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stm32/usb: Allocate 128 bytes to CDC data out EPs on non-multi-OTG MCUs. 

This much buffer space is required for CDC data out endpoints to avoid any
buffer overflows when the USB CDC is saturated with data.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2020-12-07 16:19:12 +11:00
parent f694a6fa20
commit f305c62a5f
1 changed files with 2 additions and 2 deletions
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4
ports/stm32/usb.c
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@ -102,8 +102,8 @@ STATIC const uint8_t usbd_fifo_size_cdc1[USBD_PMA_NUM_FIFO] = {
#if MICROPY_HW_USB_CDC_NUM >= 2
STATIC const uint8_t usbd_fifo_size_cdc2[USBD_PMA_NUM_FIFO] = {
8, 8, 16, 16, // EP0(out), EP0(in), MSC/HID(out), MSC/HID(in)
0, 8, 12, 12, // unused, CDC_CMD(in), CDC_DATA(out), CDC_DATA(in)
0, 8, 12, 12, // unused, CDC2_CMD(in), CDC2_DATA(out), CDC2_DATA(in)
0, 8, 16, 8, // unused, CDC_CMD(in), CDC_DATA(out), CDC_DATA(in)
0, 8, 16, 8, // unused, CDC2_CMD(in), CDC2_DATA(out), CDC2_DATA(in)
0, 0, 0, 0, // 4x unused
};