Commit df244490 authored by Alisson Claudino's avatar Alisson Claudino

ADD: New Firmware code Writen in C++ using pio

parent 7356fb8e
/**************************************************************************/
/*!
@file Adafruit_ADS1015.cpp
@author K.Townsend (Adafruit Industries)
@license BSD (see license.txt)
Driver for the ADS1015/ADS1115 ADC
This is a library for the Adafruit MPL115A2 breakout
----> https://www.adafruit.com/products/???
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
@section HISTORY
v1.0 - First release
*/
/**************************************************************************/
#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include <Wire.h>
#include "Adafruit_ADS1015.h"
/**************************************************************************/
/*!
@brief Abstract away platform differences in Arduino wire library
*/
/**************************************************************************/
static uint8_t i2cread(void) {
#if ARDUINO >= 100
return Wire.read();
#else
return Wire.receive();
#endif
}
/**************************************************************************/
/*!
@brief Abstract away platform differences in Arduino wire library
*/
/**************************************************************************/
static void i2cwrite(uint8_t x) {
#if ARDUINO >= 100
Wire.write((uint8_t)x);
#else
Wire.send(x);
#endif
}
/**************************************************************************/
/*!
@brief Writes 16-bits to the specified destination register
*/
/**************************************************************************/
static void writeRegister(uint8_t i2cAddress, uint8_t reg, uint16_t value) {
Wire.beginTransmission(i2cAddress);
i2cwrite((uint8_t)reg);
i2cwrite((uint8_t)(value>>8));
i2cwrite((uint8_t)(value & 0xFF));
Wire.endTransmission();
}
/**************************************************************************/
/*!
@brief Writes 16-bits to the specified destination register
*/
/**************************************************************************/
static uint16_t readRegister(uint8_t i2cAddress, uint8_t reg) {
Wire.beginTransmission(i2cAddress);
i2cwrite(ADS1015_REG_POINTER_CONVERT);
Wire.endTransmission();
Wire.requestFrom(i2cAddress, (uint8_t)2);
return ((i2cread() << 8) | i2cread());
}
/**************************************************************************/
/*!
@brief Instantiates a new ADS1015 class w/appropriate properties
*/
/**************************************************************************/
Adafruit_ADS1015::Adafruit_ADS1015(uint8_t i2cAddress)
{
m_i2cAddress = i2cAddress;
m_conversionDelay = ADS1015_CONVERSIONDELAY;
m_bitShift = 4;
m_gain = GAIN_TWOTHIRDS; /* +/- 6.144V range (limited to VDD +0.3V max!) */
}
/**************************************************************************/
/*!
@brief Instantiates a new ADS1115 class w/appropriate properties
*/
/**************************************************************************/
Adafruit_ADS1115::Adafruit_ADS1115(uint8_t i2cAddress)
{
m_i2cAddress = i2cAddress;
m_conversionDelay = ADS1115_CONVERSIONDELAY;
m_bitShift = 0;
m_gain = GAIN_TWOTHIRDS; /* +/- 6.144V range (limited to VDD +0.3V max!) */
}
/**************************************************************************/
/*!
@brief Sets up the HW (reads coefficients values, etc.)
*/
/**************************************************************************/
void Adafruit_ADS1015::begin() {
Wire.begin();
}
/**************************************************************************/
/*!
@brief Sets the gain and input voltage range
*/
/**************************************************************************/
void Adafruit_ADS1015::setGain(adsGain_t gain)
{
m_gain = gain;
}
/**************************************************************************/
/*!
@brief Gets a gain and input voltage range
*/
/**************************************************************************/
adsGain_t Adafruit_ADS1015::getGain()
{
return m_gain;
}
/**************************************************************************/
/*!
