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/***!
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/***!
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 * @brief return the next character in the Serial input buffer
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 * @brief return the next character in the Serial input buffer
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 * This function will wait until a character arrives.
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 * This function will wait until a character arrives.
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 */
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 */
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uint8_t
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inline uint8_t
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GetCharSerial (usart_ctl *instance)
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GetCharSerial (usart_ctl *instance)
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{
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{
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  uint8_t c;
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  uint8_t c;
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  __HAL_UART_DISABLE_IT (instance, UART_IT_RXNE);
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  __HAL_UART_DISABLE_IT (instance, UART_IT_RXNE);
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  while (!instance->rx_usart_buffer_full
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  while (!instance->rx_usart_buffer_full