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DmxRdmLib.cpp
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/*
espDMX v2 library
Copyright (c) 2016, Matthew Tong
https://github.com/mtongnz/espDMX
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program.
If not, see http://www.gnu.org/licenses/
*/
#include "DmxRdmLib.h"
espDMX dmxA(0);
espDMX dmxB(1);
void dmx_interrupt_handler(void);
uint16_t dmx_get_tx_fifo_room(dmx_t* dmx);
void dmx_interrupt_enable(dmx_t* dmx);
void dmx_interrupt_arm(dmx_t* dmx);
void dmx_interrupt_disarm(dmx_t* dmx);
void rdm_interrupt_arm(dmx_t* dmx);
void rdm_interrupt_disarm();
void dmx_set_baudrate(dmx_t* dmx, int baud_rate);
void dmx_set_conf(dmx_t* dmx);
void dmx_set_chans(dmx_t* dmx, uint8_t* data, uint16_t numChans, uint16_t startChan);
void dmx_buffer_update(dmx_t* dmx, uint16_t num);
int dmx_state(dmx_t* dmx);
void rx_flush();
void dmx_flush(dmx_t* dmx);
void dmx_set_buffer(dmx_t* dmx, byte* buf);
void dmx_uninit(dmx_t* dmx);
static bool timer1Set = false;
static bool rdmInUse = false;
static bool rdmBreak = false;
static bool rdm_pause = false;
static bool dmx_input = false;
static uint8_t rxUser;
static unsigned long rdmTimer = 0;
void ICACHE_RAM_ATTR dmx_interrupt_handler(void) {
// stop other interrupts for TX
noInterrupts();
if(dmxA._dmx && U0IS & (1 << UIFE)) { // TX0 Fifo Empty
U0IC = (1 << UIFE); // clear status flag
dmxA._transmit();
}
if(dmxB._dmx && U1IS & (1 << UIFE)) { // TX1 Fifo Empty
U1IC = (1 << UIFE); // clear status flag
dmxB._transmit();
}
interrupts();
// RDM replies
if (rdmInUse) {
if ((U0IS & (1 << UIBD)) || ( U0IS & (1 << UIFR))) { // RX0 Break Detect
U0IC = (1 << UIBD) | (1 << UIFR); // clear status flags
rdmBreak = true;
}
if(U0IS & (1 << UIFF)) { // RX0 Fifo Full
if (rxUser == 0)
dmxA.rdmReceived();
else
dmxB.rdmReceived();
}
// DMX input
} else if (dmx_input) {
//NOTE: different while() approach for DMX vs RDM ????
// Data received
while (U0IS & (1 << UIFF)) {
if (rxUser == 0)
dmxA.dmxReceived((uint8_t)USF(0));
else
dmxB.dmxReceived((uint8_t)USF(0));
// ??? Inside while ???
U0IC = (1 << UIFF); // Clear interrupt
}
// Break/Frame error detect
if ((U0IS & (1 << UIBD)) || ( U0IS & (1 << UIFR))) { // RX0 Break Detect
U0IC = (1 << UIBD) | (1 << UIFR); // clear status flags
if (rxUser == 0)
dmxA.inputBreak();
else
dmxB.inputBreak();
}
}
}
//static void uart_ignore_char(char c) { (void) c; return; }
uint16_t dmx_get_tx_fifo_room(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return 0;
return UART_TX_FIFO_SIZE - ((USS(dmx->dmx_nr) >> USTXC) & 0xff);
}
void dmx_flush(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
uint32_t tmp = 0x00000000;
tmp |= (1 << UCTXRST);
// Clear TX Fifo
USC0(dmx->dmx_nr) |= (tmp);
USC0(dmx->dmx_nr) &= ~(tmp);
}
void rx_flush() {
uint32_t tmp = 0x00000000;
tmp |= (1 << UCRXRST);
// Clear RX Fifo
USC0(0) |= (tmp);
USC0(0) &= ~(tmp);
}
// TX and RX are both inverted together
void dmx_set_conf(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
USC0(dmx->dmx_nr) = DMX_TX_CONF;
uint32_t mask = ((1 << UCTXI) | (1 << UCRXI));
