How to extract alternate function mappings from CubeMX's XML database files?

[ceremcem]

I'm using CubeMX's XML files as "Datasheets in database format" in my own "RTOS Hardware Configuration Tool". However, I couldn't find out how to extract the "Alternate Function Mapping" from those XML files:

The `mcu/config/llConfig/ADC-STM32F0xx_DefMapping.xml` is promising but I still couldn't figure out how to translate - eg. - `GPIO_AF2_TIM5` to anything.

Any ideas?

[TDK]

GPIO_AF2_TIM5 just expands to 2 through a define. Same as all other GPIO_AFx_* evaluating to x. The TIM5 part is just to make things a bit more readable. Is that what you're after?

#define GPIO_AF2_TIM3 ((uint8_t)0x02) /* TIM3 Alternate Function mapping */
#define GPIO_AF2_TIM4 ((uint8_t)0x02) /* TIM4 Alternate Function mapping */
#define GPIO_AF2_TIM5 ((uint8_t)0x02) /* TIM5 Alternate Function mapping */
#define GPIO_AF2_TIM12 ((uint8_t)0x02) /* TIM12 Alternate Function mapping */
#define GPIO_AF2_SAI1 ((uint8_t)0x02) /* SAI1 Alternate Function mapping */

[ceremcem]

For example, in order to configure STM32F030F4Px's PA3 as USART1_RX, I need to set the relevant Alternate Function nibble to "1", as stated in datasheet.

What I could get from mcu/config/llConfig/GPIO-STM32F0xx_DefMapping.xml is that there are 3 "Item"s containing search word "usart1":

* An item contains "GPIO_AF0_USART1" string

* An item contains "GPIO_AF1_USART1" string

* An item contains "GPIO_AF7_USART1" string

How would I know which Item to parse?

In the file mcu/IP/GPIO-STM32F031_gpio_v1_0_Modes.xml, there is a structured data at: IP.GPIO_Pin.9 indicating the following:

  

This allows me to conclude that I need to set AF1 in order to configure PA3 as USART1_RX. However, this information is inside a file named *STM32F031*.xml where I'm interested in STM32F030F4Px.

How can I know which "*Modes.xml" file applies to STM32F030F4Px?

[ceremcem]

Does the following information indicate that I need to refer to GPIO-STM32F031_gpio_v1_0_Modes.xml for STM32F030F4Px:

mcu/STM32F030F4Px.xml: <IP ConfigFile="GPIO-STM32F0xx" InstanceName="GPIO" Name="GPIO" Version="STM32F031_gpio_v1_0"/>

[Uwe Bonnes]

It is a long way to scan through the XML files. I do this in ethernut sourceforge svn head to produce headers like

#define I2C1_SCL_FUNC           3

#define I2C1_SDA_FUNC           4

...

       ((gpio == PA09) && (func == TIM1_CH2_FUNC           )) ? 1 : \

       ((gpio == PA09) && (func == I2C1_SCL_FUNC           )) ? 4 : \

       ((gpio == PA09) && (func == USART1_TX_FUNC          )) ? 7 : \

...

withe python script.

[ceremcem]

I don't get the idea here. Can you please describe the algorithm step by step?