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G6 Direct Stepping (#17853)

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This commit is contained in:
Colin Godsey
2020-05-11 18:22:41 -06:00
committed by GitHub
parent 174e41c17d
commit 8a22ef0c83
17 changed files with 859 additions and 64 deletions
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24
Marlin/src/HAL/AVR/MarlinSerial.cpp
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@ -43,6 +43,10 @@
#include "MarlinSerial.h"
#include "../../MarlinCore.h"
#if ENABLED(DIRECT_STEPPING)
#include "../../feature/direct_stepping.h"
#endif
template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_r MarlinSerial<Cfg>::rx_buffer = { 0, 0, { 0 } };
template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_t MarlinSerial<Cfg>::tx_buffer = { 0 };
template<typename Cfg> bool MarlinSerial<Cfg>::_written = false;
@ -131,6 +135,18 @@
static EmergencyParser::State emergency_state; // = EP_RESET
// This must read the R_UCSRA register before reading the received byte to detect error causes
if (Cfg::DROPPED_RX && B_DOR && !++rx_dropped_bytes) --rx_dropped_bytes;
if (Cfg::RX_OVERRUNS && B_DOR && !++rx_buffer_overruns) --rx_buffer_overruns;
if (Cfg::RX_FRAMING_ERRORS && B_FE && !++rx_framing_errors) --rx_framing_errors;
// Read the character from the USART
uint8_t c = R_UDR;
#if ENABLED(DIRECT_STEPPING)
if (page_manager.maybe_store_rxd_char(c)) return;
#endif
// Get the tail - Nothing can alter its value while this ISR is executing, but there's
// a chance that this ISR interrupted the main process while it was updating the index.
// The backup mechanism ensures the correct value is always returned.
@ -142,14 +158,6 @@
// Get the next element
ring_buffer_pos_t i = (ring_buffer_pos_t)(h + 1) & (ring_buffer_pos_t)(Cfg::RX_SIZE - 1);
// This must read the R_UCSRA register before reading the received byte to detect error causes
if (Cfg::DROPPED_RX && B_DOR && !++rx_dropped_bytes) --rx_dropped_bytes;
if (Cfg::RX_OVERRUNS && B_DOR && !++rx_buffer_overruns) --rx_buffer_overruns;
if (Cfg::RX_FRAMING_ERRORS && B_FE && !++rx_framing_errors) --rx_framing_errors;
// Read the character from the USART
uint8_t c = R_UDR;
if (Cfg::EMERGENCYPARSER) emergency_parser.update(emergency_state, c);
// If the character is to be stored at the index just before the tail