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0.3.5 M62429
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rob tillaart
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@ -2,7 +2,7 @@
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// FILE: M62429.cpp
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// AUTHOR: Rob Tillaart
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// PURPOSE: Arduino library for M62429 volume control IC
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// VERSION: 0.3.4
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// VERSION: 0.3.5
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// HISTORY: See M62429.cpp2
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// URL: https://github.com/RobTillaart/M62429
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@ -20,6 +20,7 @@
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// 0.3.3 2022-02-12 fix #10 add channel parameter to incr() and decr()
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// improve muteOn() + muteOff()
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// 0.3.4 2022-02-15 improve conditional delayMicroseconds()
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// 0.3.5 2022-02-21 add minimal M62429_RAW class
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#include "M62429.h"
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@ -184,5 +185,82 @@ void M62429::_setAttn(uint8_t channel, uint8_t attn)
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}
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/////////////////////////////////////////////////////////////////////////////
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//
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// M62429_RAW
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//
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void M62429_RAW::begin(uint8_t dataPin, uint8_t clockPin)
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{
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_data = dataPin;
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_clock = clockPin;
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pinMode(_data, OUTPUT);
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pinMode(_clock, OUTPUT);
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digitalWrite(_data, LOW);
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digitalWrite(_clock, LOW);
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setAttn(2, 0);
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}
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int M62429_RAW::getAttn(uint8_t channel)
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{
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return _attn[channel & 1];
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}
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void M62429_RAW::setAttn(uint8_t channel, uint8_t attn)
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{
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uint16_t databits = 0x0200; // D9 latch bit
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databits |= ((attn & 0x03) << 7); // D8 - D7
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databits |= (attn & 0x7C); // D6 - D2
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// channel == 2 -> both 0x00 is default
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if (channel == 0) databits |= 0x03; // D0 - D1
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if (channel == 1) databits |= 0x02; // D0 - D1
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// write D0 - D9
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for (uint8_t i = 0; i < 10; i++)
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{
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digitalWrite(_data, databits & 0x01);
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databits >>= 1;
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digitalWrite(_clock, HIGH);
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// Note if _clock pulses are long enough, _data pulses are too.
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#if M62429_CLOCK_DELAY > 0
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delayMicroseconds(M62429_CLOCK_DELAY);
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#endif
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digitalWrite(_data, LOW);
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digitalWrite(_clock, LOW);
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#if M62429_CLOCK_DELAY > 0
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delayMicroseconds(M62429_CLOCK_DELAY);
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#endif
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}
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// Send D10 HIGH bit (Latch signal)
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digitalWrite(_data, HIGH);
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digitalWrite(_clock, HIGH);
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#if M62429_CLOCK_DELAY > 0
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delayMicroseconds(M62429_CLOCK_DELAY);
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#endif
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// latch D10 signal requires _clock low before _data
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// make _data dummy write to keep timing constant
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digitalWrite(_data, HIGH);
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digitalWrite(_clock, LOW);
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#if M62429_CLOCK_DELAY > 0
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delayMicroseconds(M62429_CLOCK_DELAY);
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#endif
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digitalWrite(_data, LOW);
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#if M62429_CLOCK_DELAY > 0
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delayMicroseconds(M62429_CLOCK_DELAY);
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#endif
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// update cached values
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if (channel == 0) _attn[0] = attn;
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else if (channel == 1) _attn[1] = attn;
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else _attn[0] = _attn[1] = attn;
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}
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// -- END OF FILE --
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@ -3,14 +3,14 @@
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// FILE: M62429.h
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// AUTHOR: Rob Tillaart
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// PURPOSE: Arduino library for M62429 volume control IC
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// VERSION: 0.3.4
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// VERSION: 0.3.5
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// URL: https://github.com/RobTillaart/M62429
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#include "Arduino.h"
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#define M62429_VERSION (F("0.3.4"))
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#define M62429_VERSION (F("0.3.5"))
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// minimum pulse width CLOCK = 1.6 us (datasheet);
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@ -67,5 +67,23 @@ private:
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};
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class M62429_RAW
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{
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public:
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void begin(uint8_t dataPin, uint8_t clockPin);
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// channel = { 0, 1 }
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int getAttn(uint8_t channel);
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// channel = { 0, 1, 2 = both; attn = {0 .. 87 }
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void setAttn(uint8_t channel, uint8_t attn);
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private:
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uint8_t _attn[2] = { 0, 0 };
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uint8_t _data = 0;
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uint8_t _clock = 0;
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};
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// -- END OF FILE --
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@ -13,6 +13,8 @@ Arduino library for M62429 volume control IC.
