53 lines
2.3 KiB
C++
53 lines
2.3 KiB
C++
/*Use this script to reprogram the bluesmirf-rn42 using an arduino microcontroller.
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Bluesmirf defaults the uart speed to 115200 after factory reset, so a SoftwareSerial may not be ideal for a long use, but it can be used to enter command mode and temp-change the uart speed to 9600 using the SU,9600 command
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First of all it may be useful to reset the BT module to its factory settings, a useful video on how to do it can be found here: https://www.youtube.com/watch?v=8gZNF3bFpzI
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Upload a Blink program to the arduino, when the pin is high give power to the module, an instant short-flashing on the status led followed by a couple of seconds of the led being off means that the module has been reset
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Now you can connect with this script and setup the BT module:
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Enter command mode sending $$ no line ending in serial
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Give the following commands to setup the bluesmirf as intended for our use
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Read the manual for further information about the commands used
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SM,2 Trigger mode
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SA,0 No authentication needed
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SU,19200 Baud rate to 19200
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SR, address The address the module has to connect to
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ST, number Amount of time (in seconds) of inactivity after which the connection is terminated (1 is too low, 3 is used during the tests, 2 should to the thing)
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When trying to connect one bluetooth module with another one, please make sure that the two are powered off with at least 300mS of difference: if they are trying to connect with each other at the same moment, the connection will fail
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*/
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#include <SoftwareSerial.h>
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int bluetoothTx = 2; // TX-O pin of bluetooth mate, Arduino D2
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int bluetoothRx = 3; // RX-I pin of bluetooth mate, Arduino D3
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//SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
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#define bluetooth Serial3
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void setup() {
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Serial.begin(9600); // Begin the serial monitor at 9600bps
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delay(1000);
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bluetooth.begin(19200);
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}
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void read() {
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while (bluetooth.available()) {
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// Send any characters the bluetooth pri$$$nts to the serial monitor
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Serial.print((char)bluetooth.read());
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}
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}
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void write() {
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while (Serial.available()) {
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// Send any characters the Serial monitor prints to the bluetooth
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char a = (char)Serial.read();
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bluetooth.print(a);
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Serial.print(a);
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}
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// and loop forever and ever!
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}
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void loop() {
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read();
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write();
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}
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