usb RX_FIFO size: remove nonapplicable PMA comment

on F4 with the USB_OTG peripheral, the RX FIFO must be sized according
to different rules vs the USB_FS peripheral of the F0.
This commit is contained in:
fenugrec 2022-01-06 17:42:50 -05:00
parent c189c45c78
commit 1b1c3bb8ff

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@ -56,15 +56,7 @@ extern USBD_ClassTypeDef USBD_GS_CAN;
# define USB_INTERRUPT OTG_FS_IRQn
# define CAN_INTERFACE CAN1
# define CAN_CLOCK_SPEED 42000000
/*
* PMA layout
* 0x00 - 0x17 (24 bytes) metadata?
* 0x18 - 0x57 (64 bytes) EP0 OUT
* 0x58 - 0x97 (64 bytes) EP0 IN
* 0x98 - 0xD7 (64 bytes) EP1 IN
* 0xD8 - 0x157 (128 bytes) EP1 OUT (buffer 1)
* 0x158 - 0x1D7 (128 bytes) EP1 OUT (buffer 2)
*/
// RX FIFO is defined in words, so divide bytes by 4
// RX FIFO size chosen according to reference manual RM0368 which suggests
// using (largest packet size / 4) + 1