Diff: USBHostBTstack/USBHostBTstack.cpp

Revision:

0:fccb789424fc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostBTstack/USBHostBTstack.cpp	Mon Jun 10 16:01:50 2013 +0000
@@ -0,0 +1,215 @@
+// USBHostBTstack.cpp
+#include "USBHostBTstack.h"
+#include "dbg.h"
+
+//#define BTSTACK_DEBUG
+
+#ifdef BTSTACK_DEBUG
+#define BT_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
+#define BT_DBG_BYTES(STR,BUF,LEN) _debug_bytes(__PRETTY_FUNCTION__,__LINE__,STR,BUF,LEN)
+#else
+#define BT_DBG(...)  while(0);
+#define BT_DBG_BYTES(S,BUF,LEN) while(0);
+#endif
+
+#define HCI_COMMAND_DATA_PACKET 0x01
+#define HCI_ACL_DATA_PACKET     0x02
+#define HCI_SCO_DATA_PACKET     0x03
+#define HCI_EVENT_PACKET        0x04
+
+USBHostBTstack::USBHostBTstack()
+{
+    host = USBHost::getHostInst();
+    init();
+    m_pCb = NULL;
+}
+
+void USBHostBTstack::init()
+{
+    BT_DBG("");
+    dev = NULL;
+    int_in = NULL;
+    bulk_in = NULL;
+    bulk_out = NULL;
+    btstack_intf = -1;
+    btstack_device_found = false;
+    dev_connected = false;
+    ep_int_in = false;
+    ep_bulk_in = false;
+    ep_bulk_out = false;
+}
+
+bool USBHostBTstack::connected()
+{
+    return dev_connected;
+}
+
+bool USBHostBTstack::connect()
+{
+    if (dev_connected) {
+        return true;
+    }
+
+    for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
+        if ((dev = host->getDevice(i)) != NULL) {
+            
+            BT_DBG("Trying to connect BTstack device\r\n");
+            
+            if(host->enumerate(dev, this)) {
+                break;
+            }
+            if (btstack_device_found) {
+                int_in = dev->getEndpoint(btstack_intf, INTERRUPT_ENDPOINT, IN);
+                bulk_in = dev->getEndpoint(btstack_intf, BULK_ENDPOINT, IN);
+                bulk_out = dev->getEndpoint(btstack_intf, BULK_ENDPOINT, OUT);
+                if (!int_in || !bulk_in || !bulk_out) {
+                    continue;
+                }
+                USB_INFO("New BTstack device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, btstack_intf);
+                dev->setName("BTstack", btstack_intf);
+                host->registerDriver(dev, btstack_intf, this, &USBHostBTstack::init);
+
+                int_in->attach(this, &USBHostBTstack::int_rxHandler);
+                host->interruptRead(dev, int_in, int_report, int_in->getSize(), false);
+
+                bulk_in->attach(this, &USBHostBTstack::bulk_rxHandler);
+                host->bulkRead(dev, bulk_in, bulk_report, bulk_in->getSize(), false);
+
+                dev_connected = true;
+                return true;
+            }
+        }
+    }
+    init();
+    return false;
+}
+
+void USBHostBTstack::int_rxHandler()
+{
+    int len = int_in->getLengthTransferred();
+    BT_DBG_BYTES("HCI_EVT:", int_report, len);
+    Packet* pkt = mail_box.alloc();
+    TEST_ASSERT(pkt);
+    pkt->type = HCI_EVENT_PACKET;
+    pkt->buf = int_report;
+    pkt->len = len;
+    mail_box.put(pkt);
+}
+
+void USBHostBTstack::bulk_rxHandler()
+{
+    int len = bulk_in->getLengthTransferred();
+    BT_DBG_BYTES("ACL_RCV:", bulk_report, len);
+    Packet* pkt = mail_box.alloc();
+    TEST_ASSERT(pkt);
+    pkt->type = HCI_ACL_DATA_PACKET;
+    pkt->buf = bulk_report;
+    pkt->len = len;
+    mail_box.put(pkt);
