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@@ -0,0 +1,639 @@
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+/*
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+ * The MIT License (MIT)
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+ *
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+ * Copyright (c) 2020 Peter Lawrence
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+ * THE SOFTWARE.
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+ *
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+ * This file is part of the TinyUSB stack.
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+ */
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+
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+/*
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+ Theory of operation:
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+
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+ The NUC505 USBD peripheral has twelve "EP"s, where each is simplex, in addition
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+ to dedicated support for the control endpoint (EP0). The non-user endpoints
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+ are referred to as "user" EPs in this code, and follow the datasheet
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+ nomenclature of EPA through EPL.
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+*/
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+
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+#include "tusb_option.h"
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+
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+#if TUSB_OPT_DEVICE_ENABLED && (CFG_TUSB_MCU == OPT_MCU_NUC505)
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+
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+#include "device/dcd.h"
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+#include "NUC505Series.h"
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+
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+/* rather important info unfortunately not provided by device include files */
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+#define USBD_BUF_SIZE 2048 /* how much USB buffer space there is */
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+#define USBD_MAX_DMA_LEN 0x1000 /* max bytes that can be DMAed at one time */
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+
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+enum ep_enum
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+{
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+ PERIPH_EPA = 0,
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+ PERIPH_EPB = 1,
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+ PERIPH_EPC = 2,
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+ PERIPH_EPD = 3,
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+ PERIPH_EPE = 4,
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+ PERIPH_EPF = 5,
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+ PERIPH_EPG = 6,
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+ PERIPH_EPH = 7,
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+ PERIPH_EPI = 8,
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+ PERIPH_EPJ = 9,
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+ PERIPH_EPK = 10,
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+ PERIPH_EPL = 11,
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+ PERIPH_MAX_EP,
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+};
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+
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+static const uint8_t epcfg_eptype_table[] =
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+{
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+ [TUSB_XFER_CONTROL] = 0, /* won't happen, since control EPs have dedicated registers */
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+ [TUSB_XFER_ISOCHRONOUS] = 3 << USBD_EPCFG_EPTYPE_Pos,
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+ [TUSB_XFER_BULK] = 1 << USBD_EPCFG_EPTYPE_Pos,
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+ [TUSB_XFER_INTERRUPT] = 2 << USBD_EPCFG_EPTYPE_Pos,
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+};
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+
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+static const uint8_t eprspctl_eptype_table[] =
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+{
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+ [TUSB_XFER_CONTROL] = 0, /* won't happen, since control EPs have dedicated registers */
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+ [TUSB_XFER_ISOCHRONOUS] = 2 << USBD_EPRSPCTL_MODE_Pos, /* Fly Mode */
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+ [TUSB_XFER_BULK] = 0 << USBD_EPRSPCTL_MODE_Pos, /* Auto-Validate Mode */
