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Monitor begin crashes the STM32 uC #38

@bdmihai

Description

@bdmihai

On Arduino Uno Q calling Monitor.begin(115200); in the setup function crashes the uC.

Error output on the serial interface:

?\e[m\r\e[1;32muart:~$ \e[mû?\e[m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.628,000] \e[1;31m<err> os: ***** BUS FAULT *****\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.629,000] \e[1;31m<err> os: Precise data bus error\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.631,000] \e[1;31m<err> os: BFAR Address: 0x0\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.632,000] \e[1;31m<err> os: r0/a1: 0x20012048 r1/a2: 0x00000000 r2/a3: 0x00000000\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.633,000] \e[1;31m<err> os: r3/a4: 0x00000000 r12/ip: 0x00000000 r14/lr: 0x2000f68d\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.634,000] \e[1;31m<err> os: xpsr: 0x61000000\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.635,000] \e[1;31m<err> os: s[ 0]: 0x20012008 s[ 1]: 0x2000c5b5 s[ 2]: 0x2000f5c9 s[ 3]: 0x2000f68d\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.636,000] \e[1;31m<err> os: s[ 4]: 0x20012048 s[ 5]: 0x08005b5b s[ 6]: 0x00000000 s[ 7]: 0xaaaaaaaa\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.637,000] \e[1;31m<err> os: s[ 8]: 0xaaaaaaaa s[ 9]: 0xaaaaaaaa s[10]: 0x00000001 s[11]: 0x00000000\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.638,000] \e[1;31m<err> os: s[12]: 0x20012048 s[13]: 0x00000000 s[14]: 0x59393029 s[15]: 0x51b6d765\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.639,000] \e[1;31m<err> os: fpscr: 0x412f3742\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.641,000] \e[1;31m<err> os: Faulting instruction address (r15/pc): 0x08011ab2\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.641,000] \e[1;31m<err> os: >>> ZEPHYR FATAL ERROR 25: Unknown error on CPU 0\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.643,000] \e[1;31m<err> os: Current thread: 0x20012048 (unknown)\e[0m\r\e[1;32muart:~$ \e[m\e[8D\e[J[00:00:00.643,000] \e[1;31m<err> os: Halting system\e[0m\r\e[1;32muart:~$ \e[m

Sketch similar to the one that I posted in the ticket: #37

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