+}
+
+/*virtual*/ void USBHostBTstack::setVidPid(uint16_t vid, uint16_t pid)
+{
+    BT_DBG("vid:%04x,pid:%04x", vid, pid);
+}
+
+/*virtual*/ bool USBHostBTstack::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
+{
+    BT_DBG("intf_nb=%d,intf_class=%02X,intf_subclass=%d,intf_protocol=%d", intf_nb, intf_class, intf_subclass, intf_protocol);
+    if ((btstack_intf == -1) && intf_class == 0xe0) {
+        btstack_intf = intf_nb;
+        return true;
+    }
+    return false;
+}
+
+/*virtual*/ bool USBHostBTstack::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
+{
+    BT_DBG("intf_nb:%d,type:%d,dir:%d",intf_nb, type, dir);
+    if (intf_nb == btstack_intf) {
+        if (ep_int_in == false && type == INTERRUPT_ENDPOINT && dir == IN) {
+            ep_int_in = true;
+        } else if (ep_bulk_in == false && type == BULK_ENDPOINT && dir == IN) {
+            ep_bulk_in = true;
+        } else if (ep_bulk_out == false && type == BULK_ENDPOINT && dir == OUT) {
+            ep_bulk_out = true;
+        } else {
+            return false;
+        }
+        if (ep_int_in && ep_bulk_in && ep_bulk_out) {
+            btstack_device_found = true;
+        }
+        return true;
+    }
+    return false;
+}
+
+int USBHostBTstack::open()
+{
+    BT_DBG("%p", this);
+    while(!connected()) {
+        if (connect()) {
+            break;
+        }
+        Thread::wait(500);
+    }
+    return 0;
+}
+
+int USBHostBTstack::send_packet(uint8_t packet_type, uint8_t* packet, int size)
+{
+    USB_TYPE res;
+    switch(packet_type){
+        case HCI_COMMAND_DATA_PACKET:
+            BT_DBG_BYTES("HCI_CMD:", packet, size);
+            res = host->controlWrite(dev,
+                    USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_DEVICE, 
+                    0, 0, 0, packet, size);
+            TEST_ASSERT(res == USB_TYPE_OK);
+            break;
+        case HCI_ACL_DATA_PACKET:
+            BT_DBG_BYTES("ACL_SND:", packet, size);
+            res = host->bulkWrite(dev, bulk_out, packet, size);
+            TEST_ASSERT(res == USB_TYPE_OK);
+            break;
+        default:
+            TEST_ASSERT(0);
+    }
+    return 0;
+}
+
+void USBHostBTstack::register_packet_handler(void (*pMethod)(uint8_t, uint8_t*, uint16_t) )
+{
+    BT_DBG("pMethod: %p", pMethod);
+    m_pCb = pMethod;
+}
+
+void USBHostBTstack::poll()
+{
+    osEvent evt = mail_box.get(0); // non-blocking
+    if (evt.status == osEventMail) {
+        Packet* pkt = reinterpret_cast<Packet*>(evt.value.p);
+        TEST_ASSERT(pkt);
+        //BT_DBG("type: %d, buf: %p, len: %d", pkt->type, pkt->buf, pkt->len);
+        if (m_pCb) {
+            m_pCb(pkt->type, pkt->buf, pkt->len);
+        }
+        if (dev) {
+            if (pkt->type == HCI_EVENT_PACKET) { 
+                host->interruptRead(dev, int_in, int_report, int_in->getSize(), false);
+            } else { // HCI_ACL_DATA_PACKET
+                host->bulkRead(dev, bulk_in, bulk_report, bulk_in->getSize(), false);
+            }
+        }
+        mail_box.free(pkt);
+    }
+}
+
+void _debug_bytes(const char* pretty, int line, const char* s, uint8_t* buf, int len)
+{
+    printf("[%s:%d]\n%s", pretty, line, s);
+    for(int i = 0; i < len; i++) {
+        printf(" %02x", buf[i]);
+    }
+    printf("\n");
+}