if (dmx->invert) {
USC0(dmx->dmx_nr) |= mask;
} else {
USC0(dmx->dmx_nr) &= ~mask;
}
}
void dmx_interrupt_enable(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
// Clear all interupt bits
USIC(dmx->dmx_nr) = 0x1ff;
if (dmx->dmx_nr == 1) {
// Set TX Fifo Empty trigger point
USC1(1) = (0 << UCFET);
// UART at 250k for DMX data
USD(1) = (ESP8266_CLOCK / DMX_TX_BAUD);
dmx_set_conf(dmx);
}
// Attach out interupt handler function
ETS_UART_INTR_ATTACH(&dmx_interrupt_handler, NULL);
// Enable UART Interrupts
ETS_UART_INTR_ENABLE();
// UART0 setup
if (!timer1Set) {
timer1Set = true;
// UART at 250k for DMX data
USD(0) = (ESP8266_CLOCK / DMX_TX_BAUD);
dmx_set_conf(dmx);
USC1(0) = (127 << UCFFT);
// Disable RX Fifo Full & Break Detect & Frame Error Interupts
//USIE(0) &= ~((1 << UIFF) | (1 << UIBD) | (1 << UIFR));
}
}
void dmx_interrupt_arm(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
// Clear all interupt bits
USIC(dmx->dmx_nr) = 0xffff;
// Enable TX Fifo Empty Interupt
USIE(dmx->dmx_nr) |= (1 << UIFE);
}
void dmx_interrupt_disarm(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
USIE(dmx->dmx_nr) &= ~(1 << UIFE);
}
void rdm_interrupt_arm(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
// Enable RX Fifo Full & Break Detect & Frame Error Interupts
USIE(0) |= (1 << UIFF) | (1 << UIBD) | (1 << UIFR);
digitalWrite(dmx->dirPin, LOW);
rdmBreak = false;
rxUser = dmx->dmx_nr;
dmx->rx_pos = 0;
dmx->rdm_response.clear();
// Timer1 start
// T1L = ((RDM_LISTEN_TIME)& 0x7FFFFF);
// TEIE |= TEIE1;//edge int enable
rdmTimer = micros() + 3000;
}
void rdm_interrupt_disarm() {
// Disable RX Fifo Full & Break Detect & Frame Error Interupts
USIE(0) &= ~((1 << UIFF) | (1 << UIBD) | (1 << UIFR));
// TEIE &= ~TEIE1;//edge int disable
// T1L = 0;
rdmInUse = false;
}
void dmx_set_baudrate(dmx_t* dmx, int baud_rate) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
USD(dmx->dmx_nr) = (ESP8266_CLOCK / baud_rate);
}
void dmx_clear_buffer(dmx_t* dmx) {
memset(dmx->data, 0, 512);
dmx->numChans = dmx->minChans;
}
void dmx_tx_set(dmx_t* dmx, uint8_t level) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
if (dmx->invert) {
digitalWrite(dmx->txPin, !level);
} else {
digitalWrite(dmx->txPin, level);
}
// Always make output AFTER setting the level
pinMode(dmx->txPin, OUTPUT);
}
void dmx_set_buffer(dmx_t* dmx, byte* buf) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
if (dmx->ownBuffer)
os_free(dmx->data);
if (buf == NULL) {
buf = (byte*) os_zalloc(sizeof(byte) * 512);
if(buf == NULL) {
dmx->ownBuffer = 0;
return;
}
dmx->ownBuffer = 1;
} else
dmx->ownBuffer = 0;
dmx->data = buf;
}
void dmx_uninit(dmx_t* dmx) {
if(dmx == 0 || dmx->state == DMX_NOT_INIT)
return;
dmx_interrupt_disarm(dmx);
dmx_flush(dmx);
// Go to idle
dmx_tx_set(dmx, HIGH);
// Set DMX direction to input so no garbage is sent out
if (dmx->dirPin != 255)
digitalWrite(dmx->dirPin, LOW);
if (dmx->dmx_nr == rxUser) {
rdm_interrupt_disarm();
rx_flush();
}
if (dmx->rdm_enable) {
dmx->rdm_enable = 0;
digitalWrite(dmx->dirPin, HIGH);
dmx->todManID = (uint16_t*)realloc(dmx->todManID, 0);