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+ [TUSB_XFER_INTERRUPT] = 1 << USBD_EPRSPCTL_MODE_Pos, /* Manual-Validate Mode */
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+};
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+
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+/* set by dcd_set_address() */
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+static volatile uint8_t assigned_address;
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+
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+/* reset by bus_reset(), this is used by dcd_edpt_open() to assign USBD peripheral buffer addresses */
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+static uint32_t bufseg_addr;
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+
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+/* RAM table needed to track ongoing transfers performed by dcd_edpt_xfer(), dcd_userEP_in_xfer(), and the ISR */
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+static struct xfer_ctl_t
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+{
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+ uint8_t *data_ptr; /* data_ptr tracks where to next copy data to (for OUT) or from (for IN) */
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+ union {
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+ uint16_t in_remaining_bytes; /* for IN endpoints, we track how many bytes are left to transfer */
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+ uint16_t out_bytes_so_far; /* but for OUT endpoints, we track how many bytes we've transferred so far */
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+ };
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+ uint16_t max_packet_size; /* needed since device driver only finds out this at runtime */
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+ uint16_t total_bytes; /* quantity needed to pass as argument to dcd_event_xfer_complete() (for IN endpoints) */
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+ uint8_t ep_addr;
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+ bool dma_requested;
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+} xfer_table[PERIPH_MAX_EP];
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+
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+/* in addition to xfer_table, additional bespoke bookkeeping is maintained for control EP0 IN */
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+static struct
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+{
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+ uint8_t *data_ptr;
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+ uint16_t in_remaining_bytes;
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+ uint16_t total_bytes;
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+} ctrl_in_xfer;
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+
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+static volatile bool configuration_changed;
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+
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+static volatile struct xfer_ctl_t *current_dma_xfer;
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+
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+
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+/*
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+ local helper functions
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+*/
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+
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+static void usb_attach(void)
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+{
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+ USBD->PHYCTL |= USBD_PHYCTL_DPPUEN_Msk;
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+}
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+
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+static void usb_control_send_zlp(void)
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+{
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+ USBD->CEPINTSTS = USBD_CEPINTSTS_STSDONEIF_Msk;
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+ USBD->CEPCTL = 0; /* clear NAKCLR bit */
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+ USBD->CEPINTEN = USBD_CEPINTEN_STSDONEIEN_Msk;
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+}
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+
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+/* map 8-bit ep_addr into peripheral endpoint index (PERIPH_EPA...) */
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+static USBD_EP_T *ep_entry(uint8_t ep_addr, bool add)
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+{
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+ USBD_EP_T *ep;
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+ enum ep_enum ep_index;
