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STM32 core support for Arduino

Results 74 Arduino_Core_STM32 issues
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Implement SPI.transfer16() as a true 16 bit transfer

**Describe the bug** SPI transfer16() produces two 8 byte transfers rather than one 16 bit transfer. **To Reproduce** Here is a code that is used for testing SPI transfers. In...

## Support for Oceanus-I module and EV **Summary** This PR adds support for the Wuerth Elektronik Oceanus-I module and EV board which has the STM32WLE5CC MCU.

new variant

Requesting support for STM32WB0x nucleo boards.

enhancement
new variant

Add support for the newer STM32N6 chips and their features, or at least the (seemingly more widely available) N657 chips as used in the NUCLEO-N657X0-Q.

enhancement

raise cdc buffer size 32KB limit due to uint16_t length variables. This PR fixes bug: cdc queue limited Now CDC_TRANSMIT_QUEUE_BUFFER_PACKET_NUMBER and/or CDC_RECEIVE_QUEUE_BUFFER_PACKET_NUMBER both can be greater than 512. which every...

enhancement

I'm using freertos, and I have a task listening serial messages. When the rx buffer is empty, I want the task to be blocked, or "sleep", and a rx callback...

enhancement

**Board description (please complete the following information):** - Name: 511-NUCLEO-WL33CC2 or CDSENET E04-400M20S Module - Link to all relevant information: https://www.st.com/en/evaluation-tools/nucleo-wl33cc2.html https://www.cdebyte.com/products/E04-400M20S

enhancement
new variant

**Describe the bug** Compilation errors when I use the following configuration with the Nucleo-U5A5ZJ-Q: The output: ``` C:\Users\user1\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.11.0\libraries\USBDevice\src\usbd_conf.c: In function 'HAL_PCD_MspInit': C:\Users\user1\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.11.0\libraries\USBDevice\src\usbd_conf.c:174:5: error: implicit declaration of function '__HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE' [-Wimplicit-function-declaration] 174...

bug :bug: