mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-11-23 08:06:13 +01:00
Ack Management compiles
but remains untested
This commit is contained in:
Asbelos
parent
b2b6886b52
commit
0ad395a63a
250
DCC.cpp
250
DCC.cpp
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@ -1,6 +1,7 @@
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#include "DCC.h"
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#include "DCCWaveform.h"
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#include "DIAG.h"
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#include "Hardware.h"
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// This module is responsible for converting API calls into
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// messages to be sent to the waveform generator.
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@ -20,7 +21,7 @@ void DCC::begin() {
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}
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void DCC::setThrottle( uint16_t cab, uint8_t tSpeed, bool tDirection) {
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byte speedCode= tSpeed + (tSpeed > 0) + tDirection * 128; // max speed is 126, but speed codes range from 2-127 (0=stop, 1=emergency stop)
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byte speedCode = tSpeed + (tSpeed > 0) + tDirection * 128; // max speed is 126, but speed codes range from 2-127 (0=stop, 1=emergency stop)
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setThrottle2(cab, speedCode);
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// retain speed for loco reminders
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updateLocoReminder(cab, speedCode );
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@ -100,58 +101,88 @@ void DCC::writeCVBitMain(int cab, int cv, byte bNum, bool bValue) {
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b[nB++] = lowByte(cab);
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b[nB++] = cv1(WRITE_BIT_MAIN, cv); // any CV>1023 will become modulus(1024) due to bit-mask of 0x03
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b[nB++] = cv2(cv);
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b[nB++] = WRITE_BIT | (bValue?BIT_ON:BIT_OFF) | bNum;
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b[nB++] = WRITE_BIT | (bValue ? BIT_ON : BIT_OFF) | bNum;
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DCCWaveform::mainTrack.schedulePacket(b, nB, 4);
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}
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bool DCC::writeCVByte(int cv, byte bValue) {
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uint8_t message[] = {cv1(WRITE_BYTE, cv), cv2(cv), bValue};
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DCCWaveform::progTrack.schedulePacket(message, sizeof(message), 6); // NMRA recommends 6 write or reset packets for decoder recovery time
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return verifyCVByte(cv, bValue);
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}
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bool DCC::verifyCVByte(int cv, byte value) {
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byte message[] = { cv1(VERIFY_BYTE, cv), cv2(cv), value};
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return DCCWaveform::progTrack.schedulePacketWithAck(message, sizeof(message), 5);
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}
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bool DCC::writeCVBit(int cv, byte bNum, bool bValue) {
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if (bNum>=8) return false;
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byte instruction=WRITE_BIT | bValue?BIT_ON:BIT_OFF | bNum;
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byte message[] = {cv1(BIT_MANIPULATE, cv), cv2(cv), instruction };
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DCCWaveform::progTrack.schedulePacket(message, sizeof(message), 6); // NMRA recommends 6 write or reset packets for decoder recovery time
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return verifyCVBit(cv, bNum, bValue);
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}
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const ackOp WRITE_BIT0_PROG[] = {
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BASELINE,
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W0,WACK,
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V0, WACK, // validate bit is 0
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ITC1, // if acked, callback(1)
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FAIL // callback (-1)
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};
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const ackOp WRITE_BIT1_PROG[] = {
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BASELINE,
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W1,WACK,
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V1, WACK, // validate bit is 1
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ITC1, // if acked, callback(1)
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FAIL // callback (-1)
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};
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bool DCC::verifyCVBit(int cv, byte bNum, bool bValue) {
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if (bNum>=8) return false;
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byte instruction=VERIFY_BIT | bValue?BIT_ON:BIT_OFF | bNum;
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byte message[] = {cv1(BIT_MANIPULATE, cv), cv2(cv), instruction };
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return DCCWaveform::progTrack.schedulePacketWithAck(message, sizeof(message), 5); // NMRA recommends 6 write or reset packets for decoder recovery time
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}
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int DCC::readCVBit(int cv, byte bNum) {
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if (bNum>=8) return -1;
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if (verifyCVBit(cv, bNum,true)) return 1;
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// failed verify might be a zero, or an error so must check again
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if (verifyCVBit(cv, bNum,false)) return 0;
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return -1;
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const ackOp READ_BIT_PROG[] = {
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BASELINE,
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V1, WACK, // validate bit is 1
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ITC1, // if acked, callback(1)
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V0, WACK, // validate bit is zero
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ITC0, // if acked callback 0
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FAIL // bit not readable
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};
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const ackOp WRITE_BYTE_PROG[] = {
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BASELINE,
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WB,WACK, // Write
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VB,WACK, // validate byte
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ITC1, // if ok callback (1)
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FAIL // callback (-1)
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};
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const ackOp READ_CV_PROG[] = {
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BASELINE,
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ZERO, //clear bit and byte values
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// each bit is validated against 1 (no need for zero validation as entire byte is validated at the end)
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V1, WACK, MERGE, // read and merge bit 0
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V1, WACK, MERGE, // read and merge bit 1 etc
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V1, WACK, MERGE,
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V1, WACK, MERGE,
