From 8f6efe5a7b8a830b6cd17b7c378fc4f2fa92f069 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Mon, 25 Nov 2019 00:25:57 -0500 Subject: stm32: Enable chipid as usb serial number Signed-off-by: Matt Baker Signed-off-by: Kevin O'Connor --- src/stm32/chipid.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 src/stm32/chipid.c (limited to 'src/stm32/chipid.c') diff --git a/src/stm32/chipid.c b/src/stm32/chipid.c new file mode 100644 index 00000000..73e27503 --- /dev/null +++ b/src/stm32/chipid.c @@ -0,0 +1,33 @@ +// Support for extracting the hardware chip id on stm32 +// +// Copyright (C) 2019 Kevin O'Connor +// +// This file may be distributed under the terms of the GNU GPLv3 license. + +#include "generic/usb_cdc.h" // usb_fill_serial +#include "generic/usbstd.h" // usb_string_descriptor +#include "internal.h" // UID_BASE +#include "sched.h" // DECL_INIT + +#define CHIP_UID_LEN 12 + +static struct { + struct usb_string_descriptor desc; + uint16_t data[CHIP_UID_LEN * 2]; +} cdc_chipid; + +struct usb_string_descriptor * +usbserial_get_serialid(void) +{ + return &cdc_chipid.desc; +} + +void +chipid_init(void) +{ + if (!CONFIG_USB_SERIAL_NUMBER_CHIPID) + return; + usb_fill_serial(&cdc_chipid.desc, ARRAY_SIZE(cdc_chipid.data) + , (void*)UID_BASE); +} +DECL_INIT(chipid_init); -- cgit v1.2.3-70-g09d2