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## Description
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#### M62429
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This library is used to set the attenuation (volume) of the
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M62429 IC a.k.a. FM62429.
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@ -24,8 +26,12 @@ takes time enough.
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For faster processors this define can be overruled runtime by setting it
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before including "M62429.h" or by defining it as command line parameter.
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#### M62429_RAW
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## Interface
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The library also implements a M62429_RAW class which has a minimalistic interface.
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## Interface M62429
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The interface is straightforward
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@ -78,6 +84,23 @@ can return one of the error codes.
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See examples
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## Interface M62429_RAW
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The interface is minimalistic.
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No parameter or other checks are made.
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Use **\#include "M62429.h"**
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- **void begin(uint8_t dataPin, uint8_t clockPin)** defines the clock and data pin.
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One has to create one object per IC.
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- **int getAttn(uint8_t channel)** channel is 0, 1 or 2 (both).
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In the latter case the attenuation of channel 0 is used as attenuation of both channels.
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- **void setAttn(uint8_t channel, uint8_t attn)**
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- channel = 0, 1, 2 = both
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- attenuation = 0 .. 87
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## Future
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#### Mixer
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@ -0,0 +1,69 @@
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//
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// FILE: M62429_RAW_performance.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: demo M62429_RAW class for IC FM62429
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#include "M62429.h"
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uint32_t start, stop;
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M62429_RAW AMP;
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void setup()
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.println();
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Serial.print("M62429_VERSION: ");
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Serial.println(M62429_VERSION);
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AMP.begin(4, 5);
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delay(100);
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start = micros();
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AMP.setAttn(0, 10);
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stop = micros();
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Serial.print("setAttn: \t");
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Serial.println(stop - start);
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delay(100);
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start = micros();
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AMP.setAttn(0, 10);
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stop = micros();
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Serial.print("setAttn: \t");
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Serial.println(stop - start);
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delay(100);
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start = micros();
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AMP.setAttn(0, 100);
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stop = micros();
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Serial.print("setAttn: \t");
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Serial.println(stop - start);
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delay(100);
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start = micros();
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AMP.setAttn(0, 100);
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stop = micros();
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Serial.print("setAttn: \t");
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Serial.println(stop - start);
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delay(100);
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start = micros();
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volatile uint8_t x = AMP.getAttn(0);
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stop = micros();
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Serial.print("getAttn: \t");
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Serial.println(stop - start);
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delay(100);
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Serial.println("\nDone...");
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}
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void loop()
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{
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}
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// -- END OF FILE --
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@ -0,0 +1,14 @@
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...\M62429_performance.ino
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UNO
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IDE 1.18.19
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...\M62429_RAW_performance.ino
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M62429_VERSION: 0.3.5
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setAttn: 192
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setAttn: 192
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setAttn: 200
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setAttn: 200
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getAttn: 0
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Done...
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@ -2,6 +2,7 @@
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# Data types (KEYWORD1)
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M62429 KEYWORD1
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M62429_RAW KEYWORD1
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# Methods and Functions (KEYWORD2)
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@ -17,6 +18,11 @@ muteOff KEYWORD2
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isMuted KEYWORD2
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# M62429_RAW
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getAttn KEYWORD2
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setAttn KEYWORD2
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# Constants (LITERAL1)
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M62429_VERSION LITERAL2
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M62429_MUTED LITERAL2
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@ -15,7 +15,7 @@
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"type": "git",
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"url": "https://github.com/RobTillaart/M62429.git"
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},
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"version": "0.3.4",
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"version": "0.3.5",
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"license": "MIT",
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"frameworks": "*",
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"platforms": "*",
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@ -1,5 +1,5 @@
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name=M62429
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version=0.3.4
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version=0.3.5
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author=Rob Tillaart <rob.tillaart@gmail.com>
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maintainer=Rob Tillaart <rob.tillaart@gmail.com>
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sentence=Arduino library for M62429 volume control IC
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