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diff --git a/lib/.cproject b/lib/.cproject
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diff --git a/lib/src/mcu/f0/div.asm b/lib/src/mcu/f0/div.asm
new file mode 100644
index 00000000..04221fd1
--- /dev/null
+++ b/lib/src/mcu/f0/div.asm
@@ -0,0 +1,134 @@
+/* Runtime ABI for the ARM Cortex-M0
+ * idiv.S: signed 32 bit division (only quotient)
+ * idivmod.S: signed 32 bit division (quotient and remainder)
+ * uidivmod.S: unsigned 32 bit division
+ *
+ * Copyright (c) 2012 Jörg Mische
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "config/mcu_defines.h"
+#ifdef STM32PLUS_F0
+
+ .syntax unified
+ .text
+ .thumb
+ .cpu cortex-m0
+@ int __aeabi_idiv(int num:r0, int denom:r1)
+@
+@ Divide r0 by r1 and return quotient in r0 (all signed).
+@ Use __aeabi_uidivmod() but check signs before and change signs afterwards.
+@
+ .thumb_func
+ .section .text.__aeabi_idiv
+ .global __aeabi_idiv
+__aeabi_idiv:
+ cmp r0, #0
+ bge L_num_pos
+ rsbs r0, r0, #0 @ num = -num
+ cmp r1, #0
+ bge L_neg_result
+ rsbs r1, r1, #0 @ den = -den
+ b __aeabi_uidivmod
+L_num_pos:
+ cmp r1, #0
+ bge __aeabi_uidivmod
+ rsbs r1, r1, #0 @ den = -den
+L_neg_result:
+ push {lr}
+ bl __aeabi_uidivmod
+ rsbs r0, r0, #0 @ quot = -quot
+ pop {pc}
+@ {int quotient:r0, int remainder:r1}
+@ __aeabi_idivmod(int numerator:r0, int denominator:r1)
+@
+@ Divide r0 by r1 and return the quotient in r0 and the remainder in r1
+@
+ .thumb_func
+ .section .text.__aeabi_idivmod
+ .global __aeabi_idivmod
+__aeabi_idivmod:
+ cmp r0, #0
+ bge L_num_pos_bis
+ rsbs r0, r0, #0 @ num = -num
+ cmp r1, #0
+ bge L_neg_both
+ rsbs r1, r1, #0 @ den = -den
+ push {lr}
+ bl __aeabi_uidivmod
+ rsbs r1, r1, #0 @ rem = -rem
+ pop {pc}
+L_neg_both:
+ push {lr}
+ bl __aeabi_uidivmod
+ rsbs r0, r0, #0 @ quot = -quot
+ rsbs r1, r1, #0 @ rem = -rem
+ pop {pc}
+L_num_pos_bis:
+ cmp r1, #0
+ bge __aeabi_uidivmod
+ rsbs r1, r1, #0 @ den = -den
+ push {lr}
+ bl __aeabi_uidivmod
+ rsbs r0, r0, #0 @ quot = -quot
+ pop {pc}
+@ unsigned __aeabi_uidiv(unsigned num, unsigned denom)
+@
+@ Just an alias for __aeabi_uidivmod(), the remainder is ignored
+@
+ .thumb_func
+ .section .text.__aeabi_uidivmod
+ .global __aeabi_uidiv
+__aeabi_uidiv:
+@ {unsigned quotient:r0, unsigned remainder:r1}
+@ __aeabi_uidivmod(unsigned numerator:r0, unsigned denominator:r1)
+@
+@ Divide r0 by r1 and return the quotient in r0 and the remainder in r1
+@
+ .thumb_func
+ .global __aeabi_uidivmod
+__aeabi_uidivmod:
+ cmp r1, #0
+ bne L_no_div0
+ b __aeabi_idiv0
+L_no_div0:
+ @ Shift left the denominator until it is greater than the numerator
+ movs r2, #1 @ counter
+ movs r3, #0 @ result
+ cmp r0, r1
+ bls L_sub_loop0
+ adds r1, #0 @ dont shift if denominator would overflow
+ bmi L_sub_loop0
+L_denom_shift_loop:
+ lsls r2, #1
+ lsls r1, #1
+ bmi L_sub_loop0
+ cmp r0, r1
+ bhi L_denom_shift_loop
+L_sub_loop0:
+ cmp r0, r1
+ bcc L_dont_sub0 @ if (num>denom)
+ subs r0, r1 @ numerator -= denom
+ orrs r3, r2 @ result(r3) |= bitmask(r2)
+L_dont_sub0:
+ lsrs r1, #1 @ denom(r1) >>= 1
+ lsrs r2, #1 @ bitmask(r2) >>= 1
+ bne L_sub_loop0
+ mov r1, r0 @ remainder(r1) = numerator(r0)
+ mov r0, r3 @ quotient(r0) = result(r3)
+ bx lr
+__aeabi_idiv0:
+ bl __aeabi_idiv0
+
+#endif