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+ struct xfer_ctl_t *xfer;
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+
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+ for (ep_index = PERIPH_EPA, xfer = &xfer_table[PERIPH_EPA], ep = USBD->EP; ep_index < PERIPH_MAX_EP; ep_index++, xfer++, ep++)
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+ {
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+ if (add)
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+ {
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+ /* take first peripheral endpoint that is unused */
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+ if (0 == (ep->EPCFG & USBD_EPCFG_EPEN_Msk)) return ep;
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+ }
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+ else
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+ {
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+ /* find a peripheral endpoint that matches ep_addr */
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+ if (xfer->ep_addr == ep_addr) return ep;
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+ }
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+ }
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+
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+ return NULL;
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+}
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+
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+/* perform a non-control IN endpoint transfer; this is called by the ISR */
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+static void dcd_userEP_in_xfer(struct xfer_ctl_t *xfer, USBD_EP_T *ep)
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+{
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+ uint16_t bytes_now = tu_min16(xfer->in_remaining_bytes, xfer->max_packet_size);
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+ uint16_t countdown = bytes_now;
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+
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+ /* precompute what amount of data will be left */
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+ xfer->in_remaining_bytes -= bytes_now;
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+
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+ /*
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+ if there will be no more data to send, we replace the BUFEMPTYIF EP interrupt with TXPKIF;
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+ that way, we alert TinyUSB as soon as this last packet has been sent
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+ */
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+ if (0 == xfer->in_remaining_bytes)
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+ {
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+ ep->EPINTSTS = USBD_EPINTSTS_TXPKIF_Msk;
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+ ep->EPINTEN = USBD_EPINTEN_TXPKIEN_Msk;
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+ }
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+
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+ /* provided buffers are thankfully 32-bit aligned, allowing most data to be transfered as 32-bit */
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+ while (countdown > 3)
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+ {
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+ ep->EPDAT = *(uint32_t *)xfer->data_ptr;
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+ xfer->data_ptr += 4; countdown -= 4;
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+ }
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+ while (countdown--)
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+ ep->EPDAT_BYTE = *xfer->data_ptr++;
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+
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+ /* for short packets, we must nudge the peripheral to say 'that's all folks' */
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+ if (bytes_now != xfer->max_packet_size)
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+ ep->EPRSPCTL = USBD_EPRSPCTL_SHORTTXEN_Msk;
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+}
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+
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+/* called by dcd_init() as well as by the ISR during a USB bus reset */
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+static void bus_reset(void)
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+{
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+ for (enum ep_enum ep_index = PERIPH_EPA; ep_index < PERIPH_MAX_EP; ep_index++)
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+ {
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+ USBD->EP[ep_index].EPCFG = 0;
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+ xfer_table[ep_index].dma_requested = false;
