TWI/TWIM peripheral driver - legacy layer configuration

Macros
#define	TWI_ENABLED
	Set to 1 to activate. More...
#define	TWI_DEFAULT_CONFIG_FREQUENCY
	Frequency. More...
#define	TWI_DEFAULT_CONFIG_CLR_BUS_INIT
	Enables bus clearing procedure during init. More...
#define	TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT
	Enables bus holding after uninit. More...
#define	TWI_DEFAULT_CONFIG_IRQ_PRIORITY
	Interrupt priority. More...
#define	TWI0_ENABLED
	Enable TWI0 instance. More...
#define	TWI0_USE_EASY_DMA
	Use EasyDMA (if present) More...
#define	TWI1_ENABLED
	Enable TWI1 instance. More...
#define	TWI1_USE_EASY_DMA
	Use EasyDMA (if present) More...
#define	TWIM_NRF52_ANOMALY_109_WORKAROUND_ENABLED
	Enables nRF52 anomaly 109 workaround for TWIM. More...

Detailed Description

Macro Definition Documentation

#define TWI0_ENABLED

Enable TWI0 instance.

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWI0_USE_EASY_DMA

Use EasyDMA (if present)

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWI1_ENABLED

Enable TWI1 instance.

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWI1_USE_EASY_DMA

Use EasyDMA (if present)

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWI_DEFAULT_CONFIG_CLR_BUS_INIT

Enables bus clearing procedure during init.

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWI_DEFAULT_CONFIG_FREQUENCY

Frequency.

Following options are available:

• 26738688 - 100k
• 67108864 - 250k
• 104857600 - 400k

Note

This is an NRF_CONFIG macro.

#define TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT

Enables bus holding after uninit.

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWI_DEFAULT_CONFIG_IRQ_PRIORITY

Interrupt priority.

Priorities 0,2 (nRF51) and 0,1,4,5 (nRF52) are reserved for SoftDevice

Following options are available:

• 0 - 0 (highest)
• 1 - 1
• 2 - 2
• 3 - 3
• 4 - 4 (Applicable devices only)
• 5 - 5 (Applicable devices only)
• 6 - 6 (Applicable devices only)
• 7 - 7 (Applicable devices only)

Note

This is an NRF_CONFIG macro.

#define TWI_ENABLED

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.

#define TWIM_NRF52_ANOMALY_109_WORKAROUND_ENABLED

Enables nRF52 anomaly 109 workaround for TWIM.

The workaround uses interrupts to wake up the CPU by catching the start event of zero-frequency transmission, clear the peripheral, set desired frequency, start the peripheral, and the proper transmission. See more in the Errata document or Anomaly 109 Addendum located at https://infocenter.nordicsemi.com/

Set to 1 to activate.

Note

This is an NRF_CONFIG macro.