dani/CommandStation-EX
1
0
Fork 0
mirror of https://github.com/DCC-EX/CommandStation-EX.git synced 2024-11-23 16:16:13 +01:00
Code Releases Activity

Merge pull request #379 from DCC-EX/I2CDFplayer

Browse Source 
Update IO_I2CDFPlayer.h
This commit is contained in:
Ash-4 2023-12-30 14:58:58 -06:00 committed by GitHub
commit 22268aea3f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 73 additions and 138 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

211
IO_I2CDFPlayer.h
View File

@ -20,60 +20,26 @@
/*
* DFPlayer is an MP3 player module with an SD card holder. It also has an integrated
* amplifier, so it only needs a power supply and a speaker.
*
* This driver allows the device to be controlled through IODevice::write() and
* IODevice::writeAnalogue() calls.
*
* The driver is configured as follows:
*
* DFPlayer::create(firstVpin, nPins, Serialn);
*
* Where firstVpin is the first vpin reserved for reading the device,
* nPins is the number of pins to be allocated (max 5)
* and Serialn is the name of the Serial port connected to the DFPlayer (e.g. Serial1).
*
* Example:
* In halSetup function within myHal.cpp:
* DFPlayer::create(3500, 5, Serial1);
* or in myAutomation.h:
* HAL(DFPlayer, 3500, 5, Serial1)
*
* Writing an analogue value 1-2999 to the first pin (3500) will play the numbered file from the
* SD card; e.g. a value of 1 will play the first file, 2 for the second file etc.
* Writing an analogue value 0 to the first pin (3500) will stop the file playing;
* Writing an analogue value 0-30 to the second pin (3501) will set the volume;
* Writing a digital value of 1 to a pin will play the file corresponding to that pin, e.g.
the first file will be played by setting pin 3500, the second by setting pin 3501 etc.;
* Writing a digital value of 0 to any pin will stop the player;
* Reading a digital value from any pin will return true(1) if the player is playing, false(0) otherwise.
*
* From EX-RAIL, the following commands may be used:
* SET(3500) -- starts playing the first file (file 1) on the SD card
* SET(3501) -- starts playing the second file (file 2) on the SD card
* etc.
* RESET(3500) -- stops all playing on the player
* WAITFOR(3500) -- wait for the file currently being played by the player to complete
* SERVO(3500,2,Instant) -- plays file 2 at current volume
* SERVO(3501,20,Instant) -- Sets the volume to 20
*
* NB The DFPlayer's serial lines are not 5V safe, so connecting the Arduino TX directly
* to the DFPlayer's RX terminal will cause lots of noise over the speaker, or worse.
* A 1k resistor in series with the module's RX terminal will alleviate this.
*
* Files on the SD card are numbered according to their order in the directory on the
* card (as listed by the DIR command in Windows). This may not match the order of the files
* as displayed by Windows File Manager, which sorts the file names. It is suggested that
* files be copied into an empty SDcard in the desired order, one at a time.
*
* The driver now polls the device for its current status every second. Should the device
* fail to respond it will be marked off-line and its busy indicator cleared, to avoid
* lock-ups in automation scripts that are executing for a WAITFOR().
*
* This driver is a modified version of the IO_DFPlayer.h file
* *********************************************************************************************
*
* 2023, Added NXP SC16IS752 I2C Dual UART to enable the DFPlayer connection over the I2C bus
* The SC16IS752 has 64 bytes TX & RX FIFO buffer
* First version without interrupts from I2C UART and only RX/TX are used, interrupts may not be needed as the RX Fifo holds the reply
*
* First version without interrupts from I2C UART and only RX/TX are used, interrupts may not be
* needed as the RX Fifo holds the reply
*
* myHall.cpp configuration syntax:
*
* I2CDFPlayer::create(1st vPin, vPins, I2C address, UART ch, AM);
*
* Parameters:
* 1st vPin : First virtual pin that EX-Rail can control to play a sound, use PLAYSOUND command (alias of ANOUT)
* vPins : Total number of virtual pins allocated (only 1 vPin is supported)
* I2C Address : I2C address of the serial controller, in 0x format,
* UART ch : Indicating UART 0 or UART 1, values 0 or 1
* AM : audio mixer, values: 1 or 2 to select an audio amplifier, no effect if AM is not installed
*
* The vPin is also an pin that can be read, it indicated if the DFPlayer has finished playing a track
*
*/
@ -84,6 +50,7 @@
#include "I2CManager.h"
#include "DIAG.h"
// Debug and diagnostic defines, enable too many will result in slowing the driver
//#define DIAG_I2CDFplayer
//#define DIAG_I2CDFplayer_data
//#define DIAG_I2CDFplayer_reg
@ -92,13 +59,13 @@
class I2CDFPlayer : public IODevice {
private:
const uint8_t MAXVOLUME=30;
uint8_t RETRYCOUNT = 0x03;
bool _playing = false;
uint8_t _inputIndex = 0;
unsigned long _commandSendTime; // Time (us) that last transmit took place.
