About Paulus

Paulus · 2020-11-15

Hi,I am struggling for a while to get the CDC_Host to work. Steps that I have taken are:Create a MX Cube USB Host HS port projectset correct frequencies 8Mhz for HSI, heap=1200 stack 800 (tried various values with no effect)Generate the code (eWarm a...

Paulus · 2020-10-19

I've setup an STM32F407 as a CDC Host on the HS peripheral with Full Speed (FS) comms, but the IN transaction always returns a NAK and no Device data is received on the Bulk Data pipe. I used the USB Host example from ST.com (userfunction that only t...

Paulus · 2020-10-13

Hi, my USB host (CDC class) enumeration get stalled when the device is attached and enumeration status is ENUM_IDLE. The "IF then" test statement "if ( USBH_HandleEnum(phost) == USBH_OK)" should call the routine USBH_HandleEnum() but it does not and ...

Paulus · 2019-10-22

The USB device I need is working with a set of newer libraries (mxCube). All my application ported code is written with older libraries so the permutations are:A. App with older libraries combined with USB running on new libraries (lazy way, short cu...

Paulus · 2019-01-10

I have been using CooCox successfully for my STM32F103C8. Now I want to port my project to a STM32F105RC but I have not been successful since the startup_stm32f10x_md.c is for the mainstream processors and not for the connectivity line. Even some hit...

Paulus · 2023-10-22

USBD_cdc_if.c needs/** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables* @brief Private variables.* @{*//* Create buffer for reception and transmission *//* It's up to user to redefine and/or remove those define *//** Received da...

Paulus · 2020-11-16

Finally found the issue... too much time behind the PC.The error is in the definition-->extern uint8_t USBH_CDC_Transmit(uint8_t* Buff, uint16_t Lenn);USBH_CDC_Transmit takes three arguments instead of two (phost is missing).

Paulus · 2020-10-28

Sorry for the delayed reply but indeed, I used a stm32 board with a STM VCP CDC device (STM32F103) to connect to the DiscoF407 board. I have sniffed the PC to STM VCP CDC device and it goes thru a lot of line coding.Between DIscoF4 and VCP device, my...

Paulus · 2020-10-28

The device does go thru all enumeration stages successfully. After it finishes and the Application state goes to Application Ready, I set the linecoding to 230400 baud and read out the linecoding after a pause but the baudrate stays 115200...So defin...

Paulus · 2020-10-15

Thanks Dan, I upgraded to the latest STMCube 1.25 firmware and the method if ( USBH_HandleEnum(phost) == USBH_OK) is replaced byif (phost->device.is_connected)The new generated code did not had a systick handler implemented, so that was easy fixed by...

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CDC_Host does not transmit data

STM32F407 CDC Host - IN transaction always returns NAK

STM32F407 USB host enumeration routine is not called

Advice about implementing new code written with HAL into older appln written with older low level libraries (2013).

Anyone who has a STM32F10X_CL.C startup file for CooCox?

Re: Read data from PC to STM32 via USB CDC

Re: CDC_Host does not transmit data

Re: STM32F407 CDC Host - IN transaction always returns NAK

Re: STM32F407 CDC Host - IN transaction always returns NAK

Re: STM32F407 USB host enumeration routine is not called