@brief Gets a single-ended ADC reading from the specified channel
*/
/**************************************************************************/
uint16_t Adafruit_ADS1015::readADC_SingleEnded(uint8_t channel) {
if (channel > 3)
{
return 0;
}
// Start with default values
uint16_t config = ADS1015_REG_CONFIG_CQUE_NONE | // Disable the comparator (default val)
ADS1015_REG_CONFIG_CLAT_NONLAT | // Non-latching (default val)
ADS1015_REG_CONFIG_CPOL_ACTVLOW | // Alert/Rdy active low (default val)
ADS1015_REG_CONFIG_CMODE_TRAD | // Traditional comparator (default val)
ADS1015_REG_CONFIG_DR_1600SPS | // 1600 samples per second (default)
ADS1015_REG_CONFIG_MODE_SINGLE; // Single-shot mode (default)
// Set PGA/voltage range
config |= m_gain;
// Set single-ended input channel
switch (channel)
{
case (0):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_0;
break;
case (1):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_1;
break;
case (2):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_2;
break;
case (3):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_3;
break;
}
// Set 'start single-conversion' bit
config |= ADS1015_REG_CONFIG_OS_SINGLE;
// Write config register to the ADC
writeRegister(m_i2cAddress, ADS1015_REG_POINTER_CONFIG, config);
// Wait for the conversion to complete
delay(m_conversionDelay);
// Read the conversion results
// Shift 12-bit results right 4 bits for the ADS1015
return readRegister(m_i2cAddress, ADS1015_REG_POINTER_CONVERT) >> m_bitShift;
}
/**************************************************************************/
/*!
@brief Reads the conversion results, measuring the voltage
difference between the P (AIN0) and N (AIN1) input. Generates
a signed value since the difference can be either
positive or negative.
*/
/**************************************************************************/
int16_t Adafruit_ADS1015::readADC_Differential_0_1() {
// Start with default values
uint16_t config = ADS1015_REG_CONFIG_CQUE_NONE | // Disable the comparator (default val)
ADS1015_REG_CONFIG_CLAT_NONLAT | // Non-latching (default val)
ADS1015_REG_CONFIG_CPOL_ACTVLOW | // Alert/Rdy active low (default val)
ADS1015_REG_CONFIG_CMODE_TRAD | // Traditional comparator (default val)
ADS1015_REG_CONFIG_DR_1600SPS | // 1600 samples per second (default)
ADS1015_REG_CONFIG_MODE_SINGLE; // Single-shot mode (default)
// Set PGA/voltage range
config |= m_gain;
// Set channels
config |= ADS1015_REG_CONFIG_MUX_DIFF_0_1; // AIN0 = P, AIN1 = N
// Set 'start single-conversion' bit
config |= ADS1015_REG_CONFIG_OS_SINGLE;
// Write config register to the ADC
writeRegister(m_i2cAddress, ADS1015_REG_POINTER_CONFIG, config);
// Wait for the conversion to complete
delay(m_conversionDelay);
// Read the conversion results
uint16_t res = readRegister(m_i2cAddress, ADS1015_REG_POINTER_CONVERT) >> m_bitShift;
if (m_bitShift == 0)
{
return (int16_t)res;
}
else
{
// Shift 12-bit results right 4 bits for the ADS1015,
// making sure we keep the sign bit intact
if (res > 0x07FF)
{
// negative number - extend the sign to 16th bit
res |= 0xF000;
}
return (int16_t)res;
}
}
/**************************************************************************/
/*!
@brief Reads the conversion results, measuring the voltage
difference between the P (AIN2) and N (AIN3) input. Generates
a signed value since the difference can be either
positive or negative.
*/
/**************************************************************************/
int16_t Adafruit_ADS1015::readADC_Differential_2_3() {
// Start with default values
uint16_t config = ADS1015_REG_CONFIG_CQUE_NONE | // Disable the comparator (default val)
ADS1015_REG_CONFIG_CLAT_NONLAT | // Non-latching (default val)
ADS1015_REG_CONFIG_CPOL_ACTVLOW | // Alert/Rdy active low (default val)
ADS1015_REG_CONFIG_CMODE_TRAD | // Traditional comparator (default val)
ADS1015_REG_CONFIG_DR_1600SPS | // 1600 samples per second (default)
ADS1015_REG_CONFIG_MODE_SINGLE; // Single-shot mode (default)
// Set PGA/voltage range
config |= m_gain;
// Set channels
config |= ADS1015_REG_CONFIG_MUX_DIFF_2_3; // AIN2 = P, AIN3 = N
// Set 'start single-conversion' bit
config |= ADS1015_REG_CONFIG_OS_SINGLE;
// Write config register to the ADC
writeRegister(m_i2cAddress, ADS1015_REG_POINTER_CONFIG, config);
// Wait for the conversion to complete
delay(m_conversionDelay);
// Read the conversion results
uint16_t res = readRegister(m_i2cAddress, ADS1015_REG_POINTER_CONVERT) >> m_bitShift;
if (m_bitShift == 0)
{
return (int16_t)res;
}
else
{
// Shift 12-bit results right 4 bits for the ADS1015,
// making sure we keep the sign bit intact
if (res > 0x07FF)
{
// negative number - extend the sign to 16th bit
res |= 0xF000;
}
return (int16_t)res;
}
}
/**************************************************************************/
/*!