unsigned long _timeoutTime;
uint8_t _recvCMD; // Last received command code byte
bool _awaitingResponse = false;
uint8_t RETRYCOUNT = 0x03;
bool _awaitingResponse = false;
uint8_t _retryCounter = RETRYCOUNT; // Max retries before timing out
uint8_t _requestedVolumeLevel = MAXVOLUME;
uint8_t _currentVolume = MAXVOLUME;
@ -121,8 +88,6 @@ private:
uint8_t FIFO_RX_LEVEL = 0x00;
uint8_t RX_BUFFER = 0x00; // nr of bytes copied into _inbuffer
uint8_t FIFO_TX_LEVEL = 0x00;
//uint8_t DFPlayerValue = NONE; // Values for enhanced commands
//uint8_t DFPlayerCmd = NONE; // Enhanced commands
bool _playCmd = false;
bool _volCmd = false;
bool _folderCmd = false;
@ -135,15 +100,13 @@ private:
uint8_t _requestedEQValue = NORMAL;
uint8_t _currentEQvalue = NORMAL; // start equalizer value
bool _daconCmd = false;
uint8_t _outbuffer [11]; // DFPlayer command is 10 bytes + 1 byte register address & UART channel
uint8_t _inbuffer[10]; // expected DFPlayer return 10 bytes
//unsigned long SC16IS752_XTAL_FREQ = 1843200; // May need to change oscillator frequency to 14.7456Mhz (14745600) to allow for higher baud rates
unsigned long SC16IS752_XTAL_FREQ = 14745600; // Support for higher baud rates
//unsigned long SC16IS752_XTAL_FREQ = 1843200; // To support cheap eBay/AliExpress SC16IS752 boards
unsigned long SC16IS752_XTAL_FREQ = 14745600; // Support for higher baud rates, standard for modular EX-IO system
unsigned long test = 0;
public:
// Constructor
I2CDFPlayer(VPIN firstVpin, int nPins, I2CAddress i2cAddress, uint8_t UART_CH, uint8_t AM){
@ -201,14 +164,13 @@ public:
_playing = false;
_retryCounter = RETRYCOUNT;
} else { // timeout and retry protection and recovery of corrupt data frames from DFPlayer
DIAG(F("I2CDFPlayer: %s, DFPlayer timout, retry counter: %d on UART channel: 0x%x"), _I2CAddress.toString(), _retryCounter, _UART_CH);
#ifdef DIAG_I2CDFplayer_playing
DIAG(F("I2CDFPlayer: %s, DFPlayer timout, retry counter: %d on UART channel: 0x%x"), _I2CAddress.toString(), _retryCounter, _UART_CH);
#endif
_timeoutTime = currentMicros + 5000000UL; // Timeout if no response within 5 seconds// reset timeout
_awaitingResponse = false; // trigger sending a keep alive 0x42 in processOutgoing()
_retryCounter --; // decrement retry counter
_resetCmd = true; // queue a DFPlayer reset
_currentVolume = MAXVOLUME; // Resetting the DFPlayer makes the volume go to default i.e. MAXVOLUME
//sendPacket(0x0C,0,0); // Reset DFPlayer
resetRX_fifo(); // reset the RX fifo as it maybe poisoned
_retryCounter --; // decrement retry counter
resetRX_fifo(); // reset the RX fifo as it has corrupt data
}
}
}
@ -223,7 +185,7 @@ public:
}
// Check for incoming data on _serial, and update busy flag and other state accordingly
// Check for incoming data, and update busy flag and other state accordingly
void processIncoming(unsigned long currentMicros) {
// Expected message is in the form "7E FF 06 3D xx xx xx xx xx EF"
@ -335,15 +297,13 @@ public:
if (((int32_t)currentMicros - _commandSendTime) > 100000) {
if ( _resetCmd == true){
sendPacket(0x0C,0,0);
_resetCmd = false;
return; // after reset do not execute more commands, wait for the next time giving the DFPlayer time to reset
// A more saver/elegant way is to wait for the 'SD card online' packet (7E FF 06 3F 00 00 02 xx xx EF)
// this indicate that the DFPlayer is ready.This may take between 500ms and 1500ms depending on the
// number of tracks on the SD card
} else if (_currentVolume > _requestedVolumeLevel) {
// Change volume before changing song if volume is reducing.
