TWI and BLE integration test

[Daeho]

Dear, manager.

Hi,

I am currently testing the use of TWI and BLE together.

However, Data (24bit) is received and read through TWI every 4ms. BLE is only initialized, and TWI data becomes strange by simply turning on BLE, whether it is initialization or transmission.

I receive TWI 3 times each 8bit, but there seems to be no data.

Example)

Data1	Data2	Data3
56	155	135
56	116	66
56	154	128
56	155	62
56	173	131
56	120	179
56	99	95
56	201	53
0	11	98
0	11	64
0	11	41
0	11	43
0	11	158
0	11	139
0	11	81
0	11	81

How do I get the correct data?

I would appreciate your reply.

Thank you.

Regards.

[awneil]

So it works fine with no BLE?

Have you used an analyser or scope to see what's happening on the TWI lines?

Which pins are you using?

[Daeho]

First, thank you for the answer.

I using a P0.14 and P0.15.

When the TWI line is checked using the scope, it is displayed fine.

And it works fine without BLE.

#define TWI_SCL 15
#define TWI_SDA 14

[Kenneth]

Can you also output the readData1, readData2, and readData3 to terminal?

Kenneth

[Daeho]

It's listed as a table in the first question, or are you referring to something else?

[Kenneth]

Okey, I just saw the code you suppled were using both 'data' and 'readData', so just wanted to make sure that the values you listed were the actual twi data ('readData'), and not a calculation of twi data ('data'). 

I think next step is really to decode those twi data on a logic analyzer. I do not see how BLE can interfere here.

Kenneth

[Daeho]

Thank you for your reply.

I used the TWI function. Then it was resolved.

I wanted to solve it using registers.

Thank you.

Regards.

[awneil]

Daeho said:

it was resolved

Great!