In USP examples, the default BSP configuration of LR20xx radios is focused on EU & US regions and LR2021 LoRa Plus EVK.
When using the LR2021 LoRa Plus EVK for other regions, or when porting to dedicated PCBs designed for other frequency bands, make sure to update the radio BSP file ral_lr20xx_bsp.c, to enables full optimization.
For example, for LR2021 LoRa Plus EVK China (CN) versions, the PA table configuration shall be adjusted as defined in LR2021 Datasheet page 134 to (CN - 490Mhz) band for optimal performances. Similarly, the front end calibration frequencies may be more optimized for China version with the following frequencies in ral_lr20xx_bsp_get_front_end_calibration_cfg() : 470000000, 920000000, 2441000000 .
Next releases will try to make easier such configuration.
In USP examples, the default BSP configuration of LR20xx radios is focused on EU & US regions and LR2021 LoRa Plus EVK.
When using the LR2021 LoRa Plus EVK for other regions, or when porting to dedicated PCBs designed for other frequency bands, make sure to update the radio BSP file
ral_lr20xx_bsp.c, to enables full optimization.For example, for LR2021 LoRa Plus EVK China (CN) versions, the PA table configuration shall be adjusted as defined in LR2021 Datasheet page 134 to (CN - 490Mhz) band for optimal performances. Similarly, the front end calibration frequencies may be more optimized for China version with the following frequencies in
ral_lr20xx_bsp_get_front_end_calibration_cfg(): 470000000, 920000000, 2441000000 .Next releases will try to make easier such configuration.