_currentVolume = _requestedVolumeLevel;
sendPacket(0x06, 0x00, _currentVolume);
_resetCmd = false;
} else if(_volCmd == true) { // do the volme before palying a track
if(_requestedVolumeLevel >= 0 && _requestedVolumeLevel <= 30){
_currentVolume = _requestedVolumeLevel; // If _requestedVolumeLevel is out of range, sent _currentV1olume
}
sendPacket(0x06, 0x00, _currentVolume);
_volCmd = false;
} else if (_playCmd == true) {
// Change song
if (_requestedSong != -1) {
@ -396,10 +356,6 @@ public:
sendPacket(0x07,0x00,_currentEQvalue);
}
_eqCmd = false;
} else if (_currentVolume < _requestedVolumeLevel) {
// Change volume after changing song if volume is increasing.
_currentVolume = _requestedVolumeLevel;
sendPacket(0x06, 0x00, _currentVolume);
} else if ((int32_t)currentMicros - _commandSendTime > 1000000) {
// Poll device every second that other commands aren't being sent,
// to check if it's still connected and responding.
@ -418,34 +374,22 @@ public:
}
}
// Write with value 1 starts playing a song. The relative pin number is the file number.
// Write with value 0 stops playing.
// Write to a vPin will do nothing
void _write(VPIN vpin, int value) override {
if (_deviceState == DEVSTATE_FAILED) return;
int pin = vpin - _firstVpin;
if (value) {
// Value 1, start playing
#ifdef DIAG_IO
DIAG(F("I2CDFPlayer: Play %d"), pin+1);
DIAG(F("I2CDFPlayer: Writing to any vPin not supported"));
#endif
_requestedSong = pin+1;
_playing = true;
} else {
// Value 0, stop playing
#ifdef DIAG_IO
DIAG(F("I2CDFPlayer: Stop"));
#endif
_requestedSong = 0; // No song
_playing = false;
}
}
// WriteAnalogue on first pin uses the nominated value as a file number to start playing, if file number > 0.
// Volume may be specified as second parameter to writeAnalogue.
// If value is zero, the player stops playing.
// WriteAnalogue on second pin sets the output volume.
//
// Currently all WrtiteAnalogue to be done on vpin 2, will move to vpin 0 when fully implemented
// WriteAnalogue to be done on first vpin
//
//void _writeAnalogue(VPIN vpin, int value, uint8_t volume=0, uint16_t=0) override {
void _writeAnalogue(VPIN vpin, int value, uint8_t volume=0, uint16_t cmd=0) override {
@ -454,32 +398,15 @@ public:
DIAG(F("I2CDFPlayer: VPIN:%u FileNo:%d Volume:%d Command:0x%x"), vpin, value, volume, cmd);
#endif
uint8_t pin = vpin - _firstVpin;
// Validate parameter.
if (volume > MAXVOLUME) volume = MAXVOLUME;
if (pin == 0) {
// Play track
if (value > 0) {
if (volume > 0)
_requestedVolumeLevel = volume;
_requestedSong = value;
_playing = true;
} else {
_requestedSong = 0; // stop playing
_playing = false;
}
} else if (pin == 1) {
// Set volume (0-30)
_requestedVolumeLevel = value;
} else if (pin == 2) { // Enhanced DFPlayer commands
if (pin == 0) { // Enhanced DFPlayer commands, do nothing if not vPin 0
// Read command and value
switch (cmd){
//case NONE:
// DFPlayerCmd = cmd;
// break;
case PLAY:
_playCmd = true;
_playCmd = true;
_volCmd = true;
_requestedSong = value;
_requestedVolumeLevel = volume;
_playing = true;
@ -536,31 +463,33 @@ public:
}
}
// A read on any pin indicates whether the player is still playing.
int _read(VPIN) override {
// A read on any pin indicates if the player is still playing.
