: external interrupt line 0
  • EXTI_EINT1: external interrupt line 1
  • EXTI_EINT2: external interrupt line 2
  • EXTI_EINT3: external interrupt line 3

robovero.lpc17xx_exti.EXTI_Config(EXTICfg)

Configuration for EXT. Set EXTINT, EXTMODE, EXTPOLAR register.

Args:

• EXTICfg: Pointer to a EXTI_InitTypeDef structure that contains the

  configuration information for the specified external interrupt

robovero.lpc17xx_exti.EXTI_DeInit()

Close EXT.

robovero.lpc17xx_exti.EXTI_Init()

Set EXTINT, EXTMODE, EXTPOLAR registers to default value.

class robovero.lpc17xx_exti.EXTI_InitTypeDef(**kwargs)

Bases: robovero.internals.cstruct

EXTI Initialize structure.

• EXTI_Line: Select external interrupt pin (EINT0, EINT1, EINT 2, EINT3)
• EXTI_Mode: Choose between Level-sensitivity or Edge sensitivity

• EXTI_polarity: If EXTI mode is level-sensitive: this element use to select

  low or high active level if EXTI mode is polarity-sensitive: this element use to select falling or rising edge

• ptr: LPC1769 memory address where structure is stored. Use this in place of

  the C reference operator (&).

class robovero.lpc17xx_exti.EXTI_LINE_ENUM

EXTI external interrupt line option.

EXTI_EINT0 = 0

EXTI_EINT1 = 1

EXTI_EINT2 = 2

EXTI_EINT3 = 3

class robovero.lpc17xx_exti.EXTI_MODE_ENUM

EXTI mode option.

EXTI_MODE_EDGE_SENSITIVE = 1

EXTI_MODE_LEVEL_SENSITIVE = 0

class robovero.lpc17xx_exti.EXTI_POLARITY_ENUM

EXTI polarity option.

EXTI_POLARITY_HIGH_ACTIVE_OR_RISING_EDGE = 1

EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE = 0

robovero.lpc17xx_exti.EXTI_SetMode(EXTILine, mode)

Set mode for EXTI pin.

Args:

• EXTILine: external interrupt line, should be:
  • EXTI_EINT0: external interrupt line 0
  • EXTI_EINT1: external interrupt line 1
  • EXTI_EINT2: external interrupt line 2
  • EXTI_EINT3: external interrupt line 3
• mode: external mode, should be:
  • EXTI_MODE_LEVEL_SENSITIVE
  • EXTI_MODE_EDGE_SENSITIVE

robovero.lpc17xx_exti.EXTI_SetPolarity(EXTILine, polarity)

Set polarity for EXTI pin.

Args:

• EXTILine: external interrupt line, should be:
  • EXTI_EINT0: external interrupt line 0
  • EXTI_EINT1: external interrupt line 1
  • EXTI_EINT2: external interrupt line 2
  • EXTI_EINT3: external interrupt line 3
• polarity: external polarity value, should be:
  • EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE
  • EXTI_POLARITY_LOW_ACTIVE_OR_FALLING_EDGE