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+ }
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+
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+ USBD->DMACNT = 0;
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+ USBD->DMACTL = USBD_DMACTL_DMARST_Msk;
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+ USBD->DMACTL = 0;
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+
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+ /* allocate the default EP0 endpoints */
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+
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+ USBD->CEPBUFSTART = 0;
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+ USBD->CEPBUFEND = 0 + CFG_TUD_ENDPOINT0_SIZE - 1;
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+
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+ /* USB RAM beyond what we've allocated above is available to the user */
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+ bufseg_addr = CFG_TUD_ENDPOINT0_SIZE;
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+
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+ /* Reset USB device address */
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+ USBD->FADDR = 0;
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+
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+ configuration_changed = false;
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+ current_dma_xfer = NULL;
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+}
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+
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+/* this must only be called by the ISR; it does its best to share the single DMA engine across all user EPs (IN and OUT) */
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+static void service_dma(void)
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+{
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+ if (current_dma_xfer)
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+ return;
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+
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+ enum ep_enum ep_index;
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+ struct xfer_ctl_t *xfer;
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+ USBD_EP_T *ep;
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+
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+ for (ep_index = PERIPH_EPA, xfer = &xfer_table[PERIPH_EPA], ep = &USBD->EP[PERIPH_EPA]; ep_index < PERIPH_MAX_EP; ep_index++, xfer++, ep++)
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+ {
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+ uint16_t const available_bytes = ep->EPDATCNT & USBD_EPDATCNT_DATCNT_Msk;
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+
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+ if (!xfer->dma_requested || !available_bytes)
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+ continue;
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+
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+ /*
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+ instruct DMA to copy the data from the PC to the previously provided buffer
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+ when the bus interrupt DMADONEIEN subsequently fires, the transfer will have finished
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+ */
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+ USBD->DMACTL = xfer->ep_addr & USBD_DMACTL_EPNUM_Msk;
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+ USBD->DMAADDR = (uint32_t)xfer->data_ptr;
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+ USBD->DMACNT = available_bytes;
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+ USBD->BUSINTSTS = USBD_BUSINTSTS_DMADONEIF_Msk;
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+ xfer->out_bytes_so_far += available_bytes;
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+ current_dma_xfer = xfer;
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+ USBD->DMACTL |= USBD_DMACTL_DMAEN_Msk;
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+
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+ return;
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+ }
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+}
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+
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+/* centralized location for USBD interrupt enable bit masks */
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+static const uint32_t enabled_irqs = USBD_GINTEN_USBIEN_Msk | \
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+ USBD_GINTEN_EPAIEN_Msk | USBD_GINTEN_EPBIEN_Msk | USBD_GINTEN_EPCIEN_Msk | USBD_GINTEN_EPDIEN_Msk | USBD_GINTEN_EPEIEN_Msk | USBD_GINTEN_EPFIEN_Msk | \
