Test

flowchart TD A_AUX_out(A AUX out) B_AUX_in>B AUX in] A_PTT_out(A PTT out) B_PTT_in>B PTT in] B_AUX_out(B AUX out) A_AUX_in>A AUX in] B_PTT_out(B PTT out) A_PTT_in>A PTT in] A_GND B_GND

%% Direct Pinout
A_GND    --> B_GND
A_AUX_out --> B_AUX_in
A_PTT_out --> B_PTT_in
B_AUX_out --> A_AUX_in
B_PTT_out --> A_PTT_in

%% %% From radio to pc
%% A_AUX_out --> R1
%% R1 --> PC_AUX_in
%% A_PTT_out --> |control | R1

%% B_AUX_out --> R2
%% B_PTT_out --> |control | R2
%% R2 --> PC_AUX_in

%% %% From PC to radio
%% PC_AUX_out --> A_AUX_in
%% PC_AUX_out --> B_AUX_in

%% PC_PTT_out -->|control| R3
%% R3 --> A_PTT_in

%% PC_PTT_out -->|control| R4
%% R4 --> B_PTT_in