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-rw-r--r--src/platforms/stm32/serialno.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/platforms/stm32/serialno.c b/src/platforms/stm32/serialno.c
new file mode 100644
index 0000000..ef28ed2
--- /dev/null
+++ b/src/platforms/stm32/serialno.c
@@ -0,0 +1,45 @@
+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2015 Black Sphere Technologies Ltd.
+ * Written by Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "general.h"
+
+char *serialno_read(char *s)
+{
+#if defined(STM32F4)
+ volatile uint32_t *unique_id_p = (volatile uint32_t *)0x1FFF7A10;
+#else
+ volatile uint32_t *unique_id_p = (volatile uint32_t *)0x1FFFF7E8;
+#endif
+ uint32_t unique_id = *unique_id_p +
+ *(unique_id_p + 1) +
+ *(unique_id_p + 2);
+ int i;
+
+ /* Fetch serial number from chip's unique ID */
+ for(i = 0; i < 8; i++) {
+ s[7-i] = ((unique_id >> (4*i)) & 0xF) + '0';
+ }
+ for(i = 0; i < 8; i++)
+ if(s[i] > '9')
+ s[i] += 'A' - '9' - 1;
+ s[8] = 0;
+
+ return s;
+}
+