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+ USBD_GINTEN_EPGIEN_Msk | USBD_GINTEN_EPHIEN_Msk | USBD_GINTEN_EPIIEN_Msk | USBD_GINTEN_EPJIEN_Msk | USBD_GINTEN_EPKIEN_Msk | USBD_GINTEN_EPLIEN_Msk | \
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+ USBD_GINTEN_CEPIEN_Msk;
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+
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+/*
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+ NUC505 TinyUSB API driver implementation
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+*/
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+
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+void dcd_init(uint8_t rhport)
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+{
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+ (void) rhport;
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+
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+ /* configure interrupts in their initial state; BUSINTEN and CEPINTEN will be subsequently and dynamically re-written as needed */
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+ USBD->GINTEN = enabled_irqs;
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+ USBD->BUSINTEN = USBD_BUSINTEN_RSTIEN_Msk | USBD_BUSINTEN_VBUSDETIEN_Msk | USBD_BUSINTEN_RESUMEIEN_Msk | USBD_BUSINTEN_DMADONEIEN_Msk;
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+ USBD->CEPINTEN = 0;
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+
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+ bus_reset();
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+
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+ usb_attach();
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+}
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+
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+void dcd_int_enable(uint8_t rhport)
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+{
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+ (void) rhport;
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+ NVIC_EnableIRQ(USBD_IRQn);
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+}
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+
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+void dcd_int_disable(uint8_t rhport)
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+{
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+ (void) rhport;
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+ NVIC_DisableIRQ(USBD_IRQn);
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+}
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+
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+void dcd_set_address(uint8_t rhport, uint8_t dev_addr)
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+{
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+ (void) rhport;
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+ usb_control_send_zlp(); /* SET_ADDRESS is the one exception where TinyUSB doesn't use dcd_edpt_xfer() to generate a ZLP */
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+ assigned_address = dev_addr;
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+}
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+
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+void dcd_set_config(uint8_t rhport, uint8_t config_num)
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+{
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+ (void) rhport;
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+ (void) config_num;
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+ configuration_changed = true;
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+}
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+
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+void dcd_remote_wakeup(uint8_t rhport)
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+{
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+ (void) rhport;
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+ USBD->OPER |= USBD_OPER_RESUMEEN_Msk;
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+}
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+
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+bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc)
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+{
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+ (void) rhport;
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+
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+ USBD_EP_T *ep = ep_entry(p_endpoint_desc->bEndpointAddress, true);
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+ TU_ASSERT(ep);
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+
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+ /* mine the data for the information we need */
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+ int const dir = tu_edpt_dir(p_endpoint_desc->bEndpointAddress);