dmx->todDevID = (uint32_t*)realloc(dmx->todDevID, 0);
dmx->rdmCallBack = NULL;
dmx->todCallBack = NULL;
}
os_free(dmx->data1);
dmx->data1 = NULL;
dmx->isInput = false;
dmx->inputCallBack = NULL;
if (dmx->ownBuffer) {
os_free(dmx->data);
dmx->ownBuffer = 0;
}
}
int dmx_get_state(dmx_t* dmx) {
return dmx->state;
}
void dmx_set_state(dmx_t* dmx, int state) {
dmx->state = state;
}
// start is indexed from 1
void dmx_set_chans(dmx_t* dmx, uint8_t* data, uint16_t num, uint16_t start) {
if(dmx == NULL || dmx->state == DMX_NOT_INIT)
return;
dmx->started = true;
dmx->newDMX = true;
if (data == NULL || start == 0 || start > 512 || num == 0)
return;
uint16_t newNum = start - 1 + num;
if (newNum > 512) {
int16_t difference = newNum - 512;
newNum -= difference;
num -= difference;
}
// Find the highest channel with new data
for (; num > 0; newNum--, num--) {
if (dmx->data[newNum-1] != data[num-1])
break;
}
// Put data into our buffer
memcpy(&(dmx->data[start-1]), data, num);
// Recalc high watermark
if (newNum > dmx->numChans)
dmx->numChans = newNum;
}
void dmx_buffer_update(dmx_t* dmx, uint16_t num) {
if(dmx == NULL || dmx->state == DMX_NOT_INIT)
return;
dmx->started = true;
dmx->newDMX = true;
// We don't need to recalc the buffer high watermark
if(num <= dmx->numChans)
return;
if (num > 512)
num = 512;
// Find the highest channel with non-zero data
for (; num > dmx->numChans; num--) {
if (dmx->data[num-1] != 0)
break;
}
if (num > dmx->numChans)
dmx->numChans = num;
}
espDMX::espDMX(uint8_t dmx_nr) :
_dmx_nr(dmx_nr), _dmx(0) {
}
espDMX::~espDMX(void) {
end();
}
void espDMX::begin(uint8_t dir, byte* buf, uint16_t min_chans, bool invert) {
if(_dmx == NULL) {
_dmx = (dmx_t*) os_zalloc(sizeof(dmx_t));
if(_dmx == NULL) {
return;
}
// internal tx buffer
_dmx->data1 = (byte*) os_zalloc(sizeof(byte) * 512);
if(_dmx->data1 == NULL) {
os_free(_dmx);
_dmx = NULL;
return;
}
// Initialize variables
_dmx->dmx_nr = _dmx_nr;
_dmx->txPin = (_dmx->dmx_nr == 0) ? 1 : 2;
_dmx->state = DMX_STOP;
_dmx->txChan = 0;
_dmx->invert = invert;
_dmx->minChans = min_chans; // for buffer clear
_dmx->numChans = min_chans; // high watermark
_dmx->full_uni_time = 0;
_dmx->last_dmx_time = 0;
_dmx->led_timer = 0;
_dmx->newDMX = false;
_dmx->started = false;
_dmx->rdm_enable = false;
_dmx->dirPin = dir; // 255 is used to indicate no dir pin
_dmx->rdmCallBack = NULL;
_dmx->todCallBack = NULL;
_dmx->isInput = false;
_dmx->inputCallBack = NULL;
// TX output set to idle
dmx_tx_set(_dmx, HIGH);
// Set direction to OUTPUT
if (_dmx->dirPin != 255) {
pinMode(_dmx->dirPin, OUTPUT);
digitalWrite(_dmx->dirPin, HIGH);
}
}
if (_dmx) {
dmx_set_buffer(_dmx, buf);
dmx_clear_buffer(_dmx);
dmx_interrupt_enable(_dmx);
}
}
void espDMX::setBuffer(byte* buf) {
dmx_set_buffer(_dmx, buf);
}
void espDMX::pause() {
dmx_interrupt_disarm(_dmx);
dmx_flush(_dmx);
if (_dmx->dirPin != 255)
digitalWrite(_dmx->dirPin, HIGH);
}
void espDMX::unPause() {
if(_dmx == 0 || _dmx->state == DMX_NOT_INIT)
return;
_dmx->newDMX = true;
_dmx->state = DMX_STOP;
if (_dmx->dirPin != 255)
