nomagic probe
The nomic probe is a firmware for the RaspberryPi Pico board that provides a gdbserver interface for debugging other boards. That is the functionality of the picoprobe and OpenOCD combined. It is also similar to the Black Magic Firmware.
It does not use external libraries. Therefore all code is in this library, no dependencies!
No dynamic memory allocation, no malloc!
features
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USB CDCD(serial port) gdb server
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USB MSCD(thumb drive) for configuration files.
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support for SWD according to ARM ADIv5.0, ARM ADIv5.1, ARM ADIv5.2, ARM ADIv6.0.
documentation
building and starting
The firmware can be build using make. The generated Files will be placed in the bin folder. For details try
make help
for this to work you (obviously) need to have make installed. Depending on the target you are building for you might need to have additionaltools installed:
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For linux (Posix systems) you need pthreads and gcc. You can debug using gdb.
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To build for ARM Cortex-M Targets you need GCC ARM Embedded
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for automatic generated documentation you need Doxygen
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for unit testing you need CppUTest
pinout
pico
The pico has 40 pins (1..40) Numbered counter clock wise starting at the USB connector.
+-----+
+-------+ USB +---------+
GPIO 0 -+- 1 +-----+ 40 -+- Vbus
GPIO 1 -+- 2 39 -+- Vsys
Gnd -+- 3 38 -+- Gnd
GPIO 2 -+- 4 37 -+- 3V3_EN
GPIO 3 -+- 5 36 -+- 3V3(Out)
GPIO 4 -+- 6 35 -+- ADC-Vref
GPIO 5 -+- 7 34 -+- GPIO 28
Gnd -+- 8 33 -+- Gnd
GPIO 6 -+- 9 32 -+- GPIO 27
GPIO 7 -+- 10 31 -+- GPIO 26
GPIO 8 -+- 11 30 -+- Run = /Reset
GPIO 9 -+- 12 29 -+- GPIO 22
Gnd -+- 13 28 -+- Gnd
GPIO 10 -+- 14 27 -+- GPIO 21
GPIO 11 -+- 15 26 -+- GPIO 20
GPIO 12 -+- 16 25 -+- GPIO 19
GPIO 13 -+- 17 24 -+- GPIO 18
Gnd -+- 18 23 -+- Gnd
GPIO 14 -+- 19 22 -+- GPIO 17
GPIO 15 -+- 20 Debug 21 -+- GPIO 16
+-----------------------+
S G S
W n W
C d D
L I
K O
Pin 2: (GPIO 1) SWDIR (High = from Probe to target; Low= from Target to probe)
Pin 4: (GPIO 2) SWCLK
Pin 5: (GPIO 3) SWDIO
Pin 6: (GPIO 4) Target Uart TX (UART1) connect to target RT
Pin 7: (GPIO 5) Target Uart RX (UART1) connect to target TX
Pin 9: (GPIO 6) Run = /Reset
Pin 21: (GPIO 16) Debug Uart TX (UART0)
Pin 22: (GPIO 17) Debug Uart RX (UART0)
license
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.
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/