I use external pa, LNA, but the polarity is contrary to the recommended application, that is, when tx, GPIO4, GPIO5 pull down, when rx, GPIO6 pull down, how to configure?
Please have a look at our APS009, attached
APS009_DW1000_under_LAES…pdf (896.0 KB)
if possible , you can add phase inverter between PA/LNA and the GPIO port .
On the manual:
• GPIO 6 may be configured for use as EXTRXE (External Receiver Enable). This pin goes
high when the DW1000 is in receive mode (receiver is active).
• GPIO 5 may be configured for use as EXTTXE (External Transmit Enable). This pin goes high
when the DW1000 is actively transmitting data.
But we need GPIO6 pull down when in receive mode, and GPIO5 pull down when in transmite mode.
How do I configure for this?
Or can dw1000 not support pull down GPIO6 when receive mode and pull downGPIO5 when transmitting mode?