jld

Thanks for your support I used the STM32 ST-LINK utility which provides a GUI but does the same as the line command. This is weird since everything else seems to work. I have ordered a new board just in case it is a HW problem.

Beside flashing the project.bin provided by TK, what else should be done??? Same problem as Nhile: MIOS studio sees MIOS32 IN/OUT but does not connect. What is also wierd is that after bootloader is flashed, it is necessary to set BOOT0 to VDD for ST-LINK to be recognized by the PC??? niklasni1, would you mind describing the step you went through to get it running?

Reading the LPC tuto, I saw that : "Background: the 3.3V line between LPC-Link and target powers the core if an USB cable is connected to the LPC-Link module. But usually we want to power the core from the USB socket of the MBHP_CORE_LPC17 module. As long as the 3.3V connection is available, the LPC-Link will be powered as well, and it forces the LPC1769 chip into reset as long as no debugger connection has been opened by the LPCXpresso IDE." Does it mean that on the STM32F4 disco board, after the bootloader is flashed, STLINK should be disconnected as well to allow the bootloader to boot correctly?

LPC17 is probably an easier solution but I have an STM32F4 board and would like to do something with it. Because there are more than enough I/O on the board, I would like to avoid using an additional multiplexer and perform the 3 Keyboards decoding using 40 of the GPIO (it requires 28 I/O without velocity and 40 I/O with). The code to scan multiple FATAR keyboards is already working and the initial reason to work with MIOS was to benefit from USB MIDI support. Looking at all the possibilities of MIOS, a good solution might be to turn the code for the multiple FATAR keyboards into a MIOS application if I can manage to access the 40 IO I need. Looking at TK post, a lot seems to be already working and I just wonder how to get the bootloader on the board and have it recognized by MIOS studio. Any help in that sense would be appreciated. JL

Complete noob with MIOS, I am trying to use an STM32F4 discovery board to create a MIDI USB 3 manuals console. I used the precompiled bootloader from the post above and flashed it using CoFlash (using Windows and did not find any other software to flash the binary). I am powering the board from PC using the STM link USB interface and then connect the board to the PC using the micro USB connector on the board. I get a USB device not recognized message and MIO studio does not see the board. I am probably missing something obvious but did not figured out yet!!! Any help welcome. JLD

Hello, Just bumped into this forum (BTW, a lot of interesting things!) while looking for a simple MIDI out USB DIY board. (I am looking for simple and low cost solution to midify an organ pedalboard that could be plugge directly to a PC USB port) I understand there are still issues with the UART on the 18f4550 but I guess it should work perfectly for MIDI out through the USB port (would it also work with the UART when doing MIDIout only?) Would it be OK to re-use the USB part of the code you have developped for the 18f4550? Thanks, JLD