STM32L4xx_HAL_Driver/Inc/stm32l4xx_hal_gpio_ex.h: GPIO_AF14_TIM2 missing for STM32L4P5xx || STM32L4Q5xx

[chrismas9]

Drivers/STM32L4xx_HAL_Driver/Inc/stm32l4xx_hal_gpio_ex.h Release v1.17.1

At line 787 under AF 14 selection there is no entry for TIM2 for the STM32L4P5 and STM32L4Q5. Every other L4 part in this file has #define GPIO_AF14_TIM2 ((uint8_t)0x0E) /* TIM2 Alternate Function mapping */ Accoding to the data sheet pin PA0, AF14 is TIM2_ETR. I have confirmed this in STM32CUBEMX by selecting this pin as external clock source. The sample code generated includes this in stm32l4xx_hal_msp.c, but there is no definition of GPIO_AF14_TIM2 in the HAL.

    /**TIM2 GPIO Configuration
    PA0     ------> TIM2_ETR
    */
    GPIO_InitStruct.Pin = GPIO_PIN_0;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF14_TIM2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

This problem was detected in MicroPython. I am currently porting all the STM32L4plus family to MicroPython and detected this because MicroPython enables all Timer pins and failed setting up PA0-TIM2_ETR.

L4P5.ioc attached demonstrates the problem. In the generated code GPIO_AF14_TIM2 is used , but never defined.

L4P5.zip

[ASELSTM]

Hi @chrismas9,

Thank you for this report. The issue you have pointed out is confirmed the GPIO_AF14_TIM2 is indeed missing and the fix is as you have mentioned.

/**
  * @brief   AF 14 selection
  */
+ #define GPIO_AF14_TIM2         ((uint8_t)0x0E)  /* TIM2 Alternate Function mapping   */
#define GPIO_AF14_TIM15        ((uint8_t)0x0E)  /* TIM15 Alternate Function mapping  */
#define GPIO_AF14_TIM16        ((uint8_t)0x0E)  /* TIM16 Alternate Function mapping  */
#define GPIO_AF14_TIM17        ((uint8_t)0x0E)  /* TIM17 Alternate Function mapping  */
#define GPIO_AF14_LPTIM2       ((uint8_t)0x0E)  /* LPTIM2 Alternate Function mapping */
#define GPIO_AF14_TIM8_COMP2   ((uint8_t)0x0E)  /* TIM8/COMP2 Break in Alternate Function mapping   */

The fix will be implemented and made available in a future release.

With regards,

[ASELSTM]

ST Internal Reference: 131716

[HBOSTM]

Hello @chrismas9

The fix you requested has been implemented and is now available in the frame of the latest stm32l4_hal_driver package V1.18.0 release. This issue can be closed now. Thank you again for your contribution.

Best Regards,