lib: stm32wba: use reference count for backup domain accesses #290
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This change is related to zephyrproject-rtos/zephyr#92005. |
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HAL libraries are not supposed to call Zephyr code.
Alternative it to move these porting functions within zephyr repo, where they're supposed to be implemented. See https://github.com/zephyrproject-rtos/zephyr/soc/st/stm32/stm32wbax/hci_if/linklayer_plat_adapt.c
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Ok, thanks, I'll update this P-R and created the related one in Zephyr. |
lib/stm32wba/BLE_TransparentMode/STM32_WPAN/Target/linklayer_plat.c
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Updated. |
Add LINKLAYER_PLAT_EnableBackupDomainAccess() and LINKLAYER_PLAT_DisableBackupDomainAccess() to use Zephyr resources that use a reference counter for access requests, for enabling and disabling access the BackupDomain resources. Signed-off-by: Etienne Carriere <[email protected]>
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Updated to lower impact on lib/stm32wba maintenance. |
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@asm587, as mentionned by @mathieuchopstm ideally we should move whole function to zephyr repo. |
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@erwango Indeed I totally agree with you |
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Use Zephyr function
stm32_backup_domain_enable_access()andstm32_backup_domain_disable_access()to enable/disable access to LSE configuration registers under back domain access protection instead of raw access. These functions have a reference counter for access requests to ensure access remains enabled when other component require it.