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96b_carbon: Updated the IRQ priority comment.

This commit is contained in:
Piotr Esden-Tempski 2022-06-03 20:20:47 -07:00
parent 1861ccd155
commit 2624960422
1 changed files with 3 additions and 2 deletions
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5
src/platforms/96b_carbon/platform.h
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@ -93,9 +93,10 @@
#define USB_DRIVER otgfs_usb_driver
#define USB_IRQ NVIC_OTG_FS_IRQ
#define USB_ISR otg_fs_isr
/* Interrupt priorities. Low numbers are high priority.
* For now USART preempts USB which may spin while buffer is drained.
/* Interrupt priorities. Low numbers are high priority.
* TIM3 is used for traceswo capture and must be highest priority.
* USBUSART can be lowest priority as it is using DMA to transfer
* data to the buffer and thus is less critical than USB.
*/
#define IRQ_PRI_USB (1 << 4)
#define IRQ_PRI_USBUSART (2 << 4)