int _read(VPIN vpin) override {
if (_deviceState == DEVSTATE_FAILED) return false;
return _playing;
}
uint8_t pin = vpin - _firstVpin;
if (pin == 0) { // Do nothing if not vPin 0
return _playing;
}
}
void _display() override {
DIAG(F("I2CDFPlayer Configured on Vpins:%u-%u %S"), _firstVpin, _firstVpin+_nPins-1,
(_deviceState==DEVSTATE_FAILED) ? F("OFFLINE") : F(""));
}
private:
private:
// DFPlayer command frame
// 7E FF 06 0F 00 01 01 xx xx EF
// 0 -> 7E is start code
// 1 -> FF is version
// 2 -> 06 is length
// 3 -> 0F is command
// 4 -> 00 is no receive
// 0 -> 7E is start code
// 1 -> FF is version
// 2 -> 06 is length
// 3 -> 0F is command
// 4 -> 00 is no receive
// 5~6 -> 01 01 is argument
// 7~8 -> checksum = 0 - ( FF+06+0F+00+01+01 )
// 9 -> EF is end code
// 9 -> EF is end code
//void sendPacket(uint8_t command, uint16_t arg = 0)
void sendPacket(uint8_t command, uint8_t arg1 = 0, uint8_t arg2 = 0)
{
void sendPacket(uint8_t command, uint8_t arg1 = 0, uint8_t arg2 = 0) {
FIFO_TX_LEVEL = 0; // Reset FIFO_TX_LEVEL
uint8_t out[] = {
0x7E,
@ -618,7 +547,6 @@ private:
void setChecksum(uint8_t* out)
{
uint16_t sum = calcChecksum(out);
out[7] = (sum >> 8);
out[8] = (sum & 0xff);
}
@ -628,6 +556,9 @@ private:
// First a software reset
// Enable FIFO and clear TX & RX FIFO
// Need to set the following registers
// IOCONTROL set bit 1 and 2 to 0 indicating that they are GPIO
// IODIR set all bit to 1 indicating al are output
// IOSTATE set only bit 0 to 1 for UART 0, or only bit 1 for UART 1 //
// LCR bit 7=0 divisor latch (clock division registers DLH & DLL, they store 16 bit divisor),
// WORD_LEN, STOP_BIT, PARITY_ENA and PARITY_TYPE
// MCR bit 7=0 clock divisor devide-by-1 clock input
@ -647,8 +578,13 @@ private:
UART_WriteRegister(REG_IOCONTROL, TEMP_REG_VAL);
TEMP_REG_VAL = 0xFF; //Set all pins as output
UART_WriteRegister(REG_IODIR, TEMP_REG_VAL);
TEMP_REG_VAL = 0x01; //Set initial value as high
//TEMP_REG_VAL = 0x00; //Set initial value as low
UART_ReadRegister(REG_IOSTATE); // Read current state as not to overwrite the other GPIO pins
TEMP_REG_VAL = _inbuffer[0];
if (_UART_CH == 0){
TEMP_REG_VAL |= (0x01 << _UART_CH); //Set GPIO pin 0 to high
} else { // must be UART 1
TEMP_REG_VAL |= (0x01 << _UART_CH); //Set GPIO pin 1 to high
}
UART_WriteRegister(REG_IOSTATE, TEMP_REG_VAL);
TEMP_REG_VAL = 0x07; // Reset FIFO, clear RX & TX FIFO
UART_WriteRegister(REG_FCR, TEMP_REG_VAL);
@ -678,12 +614,13 @@ private:
// Read the Receive FIFO Level register (RXLVL), return a single unsigned integer
// of nr of characters in the RX FIFO, bit 6:0, 7 not used, set to zero
// value from 0 (0x00) to 64 (0x40) Only display if RX FIFO has data
// The RX fifo level is used to check if there are enough bytes to process a frame
void RX_fifo_lvl(){
UART_ReadRegister(REG_RXLV);
FIFO_RX_LEVEL = _inbuffer[0];
#ifdef DIAG_I2CDFplayer
//if (FIFO_RX_LEVEL > 0){
if (FIFO_RX_LEVEL > 0 && FIFO_RX_LEVEL < 10){
if (FIFO_RX_LEVEL > 0){
//if (FIFO_RX_LEVEL > 0 && FIFO_RX_LEVEL < 10){
DIAG(F("SC16IS752: At I2C: %s, UART channel: 0x%x, FIFO_RX_LEVEL: 0d%d"), _I2CAddress.toString(), _UART_CH, _inbuffer[0]);
}
#endif
@ -776,7 +713,6 @@ enum : uint8_t{
// DFPlayer commands and values
enum : uint8_t{
//NONE = 0x00, // redundant
PLAY = 0x0F,
VOL = 0x06,
FOLDER = 0x2B, // Not a DFPlayer command, used to set folder nr where audio file is
@ -784,7 +720,6 @@ enum : uint8_t{
STOPPLAY = 0x16,
EQ = 0x07, // Set equaliser, require parameter NORMAL, POP, ROCK, JAZZ, CLASSIC or BASS
RESET = 0x0C,
//DACOFF = 0x1A, // Require 3rd byte to 0x00 in processOutgoing()
DACON = 0x1A, // Not a DFLayer command,need to sent 0x1A and 3rd byte to 0x01 in processOutgoing()
NORMAL = 0x00, // Equalizer parameters
POP = 0x01,