diff options
Diffstat (limited to 'tinyusb/examples/device/cdc_msc/src/usb_descriptors.c')
-rwxr-xr-x | tinyusb/examples/device/cdc_msc/src/usb_descriptors.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/tinyusb/examples/device/cdc_msc/src/usb_descriptors.c b/tinyusb/examples/device/cdc_msc/src/usb_descriptors.c new file mode 100755 index 00000000..1a89ce56 --- /dev/null +++ b/tinyusb/examples/device/cdc_msc/src/usb_descriptors.c @@ -0,0 +1,224 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (tinyusb.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + */ + +#include "tusb.h" + +/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug. + * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC. + * + * Auto ProductID layout's Bitmap: + * [MSB] HID | MSC | CDC [LSB] + */ +#define _PID_MAP(itf, n) ( (CFG_TUD_##itf) << (n) ) +#define USB_PID (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \ + _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) ) + +//--------------------------------------------------------------------+ +// Device Descriptors +//--------------------------------------------------------------------+ +tusb_desc_device_t const desc_device = +{ + .bLength = sizeof(tusb_desc_device_t), + .bDescriptorType = TUSB_DESC_DEVICE, + .bcdUSB = 0x0200, + + // Use Interface Association Descriptor (IAD) for CDC + // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1) + .bDeviceClass = TUSB_CLASS_MISC, + .bDeviceSubClass = MISC_SUBCLASS_COMMON, + .bDeviceProtocol = MISC_PROTOCOL_IAD, + + .bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE, + + .idVendor = 0xCafe, + .idProduct = USB_PID, + .bcdDevice = 0x0100, + + .iManufacturer = 0x01, + .iProduct = 0x02, + .iSerialNumber = 0x03, + + .bNumConfigurations = 0x01 +}; + +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void) +{ + return (uint8_t const *) &desc_device; +} + +//--------------------------------------------------------------------+ +// Configuration Descriptor +//--------------------------------------------------------------------+ + +enum +{ + ITF_NUM_CDC = 0, + ITF_NUM_CDC_DATA, + ITF_NUM_MSC, + ITF_NUM_TOTAL +}; + +#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_MSC_DESC_LEN) + +#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX + // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number + // 0 control, 1 In, 2 Bulk, 3 Iso, 4 In, 5 Bulk etc ... + #define EPNUM_CDC_NOTIF 0x81 + #define EPNUM_CDC_OUT 0x02 + #define EPNUM_CDC_IN 0x82 + + #define EPNUM_MSC_OUT 0x05 + #define EPNUM_MSC_IN 0x85 + +#elif CFG_TUSB_MCU == OPT_MCU_SAMG || CFG_TUSB_MCU == OPT_MCU_SAMX7X + // SAMG & SAME70 don't support a same endpoint number with different direction IN and OUT + // e.g EP1 OUT & EP1 IN cannot exist together + #define EPNUM_CDC_NOTIF 0x81 + #define EPNUM_CDC_OUT 0x02 + #define EPNUM_CDC_IN 0x83 + + #define EPNUM_MSC_OUT 0x04 + #define EPNUM_MSC_IN 0x85 + +#elif CFG_TUSB_MCU == OPT_MCU_CXD56 + // CXD56 doesn't support a same endpoint number with different direction IN and OUT + // e.g EP1 OUT & EP1 IN cannot exist together + // CXD56 USB driver has fixed endpoint type (bulk/interrupt/iso) and direction (IN/OUT) by its number + // 0 control (IN/OUT), 1 Bulk (IN), 2 Bulk (OUT), 3 In (IN), 4 Bulk (IN), 5 Bulk (OUT), 6 In (IN) + #define EPNUM_CDC_NOTIF 0x83 + #define EPNUM_CDC_OUT 0x02 + #define EPNUM_CDC_IN 0x81 + + #define EPNUM_MSC_OUT 0x05 + #define EPNUM_MSC_IN 0x84 + +#else + #define EPNUM_CDC_NOTIF 0x81 + #define EPNUM_CDC_OUT 0x02 + #define EPNUM_CDC_IN 0x82 + + #define EPNUM_MSC_OUT 0x03 + #define EPNUM_MSC_IN 0x83 + +#endif + +uint8_t const desc_fs_configuration[] = +{ + // Config number, interface count, string index, total length, attribute, power in mA + TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100), + + // Interface number, string index, EP notification address and size, EP data address (out, in) and size. + TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64), + + // Interface number, string index, EP Out & EP In address, EP size + TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 5, EPNUM_MSC_OUT, EPNUM_MSC_IN, 64), +}; + +#if TUD_OPT_HIGH_SPEED +uint8_t const desc_hs_configuration[] = +{ + // Config number, interface count, string index, total length, attribute, power in mA + TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100), + + // Interface number, string index, EP notification address and size, EP data address (out, in) and size. + TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 512), + + // Interface number, string index, EP Out & EP In address, EP size + TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 5, EPNUM_MSC_OUT, EPNUM_MSC_IN, 512), +}; +#endif + + +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(uint8_t index) +{ + (void) index; // for multiple configurations + +#if TUD_OPT_HIGH_SPEED + // Although we are highspeed, host may be fullspeed. + return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_hs_configuration : desc_fs_configuration; +#else + return desc_fs_configuration; +#endif +} + +//--------------------------------------------------------------------+ +// String Descriptors +//--------------------------------------------------------------------+ + +// array of pointer to string descriptors +char const* string_desc_arr [] = +{ + (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409) + "TinyUSB", // 1: Manufacturer + "TinyUSB Device", // 2: Product + "123456", // 3: Serials, should use chip ID + "TinyUSB CDC", // 4: CDC Interface + "TinyUSB MSC", // 5: MSC Interface +}; + +static uint16_t _desc_str[32]; + +// Invoked when received GET STRING DESCRIPTOR request +// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete +uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid) +{ + (void) langid; + + uint8_t chr_count; + + if ( index == 0) + { + memcpy(&_desc_str[1], string_desc_arr[0], 2); + chr_count = 1; + }else + { + // Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors. + // https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors + + if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL; + + const char* str = string_desc_arr[index]; + + // Cap at max char + chr_count = strlen(str); + if ( chr_count > 31 ) chr_count = 31; + + // Convert ASCII string into UTF-16 + for(uint8_t i=0; i<chr_count; i++) + { + _desc_str[1+i] = str[i]; + } + } + + // first byte is length (including header), second byte is string type + _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2); + + return _desc_str; +} |