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V1, WACK, MERGE,
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V1, WACK, MERGE,
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V1, WACK, MERGE,
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V1, WACK, MERGE,
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VB, WACK, ITCB, // verify merged byte and return it if acked ok
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FAIL }; // verification failed
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void DCC::writeCVByte(int cv, byte byteValue, ACK_CALLBACK callback) {
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ackManagerSetup(cv, byteValue, WRITE_BYTE_PROG, callback);
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}
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int DCC::readCV(int cv) {
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byte value = 0;
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// get each bit individually by validating against a one.
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for (int bNum = 0; bNum < 8; bNum++) {
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value += verifyCVBit(cv,bNum,true) << bNum;
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}
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return verifyCVByte(cv, value) ? value : -1;
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void DCC::writeCVBit(int cv, byte bitNum, bool bitValue, ACK_CALLBACK callback) {
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if (bitNum >= 8) callback(-1);
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else ackManagerSetup(cv, bitNum, bitValue?WRITE_BIT1_PROG:WRITE_BIT0_PROG, callback);
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}
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void DCC::readCVBit(int cv, byte bitNum, ACK_CALLBACK callback) {
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if (bitNum >= 8) callback(-1);
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else ackManagerSetup(cv, bitNum,READ_BIT_PROG, callback);
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}
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void DCC::readCV(int cv, ACK_CALLBACK callback) {
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ackManagerSetup(cv, 0,READ_CV_PROG, callback);
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}
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void DCC::loop() {
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DCCWaveform::loop(); // powwer overload checks
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DCCWaveform::loop(); // power overload checks
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ackManagerLoop();
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// if the main track transmitter still has a pending packet, skip this loop.
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if ( DCCWaveform::mainTrack.packetPending) return;
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@ -172,24 +203,26 @@ void DCC::loop() {
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}
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}
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int DCC::getLocoId() {
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switch (readCVBit(29,5)) {
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case 1:
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// long address : get CV#17 and CV#18
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{
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int cv17=readCV(17);
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if (cv17<0) break;
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int cv18=readCV(18);
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if (cv18<0) break;
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return cv18 + ((cv17 - 192) <<8);
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}
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case 0: // short address in CV1
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return readCV(1);
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default: // No response or loco
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break;
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}
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return -1;
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void DCC::getLocoId(ACK_CALLBACK callback) {
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callback(-1); // Not yet implemented
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//
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// switch (readCVBit(29, 5)) {
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// case 1:
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// // long address : get CV#17 and CV#18
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// {
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// int cv17 = readCV(17);
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//
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// if (cv17 < 0) break;
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// int cv18 = readCV(18);
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// if (cv18 < 0) break;
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// return cv18 + ((cv17 - 192) << 8);
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// }
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// case 0: // short address in CV1
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// return readCV(1);
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// default: // No response or loco
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// break;
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// }
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// return -1;
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}
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///// Private helper functions below here /////////////////////
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@ -220,7 +253,110 @@ void DCC::updateLocoReminder(int loco, byte speedCode) {
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}
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speedTable[reg].loco = loco;
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speedTable[reg].speedCode = speedCode;
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}
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}
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DCC::LOCO DCC::speedTable[MAX_LOCOS];
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int DCC::nextLoco = 0;
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//ACK MANAGER
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ackOp const * DCC::ackManagerProg;
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byte DCC::ackManagerByte;
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int DCC::ackManagerCv;
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byte DCC::ackManagerBitNum;
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bool DCC::ackReceived;
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int DCC::ackTriggerMilliamps;
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ACK_CALLBACK DCC::ackManagerCallback;
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void DCC::ackManagerSetup(int cv, byte byteValue, ackOp const program[], ACK_CALLBACK callback) {
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ackManagerCv = cv;
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ackManagerProg = program;
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ackManagerByte = byteValue;
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ackManagerCallback = callback;
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ackManagerBitNum=0;
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}
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void DCC::ackManagerLoop() {
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while (ackManagerProg) {
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// breaks from this switch will step to next prog entry
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// returns from this switch will stay on same entry (typically WACK waiting and when all finished.)