digitalWrite(_dmx->dirPin, HIGH);
}
void espDMX::end() {
if (_dmx == 0)
return;
dmx_uninit(_dmx);
os_free(_dmx);
_dmx = 0;
}
void espDMX::setChans(byte *data, uint16_t numChans, uint16_t startChan) {
dmx_set_chans(_dmx, data, numChans, startChan);
}
void espDMX::chanUpdate(uint16_t numChans) {
dmx_buffer_update(_dmx, numChans);
}
void espDMX::clearChans() {
if(_dmx == 0 || _dmx->state == DMX_NOT_INIT)
return;
dmx_clear_buffer(_dmx);
}
byte *espDMX::getChans() {
if(_dmx == 0 || _dmx->state == DMX_NOT_INIT)
return 0;
return _dmx->data;
}
uint16_t espDMX::numChans() {
if(_dmx == 0 || _dmx->state == DMX_NOT_INIT)
return 0;
return _dmx->numChans;
}
void espDMX::ledIntensity(uint8_t newIntensity) {
if(_dmx == 0 || _dmx->state == DMX_NOT_INIT)
return;
_dmx->ledIntensity = newIntensity;
}
void ICACHE_RAM_ATTR espDMX::_transmit(void) {
// If we have data to transmit
if (_dmx->txChan < _dmx->txSize) {
// Keep the number of bytes sent low to keep it quick
// uint16_t txSize = dmx->txSize - dmx->txChan;
// txSize = (txSize > DMX_MAX_BYTES_PER_INT) ? DMX_MAX_BYTES_PER_INT : txSize;
// for(; txSize; --txSize)
// NOTE: txFill ??? Send one byte and let ISR do the rest ???
USF(_dmx->dmx_nr) = _dmx->data1[_dmx->txChan++];
// dmx_interrupt_arm(dmx);
// If all bytes are transmitted
} else {
//dmx_interrupt_disarm(_dmx);
USIE(_dmx->dmx_nr) &= ~(1 << UIFE);
if (_dmx->state == DMX_TX) {
_dmx->state = DMX_STOP;
} else if (!rdm_pause) { // if (_dmx->state == RDM_TX) {
_dmx->state = RDM_RX;
rdm_interrupt_arm(_dmx);
}
}
}
bool espDMX::rdmSendCommand(rdm_data* data) {
if (_dmx == 0 || !_dmx->rdm_enable || _dmx->rdm_queue.isFull())
return false;
if (system_get_free_heap_size() < 2000)
return false;
byte packetLength = data->packet.Length;
uint16_t checkSum = 0x0000;
for (byte x = 0; x < packetLength; x++) {
checkSum += data->buffer[x];
}
checkSum = checkSum % 0x10000;
data->buffer[packetLength] = checkSum >> 8;
data->buffer[packetLength + 1] = checkSum & 0xFF;
bool r = _dmx->rdm_queue.push(data);
return r;
}
bool espDMX::rdmSendCommand(uint8_t cmdClass, uint16_t pid, uint16_t manID, uint32_t devID, byte* data, uint16_t dataLength, uint16_t subDev) {
if (_dmx == 0 || !_dmx->rdm_enable)
return false;
rdm_data command;
// Note that all ints are stored little endian so we need to flip them
// to get correct byte order
command.packet.StartCode = (E120_SC_RDM << 8) | E120_SC_SUB_MESSAGE;
command.packet.Length = 24 + dataLength;
command.packet.DestMan = manID;
command.packet.DestDev = devID;
command.packet.SourceMan = _dmx->rdm_source_man;
command.packet.SourceDev = _dmx->rdm_source_dev;
command.packet.TransNo = _dmx->rdm_trans_no++;
command.packet.ResponseType = 0x01;
command.packet.MsgCount = 0;
command.packet.SubDev = subDev;
command.packet.CmdClass = cmdClass;
command.packet.PID = pid;
command.packet.DataLength = dataLength;
if (dataLength > 0)
memcpy(command.packet.Data, data, dataLength);
return rdmSendCommand(&command);
}
void espDMX::rdmReceived() {
if (_dmx == 0 || _dmx->state != RDM_RX)
return;
while((USS(0) >> USRXC) & 0x7F) {
