/* * This file is part of the libopencm3 project. * * Copyright (C) 2010 Gareth McMullin * * This library 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 . */ #include #include #include #include #include #include /* Define this to include the DFU APP interface. */ #define INCLUDE_DFU_INTERFACE #ifdef INCLUDE_DFU_INTERFACE #include #include #endif static usbd_device *usbd_dev; const struct usb_device_descriptor dev = { .bLength = USB_DT_DEVICE_SIZE, .bDescriptorType = USB_DT_DEVICE, .bcdUSB = 0x0200, .bDeviceClass = 0, .bDeviceSubClass = 0, .bDeviceProtocol = 0, .bMaxPacketSize0 = 64, .idVendor = 0x0483, .idProduct = 0x5710, .bcdDevice = 0x0200, .iManufacturer = 1, .iProduct = 2, .iSerialNumber = 3, .bNumConfigurations = 1, }; /* I have no idea what this means. I haven't read the HID spec. */ static const u8 hid_report_descriptor[] = { 0x05, 0x01, 0x09, 0x02, 0xA1, 0x01, 0x09, 0x01, 0xA1, 0x00, 0x05, 0x09, 0x19, 0x01, 0x29, 0x03, 0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 0x01, 0x81, 0x02, 0x95, 0x01, 0x75, 0x05, 0x81, 0x01, 0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 0x09, 0x38, 0x15, 0x81, 0x25, 0x7F, 0x75, 0x08, 0x95, 0x03, 0x81, 0x06, 0xC0, 0x09, 0x3c, 0x05, 0xff, 0x09, 0x01, 0x15, 0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x02, 0xb1, 0x22, 0x75, 0x06, 0x95, 0x01, 0xb1, 0x01, 0xc0, }; static const struct { struct usb_hid_descriptor hid_descriptor; struct { u8 bReportDescriptorType; u16 wDescriptorLength; } __attribute__((packed)) hid_report; } __attribute__((packed)) hid_function = { .hid_descriptor = { .bLength = sizeof(hid_function), .bDescriptorType = USB_DT_HID, .bcdHID = 0x0100, .bCountryCode = 0, .bNumDescriptors = 1, }, .hid_report = { .bReportDescriptorType = USB_DT_REPORT, .wDescriptorLength = sizeof(hid_report_descriptor), } }; const struct usb_endpoint_descriptor hid_endpoint = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = 0x81, .bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT, .wMaxPacketSize = 4, .bInterval = 0x20, }; const struct usb_interface_descriptor hid_iface = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, .bInterfaceNumber = 0, .bAlternateSetting = 0, .bNumEndpoints = 1, .bInterfaceClass = USB_CLASS_HID, .bInterfaceSubClass = 1, /* boot */ .bInterfaceProtocol = 2, /* mouse */ .iInterface = 0, .endpoint = &hid_endpoint, .extra = &hid_function, .extralen = sizeof(hid_function), }; #ifdef INCLUDE_DFU_INTERFACE const struct usb_dfu_descriptor dfu_function = { .bLength = sizeof(struct usb_dfu_descriptor), .bDescriptorType = DFU_FUNCTIONAL, .bmAttributes = USB_DFU_CAN_DOWNLOAD | USB_DFU_WILL_DETACH, .wDetachTimeout = 255, .wTransferSize = 1024, .bcdDFUVersion = 0x011A, }; const struct usb_interface_descriptor dfu_iface = { .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, .bInterfaceNumber = 1, .bAlternateSetting = 0, .bNumEndpoints = 0, .bInterfaceClass = 0xFE, .bInterfaceSubClass = 1, .bInterfaceProtocol = 1, .iInterface = 0, .extra = &dfu_function, .extralen = sizeof(dfu_function), }; #endif const struct usb_interface ifaces[] = {{ .num_altsetting = 1, .altsetting = &hid_iface, #ifdef INCLUDE_DFU_INTERFACE }, { .num_altsetting = 1, .altsetting = &dfu_iface, #endif }}; const struct usb_config_descriptor config = { .bLength = USB_DT_CONFIGURATION_SIZE, .bDescriptorType = USB_DT_CONFIGURATION, .wTotalLength = 0, #ifdef INCLUDE_DFU_INTERFACE .bNumInterfaces = 2, #else .bNumInterfaces = 1, #endif .bConfigurationValue = 1, .iConfiguration = 0, .bmAttributes = 0xC0, .bMaxPower = 0x32, .interface = ifaces, }; static const char *usb_strings[] = { "Black Sphere Technologies", "HID Demo", "DEMO", }; static int hid_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, u8 **buf, u16 *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req)) { (void)complete; (void)usbd_dev; if((req->bmRequestType != 0x81) || (req->bRequest != USB_REQ_GET_DESCRIPTOR) || (req->wValue != 0x2200)) return 0; /* Handle the HID report descriptor. */ *buf = (u8 *)hid_report_descriptor; *len = sizeof(hid_report_descriptor); return 1; } #ifdef INCLUDE_DFU_INTERFACE static void dfu_detach_complete(usbd_device *usbd_dev, struct usb_setup_data *req) { (void)req; (void)usbd_dev; gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO15); gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO10); gpio_set(GPIOA, GPIO10); scb_reset_core(); } static int dfu_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, u8 **buf, u16 *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req)) { (void)buf; (void)len; (void)usbd_dev; if ((req->bmRequestType != 0x21) || (req->bRequest != DFU_DETACH)) return 0; /* Only accept class request. */ *complete = dfu_detach_complete; return 1; } #endif static void hid_set_config(usbd_device *usbd_dev, u16 wValue) { (void)wValue; (void)usbd_dev; usbd_ep_setup(usbd_dev, 0x81, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL); usbd_register_control_callback( usbd_dev, USB_REQ_TYPE_STANDARD | USB_REQ_TYPE_INTERFACE, USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT, hid_control_request); #ifdef INCLUDE_DFU_INTERFACE usbd_register_control_callback( usbd_dev, USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE, USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT, dfu_control_request); #endif systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); systick_set_reload(100000); systick_interrupt_enable(); systick_counter_enable(); } int main(void) { rcc_clock_setup_in_hsi_out_48mhz(); rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN); AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_ON; gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO15); usbd_dev = usbd_init(&stm32f103_usb_driver, &dev, &config, usb_strings, 3); usbd_register_set_config_callback(usbd_dev, hid_set_config); gpio_set(GPIOA, GPIO15); gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO15); while (1) usbd_poll(usbd_dev); } void sys_tick_handler(void) { static int x = 0; static int dir = 1; u8 buf[4] = {0, 0, 0, 0}; buf[1] = dir; x += dir; if (x > 30) dir = -dir; if (x < -30) dir = -dir; usbd_ep_write_packet(usbd_dev, 0x81, buf, 4); }