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Sasa Karanovic
2021-07-10 17:40:43 -04:00
parent ce445cc534
commit 9567465883
2 changed files with 119 additions and 23 deletions
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Part2_Central_board/Firmware/CentralUnit/CentralUnit.ino
+29
View File
@@ -13,6 +13,9 @@ int WiFi_status = WL_IDLE_STATUS;
volatile uint32_t nFlowSensorCount = 0;
volatile uint32_t nFlowSensorCount_last = 0;
char dbgBuff[4024] = {0};
uint32_t dbgBuffPos = 0;
void IRAM_ATTR ISR_flowSensor() {
nFlowSensorCount++;
}
@@ -61,8 +64,21 @@ void setup()
setupWebServer();
server.begin();
flowInterruptEnabled(true);
}
void flowInterruptEnabled(bool state)
{
if(state)
{
attachInterrupt(FLOW_SENSOR_PIN, ISR_flowSensor, FALLING);
}
else
{
detachInterrupt(FLOW_SENSOR_PIN);
}
}
void loop()
@@ -259,3 +275,16 @@ void setupWebServer(void)
});
}
void LED_Blink(uint8_t nTimes, uint16_t n_delayPeriod)
{
while(nTimes--)
{
digitalWrite(LED_PIN, HIGH);
delay(n_delayPeriod);
digitalWrite(LED_PIN, LOW);
delay(n_delayPeriod);
}
}
Part2_Central_board/Firmware/CentralUnit/PlantSystem_MainLogic.ino
+88 -21
View File
@@ -42,7 +42,7 @@ uint8_t gnSolenoidsOnBusCnt = 0;
// Plant watering definitions
#define WATERING_VOLUME_MINIMUM 10
#define WATERING_VOLUME_MAXIMUM 550
#define WATERING_FLOW_EDGES_PER_ML 4
#define WATERING_FLOW_EDGES_PER_L 5880 //98
// PlantSystem_tick periods
#define PERIOD_RESCAN_BUS 24*3600*1000 // Every 24h
@@ -66,6 +66,7 @@ uint32_t nTimeout = 0;
void PlantSystem_tick(void)
{
bool bWateringError = false;
esp_task_wdt_reset();
// -- Rescan I2C bus
@@ -124,15 +125,23 @@ void PlantSystem_tick(void)
// -- Process watering request
if(bWatering_requestPending || bWatering_inProgress)
{
// Watering logic
// Pump creates high pressure inside watering system. Because of this
// at the beginning of watering process we will first, open valve, then turn on pump.
// When we are done, we will first turn off pump and then solenoid.
//
// In previous version, water pump was too weak so we turned on the pump first to keep the pressure on
// and prevent water from "backing up" (i.e letting air in from plant side).
// With peristaltic pump we can open the solenoids first and still keep air out of the system.
