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[/] [neorv32/] [trunk/] [sw/] [lib/] [source/] [neorv32_uart.c] - Diff between revs 2 and 3
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Rev 3 |
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Line 128... |
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/**********************************************************************//**
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/**********************************************************************//**
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* Send single char via UART.
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* Send single char via UART.
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*
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*
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* @note This function is blocking.
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* @note This function is blocking.
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* @warning The 'SIMCOM_UART_OVERRIDE' compiler user flag will forward all UART TX data to the SIMCOM simulation console output.
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*
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*
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* @param[in] c Char to be send.
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* @param[in] c Char to be send.
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**************************************************************************/
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**************************************************************************/
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void neorv32_uart_putc(char c) {
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void neorv32_uart_putc(char c) {
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#ifdef DEVNULL_UART_OVERRIDE
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#warning UART OVERRIDE! Sending all UART.TX data to DEVNULL simulation output instead of UART transmitter. Use this for simulations only!
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DEVNULL_DATA = (uint32_t)c;
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#else
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// wait for previous transfer to finish
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// wait for previous transfer to finish
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while ((UART_CT & (1<<UART_CT_TX_BUSY)) != 0);
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while ((UART_CT & (1<<UART_CT_TX_BUSY)) != 0);
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UART_DATA = ((uint32_t)c) << UART_DATA_LSB;
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UART_DATA = ((uint32_t)c) << UART_DATA_LSB;
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#endif
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}
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}
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/**********************************************************************//**
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/**********************************************************************//**
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* Get char from UART.
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* Get char from UART.
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