m3x1m0m
/
UppSense2017
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Browse Source

Started with the DAC driver.

software_develop
Maximilian Stiefel 8 years ago
parent
a6a8552c7a
commit
9e1c6a5940
3 changed files with 196 additions and 0 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 10
      software/app/application.cpp
  2. 138
      software/app/dac101c085.cpp
  3. 48
      software/app/dac101c085.h

10
software/app/application.cpp
View File

@ -2,6 +2,7 @@
#include <SmingCore/SmingCore.h>
#include <SmingCore/HardwareSerial.h>
#include "ads101x.h"
#include "dac101c085.h"
#include "sensor_hub.h"
#include "sensor_settings.h"
#include "double_buffer.h"
@ -13,6 +14,7 @@ static const int HUB_PERIOD = 5;
static const int ADC_TIMEBASE = 250;
static const int ADC_PERIOD = 5;
static const uint8_t ADC_ADDRESS = 0x48;
static const uint8_t DAC_ADDRESS = 0x0C;
using namespace rijnfel;
@ -22,6 +24,7 @@ void STAGotIP(IPAddress ip, IPAddress mask, IPAddress gateway);
Timer procTimer;
ads::cADS101x adc(0, ADC_ADDRESS);
dac::cDAC101C085 mydac(1, DAC_ADDRESS);
uint8_t channel = 0;
cSensorHub hub(HUB_PERIOD);
@ -66,6 +69,13 @@ void init() {
cWebInterface::GetInstance()->Start();
procTimer.initializeMs(HUB_PERIOD, updateSensorHub).start();
mydac.checkDev();
Serial.print("Write DAC reg: ");
Serial.print(mydac.changeSettings(dac::eOpMode::NORMAL, 1023));
Serial.println("");
Serial.print("Read out DAC regs: ");
Serial.print(mydac.ReadSettings());
Serial.println("");
}
void STADisconnect(String ssid, uint8_t ssid_len, uint8_t bssid[6],

