# \#stm32f4

**URL:** https://forums.digi.com/tag/stm32f4/3481.md

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## [XBEE S2 Pro STM32F4 and 7 UART DMA](https://forums.digi.com/t/xbee-s2-pro-stm32f4-and-7-uart-dma/18677)

<div class="topic-metadata">

**Author:** [@gvi70000](https://forums.digi.com/u/gvi70000)\
**Replies:** 2\
**Last updated:** [September 1, 2017, 11:47am UTC](https://forums.digi.com/t/xbee-s2-pro-stm32f4-and-7-uart-dma/18677 "2017-09-01T11:47:59Z")

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Hi, When using normal transmit on UART i can send a message from a router to a coordinator without no issue HAL\_UART\_Transmit(&huart2, (uint8\_t\*)xFrame, sLen,100); , but when i try to send it using HAL\_UART\_Transmit\_…