1 files changed, 294 insertions, 0 deletions
diff --git a/src/usbh_driver_hid_mouse.c b/src/usbh_driver_hid_mouse.c
new file mode 100644
index 0000000..5c01451
--- /dev/null
+++ b/src/usbh_driver_hid_mouse.c
@@ -0,0 +1,294 @@
+/*
+ * This file is part of the libusbhost library
+ * hosted at http://github.com/libusbhost/libusbhost
+ *
+ * Copyright (C) 2015 Amir Hammad <amir.hammad@hotmail.com>
+ *
+ *
+ * libusbhost is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "usbh_hubbed.h"
+#include "driver/usbh_device_driver.h"
+#include "usbh_driver_hid_mouse.h"
+#include "usart_helpers.h"
+
+#include <libopencm3/usb/usbstd.h>
+
+static void *mouse_init(void *usbh_dev);
+static bool mouse_analyze_descriptor(void *drvdata, void *descriptor);
+static void mouse_poll(void *drvdata, uint32_t tflp);
+static void mouse_remove(void *drvdata);
+
+static const usbh_dev_driver_info_t usbh_hid_mouse_driver_info = {
+	.deviceClass = -1,
+	.deviceSubClass = -1,
+	.deviceProtocol = -1,
+	.idVendor = -1,
+	.idProduct = -1,
+	.ifaceClass = 0x03,
+	.ifaceSubClass = -1,
+	.ifaceProtocol = 0x02
+};
+
+const usbh_dev_driver_t usbh_hid_mouse_driver = {
+	.init = mouse_init,
+	.analyze_descriptor = mouse_analyze_descriptor,
+	.poll = mouse_poll,
+	.remove = mouse_remove,
+	.info = &usbh_hid_mouse_driver_info
+};
+
+enum STATES {
+	STATE_INACTIVE,
+	STATE_READING_COMPLETE,
+	STATE_READING_REQUEST,
+	STATE_SET_CONFIGURATION_REQUEST,
+	STATE_SET_CONFIGURATION_EMPTY_READ,
+	STATE_SET_CONFIGURATION_COMPLETE
+};
+
+struct _hid_mouse_device {
+	usbh_device_t *usbh_device;
+	uint8_t buffer[USBH_HID_MOUSE_BUFFER];
+	uint16_t endpoint_in_maxpacketsize;
+	uint8_t endpoint_in_address;
+	enum STATES state_next;
+	uint8_t endpoint_in_toggle;
+	uint8_t device_id;
+	uint8_t configuration_value;
+};
+typedef struct _hid_mouse_device hid_mouse_device_t;
+
+static hid_mouse_device_t mouse_device[USBH_HID_MOUSE_MAX_DEVICES];
+static const hid_mouse_config_t *mouse_config;
+
+
+
+
+#include <stdint.h>
+
+
+
+void hid_mouse_driver_init(const hid_mouse_config_t *config)
+{
+	uint32_t i;
+	mouse_config = config;
+	for (i = 0; i < USBH_HID_MOUSE_MAX_DEVICES; i++) {
+		mouse_device[i].state_next = STATE_INACTIVE;
+	}
+}
+
+/**
+ *
+ *
+ */
+static void *mouse_init(void *usbh_dev)
+{
+	uint32_t i;
+	hid_mouse_device_t *drvdata = 0;
+
+	// find free data space for mouse device
+	for (i = 0; i < USBH_HID_MOUSE_MAX_DEVICES; i++) {
+		if (mouse_device[i].state_next == STATE_INACTIVE) {
+			drvdata = &mouse_device[i];
+			drvdata->device_id = i;
+			drvdata->endpoint_in_address = 0;
+			drvdata->endpoint_in_toggle = 0;
+			drvdata->usbh_device = usbh_dev;
+			break;
+		}
+	}
+
+	return drvdata;
+}
+
+/**
+ * Returns true if all needed data are parsed
+ */
+static bool mouse_analyze_descriptor(void *drvdata, void *descriptor)
+{
+	hid_mouse_device_t *mouse = drvdata;
+	uint8_t desc_type = ((uint8_t *)descriptor)[1];
+	switch (desc_type) {
+	case USB_DT_CONFIGURATION:
+		{
+			struct usb_config_descriptor *cfg = (struct usb_config_descriptor*)descriptor;
+			mouse->configuration_value = cfg->bConfigurationValue;
+		}
+		break;
+	case USB_DT_DEVICE:
+		break;
+	case USB_DT_INTERFACE:
+		break;
+	case USB_DT_ENDPOINT:
+		{
+			struct usb_endpoint_descriptor *ep = (struct usb_endpoint_descriptor*)descriptor;
+			if ((ep->bmAttributes&0x03) == USB_ENDPOINT_ATTR_INTERRUPT) {
+				uint8_t epaddr = ep->bEndpointAddress;
+				if (epaddr & (1<<7)) {
+					mouse->endpoint_in_address = epaddr&0x7f;
+					if (ep->wMaxPacketSize < USBH_HID_MOUSE_BUFFER) {
+						mouse->endpoint_in_maxpacketsize = ep->wMaxPacketSize;