@brief Sets up the comparator to operate in basic mode, causing the
ALERT/RDY pin to assert (go from high to low) when the ADC
value exceeds the specified threshold.
This will also set the ADC in continuous conversion mode.
*/
/**************************************************************************/
void Adafruit_ADS1015::startComparator_SingleEnded(uint8_t channel, int16_t threshold)
{
// Start with default values
uint16_t config = ADS1015_REG_CONFIG_CQUE_1CONV | // Comparator enabled and asserts on 1 match
ADS1015_REG_CONFIG_CLAT_LATCH | // Latching mode
ADS1015_REG_CONFIG_CPOL_ACTVLOW | // Alert/Rdy active low (default val)
ADS1015_REG_CONFIG_CMODE_TRAD | // Traditional comparator (default val)
ADS1015_REG_CONFIG_DR_1600SPS | // 1600 samples per second (default)
ADS1015_REG_CONFIG_MODE_CONTIN | // Continuous conversion mode
ADS1015_REG_CONFIG_MODE_CONTIN; // Continuous conversion mode
// Set PGA/voltage range
config |= m_gain;
// Set single-ended input channel
switch (channel)
{
case (0):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_0;
break;
case (1):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_1;
break;
case (2):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_2;
break;
case (3):
config |= ADS1015_REG_CONFIG_MUX_SINGLE_3;
break;
}
// Set the high threshold register
// Shift 12-bit results left 4 bits for the ADS1015
writeRegister(m_i2cAddress, ADS1015_REG_POINTER_HITHRESH, threshold << m_bitShift);
// Write config register to the ADC
writeRegister(m_i2cAddress, ADS1015_REG_POINTER_CONFIG, config);
}
/**************************************************************************/
/*!
@brief In order to clear the comparator, we need to read the
conversion results. This function reads the last conversion
results without changing the config value.
*/
/**************************************************************************/
int16_t Adafruit_ADS1015::getLastConversionResults()
{
// Wait for the conversion to complete
delay(m_conversionDelay);
// Read the conversion results
uint16_t res = readRegister(m_i2cAddress, ADS1015_REG_POINTER_CONVERT) >> m_bitShift;
if (m_bitShift == 0)
{
return (int16_t)res;
}
else
{
// Shift 12-bit results right 4 bits for the ADS1015,
// making sure we keep the sign bit intact
if (res > 0x07FF)
{
// negative number - extend the sign to 16th bit
res |= 0xF000;
}
return (int16_t)res;
}
}
/**************************************************************************/
/*!
@file Adafruit_ADS1015.h
@author K. Townsend (Adafruit Industries)
@license BSD (see license.txt)
This is a library for the Adafruit ADS1015 breakout board
----> https://www.adafruit.com/products/???
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
@section HISTORY
v1.0 - First release
v1.1 - Added ADS1115 support - W. Earl
*/
/**************************************************************************/
#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include <Wire.h>
/*=========================================================================
I2C ADDRESS/BITS
-----------------------------------------------------------------------*/
#define ADS1015_ADDRESS (0x48) // 1001 000 (ADDR = GND)
/*=========================================================================*/
/*=========================================================================
CONVERSION DELAY (in mS)
-----------------------------------------------------------------------*/
#define ADS1015_CONVERSIONDELAY (1)
#define ADS1115_CONVERSIONDELAY (8)
/*=========================================================================*/
/*=========================================================================
POINTER REGISTER
-----------------------------------------------------------------------*/
