About LMorr.3

LMorr.3 · 2023-11-28

I'm using an STM32F373's UART to output MIDI data. Basiclly the TX USART pin needs to light an LED in the MIDI cable's opto-coupler. I currently have the TX pin connected directly to the MIDI DIN connector pin through a 200ohm resistor. I know thi...

LMorr.3 · 2023-11-27

I have a Nucleo F303ZE and enabled USB Device middleware along with the USB 'Device FS' Connectivity. I also configured the CDC_SET_LINE_CODING and CDC_GET_LINE_CODING functions in USB_DEVICE/App/usbd_cdc_if.c I connect a USB cable to the STLink co...

LMorr.3 · 2023-11-25

I am using a STM32F373 with the USB Middleware set to 'Communication Device Class (Virtual Port Com)'.Is it possible to have it 'act' as a UART or SPI type port, or do I need to hook into the USB library to TX/RX data over USB? I currently use USART...

LMorr.3 · 2023-11-24

Hello,I have read AN4056 and noticed there are eeprom.h and eeprom.c project files referenced. Where do I download these files?Thanks,

LMorr.3 · 2023-11-23

I have an app running on an STM32F373 and need to save 'presets' as persistent non-volatile data. Each preset is 500bytes and I would like to save at least 100 presets.What is the simplest method? Should I use a removable SD card type solution, or ...

LMorr.3 · 2023-11-28

Have I wired this up correctly to isolate the STM32F373's USART TX?

LMorr.3 · 2023-11-28

Ok thanks. I had read the spec however was concerned about the potential for shorting of cable with only 10ohm and 33ohm resistors in place. ( i'm using 3.3V source ). Using the mosfet as you suggest would allow me to stick to the spec and also iso...

LMorr.3 · 2023-11-28

Ok thanks. I'll use a MMBT3904 transistor. Now that I use a transistor for TX, the output is inverted. Is it possible to set USART's TX to invert it's output and not invert RX, or should I use a component to invert TX? I guess I could use a PNP i...

LMorr.3 · 2023-11-27

Just curious; If my uC is using USB Device FS and self-powered, could I get away with just adding a 1k5 pull-up resistor to 3.4V on D+, or do I need to use pin PA9 as input to sense the presence of the Host USB's vbus before enabling the pull-up usin...

LMorr.3 · 2023-11-27

That doc will help, thanks.

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Getting more current from GPIO

Enabling USB Device CDC on Nucleo F303ZE

USB Virtual Port Com as USB->Serial Converter

Where to find AN4056 project files

Saving Preset Data to STM32F373

Re: Getting more current from GPIO

Re: Getting more current from GPIO

Re: Getting more current from GPIO

Re: Enabling USB Device CDC on Nucleo F303ZE

Re: Enabling USB Device CDC on Nucleo F303ZE