//
Serial.println("bWatering_requestPending | bWatering_inProgress");
// Transition to in progress
bWatering_inProgress = true;
bWatering_requestPending = false;
nFlowSensorCount = 0;
// Note: Solenoid address and volume must have been validated
Serial.println("Turning pump ON");
digitalWrite(WATER_PUMP_EN_PIN, HIGH);
delay(200);
// - Open solenoid
Serial.println("Energizing solenoid");
if (PlantSystem_SetSolenoidState(nWatering_i2cAddress, true) != true)
{
@@ -141,33 +150,83 @@ void PlantSystem_tick(void)
digitalWrite(WATER_PUMP_EN_PIN, LOW);
Serial.println("Turning pump OFF");
Serial.println("Failed to open solenoid. Aborting...");
LED_Blink(4, 250);
return;
}
// - Reset flow counter
nFlowSensorCount = 0;
nFlowSensorCount_last = 0;
flowInterruptEnabled(true);
// - Turn ON pump
Serial.println("Turning pump ON");
delay(200);
digitalWrite(WATER_PUMP_EN_PIN, HIGH);
esp_task_wdt_reset();
nTimeout = millis() + 10000;
while(nFlowSensorCount < (WATERING_FLOW_EDGES_PER_ML*nWatering_volume))
nTimeout = millis() + 10000; // 10sec time-out for watering
// Calculate water flow
uint32_t nWaterFlow_millis_timestamp = millis();
float flowRate = 0.0;
unsigned int flowMilliLitres =0;
unsigned long totalMilliLitres = 0;
while(millis() < nTimeout)
{
if(millis() > nTimeout)
if((millis() - nWaterFlow_millis_timestamp) > 1000) // Only process counters once per second
{
flowInterruptEnabled(false);
nFlowSensorCount_last = nFlowSensorCount;
nFlowSensorCount = 0;
bWateringError = true;
flowRate = ((1000.0 / (millis() - nWaterFlow_millis_timestamp)) * nFlowSensorCount_last) / WATERING_FLOW_EDGES_PER_L;
flowMilliLitres = (flowRate / 60) * 1000;
totalMilliLitres += flowMilliLitres;
if(totalMilliLitres >= nWatering_volume)
{
break;
}
nWaterFlow_millis_timestamp = millis();
esp_task_wdt_reset();
flowInterruptEnabled(true);
}
}
esp_task_wdt_reset();
Serial.println("De-Energizing solenoid");
PlantSystem_SetSolenoidState(nWatering_i2cAddress, false);
delay(200);
// - Turn OFF pump
digitalWrite(WATER_PUMP_EN_PIN, LOW);
Serial.println("Turning pump OFF");
delay(200);
// - Close solenoid
Serial.println("De-Energizing solenoid");
PlantSystem_SetSolenoidState(nWatering_i2cAddress, false);
// Store last flow data and prepare for new request
nFlowSensorCount_last = nFlowSensorCount;
nFlowSensorCount_last = 0;
nFlowSensorCount = 0;
nWatering_volume = 0;
// Reset request
bWatering_inProgress = false;
bWatering_requestPending = false;
if(bWateringError)
{
LED_Blink(3, 250);
}
else
{
LED_Blink(2, 500);
}
}
@@ -610,10 +669,8 @@ void PlantSystem_RequestPrimeSystem(void)
bool PlantSystem_PrimeSystemWithWater(void)
{
// Turn ON Pump
Serial.println("Turning pump ON");
digitalWrite(WATER_PUMP_EN_PIN, HIGH);
delay(1000);
bool bSolenoidOpen = false;
// Turn ON all solenoids
Serial.println("Energizing ALL solenoids");
@@ -623,6 +680,7 @@ bool PlantSystem_PrimeSystemWithWater(void)
{
Serial.print("Openned solenoid 0x");
Serial.println(gSolenoidsOnBus[i].i2cAddress, HEX);
bSolenoidOpen = true;
}
else
{
@@ -630,11 +688,25 @@ bool PlantSystem_PrimeSystemWithWater(void)
Serial.println(gSolenoidsOnBus[i].i2cAddress, HEX);
}
delay(500);
// Only turn on pump AFTER solenoid has oppened
if(bSolenoidOpen)
{
// Turn ON Pump
Serial.println("Turning pump ON");
digitalWrite(WATER_PUMP_EN_PIN, HIGH);
delay(1000);
}
}
// Let the water flow for a while
delay(5000);
// Turn OFF pump
delay(1000);
Serial.println("Turning pump OFF");
digitalWrite(WATER_PUMP_EN_PIN, LOW);
// Turn OFF all solenoids
Serial.println("De-energizing ALL solenoids");
for(uint8_t i=0; i<gnSolenoidsOnBusCnt; i++)
@@ -653,11 +725,6 @@ bool PlantSystem_PrimeSystemWithWater(void)
}
// Turn OFF pump
delay(1000);
Serial.println("Turning pump OFF");
digitalWrite(WATER_PUMP_EN_PIN, LOW);
nFlowSensorCount = 0;
return true;