initialization two TWI and Only one is work

[ChiragBhavsar]

I used nrf52840 board with SDK 17_1_0 

I used segger embedded studio IDE

i want to Implement two VL53L5CX TOF sensor with nrf52840  so i used two TWI,

but when i init two TWI then only one TWI is work which one second initialization,

like  

#define TWI_INSTANCE_ID 0
#define TWI_INSTANCE_ID1 1

/* TWI instance. */
nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID);
nrf_drv_twi_t m_twi1 = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID1);

IW_IIC_Init(&m_twi); 

IW_IIC_Init1(&m_twi1);

then  IW_IIC_Init1 work,

when i init like

IW_IIC_Init1(&m_twi1); 

IW_IIC_Init(&m_twi);

then IW_IIC_Init work both are not work ony one TWI is work,

how both TWI is work?

[PjGlasso]

Hi there,

I was under the impression only 1 and 2 are available, 0 is used for QSPI?

look forward to an Answer.

GL :-) PJ

[ChiragBhavsar]

Hi,

in sdk_config.h two instance available o and 1

/ <e> TWI0_ENABLED - Enable TWI0 instance
//==========================================================
#ifndef TWI0_ENABLED
#define TWI0_ENABLED 1
#endif
// <q> TWI0_USE_EASY_DMA - Use EasyDMA (if present)

#ifndef TWI0_USE_EASY_DMA
#define TWI0_USE_EASY_DMA 1
#endif

// </e>

// <e> TWI1_ENABLED - Enable TWI1 instance
//==========================================================
#ifndef TWI1_ENABLED
#define TWI1_ENABLED 1
#endif
// <q> TWI1_USE_EASY_DMA - Use EasyDMA (if present)

#ifndef TWI1_USE_EASY_DMA
#define TWI1_USE_EASY_DMA 1
#endif