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byte opcode=*ackManagerProg;
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switch (opcode) {
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case W0: // write bit
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case W1: // write bit
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{
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byte instruction = WRITE_BIT | (opcode==W1 ? BIT_ON : BIT_OFF) | ackManagerByte;
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byte message[] = {cv1(BIT_MANIPULATE, ackManagerCv), cv2(ackManagerCv), instruction };
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DCCWaveform::progTrack.schedulePacket(message, sizeof(message), 6);
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}
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break;
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case WB: // write byte
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{
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byte message[] = {cv1(WRITE_BYTE, ackManagerCv), cv2(ackManagerCv), ackManagerByte};
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DCCWaveform::progTrack.schedulePacket(message, sizeof(message), 6);
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}
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break;
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case VB: // Issue validate Byte packet
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{
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byte message[] = { cv1(VERIFY_BYTE, ackManagerCv), cv2(ackManagerCv), ackManagerByte};
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DCCWaveform::progTrack.schedulePacket(message, sizeof(message), 5);
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}
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break;
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case V0:
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case V1: // Issue validate bit=0 or bit=1 packet
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{
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byte instruction = VERIFY_BIT | (opcode==V0?BIT_OFF:BIT_ON) | ackManagerByte;
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byte message[] = {cv1(BIT_MANIPULATE, ackManagerCv), cv2(ackManagerCv), instruction };
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DCCWaveform::progTrack.schedulePacket(message, sizeof(message), 5);
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}
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break;
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case WACK: // wait for ack (or absence of ack)
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if (DCCWaveform::progTrack.sentResetsSincePacket > 6) {
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ackReceived = false;
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break; // move on to next prog step
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}
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if (Hardware::getCurrentMilliamps(false) > ackTriggerMilliamps) {
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ackReceived = true;
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DCCWaveform::progTrack.killRemainingRepeats();
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break; // move on tho next step
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}
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return; // maintain place for next poll cycle.
