Arduino for STM32

Posted: **Mon Jul 08, 2024 11:54 am**

Some days before I tried out DAC on STMG431. At the beginning I placed a

#define HAL_DAC_MODULE_ENABLED

inside my code. Later I found out, it's not necessary. But where are HAL-modules enabled?

1. First question: can I use a

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#define HAL_***_MODULE_DISABLED

or

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#undef HAL_***_MODULE_ENABLED

to disable some HAL-modules on sketch-level, if some peripheral modules are not used?

2. I looked at Wiki "HAL configuration".
Under the path \STMicroelectronics\hardware\stm32\2.7.1\system\STM32G4xx is a file stm32g4xx_hal_conf.h with this content:

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/* STM32G4xx specific HAL configuration options. */
#if __has_include("hal_conf_custom.h")
#include "hal_conf_custom.h"
#else
#if __has_include("hal_conf_extra.h")
#include "hal_conf_extra.h"
#endif
#include "stm32g4xx_hal_conf_default.h"
#endif

__has_include checks, if a file is extisting, only if it exists it is included?
So if there is no hal_conf_custom.h, it can include a headerfile hal_conf_extra.h, but it always include stm32g4xx_hal_conf_default.h - is this correct?

Inside stm32g4xx_hal_conf_default.h I see:

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#include "stm32yyxx_hal_conf.h"
#if 0
#define HAL_MODULE_ENABLED
#define HAL_ADC_MODULE_ENABLED
#define HAL_COMP_MODULE_ENABLED
#define HAL_CORDIC_MODULE_ENABLED
#define HAL_CORTEX_MODULE_ENABLED
#define HAL_CRC_MODULE_ENABLED
#define HAL_CRYP_MODULE_ENABLED
#define HAL_DAC_MODULE_ENABLED
#define HAL_DMA_MODULE_ENABLED
#define HAL_EXTI_MODULE_ENABLED
#define HAL_FDCAN_MODULE_ENABLED
#define HAL_FLASH_MODULE_ENABLED
#define HAL_FMAC_MODULE_ENABLED
#define HAL_GPIO_MODULE_ENABLED
#define HAL_HRTIM_MODULE_ENABLED
#define HAL_IRDA_MODULE_ENABLED
#define HAL_IWDG_MODULE_ENABLED
#define HAL_I2C_MODULE_ENABLED
#define HAL_I2S_MODULE_ENABLED
#define HAL_LPTIM_MODULE_ENABLED
#define HAL_NAND_MODULE_ENABLED
#define HAL_NOR_MODULE_ENABLED
#define HAL_OPAMP_MODULE_ENABLED
#define HAL_PCD_MODULE_ENABLED
#define HAL_PWR_MODULE_ENABLED
#define HAL_QSPI_MODULE_ENABLED
#define HAL_RCC_MODULE_ENABLED
#define HAL_RNG_MODULE_ENABLED
#define HAL_RTC_MODULE_ENABLED
#define HAL_SAI_MODULE_ENABLED
#define HAL_SMARTCARD_MODULE_ENABLED
#define HAL_SMBUS_MODULE_ENABLED
#define HAL_SPI_MODULE_ENABLED
#define HAL_SRAM_MODULE_ENABLED
#define HAL_TIM_MODULE_ENABLED
#define HAL_UART_MODULE_ENABLED
#define HAL_USART_MODULE_ENABLED
#define HAL_WWDG_MODULE_ENABLED 
#endif

#if 0 means, that none of following #define for HAL-modules is used up to the #eindif?

For that file stm32yyxx_hal_conf.h \STMicroelectronics\hardware\stm32\2.7.1\cores\arduino\stm32 is the right path?

On my computer I see inside this file that on top at "Mandatory HAL modules" there is nothing for DAC and then below is a sequence:

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#if !defined(HAL_DAC_MODULE_DISABLED)
  /*#define HAL_DAC_MODULE_ENABLED*/
#else
  #undef HAL_DAC_MODULE_ENABLED
#endif

So I still don't know, my my sketch worked without a #define HAL_DAC_MODULE_ENABLED

Posted: **Mon Jul 08, 2024 11:56 am**

It is defined in the variant*.h of theboard.

Posted: **Mon Jul 08, 2024 12:11 pm**

Hmm ...

Exact name of the MCU is: STM32G431CBU6
So \variants\STM32G4xx\G431C(6-8-B)U_G441CBU is the correct path?

Inside variant_generic.h

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// Extra HAL modules
#if !defined(HAL_DAC_MODULE_DISABLED)
  #define HAL_DAC_MODULE_ENABLED
#endif

OK thanks.

There is also a file variant_B_G431B_ESC1.h, but it is only for MCUs STM32G431Bxx?
ESC = escape???

Posted: **Mon Jul 08, 2024 1:01 pm**

https://www.st.com/en/evaluation-tools/ ... -esc1.html

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