nrf_drv_twi_tx twi softdevice s110 problem

[justin chang]

hi~ i am working with nrf 51822 with custom board and softdevice s110. i am using is7020-a20 temperature / humidity sensor via twi (i2c)

i tried 2 versions of twi example in sdk ver.10 using nrf_drv_twi and app_twi. twi_init() looks working fine on both.

address of pin scl is 15 and sda is 16 and address of sensor is (0x80 >> 1). i checked it several times.

when i execute nrf_drv_twi_tx() or nrf_drv_twi_rx(), device stops and doesn't work neither app_twi_perform().

i know that app_twi_xxx functions uses nrf_drv_twi_xxx functions.

i read some questions about twi communication with softdevice s110. so i tried to assign ppi channel to twi and it didn't work too.

please check my code and tell me what is wrong with my code

i commented out what i've tried before, so check the commented code too. thanx. main.c

[justin chang]

hi, thanks for answer. yes, i tried to running twi example without softdevice and got right return values. it still doesn't work with softdevice. it seems reset when execute nrf_drv_twi_tx() with softdevice. i have two leds, so i tested that led1 blinks when tx_done and led2 blinks when rx_done in twi_handler without softdevice. i checked with ocillator, scl and sda are fine without softdevice but it doesn't with softdevice. it doesn't show any waves. is there any common trouble issue for twi with softdevice?