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This commit is contained in:
Michael Clemens // DK1MI 2023-05-19 20:43:59 +00:00
parent 3e6e9a5097
commit fa50695f13
1 changed files with 127 additions and 101 deletions
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wt32pamon.ino
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@ -27,8 +27,8 @@
Preferences config;
String config_items [ ] = {"show_mV", "show_dBm", "show_watt", "vswr_threshold", "vswr_beep", "selected_band", "antenna_name", "max_led_pwr_fwd", "max_led_pwr_ref", "max_led_vswr"};
String config_defaults [ ] = {"true", "true", "true", "2", "true", "70cm", " ", "100", "100", "3"};
String config_items [ ] = {"show_mV", "show_dBm", "show_watt", "vswr_threshold", "vswr_beep", "selected_band", "antenna_name", "max_led_pwr_fwd", "max_led_pwr_ref", "max_led_vswr", "show_led_fwd", "show_led_ref", "show_led_vswr"};
String config_defaults [ ] = {"true", "true", "true", "2", "true", "70cm", " ", "100", "100", "3", "true", "true", "true"};
double fwd_array [3300] = {};
double ref_array [3300] = {};
@ -102,6 +102,48 @@ double dbm_to_watt(double dbm) {
return pow( 10.0, (dbm - 30.0) / 10.0);
}
// checks if a given voltage is lower as the smallest value
// in the table or higher than the biggest value
bool is_val_out_of_bounds(int mv, bool fwd){
double stored_val = 0;
int key_a = 0;
int key_b = 0;
for (int i=0; i<3300; i++) {
if (fwd) {
stored_val = fwd_array[i];
} else {
stored_val = ref_array[i];
}
if (stored_val != 0) {
key_a = i;
break;
}
}
for (int i=3299; i>0; i--) {
if (fwd) {
stored_val = fwd_array[i];
} else {
stored_val = ref_array[i];
}
if (stored_val != 0) {
key_b = i;
break;
}
}
int lowerkey = min(key_a, key_b);
int higherkey = max(key_a, key_b);
//Serial.println("lowerkey: " + String(lowerkey) + "higherkey: " + String(higherkey));
if (lowerkey <= mv and mv <= higherkey)
return false;
else {
return true;
}
}
// takes a voltage value and translates it
// to dBm based on the corresponding lookup table
double millivolt_to_dbm(int mv, bool fwd)
@ -111,61 +153,99 @@ double millivolt_to_dbm(int mv, bool fwd)
int lastkey = 0;
int nextkey = 0;
double stored_val = 0;
bool ascending = true;
int lowest_val_in_table = 0;
int highest_val_in_table = 0;
int lowest_key_in_table = 0;
int highest_key_in_table = 0;
// check if table is ascending or descending
double asc_tmp_val = 0;
for (int i=0; i<3300; i++) {
if (fwd) {
//stored_val = translation_fwd.getFloat(String(i).c_str());
stored_val = fwd_array[i];
/*
if (stored_val != 0){
Serial.println("key: " + String(i) + " - " + String(stored_val));
}
*/
} else {
//stored_val = translation_ref.getFloat(String(i).c_str());
stored_val = ref_array[i];
}
if (stored_val != 0) {
if (lowest_val_in_table == 0){
lowest_val_in_table = i; //finds the lowest voltage value stored in the table
}
highest_val_in_table = i; // we will have the highest voltage value in the table at the end of the loop
if (i < mv) {
lastval = stored_val;
lastkey = i;
} else {
nextval = stored_val;
nextkey = i;
if (asc_tmp_val == 0) {
asc_tmp_val = stored_val;
} else if (stored_val > asc_tmp_val) {
ascending = true;
break;
} else if (stored_val < asc_tmp_val) {
ascending = false;
break;
}
}
}
}
/*
if (fwd) {
fwd_highest_power = fwd_array[highest_val_in_table];
if (ascending) {
for (int i=0; i<3300; i++) {
if (fwd) {
stored_val = fwd_array[i];
} else {
stored_val = ref_array[i];
}
if (stored_val != 0) {
if (lowest_key_in_table == 0){
lowest_key_in_table = i; //finds the lowest voltage value stored in the table
}
highest_key_in_table = i; // we will have the highest voltage value in the table at the end of the loop
if (i < mv) {
lastval = stored_val;
lastkey = i;
} else {
nextval = stored_val;
nextkey = i;
break;
}
}
}
} else {
ref_highest_power = ref_array[highest_val_in_table];
}*/
//Serial.println("lastkey: "+String(lastkey));
//Serial.println("lastval: "+String(lastval));
for (int i=3300; i>0; i--) {
if (fwd) {
stored_val = fwd_array[i];
} else {
stored_val = ref_array[i];
}
if (stored_val != 0) {
if (lowest_key_in_table == 0){
lowest_key_in_table = i; //finds the lowest voltage value stored in the table
}
highest_key_in_table = i; // we will have the highest voltage value in the table at the end of the loop
if (i > mv) {
lastval = stored_val;
lastkey = i;
} else {
nextval = stored_val;
nextkey = i;
break;
}
}
}
}
double lowerkey = min(lastkey, nextkey);