_dmx->rdm_response.buffer[_dmx->rx_pos] = USF(0);
// Handle multiple 0xFE to start discovery response
if (_dmx->rx_pos == 1 && _dmx->rdm_response.buffer[0] == 0xFE && _dmx->rdm_response.buffer[1] == 0xFE)
continue;
// Handle break & MAB
if (rdmBreak || _dmx->rdm_response.buffer[0] == 0) {
_dmx->rx_pos = 0;
rdmBreak = false;
continue;
}
_dmx->rx_pos++;
// Get packet size and adjust timer accordingly
// unsigned long newTime = micros() + (44 * _dmx->rdm_response.buffer[2]);
// if (newTime > rdmTimer)
// rdmTimer = newTime;
// if (_dmx->rx_pos == 3 && _dmx->rdm_response.buffer[0] == 0xCC && _dmx->rdm_response.buffer[1] == 0x01) {
// uint16_t newTime = (_dmx->rdm_response.buffer[2] * RDM_BYTE_TIME);
// if (newTime > T1L)
// T1L = (newTime & 0x7FFFFF);
// }
}
// Clear interupt flags
USIC(0) = USIS(0);
}
void espDMX::rdmDiscovery(uint8_t discType) {
if (!_dmx || !_dmx->rdm_enable)
return;
// default
if (discType == RDM_DISCOVERY_TOD_WIPE) {
_dmx->tod_size = 0;
_dmx->todManID = (uint16_t*)realloc(_dmx->todManID, 0);
_dmx->todDevID = (uint32_t*)realloc(_dmx->todDevID, 0);
_dmx->tod_status = RDM_TOD_NOT_READY;
discType = RDM_DISCOVERY_FULL;
}
byte startEnd[12] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
if (discType == RDM_DISCOVERY_FULL) {
_dmx->tod_changed = true;
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_UN_MUTE, 0xFFFF, 0xFFFFFFFF);
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_UNIQUE_BRANCH, 0xFFFF, 0xFFFFFFFF, startEnd, 12);
// discType == RDM_DISCOVERY_INCREMENTAL
} else {
if (_dmx->rdm_discovery_pos >= _dmx->tod_size) {
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_UNIQUE_BRANCH, 0xFFFF, 0xFFFFFFFF, startEnd, 12);
} else {
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_MUTE, _dmx->todManID[_dmx->rdm_discovery_pos], _dmx->todDevID[_dmx->rdm_discovery_pos]);
_dmx->rdm_discovery_pos++;
}
}
}
void espDMX::rdmDiscoveryResponse(rdm_data* c) {
// If we received nothing, branch is empty
if (_dmx->rx_pos == 0) {
byte a[12] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
// If it's a reply to the top branch, all devices are found
if (memcmp(c->packet.Data, a, 12) == 0) {
_dmx->rdm_last_discovery = millis();
_dmx->rdm_discovery_pos = 0;
_dmx->tod_status = RDM_TOD_READY;
if (_dmx->tod_changed) {
_dmx->tod_changed = false;
if (_dmx->todCallBack)
_dmx->todCallBack();
}
// Issue un-mute to all so no devices hide on the next incremental discovery
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_UN_MUTE, 0xFFFF, 0xFFFFFFFF);
}
return;
}
// Check for correct length & no frame errors
if (_dmx->rdm_response.discovery.headerFE == 0xFE && _dmx->rdm_response.discovery.headerAA == 0xAA) {
uint16_t _manID;
uint32_t _devID;
byte* maskedDevID = _dmx->rdm_response.discovery.maskedDevID;
byte* maskedChkSm = _dmx->rdm_response.discovery.maskedChecksum;
_manID = (maskedDevID[0] & maskedDevID[1]);
_manID = (_manID << 8) + (maskedDevID[2] & maskedDevID[3]);
_devID = (maskedDevID[4] & maskedDevID[5]);
_devID = (_devID << 8) + (maskedDevID[6] & maskedDevID[7]);
_devID = (_devID << 8) + (maskedDevID[8] & maskedDevID[9]);
