Hello,
I previously used DECT NR+ modem firmware mfw-nr+_nrf91x1_1.0.2 on nRF9151 DK Development kit and moved on using the new modem firmware mfw-nr+_nrf91x1_1.1.0.
But now I noticed that COEX0/2 interface is not working anymore at my setup.
With mfw-nr+_nrf91x1_1.0.2 in my prj.conf I did
CONFIG_MODEM_ANTENNA=y
CONFIG_MODEM_ANTENNA_AT_MAGPIO=""
# Activate COEX pins as defined in nRF91x1_DECT_NR_AT_Commands_.pdf
# 4.9 Combined configuration of COEX pins %COEXCONFIG
# %COEXCONFIG[=<RX>,<TX>,<LBT>[,<drive>]]
# 0 – No
# 1 – COEX0
# 2 – COEX2
# RX (COEX2) | TX (COEX0) | LBT (OFF)
CONFIG_MODEM_ANTENNA_AT_COEX0="AT%COEXCONFIG=1,2,0"
which worked without problems. I also tried to switch versions/mfw back and forth but without success.
I also looked up your AT command documentation at docs.nordicsemi.com/.../coexconfig_set.html.
Was there some change with the new modem firmware? What can I do to get the COEX interface working again?
Best regards
Rainer