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case ITC0:
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case ITC1: // If True Callback(0 or 1) (if prevous WACK got an ACK)
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if (ackReceived) {
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ackManagerProg = NULL;
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(ackManagerCallback)(opcode==ITC0?0:1);
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return;
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}
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break;
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case ITCB: // If True callback(byte)
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if (ackReceived) {
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ackManagerProg = NULL;
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(ackManagerCallback)(ackManagerByte);
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return;
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}
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break;
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case MERGE: // Merge previous wack response with byte value and increment bit number (use for reading CV bytes)
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ackManagerByte <<= 1;
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if (ackReceived) ackManagerByte |= 1;
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ackManagerBitNum++;
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break;
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case FAIL: // callback(-1)
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ackManagerProg = NULL;
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(ackManagerCallback)(-1);
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return;
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case ZERO:
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ackManagerBitNum=0;
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ackManagerByte=0;
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break;
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case BASELINE:
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if (DCCWaveform::progTrack.sentResetsSincePacket < 6) return; // try again later
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ackTriggerMilliamps=Hardware::getCurrentMilliamps(false) + ACK_MIN_PULSE;
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break;
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} // end of switch
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ackManagerProg++;
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}
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}
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47
DCC.h
47
DCC.h
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@ -3,6 +3,23 @@
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#include <Arduino.h>
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#include "Config.h"
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typedef void (*ACK_CALLBACK)(int result);
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enum ackOp { // Program opcodes for the ack Manager
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W0,W1, // issue write bit
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WB, // issue write byte
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VB, // Issue validate Byte packet
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V0, // Issue validate bit=0 packet
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V1, // issue validate bit=1 packlet
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WACK, // wait for ack (or absence of ack)
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ITC1, // If True Callback(1) (if prevous WACK got an ACK)
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ITC0, // If True callback(0);
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ITCB, // IOf True callback(byte)
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MERGE, // Merge previous wack response with byte value and increment bit number (use for readimng CV bytes)
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FAIL, // callback(-1)
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ZERO, // Clear bit and byte
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BASELINE // ensure enough resets sent before starting and obtain baseline
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};
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class DCC {
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public:
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@ -12,19 +29,20 @@ class DCC {
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// Public DCC API functions
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static void setThrottle( uint16_t cab, uint8_t tSpeed, bool tDirection);
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static int readCV(int cv);
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static int readCVBit(int cv, byte bNum); // -1 for error
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static bool writeCVByte(int cv, byte bValue) ;
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static bool verifyCVByte(int cv,byte bValue);
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static bool writeCVBit(int cv, byte bNum, bool bValue);
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static bool verifyCVBit(int cv, byte bNum, bool bValue);
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static void writeCVByteMain(int cab, int cv, byte bValue);
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static void writeCVBitMain(int cab, int cv, byte bNum, bool bValue);
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static void setFunction( int cab, byte fByte, byte eByte);
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static void setFunction( int cab, byte fByte);
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static void setAccessory(int aAdd, byte aNum, bool activate) ;
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static bool writeTextPacket( byte *b, int nBytes);
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static int getLocoId();
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// ACKable progtrack calls bitresults callback 0,0 or -1, cv returns value or -1
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static void readCV(int cv, ACK_CALLBACK callback);
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static void readCVBit(int cv, byte bitNum, ACK_CALLBACK callback); // -1 for error
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static void writeCVByte(int cv, byte byteValue, ACK_CALLBACK callback) ;
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static void writeCVBit(int cv, byte bitNum, bool bitValue, ACK_CALLBACK callback);
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static void getLocoId(ACK_CALLBACK callback);
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private:
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struct LOCO {
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@ -38,6 +56,20 @@ private:
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static byte cv1(byte opcode, int cv);
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static byte cv2(int cv);
