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Implement REGULATORY_GAIN and SX126X_MAX_POWER in XIAO BLE EBYTE E22

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Specify REGULATORY_GAIN and SX126X_MAX_POWER to prevent exceeding regulatory and hardware limits (i.e. overloading the PA input) respectively.

Also update the build flag to define EBYTE_E22_900M30S instead of just EBYTE_E22, since all the builds on the Discourse topic [New 1W DIY variant: Xiao nRF52840 + Ebyte E22-900M30S](https://meshtastic.discourse.group/t/new-1w-diy-variant-xiao-nrf52840-ebyte-e22-900m30s/7904) are using this module.

That should make it clearer as well that the variant header file should be tweaked if DIY builds are using stronger (E22-900M33S, not commonly available at this time) or weaker (E22-900M22S, not popular for DIY builds due to lack of differentiation from ordinary SX1262 modules).

Retain EBYTE_E22 flag alongside EBYTE_E22_900M30S build flag to prevent possible regressions in code paths generally intended for EBYTE E22 modules.

Signed-off-by: Andrew Yong <me@ndoo.sg>
This commit is contained in:
Andrew Yong 2024-05-09 02:27:29 +08:00
parent 3cda598673
commit d1d49efc6e
2 changed files with 6 additions and 1 deletions
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2
variants/xiao_ble/platformio.ini
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@ -3,7 +3,7 @@
extends = nrf52840_base
board = xiao_ble_sense
board_level = extra
build_flags = ${nrf52840_base.build_flags} -Ivariants/xiao_ble -Dxiao_ble -D EBYTE_E22
build_flags = ${nrf52840_base.build_flags} -Ivariants/xiao_ble -Dxiao_ble -DEBYTE_E22 -DEBYTE_E22_900M30S
-L "${platformio.libdeps_dir}/${this.__env__}/bsec2/src/cortex-m4/fpv4-sp-d16-hard"
build_src_filter = ${nrf52_base.build_src_filter} +<../variants/xiao_ble>
lib_deps =

5
variants/xiao_ble/variant.h
View File

@ -142,6 +142,11 @@ static const uint8_t SCK = PIN_SPI_SCK;
// (which is the default for the sx1262interface code)
#define SX126X_DIO2_AS_RF_SWITCH
#define SX126X_DIO3_TCXO_VOLTAGE 1.8
#ifdef EBYTE_E22_900M30S
// 10dB PA gain and 30dB rated output; based on PA output table from Ebyte Robin <sales06@ebyte.com>
#define REGULATORY_GAIN 10
#define SX126X_MAX_POWER 20
#endif
#endif
/*