#define ADS1015_REG_POINTER_MASK (0x03)
#define ADS1015_REG_POINTER_CONVERT (0x00)
#define ADS1015_REG_POINTER_CONFIG (0x01)
#define ADS1015_REG_POINTER_LOWTHRESH (0x02)
#define ADS1015_REG_POINTER_HITHRESH (0x03)
/*=========================================================================*/
/*=========================================================================
CONFIG REGISTER
-----------------------------------------------------------------------*/
#define ADS1015_REG_CONFIG_OS_MASK (0x8000)
#define ADS1015_REG_CONFIG_OS_SINGLE (0x8000) // Write: Set to start a single-conversion
#define ADS1015_REG_CONFIG_OS_BUSY (0x0000) // Read: Bit = 0 when conversion is in progress
#define ADS1015_REG_CONFIG_OS_NOTBUSY (0x8000) // Read: Bit = 1 when device is not performing a conversion
#define ADS1015_REG_CONFIG_MUX_MASK (0x7000)
#define ADS1015_REG_CONFIG_MUX_DIFF_0_1 (0x0000) // Differential P = AIN0, N = AIN1 (default)
#define ADS1015_REG_CONFIG_MUX_DIFF_0_3 (0x1000) // Differential P = AIN0, N = AIN3
#define ADS1015_REG_CONFIG_MUX_DIFF_1_3 (0x2000) // Differential P = AIN1, N = AIN3
#define ADS1015_REG_CONFIG_MUX_DIFF_2_3 (0x3000) // Differential P = AIN2, N = AIN3
#define ADS1015_REG_CONFIG_MUX_SINGLE_0 (0x4000) // Single-ended AIN0
#define ADS1015_REG_CONFIG_MUX_SINGLE_1 (0x5000) // Single-ended AIN1
#define ADS1015_REG_CONFIG_MUX_SINGLE_2 (0x6000) // Single-ended AIN2
#define ADS1015_REG_CONFIG_MUX_SINGLE_3 (0x7000) // Single-ended AIN3
#define ADS1015_REG_CONFIG_PGA_MASK (0x0E00)
#define ADS1015_REG_CONFIG_PGA_6_144V (0x0000) // +/-6.144V range = Gain 2/3
#define ADS1015_REG_CONFIG_PGA_4_096V (0x0200) // +/-4.096V range = Gain 1
#define ADS1015_REG_CONFIG_PGA_2_048V (0x0400) // +/-2.048V range = Gain 2 (default)
#define ADS1015_REG_CONFIG_PGA_1_024V (0x0600) // +/-1.024V range = Gain 4
#define ADS1015_REG_CONFIG_PGA_0_512V (0x0800) // +/-0.512V range = Gain 8
#define ADS1015_REG_CONFIG_PGA_0_256V (0x0A00) // +/-0.256V range = Gain 16
#define ADS1015_REG_CONFIG_MODE_MASK (0x0100)
#define ADS1015_REG_CONFIG_MODE_CONTIN (0x0000) // Continuous conversion mode
#define ADS1015_REG_CONFIG_MODE_SINGLE (0x0100) // Power-down single-shot mode (default)
#define ADS1015_REG_CONFIG_DR_MASK (0x00E0)
#define ADS1015_REG_CONFIG_DR_128SPS (0x0000) // 128 samples per second
#define ADS1015_REG_CONFIG_DR_250SPS (0x0020) // 250 samples per second
#define ADS1015_REG_CONFIG_DR_490SPS (0x0040) // 490 samples per second
#define ADS1015_REG_CONFIG_DR_920SPS (0x0060) // 920 samples per second
#define ADS1015_REG_CONFIG_DR_1600SPS (0x0080) // 1600 samples per second (default)
#define ADS1015_REG_CONFIG_DR_2400SPS (0x00A0) // 2400 samples per second
#define ADS1015_REG_CONFIG_DR_3300SPS (0x00C0) // 3300 samples per second
#define ADS1015_REG_CONFIG_CMODE_MASK (0x0010)
#define ADS1015_REG_CONFIG_CMODE_TRAD (0x0000) // Traditional comparator with hysteresis (default)
#define ADS1015_REG_CONFIG_CMODE_WINDOW (0x0010) // Window comparator
#define ADS1015_REG_CONFIG_CPOL_MASK (0x0008)
#define ADS1015_REG_CONFIG_CPOL_ACTVLOW (0x0000) // ALERT/RDY pin is low when active (default)
#define ADS1015_REG_CONFIG_CPOL_ACTVHI (0x0008) // ALERT/RDY pin is high when active
#define ADS1015_REG_CONFIG_CLAT_MASK (0x0004) // Determines if ALERT/RDY pin latches once asserted
#define ADS1015_REG_CONFIG_CLAT_NONLAT (0x0000) // Non-latching comparator (default)
#define ADS1015_REG_CONFIG_CLAT_LATCH (0x0004) // Latching comparator
#define ADS1015_REG_CONFIG_CQUE_MASK (0x0003)
#define ADS1015_REG_CONFIG_CQUE_1CONV (0x0000) // Assert ALERT/RDY after one conversions
#define ADS1015_REG_CONFIG_CQUE_2CONV (0x0001) // Assert ALERT/RDY after two conversions
#define ADS1015_REG_CONFIG_CQUE_4CONV (0x0002) // Assert ALERT/RDY after four conversions