+					} else {
+						mouse->endpoint_in_maxpacketsize = USBH_HID_MOUSE_BUFFER;
+					}
+				}
+
+				if (mouse->endpoint_in_address) {
+					mouse->state_next = STATE_SET_CONFIGURATION_REQUEST;
+					return true;
+				}
+			}
+		}
+		break;
+	// TODO Class Specific descriptors
+	default:
+		break;
+	}
+	return false;
+}
+
+static void event(usbh_device_t *dev, usbh_packet_callback_data_t cb_data)
+{
+	hid_mouse_device_t *mouse = dev->drvdata;
+	switch (mouse->state_next) {
+	case STATE_READING_COMPLETE:
+		{
+			switch (cb_data.status) {
+			case USBH_PACKET_CALLBACK_STATUS_OK:
+			case USBH_PACKET_CALLBACK_STATUS_ERRSIZ:
+				mouse->state_next = STATE_READING_REQUEST;
+				break;
+
+			case USBH_PACKET_CALLBACK_STATUS_EFATAL:
+			case USBH_PACKET_CALLBACK_STATUS_EAGAIN:
+				ERROR(cb_data.status);
+				mouse->state_next = STATE_INACTIVE;
+				break;
+			}
+		}
+		break;
+
+	case STATE_SET_CONFIGURATION_EMPTY_READ:
+		{
+			LOG_PRINTF("|empty packet read|");
+			switch (cb_data.status) {
+			case USBH_PACKET_CALLBACK_STATUS_OK:
+				mouse->state_next++;
+				device_xfer_control_read(0, 0, event, dev);
+				break;
+
+			case USBH_PACKET_CALLBACK_STATUS_ERRSIZ:
+			case USBH_PACKET_CALLBACK_STATUS_EFATAL:
+			case USBH_PACKET_CALLBACK_STATUS_EAGAIN:
+				ERROR(cb_data.status);
+				mouse->state_next = STATE_INACTIVE;
+				break;
+			}
+		}
+		break;
+	case STATE_SET_CONFIGURATION_COMPLETE: // Configured
+		{
+			switch (cb_data.status) {
+			case USBH_PACKET_CALLBACK_STATUS_OK:
+				mouse->state_next = STATE_READING_REQUEST;
+				mouse->endpoint_in_toggle = 0;
+				LOG_PRINTF("\r\nMOUSE CONFIGURED\r\n");
+				break;
+
+			case USBH_PACKET_CALLBACK_STATUS_ERRSIZ:
+			case USBH_PACKET_CALLBACK_STATUS_EFATAL:
+			case USBH_PACKET_CALLBACK_STATUS_EAGAIN:
+				ERROR(cb_data.status);
+				mouse->state_next = STATE_INACTIVE;
+				break;
+			}
+		}
+		break;
+	default:
+		break;
+	}
+}
+
+
+static void read_mouse_in(void *drvdata)
+{
+	hid_mouse_device_t *mouse = drvdata;
+	usbh_packet_t packet;
+
+	packet.address = mouse->usbh_device->address;
+	packet.data = &mouse->buffer[0];
+	packet.datalen = mouse->endpoint_in_maxpacketsize;
+	packet.endpoint_address = mouse->endpoint_in_address;
+	packet.endpoint_size_max = mouse->endpoint_in_maxpacketsize;
+	packet.endpoint_type = USBH_EPTYP_BULK;
+	packet.speed = mouse->usbh_device->speed;
+	packet.callback = event;
+	packet.callback_arg = mouse->usbh_device;
+	packet.toggle = &mouse->endpoint_in_toggle;
+
+	mouse->state_next = STATE_READING_COMPLETE;
+	usbh_read(mouse->usbh_device, &packet);
+
+	// LOG_PRINTF("@MOUSE EP1 |  \r\n");
+
+}
+
+/**
+ *
+ *  tflp time from last poll [us]
+ */
+static void mouse_poll(void *drvdata, uint32_t tflp)
+{
+	(void)drvdata;
+	(void)tflp;
+	hid_mouse_device_t *mouse = drvdata;
+	usbh_device_t *dev = mouse->usbh_device;
+	switch (mouse->state_next) {
+	case STATE_READING_REQUEST:
+		{
+			read_mouse_in(drvdata);
+		}
+		break;
+
+	case STATE_SET_CONFIGURATION_REQUEST:
+		{
+			struct usb_setup_data setup_data;
+
+			setup_data.bmRequestType = 0b00000000;
+			setup_data.bRequest = USB_REQ_SET_CONFIGURATION;
+			setup_data.wValue = mouse->configuration_value;
+			setup_data.wIndex = 0;
+			setup_data.wLength = 0;
+
+			mouse->state_next++;
+
+			device_xfer_control_write(&setup_data, sizeof(setup_data), event, dev);
+		}
+		break;
+
+	default:
+		// do nothing - probably transfer is in progress
+		break;
+	}
+}
+
+static void mouse_remove(void *drvdata)
+{
+	hid_mouse_device_t *mouse = (hid_mouse_device_t *)drvdata;
+	mouse->state_next = STATE_INACTIVE;
+	mouse->endpoint_in_address = 0;
+}