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Update Machine Control Modbus RTU Example to reflect API change #2779

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Update Machine Control Modbus RTU Example to reflect API change #2779

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Fix https://github.com/arduino-libraries/Arduino_PortentaMachineContr…
rickypid Dec 13, 2025
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rickypid Dec 13, 2025
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12 changes: 6 additions & 6 deletions ...ns/solutions-and-kits/portenta-machine-control/tutorials/user-manual/content.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1133,7 +1133,7 @@ void setup() {

// Initialize the RS-485 interface with a baud rate of 115200 and specific timings,
// the timings define the preamble and postamble durations for RS-485 communication
MachineControl_RS485Comm.begin(115200, 0, 500);
MachineControl_RS485Comm.begin(115200, SERIAL_8N1, 0, 500);

// Set the RS-485 interface in receive mode initially
MachineControl_RS485Comm.receive();
Expand Down Expand Up @@ -1170,7 +1170,7 @@ In this example sketch, a message is periodically sent over the RS-485 interface

The example sketch uses the following functions from the `Arduino_PortentaMachineControl` library for RS-485 communication. Here is an explanation of the functions:

- `MachineControl_RS485Comm.begin(baud, pre, post)`: Initializes the RS-485 module with specified baud rate and timing settings.
- `MachineControl_RS485Comm.begin(baud, config, pre, post)`: Initializes the RS-485 module with specified baud rate, serial_config and timing settings.
- `MachineControl_RS485Comm.receive()`: Puts the module in receive mode.
- `MachineControl_RS485Comm.noReceive()`: Disables receive mode for transmission.
- `MachineControl_RS485Comm.beginTransmission()`: Prepares the module to start transmitting data.
Expand Down Expand Up @@ -1216,7 +1216,7 @@ void setup() {

// Initialize the RS-485 interface with specific settings,
// specify baud rate, preamble and postamble times for RS-485 communication
MachineControl_RS485Comm.begin(115200, 0, 500);
MachineControl_RS485Comm.begin(115200, SERIAL_8N1, 0, 500);

// Enable full duplex mode and 120 Ohm termination resistors
MachineControl_RS485Comm.setFullDuplex(true);
Expand Down Expand Up @@ -1311,7 +1311,7 @@ void setup() {
// Wait for serial port to connect (necessary for boards with native USB)
//while (!Serial);
// Initialize RS-485 communication with specified baud rate and delays
MachineControl_RS485Comm.begin(baudrate, preDelay, postDelay);
MachineControl_RS485Comm.begin(baudrate, SERIAL_8N1, preDelay, postDelay);

MachineControl_RS485Comm.setFullDuplex(true);

Expand Down Expand Up @@ -1398,7 +1398,7 @@ void setup() {
Serial.println("- Modbus RTU Server");

// Set RS485 transmission delays as per Modbus specification
MachineControl_RS485Comm.begin(baudrate, preDelay, postDelay);
MachineControl_RS485Comm.begin(baudrate, SERIAL_8N1, preDelay, postDelay);

// Enable full duplex mode and 120 Ohm termination resistors
MachineControl_RS485Comm.setFullDuplex(true);
Expand Down Expand Up @@ -1637,7 +1637,7 @@ void setup() {
Serial.begin(9600);

// Initialize RS-485 communication with specified baud rate and delays
MachineControl_RS485Comm.begin(baudrate, preDelay, postDelay);
MachineControl_RS485Comm.begin(baudrate, SERIAL_8N1, preDelay, postDelay);

// Short delay to ensure RS-485 communication is stable
delay(2500);
Expand Down