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+ int const size = p_endpoint_desc->wMaxPacketSize.size;
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+ tusb_xfer_type_t const type = p_endpoint_desc->bmAttributes.xfer;
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+ struct xfer_ctl_t *xfer = &xfer_table[ep - USBD->EP];
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+
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+ /* allocate buffer from USB RAM */
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+ ep->EPBUFSTART = bufseg_addr;
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+ bufseg_addr += size;
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+ ep->EPBUFEND = bufseg_addr - 1;
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+ TU_ASSERT(bufseg_addr <= USBD_BUF_SIZE);
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+
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+ ep->EPMPS = size;
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+
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+ ep->EPRSPCTL = USB_EP_RSPCTL_FLUSH | eprspctl_eptype_table[type];
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+
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+ /* construct USB Configuration Register value and then write it */
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+ uint32_t cfg = (uint32_t)tu_edpt_number(p_endpoint_desc->bEndpointAddress) << USBD_EPCFG_EPNUM_Pos;
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+ if (TUSB_DIR_IN == dir)
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+ cfg |= USBD_EPCFG_EPDIR_Msk;
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+ cfg |= epcfg_eptype_table[type] | USBD_EPCFG_EPEN_Msk;
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+ ep->EPCFG = cfg;
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+
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+ /* make a note of the endpoint particulars */
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+ xfer->max_packet_size = size;
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+ xfer->ep_addr = p_endpoint_desc->bEndpointAddress;
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+
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+ return true;
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+}
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+
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+bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t *buffer, uint16_t total_bytes)
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+{
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+ (void) rhport;
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+
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+ if (0x80 == ep_addr) /* control EP0 IN */
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+ {
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+ if (total_bytes)
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+ {
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+ USBD->CEPCTL = USBD_CEPCTL_FLUSH_Msk;
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+ ctrl_in_xfer.data_ptr = buffer;
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+ ctrl_in_xfer.in_remaining_bytes = total_bytes;
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+ ctrl_in_xfer.total_bytes = total_bytes;
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+ USBD->CEPINTSTS = USBD_CEPINTSTS_INTKIF_Msk;
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+ USBD->CEPINTEN = USBD_CEPINTEN_INTKIEN_Msk;
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+ }
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+ else
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+ {
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+ usb_control_send_zlp();
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+ }
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+ }
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+ else if (0x00 == ep_addr) /* control EP0 OUT */
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+ {
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+ if (total_bytes)
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+ {
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+ /* if TinyUSB is asking for EP0 OUT data, it is almost certainly already in the buffer */
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+ while (total_bytes < USBD->CEPRXCNT);
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+ for (int count = 0; count < total_bytes; count++)
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+ *buffer++ = USBD->CEPDAT_BYTE;
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|
|
+
|
|
|
+ usb_control_send_zlp();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ /* mine the data for the information we need */
|
|
|
+ tusb_dir_t dir = tu_edpt_dir(ep_addr);
|
|
|