138
software/app/dac101c085.cpp
View File

@ -0,0 +1,138 @@
//----------------------------------------------------------------------------------------------------------------------------
// Project: Uppsense
// Name: dac101c085.cpp
// Author: Maximilian Stiefel
// Date: 08.08.2017
//
// Description:
//
//----------------------------------------------------------------------------------------------------------------------------
//-------------------------------------Libraries------------------------------------------------------------------------------
#include "dac101c085.h"
#include <SmingCore/Wire.h>
#include <SmingCore/SmingCore.h>
//-------------------------------------Namespaces-----------------------------------------------------------------------------
namespace rijnfel {
namespace dac {
//-------------------------------------Constructor----------------------------------------------------------------------------
cDAC101C085::cDAC101C085(uint8_t i_number, uint8_t i_address):
m_number(i_number), m_address(i_address)
{}
//-------------------------------------Destructor-----------------------------------------------------------------------------
cDAC101C085::~cDAC101C085()
{}
//-------------------------------------checkDev-------------------------------------------------------------------------------
void cDAC101C085::checkDev()
{
// Vars
byte error = 0;
// Action
#if DEBUG_LEVEL == 1
Serial.print("DAC: Scanning address 0x");
Serial.print(m_address, HEX);
Serial.println(".");
#endif
Wire.beginTransmission(m_address);
error = Wire.endTransmission();
I2CError(error); // Pass to error parser
}
//-------------------------------------changeSettings-------------------------------------------------------------------------
uint8_t cDAC101C085::changeSettings(enum eOpMode mode, uint16_t val)
{
// Vars
uint16_t settings = 0;
// Action
if( val > 1023)
return 0; // This is illegal
settings = val << D_BITS_POS; // First two bits have to be 0
switch(mode)
{
case NORMAL:
settings += 0b00 << PD_BITS_POS;
break;
case PULL_DOWN_2K5:
settings += 0b01 << PD_BITS_POS;
break;
case PULL_DOWN_100K:
settings += 0b10 << PD_BITS_POS;
break;
case HIGH_IMPEDANCE:
settings += 0b11 << PD_BITS_POS;
break;
}
return WriteSettings(settings);
}
//-------------------------------------WriteSettings--------------------------------------------------------------------------
uint8_t cDAC101C085::WriteSettings(uint16_t settings)
{
// Vars
uint8_t error = 0;
// Action
Wire.beginTransmission(m_address);
Wire.write( (uint8_t) (settings >> 8) ); // Most significant byte
Wire.write( (uint8_t) (settings & 0xFF) ); // Least significant byte
error = Wire.endTransmission();
Serial.print(settings);
return I2CError(error); // Pass to error parser
}
//-------------------------------------ReadSettings--------------------------------------------------------------------------
uint16_t cDAC101C085::ReadSettings(void)
{
// Vars
uint8_t number = 0;
uint16_t settings = 0;
// Action
number = Wire.requestFrom(m_address, (uint8_t) 2);
if( number != 2)
{
Serial.print("DAC: Trying to read 2 bytes from 0x");
Serial.print(m_address, HEX);
Serial.println(" went wrong.");
return 0;
}
settings = (uint16_t) Wire.read() << 8; // Most significant byte
settings += (uint16_t) Wire.read(); // Least significant byte
return settings;
}
//-------------------------------------I2CError-------------------------------------------------------------------------------
uint8_t cDAC101C085::I2CError(uint8_t error)
{
switch(error)
{
case 0:
#if DEBUG_LEVEL == 1
Serial.println("DAC: I2C device found. Transmission successful.");
#endif
break;
case 2:
Serial.print("DAC: Received NACK after address from 0x.");
Serial.print(m_address, HEX);
Serial.println(".");
break;
case 3:
Serial.print("DAC: Received NACK after data from 0x.");
Serial.print(m_address, HEX);
Serial.println(".");
break;
case 4:
Serial.print("DAC: Unknow error at 0x.");
Serial.print(m_address, HEX);
Serial.println(".");
break;
}
return ( (error == 0) ? 1 : 0 );
}
}
}

48
software/app/dac101c085.h
View File

@ -0,0 +1,48 @@
//----------------------------------------------------------------------------------------------------------------------------
// Project: Uppsense
// Name: dac101c085.h
// Author: Maximilian Stiefel
// Date: 08.08.2017
//
// Description:
//
//----------------------------------------------------------------------------------------------------------------------------
#ifndef APP_DAC101C085_H_
#define APP_DAC101C085_H_
//-------------------------------------Libraries------------------------------------------------------------------------------
#include <stdint.h>
//-------------------------------------Defines--------------------------------------------------------------------------------
#define DEBUG_LEVEL 1 // 1 a lot debugging output, else rare debugging output
#define PD_BITS_POS 14 // Position of power down bits
#define D_BITS_POS 2 // Position of data bits
//-------------------------------------Namespaces-----------------------------------------------------------------------------
namespace rijnfel {
namespace dac {
//-------------------------------------Enums----------------------------------------------------------------------------------
enum eOpMode {NORMAL, PULL_DOWN_2K5, PULL_DOWN_100K, HIGH_IMPEDANCE};
//-------------------------------------cDAC101085-----------------------------------------------------------------------------
class cDAC101C085
{
public:
cDAC101C085(uint8_t number, uint8_t i_address); // Constructor
~cDAC101C085(); // Destructor
void checkDev(); // Check if device is available and alive
uint16_t ReadSettings(void);
uint8_t WriteSettings(uint16_t settings);
uint8_t changeSettings(enum eOpMode mode, uint16_t val);
private:
uint8_t m_number; // Which of the dacs is it?
uint8_t m_address;
uint8_t I2CError(uint8_t error);
};
}
}
#endif /* APP_DAC101C085_H_ */
Write Preview
Loading…
Cancel
Save