double higherkey = max(lastkey, nextkey);
double lowerval = min(lastval, nextval);
double higherval = max(lastval, nextval);
double diffkey = max(lastkey, nextkey) - min(lastkey, nextkey);
double diffval = max(lastval, nextval) - min(lastval, nextval);
double result = lowerval + ((diffval / diffkey) * (mv - lowerkey));
/*
if (mv < lowest_val_in_table ){
result =
} else if (mv > highest_val_in_table){
result = -9999;
double result = 0;
if (ascending) {
result = lowerval + ((diffval / diffkey) * (mv - lowerkey));
} else {
result = higherval - ((diffval / diffkey) * (mv - lowerkey));
}
*/
//Serial.print("measured voltage: " + String(mv) + " LastVal: " + String(lastval) + " LastKey: " + String(lastkey) + " Nextval: " + String(nextval) + " NextKey:" + String(nextkey) + "\n");
return result;
}
@ -191,20 +271,6 @@ void read_directional_couplers()
fwd_watt = dbm_to_watt(fwd_dbm);
ref_watt = dbm_to_watt(ref_dbm);
/*
if (fwd_dbm != -9999){
fwd_watt = dbm_to_watt(fwd_dbm);
} else {
fwd_watt = -9999;
}
if (fwd_dbm != -9999){
ref_watt = dbm_to_watt(ref_dbm);
} else {
ref_watt = -9999;
}
*/
}
// delivers the dashboard page in "index.h"
@ -235,41 +301,21 @@ void handleNotFound()
server.send(404, F("text/plain"), message);
}
/**
String watt_or_williwatt(double val){
String ret = "0";
if (val < 0.001){
ret = String(val*1000000,0) + " uW";
} else if (val < 1) {
ret = String(val*1000,0) + " mW";
} else {
ret = String(val,3) + " W";
}
ret.replace("nan", "---");
return ret;
}
**/
// executes the function to gather sensor data
// delivers gathered data to dashboard page
// invoked periodically by the dashboard page
void handleDATA() {
read_directional_couplers();
// calculate VSWR
//double vswr = (1 + sqrt(ref_watt/fwd_watt)) / (1 - sqrt(ref_watt/fwd_watt));
double vswr = 0;
//char vswr_string[8];
//float reflexion_coefficient = 0;
if (fwd_watt>ref_watt){
vswr = (1 + sqrt(ref_watt/fwd_watt)) / (1 - sqrt(ref_watt/fwd_watt));
}
//reflexion_coefficient = sqrt(float(ref_watt) / float(fwd_watt)); // calculate SWR
//float vswr = (1+reflexion_coefficient)/(1-reflexion_coefficient);
//dtostrf(vswr,2,1, vswr_string);
String vswr_str = "-1";
String fwd_watt_str = "";
@ -297,29 +343,6 @@ void handleDATA() {
fwd_dbm_str = String(fwd_dbm,2);
ref_dbm_str = String(ref_dbm,2);
}
//fwd_dbm_str.replace("nan", "-- ");
//fwd_dbm_str.replace("-9999", "-- ");
/**
if (fwd_dbm_str.startsWith("nan") || fwd_dbm_str.startsWith("-9999")){
fwd_dbm_str = "-- ";
fwd_watt_str = "-- ";
} else {
//String fwd_watt_str = "";
if (config.getString(String("show_watt").c_str()) != "false") {
fwd_watt_str = watt_or_williwatt(fwd_watt);
}
}
if (ref_dbm_str.startsWith("nan") || ref_dbm_str.startsWith("-9999")){
ref_dbm_str = "-- ";
ref_watt_str = "-- ";
} else {
if (config.getString(String("show_watt").c_str()) != "false") {
ref_watt_str = watt_or_williwatt(ref_watt);
}
}
**/
//String fwd_watt_str = "";
if (config.getString(String("show_watt").c_str()) != "false") {
@ -340,13 +363,16 @@ void handleDATA() {
String antenna_name = config.getString(String("antenna_name").c_str());
String vswr_beep = config.getString(String("vswr_beep").c_str());
bool fwd_oob = is_val_out_of_bounds(voltage_fwd, true);
bool ref_oob = is_val_out_of_bounds(voltage_ref, false);
String output = fwd_watt_str + ";" + fwd_dbm_str + ";" + voltage_fwd_str + ";" + ref_watt_str + ";";
output += ref_dbm_str + ";" + voltage_ref_str + ";" + vswr_str + ";" + rl_str + ";" + band + ";";
output += String(vswr_threshold) + ";" + antenna_name + ";" + vswr_beep + ";";
output += config.getString(String("max_led_pwr_fwd").c_str()) + ";" + config.getString(String("max_led_pwr_ref").c_str()) + ";" + config.getString(String("max_led_vswr").c_str());
Serial.println("vswr: " + String(vswr) + " FWD Watt: " + fwd_watt_str + " REF Watt: " + ref_watt_str);
output += config.getString(String("max_led_pwr_fwd").c_str()) + ";" + config.getString(String("max_led_pwr_ref").c_str()) + ";";
output += config.getString(String("max_led_vswr").c_str()) + ";" + String(fwd_oob) + ";" + String(ref_oob) + ";";
output += config.getString(String("show_led_fwd").c_str()) + ";" + config.getString(String("show_led_ref").c_str()) + ";" + config.getString(String("show_led_vswr").c_str());
server.send(200, "text/plane", output);
//Serial.println("String(fwd_highest_power,0): " + String(fwd_highest_power,0));
}
// main function for displaying the configuration page