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ESP32 protect from race in RMT code

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This commit is contained in:
Harald Barth 2023-07-06 15:19:44 +02:00
parent f19db3aa5c
commit c2fcdddd1f
4 changed files with 10 additions and 2 deletions
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4
DCCRMT.cpp
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@ -194,8 +194,10 @@ int RMTChannel::RMTfillData(const byte buffer[], byte byteCount, byte repeatCoun
setDCCBit1(data + bitcounter-1); // overwrite previous zero bit with one bit
setEOT(data + bitcounter++); // EOT marker
dataLen = bitcounter;
noInterrupts(); // keep dataReady and dataRepeat consistnet to each other
dataReady = true;
dataRepeat = repeatCount+1; // repeatCount of 0 means send once
interrupts();
return 0;
}
@ -212,6 +214,8 @@ void IRAM_ATTR RMTChannel::RMTinterrupt() {
if (dataReady) { // if we have new data, fill while preamble is running
rmt_fill_tx_items(channel, data, dataLen, preambleLen-1);
dataReady = false;
if (dataRepeat == 0) // all data should go out at least once
DIAG(F("Channel %d DCC signal lost data"), channel);
}
if (dataRepeat > 0) // if a repeat count was specified, work on that
dataRepeat--;

3
DCCWaveform.cpp
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@ -247,6 +247,9 @@ void DCCWaveform::schedulePacket(const byte buffer[], byte byteCount, byte repea
pendingPacket[byteCount] = checksum;
pendingLength = byteCount + 1;
pendingRepeats = repeats;
// DIAG repeated commands (accesories)
// if (pendingRepeats > 0)
// DIAG(F("Repeats=%d on %s track"), pendingRepeats, isMainTrack ? "MAIN" : "PROG");
// The resets will be zero not only now but as well repeats packets into the future
clearResets(repeats+1);
{

2
GITHUB_SHA.h
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@ -1 +1 @@
#define GITHUB_SHA "devel-overcurrent-202307041424Z"
#define GITHUB_SHA "devel-overcurrent-202307061318Z"

3
version.h
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@ -4,8 +4,9 @@
#include "StringFormatter.h"
#define VERSION "4.2.62pre2"
#define VERSION "4.2.62pre3"
// 4.2.62 - completely new overcurrent detection
// - ESP32 protect from race in RMT code
// 4.2.61 - MAX_CURRENT restriction (caps motor shield value)
// 4.2.60 - Add mDNS capability to ESP32 for autodiscovery
// 4.2.59 - Fix: AP SSID was DCC_ instead of DCCEX_