app twi with ads1015 init transfer error

[chenyang08s]

I tried to modify the twi_master_using_app_twi to work with adafruit ADS1015 as a slave. I ran into this problem. It seems that the init_transfer doesn't finish so the app_twi_perform command just keeps it hanging. Can someone tell me how to fix this? Thanks.

[Anders Strand]

Hi.

I would check a couple of things:

• Is the pins assigned to TWI correct? Are they used by something else like UART or RTC?
• Does the app_twi_perform return with an error code? If so, which error code? See this post for more detail.
• The next step is to use a logic analyzer on the pins and see if there is any TWI traffic at all.

-Anders

[Rocky Liang]

@chenyang08s, have you solve your TWI problem? If you have, could you please tell me what the problem was? I am experiencing the same program as you did in my project.