Missing option in CubeMX for battery charging on STM32H730

[MRick.2]

In CubeMX ther is missing optines to select charging of the battery and the seceltion of charging resistor 1.5K or 5K

I would expect it to be under "System Core" -> RCC as it should go into resig PWR_CR3

So for my system I have to duck in "main.c"

HAL_PWREx_ConfigSupply (PWR_LDO_SUPPLY);

to

HAL_PWREx_ConfigSupply (PWR_LDO_SUPPLY | PWR_CR3_VBE | PWR_BATTERY_CHARGING_RESISTOR_1_5);

But it gets keeping over written from CubeMX

It is this 2 bits in PWR_CR3

Bit 9 VBRS: VBAT charging resistor selection

0: Charge VBAT through a 5 k Ω resistor.

1: Charge VBAT through a 1.5 k Ω resistor.

Bit 8 VBE: VBAT charging enable

0: VBAT battery charging disabled.

1: VBAT battery charging enabled.

[Sara BEN HADJ YAHYA]

Hello @MRick.2​ ,

Thanks for your feedback,

Actually there is no PWR_CR3 for STM32F730, could you please provide us with more details to understand your request.

Thanks,

Sara.

[MRick.2]

Sorry the STM32H730

[Sara BEN HADJ YAHYA · Accepted solution]

Hello @MRick.2​ ,

There are HAL_PWREx_EnableBatteryCharging (uint32_t ResistorValue) and HAL_PWREx_DisableBatteryCharging (void) functions that enables and disables battery charging, these functions are placed in stm32h7xx_hal_pwr_ex.c file.

HAL_PWREx_ConfigSupply() Configures the system Power Supply and it doesn't enable or disable battery charging.

I hope this helps !

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Sara.

[MRick.2]

Case closed 🙂