CC2340R5: Can we share CC2340R5 SWDIO/SWDCK pin for I2C usage?

Jerry Kuo

Part Number: CC2340R5
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi team,

My customer use CC2340R5. The pin count are not enough for their application. Customer ask if SWDIO/SWDCK pin for I2C usage ? If yes, how to do this ?

Thank you.

4 months ago

0 Clément 4 months ago

TI__Guru** 101100 points

Hi Jerry,

Yes, SWDIO and SWDCK pins can be repurposed as I2C pins as indicated in the Table 6-1 "Pin Attributes" of the data sheet https://www.ti.com/lit/gpn/cc2340r5. The screenshot below should be what you are specifically looking for:

The pin muxing can be modified using SysConfig > I2C > Pin Mux.

Note that, on the LaunchPad, the SWDIO and SWDCK pins are not routed to a connector, so they are marked as "Device only". This is not an issue on a custom design.

I hope this will help,

Best regards,

0 Clément 4 months ago

TI__Guru** 101100 points

Hi,

For information, a question related to this thread has been spltted and answered here: https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1408255/re-cc2340r5-can-we-share-cc2340r5-swdio-swdck-pin-for-i2c-usage

Regards,

Bluetooth®︎

Bluetooth forum

CC2340R5: Can we share CC2340R5 SWDIO/SWDCK pin for I2C usage?