Add hidden Serial overflow debug options
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@ -72,6 +72,14 @@
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uint8_t rx_dropped_bytes = 0;
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#endif
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#if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
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uint8_t rx_buffer_overruns = 0;
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#endif
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#if ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS)
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uint8_t rx_framing_errors = 0;
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#endif
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#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
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ring_buffer_pos_t rx_max_enqueued = 0;
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#endif
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@ -99,6 +107,19 @@
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// Get the next element
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ring_buffer_pos_t i = (ring_buffer_pos_t)(h + 1) & (ring_buffer_pos_t)(RX_BUFFER_SIZE - 1);
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// This must read the M_UCSRxA register before reading the received byte to detect error causes
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#if ENABLED(SERIAL_STATS_DROPPED_RX)
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if (TEST(M_UCSRxA, M_DORx) && !++rx_dropped_bytes) --rx_dropped_bytes;
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#endif
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#if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
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if (TEST(M_UCSRxA, M_DORx) && !++rx_buffer_overruns) --rx_buffer_overruns;
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#endif
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#if ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS)
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if (TEST(M_UCSRxA, M_FEx) && !++rx_framing_errors) --rx_framing_errors;
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#endif
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// Read the character from the USART
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uint8_t c = M_UDRx;
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@ -62,6 +62,9 @@
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#define M_TXCx SERIAL_REGNAME(TXC,SERIAL_PORT,)
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#define M_RXCIEx SERIAL_REGNAME(RXCIE,SERIAL_PORT,)
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#define M_UDREx SERIAL_REGNAME(UDRE,SERIAL_PORT,)
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#define M_FEx SERIAL_REGNAME(FE,SERIAL_PORT,)
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#define M_DORx SERIAL_REGNAME(DOR,SERIAL_PORT,)
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#define M_UPEx SERIAL_REGNAME(UPE,SERIAL_PORT,)
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#define M_UDRIEx SERIAL_REGNAME(UDRIE,SERIAL_PORT,)
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#define M_UDRx SERIAL_REGNAME(UDR,SERIAL_PORT,)
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#define M_UBRRxH SERIAL_REGNAME(UBRR,SERIAL_PORT,H)
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@ -91,6 +94,14 @@
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extern uint8_t rx_dropped_bytes;
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#endif
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#if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
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extern uint8_t rx_buffer_overruns;
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#endif
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#if ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS)
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extern uint8_t rx_framing_errors;
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#endif
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#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
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extern ring_buffer_pos_t rx_max_enqueued;
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#endif
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@ -112,6 +123,14 @@
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FORCE_INLINE static uint32_t dropped() { return rx_dropped_bytes; }
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#endif
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#if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
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FORCE_INLINE static uint32_t buffer_overruns() { return rx_buffer_overruns; }
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#endif
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#if ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS)
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FORCE_INLINE static uint32_t framing_errors() { return rx_framing_errors; }
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#endif
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#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
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FORCE_INLINE static ring_buffer_pos_t rxMaxEnqueued() { return rx_max_enqueued; }
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#endif
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