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cpu/stm32: use largest number of available EPs

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Use the largest instead of the smallest number of available EPs for this definition. This became necessary to be able to use all EPs of a USB OTG HS peripheral if enabled.
This commit is contained in:
Gunar Schorcht 2023-03-16 07:21:17 +01:00
parent fd8182c09d
commit c3fb8ae97a
1 changed files with 9 additions and 6 deletions
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15
cpu/stm32/include/periph_cpu.h
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@ -154,14 +154,17 @@ typedef struct {
/**
* @brief Number of IN/OUT endpoints including EP0 as used by USBUS
*
* @note Since only a single number of EPs can be defined for USBUS that is
* valid for all devices, the smallest number of EPs must be used for
* multiple USB devices.
* @note USBUS allows only one definition of the number of available EPs, which
* is then used for all devices. To be able to use all EPs for devices
* with more EPs, the largest possible number of available EPs for
* several USB devices is defined here. The driver has to ensure that the
* number of allocated EPs does not exceed the number of available EPs if
* a device has less EPs.
*/
#if defined(STM32_USB_OTG_FS_NUM_EP)
#define USBDEV_NUM_ENDPOINTS STM32_USB_OTG_FS_NUM_EP
#elif defined(STM32_USB_OTG_HS_NUM_EP)
#if defined(MODULE_PERIPH_USBDEV_HS) && defined(STM32_USB_OTG_HS_NUM_EP)
#define USBDEV_NUM_ENDPOINTS STM32_USB_OTG_HS_NUM_EP
#elif defined(STM32_USB_OTG_FS_NUM_EP)
#define USBDEV_NUM_ENDPOINTS STM32_USB_OTG_FS_NUM_EP
#else
#define USBDEV_NUM_ENDPOINTS 8
#endif