usb_dfu: add serial to USB strings
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@ -13,9 +13,9 @@
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*
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*/
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/** library for USB DFU to write on internal flash (code)
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* @file usb_dfu.c
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* @file
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* @author King Kévin <kingkevin@cuvoodoo.info>
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* @date 2017
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* @date 2017-2019
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*/
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/* standard libraries */
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@ -60,7 +60,7 @@ static const struct usb_device_descriptor usb_dfu_device = {
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.bcdDevice = 0x0000, /**< Device Release Number: board version number */
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.iManufacturer = 1, /**< the index of the string in the string table that represents the name of the manufacturer of this device */
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.iProduct = 2, /**< the index of the string in the string table that represents the name of the product */
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.iSerialNumber = 0, /**< the index of the string in the string table that represents the serial number of this item in string form */
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.iSerialNumber = 3, /**< the index of the string in the string table that represents the serial number of this item in string form */
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.bNumConfigurations = 1, /**< the number of possible configurations this device has */
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};
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@ -88,7 +88,7 @@ static const struct usb_interface_descriptor usb_dfu_interface = {
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.bInterfaceClass = 0xFE, /**< DFU interface class (not defined in libopencm3 dfu lib) */
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.bInterfaceSubClass = 1, /**< DFU interface subclass (not defined in libopencm3 dfu lib) */
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.bInterfaceProtocol = 2, /**< DFU interface mode protocol (not defined in libopencm3 dfu lib) */
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.iInterface = 3, /**< the index of the string in the string table that represents interface description */
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.iInterface = 4, /**< the index of the string in the string table that represents interface description */
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.extra = &usb_dfu_functional, /**< point to functional descriptor */
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.extralen = sizeof(usb_dfu_functional), /**< size of functional descriptor */
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};
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@ -115,12 +115,16 @@ static const struct usb_config_descriptor usb_dfu_configuration = {
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.interface = usb_dfu_interfaces, /**< pointer to an array of interfaces */
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};
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/** device ID used as serial number */
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static char usb_serial[] = "00112233445566778899aabb";
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/** USB string table
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* @note starts with index 1
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*/
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static const char *usb_dfu_strings[] = {
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"CuVoodoo", /**< manufacturer string */
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"CuVoodoo STM32F1xx DFU bootloader", /**< product string */
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(const char*)usb_serial, /**< device ID used as serial number */
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"DFU bootloader (DFU mode)", /**< DFU interface string */
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};
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@ -284,6 +288,27 @@ static enum usbd_request_return_codes usb_dfu_control_request(usbd_device *usbd_
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void usb_dfu_setup(void)
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{
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// set serial
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for (uint8_t i = 0; i < LENGTH(usb_serial) - 1; i++) { // write the serial
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uint32_t id; // current ID part
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if (i < 8) {
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id = DESIG_UNIQUE_ID0;
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} else if (i < 16) {
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id = DESIG_UNIQUE_ID1;
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} else {
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id = DESIG_UNIQUE_ID2;
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}
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// transform into character
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char c = (id >> ((7 - (i % 8)) * 4)) & 0x0f; // get nibble
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if (c < 10) {
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c = '0' + c;
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} else {
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c = 'a' + (c - 10);
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}
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// set character
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usb_serial[i] = c;
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}
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rcc_periph_reset_pulse(RST_USB); // reset USB peripheral
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usb_disconnect(); // disconnect to force re-enumeration
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rcc_periph_clock_enable(RCC_GPIOA); // enable clock for GPIO used for USB
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@ -13,9 +13,9 @@
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*
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*/
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/** library for USB DFU to write on internal flash (API)
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* @file usb_dfu.h
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* @file
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* @author King Kévin <kingkevin@cuvoodoo.info>
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* @date 2017
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* @date 2017-2019
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*/
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#pragma once
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