hey all, first time/long time/great to be here and all that jazz.
So I have a 28440 module that I've hooked up to my pi (version 3) and I have yet to see anything resembling a red led go on. I've seen the green turn off, but no red. I'm also unable to get any data from the module. TX appears to work because I can get the LED to go off and on when attempting to read the tag serial, but the rx buffer is empty. I read here and elsewhere for something remotely resembling my situation without any help so it's time to post. I've got a pi3 with the GPIO ribbon attached to the breadboard. Jumpers going from 5v DC to vcc, gnd to gnd, tx to sin, rx to sout. Not my first rodeo, I can at least follow those basic instructions. Since I have to do things the hard way and it seems nobody here uses python for these modules, that's what I'm using in conjunction with pyserial. Below is a snippet of what I'm attempting.
from time import sleep
ser = serial.Serial('/dev/serial0', 9600, timeout=5)
if ser.in_waiting > 0:
res_code = ser.read(1)
if res_code == '\x01':
tag_id = to_hex(ser.read(4))
print('[*] Tag ID is: ' + tag_id)
print('[-] Great you broke it')