_devID = (_devID << 8) + (maskedDevID[10] & maskedDevID[11]);
// Calculate checksum
uint16_t checkSum = 0;
for (uint8_t x = 0; x < 12; x++)
checkSum += maskedDevID[x];
checkSum = checkSum % 10000;
uint16_t mChk = (maskedChkSm[0] & maskedChkSm[1]);
mChk = (mChk << 8) | (maskedChkSm[2] & maskedChkSm[3]);
// If the checksum is valid
if (checkSum == mChk) {
// Send mute command to check device is there & to mute from further discovery requests
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_MUTE, _manID, _devID);
// Recheck the branch
c->packet.TransNo = _dmx->rdm_trans_no++;
rdmSendCommand(c);
return;
}
}
// If we didn't get a valid response, split branch and try again
uint64_t m = 0;
uint64_t n = 0;
uint64_t e = 0;
// Get current end address
for (uint8_t x = 6; x < 12; x++)
e = (e << 8) | c->packet.Data[x];
// Calculate the midpoint & midpoint + 1
e = e << 16;
m = e >> 1;
n = m + 1;
// Check if we're at the bottom branch
if (n == e) {
uint16_t a = __builtin_bswap16(e >> 32);
uint32_t b = __builtin_bswap32(e & 0xFFFFFFFF);
// Send mute command to check device is there & to mute from further discovery requests
rdmSendCommand(E120_DISCOVERY_COMMAND, E120_DISC_MUTE, a, b);
return;
}
// Bitswap to fix endianess
m = __builtin_bswap64(m);
e = __builtin_bswap64(e);
n = __builtin_bswap64(n);
// If we reach max queue size, wait for a bit and try again
while (_dmx->rdm_queue.space() < 2) {
yield();
}
// Send command for lower half
memcpy(&c->packet.Data[6], &m, 6);
c->packet.TransNo = _dmx->rdm_trans_no++;
rdmSendCommand(c);
// Send command for upper half
memcpy(c->packet.Data, &n, 6);
memcpy(&c->packet.Data[6], &e, 6);
c->packet.TransNo = _dmx->rdm_trans_no++;
rdmSendCommand(c);
}
void espDMX::rdmMuteResponse(rdm_data* c) {
_dmx->rdm_response.endianFlip();
// Check for correct length & ACK response
if (_dmx->rx_pos > 15) {
if (c->packet.DestMan == _dmx->rdm_response.packet.SourceMan && c->packet.DestDev == _dmx->rdm_response.packet.SourceDev && _dmx->rdm_response.packet.ResponseType == E120_RESPONSE_TYPE_ACK) {
uint16_t checkSum = 0;
uint8_t x = 0;
for (; x < _dmx->rdm_response.packet.Length; x++)
checkSum += _dmx->rdm_response.buffer[x];
checkSum = checkSum % 10000;
// Check the checksum
if (_dmx->rdm_response.buffer[x] == (checkSum >> 8) && _dmx->rdm_response.buffer[x+1] == (checkSum & 0xFF)) {
// Is the device already in our UID list
for (uint16_t x = 0; x < _dmx->tod_size; x++) {
if (_dmx->todManID[x] == _dmx->rdm_response.packet.SourceMan && _dmx->todDevID[x] == _dmx->rdm_response.packet.SourceDev) {
if (x == _dmx->rdm_discovery_pos)
_dmx->rdm_discovery_pos++;
return;
}
}
// Add the deivce to our UID list
_dmx->todManID = (uint16_t*)realloc(_dmx->todManID, (_dmx->tod_size+1) * sizeof(uint16_t));
_dmx->todDevID = (uint32_t*)realloc(_dmx->todDevID, (_dmx->tod_size+1) * sizeof(uint32_t));
_dmx->todManID[_dmx->tod_size] = _dmx->rdm_response.packet.SourceMan;
_dmx->todDevID[_dmx->tod_size] = _dmx->rdm_response.packet.SourceDev;
_dmx->tod_size++;
_dmx->tod_changed = true;
}
}
// No response received
} else {
