Uploaded test suites for minion modbus configuration

Author: MikeHLee

minions/ESPTestSuite/esp-test-minion/esp-test-minion.ino

@@ -0,0 +1,41 @@
+#include <SoftwareSerial.h>
+#include "ModbusRTUSlave.h"
+
+#define RX_PIN 4
+#define TX_PIN 0
+#define DE_PIN 5
+#define SLAVE_ID 1
+#define BUFFER_SIZE 256
+
+SoftwareSerial swSerial(RX_PIN, TX_PIN);
+uint8_t buf[BUFFER_SIZE]; 
+ModbusRTUSlave slave(swSerial, buf, sizeof(buf), DE_PIN);
+
+uint16_t holdingRegister[1];
+
+// Callbacks
+int holdingRegisterRead(uint16_t index) {
+  return holdingRegister[index];
+}
+
+bool holdingRegisterWrite(uint16_t index, uint16_t value) {
+  holdingRegister[index] = value;
+  return true;
+}
+
+void setup() {
+  Serial.begin(9600);
+
+  // Configure the Modbus Slave
+  slave.configureHoldingRegisters(1, holdingRegisterRead, holdingRegisterWrite);
+  slave.begin(SLAVE_ID, 9600, SERIAL_8N1); // 9600 baud rate, 8 data bits, No parity, 1 stop bit
+}
+
+void loop() {
+  slave.poll();
+
+  if(holdingRegister[0] != 0) {
+    Serial.print("Value in Holding Register: ");
+    Serial.println(holdingRegister[0]);
+  }
+}

minions/ESPTestSuite/esp8266-test-minion/esp8266-test-minion.ino

@@ -0,0 +1,41 @@
+#include <SoftwareSerial.h>
+#include "ModbusRTUSlave.h"
+
+#define RX_PIN 8
+#define TX_PIN 2
+#define DE_PIN 1
+#define SLAVE_ID 1
+#define BUFFER_SIZE 256
+
+SoftwareSerial swSerial(RX_PIN, TX_PIN);
+uint8_t buf[BUFFER_SIZE]; 
+ModbusRTUSlave slave(swSerial, buf, sizeof(buf), DE_PIN);
+
+uint16_t holdingRegister[1];
+
+// Callbacks
+int holdingRegisterRead(uint16_t index) {
+  return holdingRegister[index];
+}
+
+bool holdingRegisterWrite(uint16_t index, uint16_t value) {
+  holdingRegister[index] = value;
+  return true;
+}
+
+void setup() {
+  Serial.begin(9600);
+
+  // Configure the Modbus Slave
+  slave.configureHoldingRegisters(1, holdingRegisterRead, holdingRegisterWrite);
+  slave.begin(SLAVE_ID, 9600, SERIAL_8N1); // 9600 baud rate, 8 data bits, No parity, 1 stop bit
+}
+
+void loop() {
+  slave.poll();
+
+  if(holdingRegister[0] != 0) {
+    Serial.print("Value in Holding Register: ");
+    Serial.println(holdingRegister[0]);
+  }
+}

minions/NanoTestSuite/nano-test-master/nano-test-master.ino

@@ -1,6 +1,6 @@
 #include <Wire.h>
 #include <Adafruit_BMP3XX.h>
-//#include <ArduinoModbus.h>
+#include <ArduinoModbus.h>
 
 #define BMP_SDA A4 // BMP390 sensor SDA pin
 #define BMP_SCL A5 // BMP390 sensor SCL pin
@@ -19,9 +19,9 @@ void setup() {
 
   pinMode(PIR_PIN, INPUT);
 
-  //if (!ModbusRTUClient.begin(9600)) {
-  //Serial.println("Failed to start Modbus RTU Client!");
-  //}
+  if (!ModbusRTUClient.begin(9600)) {
+  Serial.println("Failed to start Modbus RTU Client!");
+  }
 }
 
 void loop() {
@@ -49,12 +49,12 @@ void loop() {
   Serial.print("Soil Moisture = ");
   Serial.println(moistureValue);
 
-  // Modbus communication
-  //uint8_t serverId = 1;
-  //uint16_t address = 0;
-  //uint16_t value = 1234; // example data
+  //Modbus communication
+  uint8_t serverId = 1;
+  uint16_t address = 0;
+  uint16_t value = 1234; // example data
 
-  //ModbusRTUClient.holdingRegisterWrite(serverId, address, value);
+  ModbusRTUClient.holdingRegisterWrite(serverId, address, value);
 
   delay(1000);
 }

minions/NanoTestSuite/nano33ble-test-master/nano33ble-test-master.ino

@@ -0,0 +1,35 @@
+#include <ArduinoModbus.h>
+
+#define DE_PIN 7  // Driver Enable pin for RS485
+
+void setup() {
+  Serial.begin(9600);
+  pinMode(DE_PIN, OUTPUT);  // Configure DE pin as output
+  
+  if (!ModbusRTUClient.begin(9600)) {
+    Serial.println("Failed to start Modbus RTU Client!");
+  }
+}
+
+void loop() {
+  //Modbus communication
+  uint8_t serverId = 1;
+  uint16_t address = 0;
+  uint16_t value = 1234; // example data
+  
+  digitalWrite(DE_PIN, HIGH);  // Set RS485 to send mode
+  if (ModbusRTUClient.holdingRegisterWrite(serverId, address, value) < 0) {
+    Serial.println("Modbus Write Failed");
+  }
+
+  digitalWrite(DE_PIN, LOW);  // Set RS485 to receive mode
+  long readValue = ModbusRTUClient.holdingRegisterRead(serverId, address);
+  if (readValue < 0) {
+    Serial.println("Modbus Read Failed");
+  } else {
+    Serial.print("Read Value: ");
+    Serial.println(readValue);
+  }
+
+  delay(1000);
+}

setup_scripts/i2c_rtc.sh

@@ -4,4 +4,4 @@
 echo rtc-pcf85363 | sudo tee -a /etc/modules
 
 #bind rtc to i2c bus
-echo rtc-pcf85363 0xA2 | sudo tee /sys/class/i2c-adapter/i2c-2/new_device
+echo rtc-pcf85363 0x51 | sudo tee /sys/class/i2c-adapter/i2c-1/new_device

utils/PCF85363A_i2c.py

@@ -0,0 +1,32 @@
+import sys
+import smbus2
+
+# Create a new SMBus instance on line 2
+bus = smbus2.SMBus(1)  
+
+def set_rtcm():
+    # Device i2c write address
+    device_address = 0x51
+
+    # Register address
+    register_address = 0x28
+
+    # First, we need to read the current value of the register
+    current_value = bus.read_byte_data(device_address, register_address)
+
+    # Then, we need to clear the fourth bit (fifth from the left, little endian starting at 0)
+    # We can do this by creating a mask where all bits are 1, except for the fourth bit, which is 0. 
+    # Then, we use the bitwise AND operation to clear the fourth bit.
+    mask = 0b11101111
+    new_value = current_value & mask
+
+    # Write the new value back to the register
+    bus.write_byte_data(device_address, register_address, new_value)
+
+if __name__ == "__main__":
+
+    if sys.argv[1] == "set_rtcm":
+        print("Setting RTCM on the RTC")
+        set_rtcm()
+    
+