About SteMMo

SteMMo · 2025-03-11

Moved from MCUs section - STM32 is an MPU.Hi all,I'm developing a firmware for a custom board based on MP135 micro - baremetal solution.The board has a MMC memory (no SD card) to host both bootloader and storage area (Fat).I've added the FileX module...

SteMMo · 2025-01-21

Hi all,in my firmware I fall in a UsageFault but, since I have some tasks, I not able to understand which instruction caused the fault. Both PC and LR are pointing to the handler ..I attached the current screen.Thanks!

SteMMo · 2024-12-23

Hi all,I'm developing a composite USB device on USB OTG port on a board based on STM32F429 chip.The device has two interfaces: a custom device + a CDC device. I'm using USB_Device_Library code.Windows host correctly shows 3 items: the composite devic...

SteMMo · 2024-12-12

Hi all,we are developing a board based on STM32F429 chip.In particular I'm developing a composite USB device on USB OTG port, showing a custom device + a CDC device [ep 0x85, 0x06, 0x83] using USB_Device_Library code.Windows correctly shows 3 items: ...

SteMMo · 2024-11-06

Hi all,I'm trying to enable the host functionalities for USB Port1 for MP135: I imported the Host Library and implemented some functions on usbh_conf.c file. Attached to the DK board I have a optic mouse.After some basic initialization I'm in the USB...

SteMMo · 2025-02-12

Maybe I found the cause: the problem was the sum of all the TxFifo areas that was greater than 1.25kb, as stated from the Reference manual.Remains the dubt about the switching of the EPs numbers: the original x82+x01 and 0x83+0x82+0x01 are the only w...

SteMMo · 2025-02-03

Another test - just to switched the EP numbers:CDC EPs: 0x81 + 0x01 + CMD: 0x83CUSTOM EPs: 0x82 + 0x02The serial port is working well.The custom device is detected but when I run my application no interrupts are fired on STM32 (????). Other test - s...

SteMMo · 2025-01-31

Starting EP configuration:CUSTOM device = 0x81, 0x02CDC device = CMD 0x83, 0x82, 0x01As said, CUSTOM device is detected and works well. So, I tried to change the EP numbers:CUSTOM device = 0x83, 0x01CDC device = CMD 0x82, 0x81, 0x02With this configur...

SteMMo · 2025-01-30

Just for completeness:I'm working on a composite device: the serial port device is one of the two exposed classes.the first one is a custom device and it is working wellthe EPOUT 0x01 (host to dev) is correct; when I open a serial terminal on host an...

SteMMo · 2025-01-29

Hello!Which ep configuration/parameter/register I can check?In my case I'm using the IN 0x2 to send a single byte.I'm in the OTG_FS_IRQHandler -> HAL_PCD_IRQHandler() when the USB_OTG_DIEPINT_TXFE interrupt is received for EP2.Here I enter in the PCD...

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