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// ACK MANAGER
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static ackOp const * ackManagerProg;
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static byte ackManagerByte;
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static byte ackManagerBitNum;
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static int ackManagerCv;
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static bool ackReceived;
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static int ackTriggerMilliamps;
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static ACK_CALLBACK ackManagerCallback;
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static void ackManagerSetup(int cv, byte bitNumOrbyteValue, ackOp const program[], ACK_CALLBACK callback);
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static void ackManagerLoop();
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// NMRA codes #
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static const byte SET_SPEED=0x3f;
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static const byte WRITE_BYTE_MAIN = 0xEC;
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@ -50,4 +82,5 @@ private:
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static const byte BIT_ON=0x08;
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static const byte BIT_OFF=0x00;
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};
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#endif
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@ -22,7 +22,6 @@ const char VERSION[]="99.666";
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void DCCEXParser::parse(Stream & stream,const char *com) {
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(void) EEPROM; // tell compiler not to warn thi is unused
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int p[MAX_PARAMS];
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bool result;
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int params=StringParser::parse(com+1,p,MAX_PARAMS);
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@ -146,9 +145,8 @@ void DCCEXParser::parse(Stream & stream,const char *com) {
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* returns: <r CALLBACKNUM|CALLBACKSUB|CV Value)
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* where VALUE is a number from 0-255 as read from the requested CV, or -1 if verificaiton read fails
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*/
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result=DCC::writeCVByte(p[0],p[1]);
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StringParser::send(stream,F("<r%d|%d|%d %d>"), p[2], p[3],p[0],result?p[1]:-1);
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if (!stashCallback(stream,p)) break;
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DCC::writeCVByte(p[0],p[1],callback_W);
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return;
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/***** WRITE CONFIGURATION VARIABLE BIT TO ENGINE DECODER ON PROGRAMMING TRACK ****/
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@ -166,9 +164,8 @@ void DCCEXParser::parse(Stream & stream,const char *com) {
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* returns: <r CALLBACKNUM|CALLBACKSUB|CV BIT VALUE)
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* where VALUE is a number from 0-1 as read from the requested CV bit, or -1 if verificaiton read fails
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*/
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result=DCC::writeCVBit(p[0],p[1],p[2]);
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StringParser::send(stream,F("<r%d|%d|%d %d %d>"), p[3],p[4], p[0],p[1],result?p[2]:-1);
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if (!stashCallback(stream,p)) break;
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DCC::writeCVBit(p[0],p[1],p[2],callback_B);
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return;
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/***** READ CONFIGURATION VARIABLE BYTE FROM ENGINE DECODER ON PROGRAMMING TRACK ****/
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@ -184,8 +181,8 @@ void DCCEXParser::parse(Stream & stream,const char *com) {
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* returns: <r CALLBACKNUM|CALLBACKSUB|CV VALUE)
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* where VALUE is a number from 0-255 as read from the requested CV, or -1 if read could not be verified
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*/
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StringParser::send(stream,F("<r%d|%d|%d %d>"),p[1],p[2],p[0],DCC::readCV(p[0]));
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if (!stashCallback(stream,p)) break;
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DCC::readCV(p[0],callback_R);
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return;
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||||
|
||||
/***** TURN ON POWER FROM MOTOR SHIELD TO TRACKS ****/
|
||||
|
|
@ -388,6 +385,28 @@ bool DCCEXParser::parseS(Stream & stream, int params, int p[]) {
|
|||
return false;
|
||||
}
|
||||
|
||||
int DCCEXParser::stashP[MAX_PARAMS];
|
||||
bool DCCEXParser::stashBusy=false;
|
||||
Stream & DCCEXParser::stashStream=Serial; // only to keep compiler happy
|
||||
|
||||
bool DCCEXParser::stashCallback(Stream & stream, int p[MAX_PARAMS]) {
|
||||
if (stashBusy) return false;
|
||||
stashBusy=true;
|
||||
stashStream=stream;
|
||||
memcpy(stashP,p,MAX_PARAMS*sizeof(p[0]));
|
||||
return true;
|
||||
}
|
||||
void DCCEXParser::callback_W(int result) {
|
||||
StringParser::send(stashStream,F("<r%d|%d|%d %d>"), stashP[2], stashP[3],stashP[0],result==1?stashP[1]:-1);
|
||||
stashBusy=false;
|
||||
}
|
||||
|
||||
void DCCEXParser::callback_B(int result) {
|
||||
StringParser::send(stashStream,F("<r%d|%d|%d %d %d>"), stashP[3],stashP[4], stashP[0],stashP[1],result==1?stashP[2]:-1);
|
||||
stashBusy=false;
|
||||
}
|
||||
void DCCEXParser::callback_R(int result) {
|
||||
StringParser::send(stashStream,F("<r%d|%d|%d %d>"),stashP[1],stashP[2],stashP[0],result);
|
||||
stashBusy=false;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -6,11 +6,20 @@ struct DCCEXParser
|
|||
|
||||
private:
|
||||
|
||||
static const int MAX_PARAMS=10; // longest command sent in
|
||||
|
||||
static bool parseT(Stream & stream, int params, int p[]);
|
||||
static bool parseZ(Stream & stream, int params, int p[]);
|
||||
static bool parseS(Stream & stream, int params, int p[]);
|
||||
|
||||
static const int MAX_PARAMS=10; // longest command sent in
|
||||
static int stashP[MAX_PARAMS];
|
||||
static bool stashBusy;
|
||||
static Stream & stashStream;
|
||||
static bool stashCallback(Stream & stream, int p[MAX_PARAMS]);
|
||||
static void callback_W(int result);
|
||||
static void callback_B(int result);
|
||||
static void callback_R(int result);
|
||||
|
||||
};
|
||||
|
||||
#define BOARD_NAME "not yet configured"
|
||||
|
|
|
|||
|
|
@ -137,6 +137,9 @@ bool DCCWaveform::interrupt1() {
|
|||
|
||||
}
|
||||
|
||||
void DCCWaveform::killRemainingRepeats() {
|
||||
transmitRepeats=0; // will go idle at end of current packet
|
||||
}
|
||||
|
||||
void DCCWaveform::interrupt2() {
|
||||
// set currentBit to be the next bit to be sent.