#define ADS1015_REG_CONFIG_CQUE_NONE (0x0003) // Disable the comparator and put ALERT/RDY in high state (default)
/*=========================================================================*/
typedef enum
{
GAIN_TWOTHIRDS = ADS1015_REG_CONFIG_PGA_6_144V,
GAIN_ONE = ADS1015_REG_CONFIG_PGA_4_096V,
GAIN_TWO = ADS1015_REG_CONFIG_PGA_2_048V,
GAIN_FOUR = ADS1015_REG_CONFIG_PGA_1_024V,
GAIN_EIGHT = ADS1015_REG_CONFIG_PGA_0_512V,
GAIN_SIXTEEN = ADS1015_REG_CONFIG_PGA_0_256V
} adsGain_t;
class Adafruit_ADS1015
{
protected:
// Instance-specific properties
uint8_t m_i2cAddress;
uint8_t m_conversionDelay;
uint8_t m_bitShift;
adsGain_t m_gain;
public:
Adafruit_ADS1015(uint8_t i2cAddress = ADS1015_ADDRESS);
void begin(void);
uint16_t readADC_SingleEnded(uint8_t channel);
int16_t readADC_Differential_0_1(void);
int16_t readADC_Differential_2_3(void);
void startComparator_SingleEnded(uint8_t channel, int16_t threshold);
int16_t getLastConversionResults();
void setGain(adsGain_t gain);
adsGain_t getGain(void);
private:
};
// Derive from ADS1105 & override construction to set properties
class Adafruit_ADS1115 : public Adafruit_ADS1015
{
public:
Adafruit_ADS1115(uint8_t i2cAddress = ADS1015_ADDRESS);
private:
};
This directory is intended for the project specific (private) libraries.
PlatformIO will compile them to static libraries and link to executable file.
The source code of each library should be placed in separate directory, like
"lib/private_lib/[here are source files]".
For example, see how can be organized `Foo` and `Bar` libraries:
|--lib
| |
| |--Bar
| | |--docs
| | |--examples
| | |--src
| | |- Bar.c
| | |- Bar.h
| | |- library.json (optional, custom build options, etc) http://docs.platformio.org/page/librarymanager/config.html
| |
| |--Foo
| | |- Foo.c
| | |- Foo.h
| |
| |- readme.txt --> THIS FILE
|
|- platformio.ini
|--src
|- main.c
Then in `src/main.c` you should use:
#include <Foo.h>
#include <Bar.h>
// rest H/C/CPP code
PlatformIO will find your libraries automatically, configure preprocessor's
include paths and build them.
More information about PlatformIO Library Dependency Finder
- http://docs.platformio.org/page/librarymanager/ldf.html
; PlatformIO Project Configuration File
;
; Build options: build flags, source filter
; Upload options: custom upload port, speed and extra flags
; Library options: dependencies, extra library storages
; Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; http://docs.platformio.org/page/projectconf.html
[env:nanoatmega328]
platform = atmelavr
board = nanoatmega328
framework = arduino
#include <Wire.h>
#include <Adafruit_ADS1015.h>
Adafruit_ADS1115 ads0(0x48);
Adafruit_ADS1115 ads1(0x49);
int16_t adc0, adc1, adc2, adc3, adc4, adc5, adc6, adc7;
void setup(void)
{
Serial.begin(115200);
//Serial.println("Hello!");
//Serial.println("Getting single-ended readings from AIN0..3");
//Serial.println("ADC Range: +/- 6.144V (1 bit = 3mV/ADS1015, 0.1875mV/ADS1115)");
ads0.begin();
ads1.begin();
}
void loop(void)
{
adc0 = ads0.readADC_SingleEnded(0);
adc1 = ads0.readADC_SingleEnded(1);
adc2 = ads0.readADC_SingleEnded(2);
/*adc3 = ads0.readADC_SingleEnded(3);
adc4 = ads1.readADC_SingleEnded(0);
adc5 = ads1.readADC_SingleEnded(1);
adc6 = ads1.readADC_SingleEnded(2);
adc7 = ads1.readADC_SingleEnded(3);*/
Serial.print(adc0);
Serial.print(" ");
Serial.print(adc1);
Serial.print(" ");
Serial.print(adc2);
/*Serial.print(" ");
Serial.print(adc3);
Serial.print(" ");
Serial.print(adc4);
Serial.print(" ");
Serial.print(adc5);
Serial.print(" ");
Serial.print(adc6);
Serial.print(" ");
Serial.print(adc7);
Serial.print(" ");
Serial.print(millis());*/
Serial.print("\n");
while(millis()%100!=0);
}
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