Diff: USBHost/USBEndpoint.cpp

Revision:

43:1675750cca08

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHost/USBEndpoint.cpp	Thu Jul 26 00:20:32 2018 +0000
@@ -0,0 +1,162 @@
+/* mbed USBHost Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include "dbg.h"
+#include "USBEndpoint.h"
+
+void USBEndpoint::init(HCED * hced_, ENDPOINT_TYPE type_, ENDPOINT_DIRECTION dir_, uint32_t size, uint8_t ep_number, HCTD* td_list_[2])
+{
+    hced = hced_;
+    type = type_;
+    dir = dir_;
+    setup = (type == CONTROL_ENDPOINT) ? true : false;
+
+    //TDs have been allocated by the host
+    memcpy((HCTD**)td_list, td_list_, sizeof(HCTD*)*2); //TODO: Maybe should add a param for td_list size... at least a define
+    memset(td_list_[0], 0, sizeof(HCTD));
+    memset(td_list_[1], 0, sizeof(HCTD));
+
+    td_list[0]->ep = this;
+    td_list[1]->ep = this;
+
+    hced->control = 0;
+    //Empty queue
+    hced->tailTD = td_list[0];
+    hced->headTD = td_list[0];
+    hced->nextED = 0;
+
+    address = (ep_number & 0x7F) | ((dir - 1) << 7);
+
+    hced->control = ((ep_number & 0x7F) << 7)                         // Endpoint address
+                    | (type != CONTROL_ENDPOINT ? ( dir << 11) : 0 )  // direction : Out = 1, 2 = In
+                    | ((size & 0x3ff) << 16);                         // MaxPkt Size
+
+    transfer_len = 0;
+    transferred = 0;
+    buf_start = 0;
+    nextEp = NULL;
+
+    td_current = td_list[0];
+    td_next = td_list[1];
+
+    intf_nb = 0;
+
+    state = USB_TYPE_IDLE;
+}
+
+void USBEndpoint::setSize(uint32_t size)
+{
+    hced->control &= ~(0x3ff << 16);
+    hced->control |= (size << 16);
+}
+
+
+void USBEndpoint::setDeviceAddress(uint8_t addr)
+{
+    hced->control &= ~(0x7f);
+    hced->control |= (addr & 0x7F);
+}
+
+void USBEndpoint::setSpeed(uint8_t speed)
+{
+    hced->control &= ~(1 << 13);
+    hced->control |= (speed << 13);
+}
+
+//Only for control Eps
+void USBEndpoint::setNextToken(uint32_t token)
+{
+    switch (token) {
+        case TD_SETUP:
+            dir = OUT;
+            setup = true;
+            break;
+        case TD_IN:
+            dir = IN;
+            setup = false;
+            break;
+        case TD_OUT:
+            dir = OUT;
+            setup = false;
+            break;
+    }
+}
+
+struct {
+    USB_TYPE type;
+    const char * str;
+} static type_string[] = {
+/*0*/   {USB_TYPE_OK, "USB_TYPE_OK"},
+        {USB_TYPE_CRC_ERROR, "USB_TYPE_CRC_ERROR"},
+        {USB_TYPE_BIT_STUFFING_ERROR, "USB_TYPE_BIT_STUFFING_ERROR"},
+        {USB_TYPE_DATA_TOGGLE_MISMATCH_ERROR, "USB_TYPE_DATA_TOGGLE_MISMATCH_ERROR"},
+        {USB_TYPE_STALL_ERROR, "USB_TYPE_STALL_ERROR"},
+/*5*/   {USB_TYPE_DEVICE_NOT_RESPONDING_ERROR, "USB_TYPE_DEVICE_NOT_RESPONDING_ERROR"},
+        {USB_TYPE_PID_CHECK_FAILURE_ERROR, "USB_TYPE_PID_CHECK_FAILURE_ERROR"},
+        {USB_TYPE_UNEXPECTED_PID_ERROR, "USB_TYPE_UNEXPECTED_PID_ERROR"},
+        {USB_TYPE_DATA_OVERRUN_ERROR, "USB_TYPE_DATA_OVERRUN_ERROR"},
+        {USB_TYPE_DATA_UNDERRUN_ERROR, "USB_TYPE_DATA_UNDERRUN_ERROR"},
+/*10*/  {USB_TYPE_ERROR, "USB_TYPE_ERROR"},
+        {USB_TYPE_ERROR, "USB_TYPE_ERROR"},
+        {USB_TYPE_BUFFER_OVERRUN_ERROR, "USB_TYPE_BUFFER_OVERRUN_ERROR"},
+        {USB_TYPE_BUFFER_UNDERRUN_ERROR, "USB_TYPE_BUFFER_UNDERRUN_ERROR"},
+        {USB_TYPE_DISCONNECTED, "USB_TYPE_DISCONNECTED"},
+/*15*/  {USB_TYPE_FREE, "USB_TYPE_FREE"},
+        {USB_TYPE_IDLE, "USB_TYPE_IDLE"},
+        {USB_TYPE_PROCESSING, "USB_TYPE_PROCESSING"},
+        {USB_TYPE_ERROR, "USB_TYPE_ERROR"}
+};
+
+void USBEndpoint::setState(uint8_t st) {
+    if (st > 18)
+        return;
+    state = type_string[st].type;
+}
+
+
+const char * USBEndpoint::getStateString() {
+    return type_string[state].str;
+}
+
+void USBEndpoint::queueTransfer()
+{
+    transfer_len = (uint32_t)td_current->bufEnd - (uint32_t)td_current->currBufPtr + 1;
+    transferred = transfer_len;
+    buf_start = (uint8_t *)td_current->currBufPtr;
+
+    //Now add this free TD at this end of the queue
+    state = USB_TYPE_PROCESSING;
+    td_current->nextTD = td_next;
+    hced->tailTD = td_next;
+}
+
+void USBEndpoint::unqueueTransfer(volatile HCTD * td)
+{
+    td->control=0;
+    td->currBufPtr=0;
+    td->bufEnd=0;
+    td->nextTD=0;
+    hced->headTD = (HCTD *)((uint32_t)hced->tailTD | ((uint32_t)hced->headTD & 0x2)); //Carry bit
+    td_current = td_next;
+    td_next = td;
+}
+
+void USBEndpoint::queueEndpoint(USBEndpoint * ed)
+{
+    nextEp = ed;
+    hced->nextED = (ed == NULL) ? 0 : ed->getHCED();
+}