External S-Meter on Icom Radios with CI-V Port

1// IC7300 Testbed for S-meter readout and other functions
2// by Luc
3  Decroos - ON7DQ/KF0CR
4// modified & adapted by Daniel VE2BAP, 2018-12-01
5
6#include
7  <SoftwareSerial.h> // for comms to IC7000
8#define BAUD_RATE 19200     // CI-V
9  speed
10#define TRX_address (0x70)  // HEX $70 = Icom IC-7000
11//#define TRX_address
12  ((byte)00)  // $00: Icom universal address (works for all radios).
13
14// serial
15  connection
16// RX = Icom radio to Arduino  : to pin 2 via resistor 4k7
17// TX
18  = Arduino to Icom radio  : to pin 7 via diode 1N4148, with pull up 10k to Vcc (5V)
19  on tip of 3.5 mm connector
20
21SoftwareSerial mySerial = SoftwareSerial(2, 7);
22  // (RX, TX)
23
24int readCounter; // counts the number of bytes received from
25  the radio
26int sMeterVal1;  // stores the most  significant BCD byte containing
27  signal info.
28int sMeterVal2;  // stores the least significant BCD byte containing
29  signal info.
30int sMeterOut = 11; // External analog S-meter connected to pin
31  11.
32
33//---------------------------------------------------------------------------------------------
34
35void
36  setup()
37{
38  pinMode(13, OUTPUT); digitalWrite(13, LOW); // force LED (pin
39  13) to turn off.
40
41  pinMode(2, INPUT);  // CI-V serial communication from
42  IC7000
43  pinMode(7, OUTPUT); // CI-V serial communication to IC7000
44  pinMode(sMeterOut,
45  OUTPUT); // set sMeterPin for output
46  
47  mySerial.begin(BAUD_RATE);
48  mySerial.listen();
49  // only one port can be made to listen with software serial
50  // see reference
51  https://www.arduino.cc/en/Reference/SoftwareSerialListen
52  while (mySerial.available())
53  mySerial.read(); // clean buffer
54}
55
56//---------------------------------------------------------------------------------------------
57
58void
59  loop()
60{
61  // read and display S-meter value
62
63  mySerial.flush();
64
65
66  // start sequence: send "read S meter" command to radio.
67  mySerial.write(0xFE);
68  mySerial.write(0xFE); mySerial.write(TRX_address); mySerial.write(0xE0);
69  mySerial.write(0x15);
70  mySerial.write(0x02); // Read s-meter , command 15 02
71  mySerial.write(0xFD);
72  // end sequence
73  delay(20);
74  
75  // now read info from radio
76  int
77  nbChar = mySerial.available();
78  
79  if (nbChar > 0) {
80    for (int readCounter
81  = 0; readCounter < nbChar ; readCounter++) {
82      byte byteRead = mySerial.read();
83
84
85      if (readCounter == 6){
86        sMeterVal1 = ( (byteRead/16*10) + (byteRead%16)
87  ); // First byte: convert from BCD to decimal.
88      }
89
90      if (readCounter
91  == 7){
92        sMeterVal2 = ( (byteRead/16*10) + (byteRead%16) ); // Second byte:
93  convert from BCD to decimal.
94
95        analogWrite(sMeterOut, ((sMeterVal1
96  * 100) + sMeterVal2)); // Calculate and write the S-meter value on the S-meter output
97  pin.
98        delay(20);
99      }
100    }
101  }
102}
103
104

1// IC7300 Testbed for S-meter readout and other functions
2// by Luc  Decroos - ON7DQ/KF0CR
3// modified & adapted by Daniel VE2BAP, 2018-12-01
4
5#include  <SoftwareSerial.h> // for comms to IC7000
6#define BAUD_RATE 19200     // CI-V  speed
7#define TRX_address (0x70)  // HEX $70 = Icom IC-7000
8//#define TRX_address  ((byte)00)  // $00: Icom universal address (works for all radios).
9
10// serial  connection
11// RX = Icom radio to Arduino  : to pin 2 via resistor 4k7
12// TX  = Arduino to Icom radio  : to pin 7 via diode 1N4148, with pull up 10k to Vcc (5V)  on tip of 3.5 mm connector
13
14SoftwareSerial mySerial = SoftwareSerial(2, 7);  // (RX, TX)
15
16int readCounter; // counts the number of bytes received from  the radio
17int sMeterVal1;  // stores the most  significant BCD byte containing  signal info.
18int sMeterVal2;  // stores the least significant BCD byte containing  signal info.
19int sMeterOut = 11; // External analog S-meter connected to pin  11.
20
21//---------------------------------------------------------------------------------------------
22
23void  setup()
24{
25  pinMode(13, OUTPUT); digitalWrite(13, LOW); // force LED (pin  13) to turn off.
26
27  pinMode(2, INPUT);  // CI-V serial communication from  IC7000
28  pinMode(7, OUTPUT); // CI-V serial communication to IC7000
29  pinMode(sMeterOut,  OUTPUT); // set sMeterPin for output
30  
31  mySerial.begin(BAUD_RATE);
32  mySerial.listen();  // only one port can be made to listen with software serial
33  // see reference  https://www.arduino.cc/en/Reference/SoftwareSerialListen
34  while (mySerial.available())  mySerial.read(); // clean buffer
35}
36
37//---------------------------------------------------------------------------------------------
38
39void  loop()
40{
41  // read and display S-meter value
42
43  mySerial.flush();
44
45  // start sequence: send "read S meter" command to radio.
46  mySerial.write(0xFE);  mySerial.write(0xFE); mySerial.write(TRX_address); mySerial.write(0xE0);
47  mySerial.write(0x15);  mySerial.write(0x02); // Read s-meter , command 15 02
48  mySerial.write(0xFD);  // end sequence
49  delay(20);
50  
51  // now read info from radio
52  int  nbChar = mySerial.available();
53  
54  if (nbChar > 0) {
55    for (int readCounter  = 0; readCounter < nbChar ; readCounter++) {
56      byte byteRead = mySerial.read();
57
58      if (readCounter == 6){
59        sMeterVal1 = ( (byteRead/16*10) + (byteRead%16)  ); // First byte: convert from BCD to decimal.
60      }
61
62      if (readCounter  == 7){
63        sMeterVal2 = ( (byteRead/16*10) + (byteRead%16) ); // Second byte:  convert from BCD to decimal.
64
65        analogWrite(sMeterOut, ((sMeterVal1  * 100) + sMeterVal2)); // Calculate and write the S-meter value on the S-meter output  pin.
66        delay(20);
67      }
68    }
69  }
70}
71
72