Black Lives Matter - Action and Equality. ... Adafruit joins the Stop Hate for Profit campaign.

Feather 32u4 Pinout
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Feather 32u4 Pinout

by RichardRV on Wed Jul 05, 2017 9:02 pm

Hello. I am trying to locate pin D8_CS on the schematic for the Feather 32u4 for the LoRa radio module.

Here is a link to the schematic: ... /downloads .
Here is a link to the module itself: ... m-9x-radio .

In the software example these are the assignments provided:
/* for feather32u4 */
#define RFM95_CS 8
#define RFM95_RST 4
#define RFM95_INT 7

These pin number don't make any sense because D7_IRQ is on pin 1 and the pin is labeled (PE6.INT.6/AIN0). The reset signal D4_RST is on pin 25, but that pin name is PD4_RST. I cannot locate D8_CS at all on the microcontroller, but the code shows a value of "8" (again, it makes no sense), as shown above. In the schematic, there is no connection to "D8_CS" anywhere.

All of these inconsistencies make it difficult to follow the code and hardware. Since I'm learning how to use this module, I need some way of finding these pin assignments from something other than this source code. Can you please help me straighten out this confusion?

Thank you, Richard V

Posts: 1
Joined: Wed Jul 05, 2017 8:48 pm

Re: Feather 32u4 Pinout

by franklin97355 on Wed Jul 05, 2017 9:21 pm

D8 is not brought out to the board but directly connects to the radio module.

Posts: 21498
Joined: Mon Apr 21, 2008 2:33 pm
Location: Lacomb, OR.

Please be positive and constructive with your questions and comments.