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Damien George authored
The HAL_UART_Transmit function has changed in the latest HAL version such that the Timeout is a timeout for the entire function, rather than a timeout between characters as it was before. The HAL function also does not allow one to reliably tell how many characters were sent before the timeout (if a timeout occurred). This patch provides a custom function to do UART transmission, completely replacing the HAL version, to fix the above-mentioned issues.
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