4848 *
4949 * Version | Date | Developer | Comments
5050 * ------- | ---------- | ----------- | --------
51+ * 1.0.8 | 2020-12-01 | SV-Zanshin | Issue #72, allow dynamic memory allocation instead of EEPROM
5152 * 1.0.7 | 2020-06-30 | SV-Zanshin | Issue #58, changed formatting to use clang-format
5253 * 1.0.6 | 2020-06-29 | SV-Zanshin | Issue #57, changed case of functions "Alert..."
5354 * 1.0.5 | 2020-05-03 | SV-Zanshin | Moved setting of maxAmps and shunt to constants
7879/* *************************************************************************************************
7980** Declare program constants, global variables and instantiate INA class **
8081**************************************************************************************************/
81- const uint32_t SERIAL_SPEED = 115200 ; // /< Use fast serial speed
82- const uint32_t SHUNT_MICRO_OHM = 100000 ; // /< Shunt resistance in Micro-Ohm, e.g. 100000 is 0.1 Ohm
83- const uint16_t MAXIMUM_AMPS = 1 ; // /< Max expected amps, values are 1 - clamped to max 1022
84- uint8_t devicesFound = 0 ; // /< Number of INAs found
85- INA_Class INA; // /< INA class instantiation
82+ const uint32_t SERIAL_SPEED{115200 }; // /< Use fast serial speed
83+ const uint32_t SHUNT_MICRO_OHM{100000 }; // /< Shunt resistance in Micro-Ohm, e.g. 100000 is 0.1 Ohm
84+ const uint16_t MAXIMUM_AMPS{1 }; // /< Max expected amps, clamped from 1A to a max of 1022A
85+ uint8_t devicesFound{0 }; // /< Number of INAs found
86+ INA_Class INA; // /< INA class instantiation to use EEPROM
87+ // INA_Class INA(0); ///< INA class instantiation to use EEPROM
88+ // INA_Class INA(5); ///< INA class instantiation to use dynamic memory rather
89+ // than EEPROM. Allocate storage for up to (n) devices
8690
8791void setup () {
8892 /* !
@@ -98,22 +102,22 @@ void setup() {
98102#ifdef __AVR_ATmega32U4__ // If a 32U4 processor, then wait 2 seconds to initialize
99103 delay (2000 );
100104#endif
101- Serial.print (" \n\n Display INA Readings V1.0.7 \n "
105+ Serial.print (" \n\n Display INA Readings V1.0.8 \n "
102106 Serial.print (" - Searching & Initializing INA devices\n "
103107 /* ***********************************************************************************************
104108 ** The INA.begin call initializes the device(s) found with an expected ±1 Amps maximum current **
105109 ** and for a 0.1Ohm resistor, and since no specific device is given as the 3rd parameter all **
106110 ** devices are initially set to these values. **
107111 ************************************************************************************************/
108- devicesFound = INA.begin (
109- MAXIMUM_AMPS, SHUNT_MICRO_OHM); // Set to the expected Amp maximum and shunt resistance
110- while (INA. begin (MAXIMUM_AMPS, SHUNT_MICRO_OHM) == 0 ) {
111- Serial. println ( " No INA device found, retrying in 10 seconds... " );
112- delay ( 10000 ); // Wait 10 seconds before retrying
113- } // while no devices detected
114- Serial.print (" - Detected "
112+ devicesFound = INA.begin (MAXIMUM_AMPS, SHUNT_MICRO_OHM); // Expected max Amp & shunt resistance
113+ while (devicesFound == 0 ) {
114+ Serial. println ( F ( " No INA device found, retrying in 10 seconds... " ));
115+ delay ( 10000 ); // Wait 10 seconds before retrying
116+ devicesFound = INA. begin (MAXIMUM_AMPS, SHUNT_MICRO_OHM ); // Expected max Amp & shunt resistance
117+ } // while no devices detected
118+ Serial.print (F ( " - Detected " ) );
115119 Serial.print (devicesFound);
116- Serial.println (" INA devices on the I2C bus"
120+ Serial.println (F ( " INA devices on the I2C bus" ) );
117121 INA.setBusConversion (8500 ); // Maximum conversion time 8.244ms
118122 INA.setShuntConversion (8500 ); // Maximum conversion time 8.244ms
119123 INA.setAveraging (128 ); // Average each reading n-times
@@ -134,8 +138,8 @@ void loop() {
134138 static char sprintfBuffer[100 ]; // Buffer to format output
135139 static char busChar[8 ], shuntChar[10 ], busMAChar[10 ], busMWChar[10 ]; // Output buffers
136140
137- Serial.print (" Nr Adr Type Bus Shunt Bus Bus\n "
138- Serial.print (" == === ====== ======== =========== =========== ===========\n "
141+ Serial.print (F ( " Nr Adr Type Bus Shunt Bus Bus\n " ) );
142+ Serial.print (F ( " == === ====== ======== =========== =========== ===========\n " ) );
139143 for (uint8_t i = 0 ; i < devicesFound; i++) // Loop through all devices
140144 {
141145 dtostrf (INA.getBusMilliVolts (i) / 1000.0 , 7 , 4 , busChar); // Convert floating point to char
@@ -148,7 +152,7 @@ void loop() {
148152 } // for-next each INA device loop
149153 Serial.println ();
150154 delay (10000 ); // Wait 10 seconds before next reading
151- Serial.print (" Loop iteration "
155+ Serial.print (F ( " Loop iteration " ) );
152156 Serial.print (++loopCounter);
153- Serial.print (" \n\n "
157+ Serial.print (F ( " \n\n " ) );
154158} // method loop()
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