+ USBD_EP_T *ep = ep_entry(ep_addr, false);
|
|
|
+ struct xfer_ctl_t *xfer = &xfer_table[ep - USBD->EP];
|
|
|
+
|
|
|
+ /* store away the information we'll needing now and later */
|
|
|
+ xfer->data_ptr = buffer;
|
|
|
+ xfer->in_remaining_bytes = total_bytes;
|
|
|
+ xfer->total_bytes = total_bytes;
|
|
|
+
|
|
|
+ if (TUSB_DIR_IN == dir)
|
|
|
+ {
|
|
|
+ ep->EPINTEN = USBD_EPINTEN_BUFEMPTYIEN_Msk;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ xfer->out_bytes_so_far = 0;
|
|
|
+ ep->EPINTEN = USBD_EPINTEN_RXPKIEN_Msk;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return true;
|
|
|
+}
|
|
|
+
|
|
|
+void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
|
|
|
+{
|
|
|
+ (void) rhport;
|
|
|
+
|
|
|
+ if (tu_edpt_number(ep_addr))
|
|
|
+ {
|
|
|
+ USBD_EP_T *ep = ep_entry(ep_addr, false);
|
|
|
+ ep->EPRSPCTL = (ep->EPRSPCTL & 0xf7) | USBD_EPRSPCTL_HALT_Msk;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ USBD->CEPCTL = USBD_CEPCTL_STALLEN_Msk;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
|
|
|
+{
|
|
|
+ (void) rhport;
|
|
|
+
|
|
|
+ if (tu_edpt_number(ep_addr))
|
|
|
+ {
|
|
|
+ USBD_EP_T *ep = ep_entry(ep_addr, false);
|
|
|
+ ep->EPRSPCTL = USBD_EPRSPCTL_TOGGLE_Msk;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void USBD_IRQHandler(void)
|
|
|
+{
|
|
|
+ uint32_t status = USBD->GINTSTS;
|
|
|
+
|
|
|
+ /* USB interrupt */
|
|
|
+ if (status & USBD_GINTSTS_USBIF_Msk)
|
|
|
+ {
|
|
|
+ uint32_t bus_state = USBD->BUSINTSTS;
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_SOFIF_Msk)
|
|
|
+ {
|
|
|
+ /* Start-Of-Frame event */
|
|
|
+ dcd_event_bus_signal(0, DCD_EVENT_SOF, true);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_RSTIF_Msk)
|
|
|
+ {
|
|
|
+ bus_reset();
|
|
|
+
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_SETUPPKIEN_Msk;
|
|
|
+ USBD->BUSINTEN = USBD_BUSINTEN_RSTIEN_Msk | USBD_BUSINTEN_RESUMEIEN_Msk | USBD_BUSINTEN_SUSPENDIEN_Msk | USBD_BUSINTEN_DMADONEIEN_Msk;
|
|
|
+ USBD->CEPINTSTS = 0x1ffc;
|
|
|
+ dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_RESUMEIF_Msk)
|
|
|
+ {
|
|
|
+ USBD->BUSINTEN = USBD_BUSINTEN_RSTIEN_Msk | USBD_BUSINTEN_SUSPENDIEN_Msk | USBD_BUSINTEN_DMADONEIEN_Msk;
|
|
|
+ dcd_event_bus_signal(0, DCD_EVENT_RESUME, true);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_SUSPENDIF_Msk)
|
|
|
+ {
|
|
|
+ USBD->BUSINTEN = USBD_BUSINTEN_RSTIEN_Msk | USBD_BUSINTEN_RESUMEIEN_Msk | USBD_BUSINTEN_DMADONEIEN_Msk;
|
|
|
+ dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_HISPDIF_Msk)
|
|
|
+ {
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_SETUPPKIEN_Msk;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_DMADONEIF_Msk)
|
|
|
+ {
|
|
|
+ if (current_dma_xfer)
|
|
|
+ {
|
|
|
+ current_dma_xfer->dma_requested = false;
|
|
|
+
|
|
|
+ uint16_t available_bytes = USBD->DMACNT & USBD_DMACNT_DMACNT_Msk;
|
|
|
+
|
|
|
+ /* if the most recent DMA finishes the transfer, alert TinyUSB; otherwise, the next RXPKIF/INTKIF endpoint interrupt will prompt the next DMA */
|
|
|
+ if ( (current_dma_xfer->total_bytes == current_dma_xfer->out_bytes_so_far) || (available_bytes < current_dma_xfer->max_packet_size) )
|
|
|
+ {
|
|
|
+ dcd_event_xfer_complete(0, current_dma_xfer->ep_addr, current_dma_xfer->out_bytes_so_far, XFER_RESULT_SUCCESS, true);
|
|
|
+ }
|
|
|
+
|
|
|
+ current_dma_xfer = NULL;
|
|
|
+ service_dma();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (bus_state & USBD_BUSINTSTS_VBUSDETIF_Msk)
|
|
|
+ {
|
|
|
+ if (USBD->PHYCTL & USBD_PHYCTL_VBUSDET_Msk)
|
|
|
+ {
|
|
|
+ /* USB connect */
|
|
|
+ USBD->PHYCTL |= USBD_PHYCTL_PHYEN_Msk | USBD_PHYCTL_DPPUEN_Msk;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ /* USB disconnect */
|
|
|
+ USBD->PHYCTL &= ~USBD_PHYCTL_DPPUEN_Msk;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ USBD->BUSINTSTS = bus_state & (USBD_BUSINTSTS_SOFIF_Msk | USBD_BUSINTSTS_RSTIF_Msk | USBD_BUSINTSTS_RESUMEIF_Msk | USBD_BUSINTSTS_SUSPENDIF_Msk | USBD_BUSINTSTS_HISPDIF_Msk | USBD_BUSINTSTS_DMADONEIF_Msk | USBD_BUSINTSTS_PHYCLKVLDIF_Msk | USBD_BUSINTSTS_VBUSDETIF_Msk);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (status & USBD_GINTSTS_CEPIF_Msk)
|
|
|
+ {
|
|
|
+ uint32_t cep_state = USBD->CEPINTSTS & USBD->CEPINTEN;
|
|
|
+
|
|
|
+ if (cep_state & USBD_CEPINTSTS_SETUPPKIF_Msk)
|
|
|
+ {
|
|
|
+ /* get SETUP packet from USB buffer */
|
|
|
+ uint8_t setup_packet[8];
|
|
|
+ setup_packet[0] = (uint8_t)(USBD->SETUP1_0 >> 0);
|
|
|
+ setup_packet[1] = (uint8_t)(USBD->SETUP1_0 >> 8);
|
|
|
+ setup_packet[2] = (uint8_t)(USBD->SETUP3_2 >> 0);
|
|
|
+ setup_packet[3] = (uint8_t)(USBD->SETUP3_2 >> 8);
|
|
|
+ setup_packet[4] = (uint8_t)(USBD->SETUP5_4 >> 0);
|
|
|
+ setup_packet[5] = (uint8_t)(USBD->SETUP5_4 >> 8);
|
|
|
+ setup_packet[6] = (uint8_t)(USBD->SETUP7_6 >> 0);
|
|
|
+ setup_packet[7] = (uint8_t)(USBD->SETUP7_6 >> 8);
|
|
|
+ dcd_event_setup_received(0, setup_packet, true);
