To make them easier to find, we’ve created this page to navigate the blog pages pertaining to the STM32-DVM-MTR2K boards.
Articles/Tutorials:
- Introducing the STM32-DVM-MTR2K
- Programming an MTR2000 for the STM32-DVM-MTR2K
- MTR2000 and STM32-DVM-MTR2K: Analog + Digital, Playing Nice Together
- STM32-DVM-MTR2K: Deep Dive – Updating Firmware
- Configuring MMDVM for the MTR2000 and STM32-DVM-MTR2K
- Coming Soon: STM32-DVM-MTR2K V2.0
- STM32-DVM-MTR2K: The Story Behind it, and the Future
Documentation:
Official STM32-DVM-MTR2K Version 2.0c Manual (current version)
Official STM32-DVM-MTR2K Manual (includes V1c and V2a)
STM32-DVM-MTR2K V1c – Original production board:
STM32-DVM-MTR2K V1c-a – Updated version using only the NanoPi NEO:
- Schematic diagram
- Schematic diagram (updated with unnecessary parts removed)
- Printed circuit board diagram (used for both schematic versions)
STM32-DVM-MTR2K V2.0a/b/c
The V2.0a/b board is the same, electrically as the V1c-a with unnecessary parts removed, plus the addition of an ATMega328 microcontrollers to fill the role of the Motorola Auxiliary I/O card. Boards from me come with the software burned to the ATMega AND the Arduino ATMega328P bootloader which will allow future binary updates directly from the NanoPi NEO!
- Schematic diagram V2.0a/b
- Printed circuit board diagram V2.0a/b
- Schematic diagram V2.0c
- Printed circuit board diagram V2.0c
To update firmware on the ATMega328 from the NanoPi NEO, use the following command line from whatever directory the .hex file is located. You will need to have “GPIO” library installed (see articles) and avrdude.
gpio mode 10 out; gpio write 10 0; gpio write 10 1; gpio mode 10 in; avrdude -c arduino -p ATMEGA328P -P /dev/ttyS2 -b 57600 -U flash:w:STM32-DVM-MTR2K_v2_0b.hex
Binary Firmware Files
STM32F446RET6 – MODEM in V1 and V2a and V2b and some V2c boards
STM32F405RGT6 – MODEM in some V2c boards
ATMEGA328P – I/O Processor used in all V2 boards