// Delete devices from TOD if they didn't respond
for (uint16_t x = 0; x < _dmx->tod_size; x++) {
if (_dmx->todManID[x] == c->packet.DestMan && _dmx->todDevID[x] == c->packet.DestDev) {
// Shift all our devices up the list
for (uint16_t y = x+1; y < _dmx->tod_size; y++) {
_dmx->todManID[y-1] = _dmx->todManID[y];
_dmx->todDevID[y-1] = _dmx->todDevID[y];
}
_dmx->tod_size--;
_dmx->tod_changed = true;
_dmx->rdm_discovery_pos = 0;
_dmx->todManID = (uint16_t*)realloc(_dmx->todManID, _dmx->tod_size * sizeof(uint16_t));
_dmx->todDevID = (uint32_t*)realloc(_dmx->todDevID, _dmx->tod_size * sizeof(uint32_t));
return;
}
}
}
}
void espDMX::rdmRXTimeout() {
if (_dmx == 0)
return;
if (rdm_pause) {
rdm_interrupt_disarm();
dmx_flush(_dmx);
_dmx->state = DMX_STOP;
digitalWrite(_dmx->dirPin, HIGH);
//dmx_transmit(_dmx);
return;
}
// Get remaining data
rdmReceived();
_dmx->state = DMX_STOP;
digitalWrite(_dmx->dirPin, HIGH);
rdm_interrupt_disarm();
rdm_data c;
_dmx->rdm_queue.pop(&c);
//dmx_transmit(_dmx);
if (c.packet.CmdClass == E120_DISCOVERY_COMMAND) {
if (c.packet.PID == E120_DISC_UNIQUE_BRANCH) {
rdmDiscoveryResponse(&c);
return;
} else if (c.packet.PID == E120_DISC_MUTE) {
rdmMuteResponse(&c);
return;
} else if (c.packet.PID == E120_DISC_UN_MUTE) {
// There shouldn't be a response to un mute commands
return;
}
}
if (_dmx->rdmCallBack)
_dmx->rdmCallBack(&_dmx->rdm_response);
}
void espDMX::rdmEnable(uint16_t ManID, uint32_t DevID) {
if (_dmx == 0 || _dmx->dirPin == 255 || dmx_input)
return;
// RDM Variables
_dmx->rx_pos = 0;
_dmx->rdm_trans_no = 0;
_dmx->rdm_discovery = false;
_dmx->rdm_last_discovery = 0;
_dmx->todManID = NULL;
_dmx->todDevID = NULL;
_dmx->tod_size = 0;
_dmx->tod_status = RDM_TOD_NOT_READY;
_dmx->rdm_discovery_pos = 0;
_dmx->rdmCallBack = NULL;
_dmx->rdm_enable = true;
_dmx->rdm_queue.init();
// Setup direction pin
digitalWrite(_dmx->dirPin, HIGH);
// Enable RX pin (same for both universes)
pinMode(3, SPECIAL);
_dmx->rdm_source_man = ManID;
_dmx->rdm_source_dev = DevID;
rdmDiscovery();
}
void espDMX::rdmDisable() {
if (_dmx == 0)
return;
if (rdmInUse && rxUser == _dmx->dmx_nr) {
rdmInUse = false;
_dmx->state = DMX_STOP;
}
_dmx->rdm_enable = false;
digitalWrite(_dmx->dirPin, HIGH);
}
uint8_t espDMX::todStatus() {
if (_dmx == 0 || !_dmx->rdm_enable)
return 0;
return _dmx->tod_status;
}
uint16_t espDMX::todCount() {
if (_dmx == 0 || !_dmx->rdm_enable)
return 0;
return _dmx->tod_size;
}
uint16_t* espDMX::todMan() {
if (_dmx == 0 || !_dmx->rdm_enable)
return NULL;
return _dmx->todManID;
}
uint32_t* espDMX::todDev() {
if (_dmx == 0 || !_dmx->rdm_enable)
return NULL;
return _dmx->todDevID;
}
uint16_t espDMX::todMan(uint16_t n) {
if (_dmx == 0 || !_dmx->rdm_enable)
return 0;
return _dmx->todManID[n];
}
uint32_t espDMX::todDev(uint16_t n) {
if (_dmx == 0 || !_dmx->rdm_enable)
return 0;
return _dmx->todDevID[n];
}
void espDMX::rdmSetCallBack(rdmCallBackFunc callback) {
if (_dmx == 0)
return;
_dmx->rdmCallBack = callback;
}
void espDMX::todSetCallBack(todCallBackFunc callback) {
if (_dmx == 0)
return;
_dmx->todCallBack = callback;
}