|
||||
|
|
@ -179,7 +182,7 @@ void DCCWaveform::interrupt2() {
|
|||
memcpy( transmitPacket, isMainTrack ? idlePacket : resetPacket, sizeof(idlePacket));
|
||||
transmitLength = sizeof(idlePacket);
|
||||
transmitRepeats = 0;
|
||||
sentResetsSincePacket++;
|
||||
if (sentResetsSincePacket<250) sentResetsSincePacket++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -210,45 +213,6 @@ void DCCWaveform::schedulePacket(const byte buffer[], byte byteCount, byte repea
|
|||
packetPending = true;
|
||||
}
|
||||
|
||||
// Wait until there is no packet pending, then make this pending
|
||||
bool DCCWaveform::schedulePacketWithAck(const byte buffer[], byte byteCount, byte repeats) {
|
||||
|
||||
if (isMainTrack) return false;
|
||||
int baseline=0;
|
||||
for (int i=0;i<ACK_BASELINE_SAMPLES;i++) {
|
||||
baseline += Hardware::getCurrentMilliamps(isMainTrack);
|
||||
}
|
||||
baseline/=ACK_BASELINE_SAMPLES;
|
||||
int upTrigger=baseline+ACK_MIN_PULSE;
|
||||
|
||||
|
||||
DIAG(F("\nACK baseline=%d upT=%d "),baseline, upTrigger);
|
||||
|
||||
schedulePacket(buffer,byteCount,repeats);
|
||||
while (packetPending); // wait until transmitter has started transmitting the message
|
||||
|
||||
unsigned long timeout = millis() + ACK_TIMEOUT;
|
||||
int maxCurrent = 0;
|
||||
bool result = false;
|
||||
int upsamples = 0;
|
||||
|
||||
|
||||
// Monitor looking for an ack signal rise of at least 60mA but keep going for the timeout
|
||||
while (timeout > millis()) {
|
||||
int current = Hardware::getCurrentMilliamps(isMainTrack);
|
||||
maxCurrent = max(maxCurrent, current);
|
||||
if (current>upTrigger) {
|
||||
result=true;
|
||||
upsamples++;
|
||||
}
|
||||
}
|
||||
|
||||
// The following DIAG is really useful as it can show how long and how far the
|
||||
// current changes during an ACK from the decoder.
|
||||
DIAG(F("ack=%d max=%d, up=%d"), result, maxCurrent, upsamples);
|
||||
return result;
|
||||
}
|
||||
|
||||
int DCCWaveform::getLastCurrent() {
|
||||
return lastCurrent;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -46,10 +46,9 @@ class DCCWaveform {
|
|||
void checkPowerOverload();
|
||||
int getLastCurrent();
|
||||
void schedulePacket(const byte buffer[], byte byteCount, byte repeats);
|
||||
bool schedulePacketWithAck(const byte buffer[], byte byteCount, byte repeats);
|
||||
volatile bool packetPending;
|
||||
volatile byte sentResetsSincePacket;
|
||||
|
||||
void killRemainingRepeats();
|
||||
|
||||
private:
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user