|
|
|
+ }
|
|
|
+ else if (cep_state & USBD_CEPINTSTS_INTKIF_Msk)
|
|
|
+ {
|
|
|
+ USBD->CEPINTSTS = USBD_CEPINTSTS_TXPKIF_Msk;
|
|
|
+
|
|
|
+ if (!(cep_state & USBD_CEPINTSTS_STSDONEIF_Msk))
|
|
|
+ {
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_TXPKIEN_Msk;
|
|
|
+ uint16_t bytes_now = tu_min16(ctrl_in_xfer.in_remaining_bytes, CFG_TUD_ENDPOINT0_SIZE);
|
|
|
+ for (int count = 0; count < bytes_now; count++)
|
|
|
+ USBD->CEPDAT_BYTE = *ctrl_in_xfer.data_ptr++;
|
|
|
+ ctrl_in_xfer.in_remaining_bytes -= bytes_now;
|
|
|
+ USBD_START_CEP_IN(bytes_now);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_TXPKIEN_Msk | USBD_CEPINTEN_STSDONEIEN_Msk;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else if (cep_state & USBD_CEPINTSTS_TXPKIF_Msk)
|
|
|
+ {
|
|
|
+ USBD->CEPINTSTS = USBD_CEPINTSTS_STSDONEIF_Msk;
|
|
|
+ USBD_SET_CEP_STATE(USB_CEPCTL_NAKCLR);
|
|
|
+
|
|
|
+ /* alert TinyUSB that the EP0 IN transfer has finished */
|
|
|
+ if ( (0 == ctrl_in_xfer.in_remaining_bytes) || (0 == ctrl_in_xfer.total_bytes) )
|
|
|
+ dcd_event_xfer_complete(0, 0x80, ctrl_in_xfer.total_bytes, XFER_RESULT_SUCCESS, true);
|
|
|
+
|
|
|
+ if (ctrl_in_xfer.in_remaining_bytes)
|
|
|
+ {
|
|
|
+ USBD->CEPINTSTS = USBD_CEPINTSTS_INTKIF_Msk;
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_INTKIEN_Msk;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ /* TinyUSB does its own fragmentation and ZLP for EP0; a transfer of zero means a ZLP */
|
|
|
+ if (0 == ctrl_in_xfer.total_bytes) USBD->CEPCTL = USBD_CEPCTL_ZEROLEN_Msk;
|
|
|
+
|
|
|
+ USBD->CEPINTSTS = USBD_CEPINTSTS_STSDONEIF_Msk;
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_SETUPPKIEN_Msk | USBD_CEPINTEN_STSDONEIEN_Msk;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else if (cep_state & USBD_CEPINTSTS_STSDONEIF_Msk)
|
|
|
+ {
|
|
|
+ /* given ACK from host has happened, we can now set the address (if not already done) */
|
|
|
+ if((USBD->FADDR != assigned_address) && (USBD->FADDR == 0)) USBD->FADDR = assigned_address;
|
|
|
+
|
|
|
+ if (configuration_changed)
|
|
|
+ {
|
|
|
+ for (enum ep_enum ep_index = PERIPH_EPA; ep_index < PERIPH_MAX_EP; ep_index++)
|
|
|
+ {
|
|
|
+ if (USBD->EP[ep_index].EPCFG & USBD_EPCFG_EPEN_Msk) USBD->EP[ep_index].EPRSPCTL = USBD_EPRSPCTL_TOGGLE_Msk;
|
|
|
+ }
|
|
|
+ configuration_changed = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ USBD->CEPINTEN = USBD_CEPINTEN_SETUPPKIEN_Msk;
|
|
|
+ }
|
|
|
+
|
|
|
+ USBD->CEPINTSTS = cep_state;
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (status & (USBD_GINTSTS_EPAIF_Msk | USBD_GINTSTS_EPBIF_Msk | USBD_GINTSTS_EPCIF_Msk | USBD_GINTSTS_EPDIF_Msk | USBD_GINTSTS_EPEIF_Msk | USBD_GINTSTS_EPFIF_Msk | USBD_GINTSTS_EPGIF_Msk | USBD_GINTSTS_EPHIF_Msk | USBD_GINTSTS_EPIIF_Msk | USBD_GINTSTS_EPJIF_Msk | USBD_GINTSTS_EPKIF_Msk | USBD_GINTSTS_EPLIF_Msk))
|
|
|
+ {
|
|
|
+ /* service PERIPH_EPA through PERIPH_EPL */
|
|
|
+ enum ep_enum ep_index;
|
|
|
+ uint32_t mask;
|
|
|
+ struct xfer_ctl_t *xfer;
|
|
|
+ USBD_EP_T *ep;
|
|
|
+ for (ep_index = PERIPH_EPA, mask = USBD_GINTSTS_EPAIF_Msk, xfer = &xfer_table[PERIPH_EPA], ep = &USBD->EP[PERIPH_EPA]; ep_index < PERIPH_MAX_EP; ep_index++, mask <<= 1, xfer++, ep++)
|
|
|
+ {
|
|
|
+ if(status & mask)
|
|
|
+ {
|
|
|
+ uint8_t const ep_addr = xfer->ep_addr;
|
|
|
+ bool const out_ep = !(ep_addr & TUSB_DIR_IN_MASK);
|
|
|
+ uint32_t ep_state = ep->EPINTSTS & ep->EPINTEN;
|
|
|
+
|
|
|
+ if (out_ep)
|
|
|
+ {
|
|
|
+#if 1
|
|
|
+ xfer->dma_requested = true;
|
|
|
+ service_dma();
|
|
|
+#else
|
|
|
+ uint16_t const available_bytes = ep->EPDATCNT & USBD_EPDATCNT_DATCNT_Msk;
|
|
|
+ /* copy the data from the PC to the previously provided buffer */
|
|
|
+ for (int count = 0; (count < available_bytes) && (xfer->out_bytes_so_far < xfer->total_bytes); count++, xfer->out_bytes_so_far++)
|
|
|
+ *xfer->data_ptr++ = ep->EPDAT_BYTE;
|
|
|
+
|
|
|
+ /* when the transfer is finished, alert TinyUSB; otherwise, continue accepting more data */
|
|
|
+ if ( (xfer->total_bytes == xfer->out_bytes_so_far) || (available_bytes < xfer->max_packet_size) )
|
|
|
+ dcd_event_xfer_complete(0, ep_addr, xfer->out_bytes_so_far, XFER_RESULT_SUCCESS, true);
|
|
|
+#endif
|
|
|
+
|
|
|
+ }
|
|
|
+ else if (ep_state & USBD_EPINTSTS_BUFEMPTYIF_Msk)
|
|
|
+ {
|
|
|
+ /* send any remaining data */
|
|
|
+ dcd_userEP_in_xfer(xfer, ep);
|
|
|
+ }
|
|
|
+ else if (ep_state & USBD_EPINTSTS_TXPKIF_Msk)
|
|
|
+ {
|
|
|
+ /* alert TinyUSB that we've finished */
|
|
|
+ dcd_event_xfer_complete(0, ep_addr, xfer->total_bytes, XFER_RESULT_SUCCESS, true);
|
|
|
+ ep->EPINTEN = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ ep->EPINTSTS = ep_state;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+void dcd_isr(uint8_t rhport)
|
|
|
+{
|
|
|
+ (void) rhport;
|
|
|
+ USBD_IRQHandler();
|
|
|
+}
|
|
|
+
|
|
|
+#endif
|
Ha Thach