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Implemented frequency-ranges with filterbank.

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This commit is contained in:
jupfi 2022-02-10 13:24:44 +01:00
parent 6c8920c2c8
commit e035e9d578
4 changed files with 69 additions and 12 deletions
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4
include/Pins.h
View file

@ -25,3 +25,7 @@
//ADC Pin
#define REFLECTION_PIN 15
// Filter Bank
#define FILTER_SWITCH_A 22
#define FILTER_SWITCH_B 23

43
include/Positions.h
View file

@ -1,14 +1,43 @@
// Position @ 40, 60, 80, 100, 120, 140, 160, 180, 200, 220 MHz
struct FREQUENCY_POSITION
// Position @ 40, 60, 80, 100, 120, 140, 160, 180, 200, 220 MHzstruct Filter
struct Filter
{
uint32_t FREQUENCY;
uint32_t TUNING_POSITION;
uint32_t MATCHING_POSITION;
uint32_t fg;
int control_input_a;
int control_input_b;
};
struct FrequencyRange
{
uint32_t START_FREQUENCY;
uint32_t STOP_FREQUENCY;
uint32_t CENTER_FREQUENCY;
Filter FILTER;
uint32_t TUNING_CENTER_POSITION;
uint32_t MATCHING_CENTER_POSITION;
};
const Filter FG_71MHZ = {71000000U, HIGH, HIGH};
const Filter FG_120MHZ = {120000000U, LOW, HIGH};
const Filter FG_180MHZ = {180000000U, LOW, LOW};
const Filter FG_260MHZ = {260000000U, HIGH, LOW};
// Settings for 100MHz -18dB
#define TUNING_STEPPER_HOME 34250U
#define MATCHING_STEPPER_HOME 45000U
//#define TUNING_STEPPER_HOME 34250U
//#define MATCHING_STEPPER_HOME 45000U
const FrequencyRange RANGE_75_125MHZ =
{
75000000U,
125000000U,
100000000U,
FG_120MHZ,
34250U,
45000U,
};
const FrequencyRange HOME_RANGE = RANGE_75_125MHZ;
// Settings for 125MHz -30dB
//#define TUNING_STEPPER_HOME 37550U

2
include/Stepper.h
View file

@ -8,5 +8,5 @@ struct Stepper{
AccelStepper STEPPER;
TMC2130Stepper DRIVER;
int STALL_PIN;
int HOME_POSITION;
String TYPE;
};

32
src/ATM.ino
View file

@ -25,9 +25,11 @@ TMC2130Stepper matching_driver = TMC2130Stepper(EN_PIN_M2, DIR_PIN_M2, STEP_PIN_
AccelStepper tuning_stepper = AccelStepper(tuning_stepper.DRIVER, STEP_PIN_M1, DIR_PIN_M1);
AccelStepper matching_stepper = AccelStepper(matching_stepper.DRIVER, STEP_PIN_M2, DIR_PIN_M2);
Stepper tuner = {tuning_stepper, tuning_driver, DIAG1_PIN_M1, TUNING_STEPPER_HOME};
Stepper tuner = {tuning_stepper, tuning_driver, DIAG1_PIN_M1, "Tuner"};
Stepper matcher = {matching_stepper, matching_driver, DIAG1_PIN_M2, MATCHING_STEPPER_HOME};
Stepper matcher = {matching_stepper, matching_driver, DIAG1_PIN_M2, "Matcher"};
boolean homed = false;
void setup()
{
@ -85,6 +87,12 @@ void setup()
adf4351.setrf(25000000U);
adf4351.pwrlevel = 2; // This equals -4dBm*/
adf4351.setf(START_FREQUENCY);
pinMode(FILTER_SWITCH_A, OUTPUT);
pinMode(FILTER_SWITCH_B, OUTPUT);
digitalWrite(FILTER_SWITCH_A, LOW);
digitalWrite(FILTER_SWITCH_B, LOW);
}
// Implement Serial communication ...
@ -163,6 +171,9 @@ void loop()
Serial.println("Homing...");
homeStepper(tuner);
homeStepper(matcher);
homed = true;
changeFrequencyRange(HOME_RANGE);
Serial.println("Resonance frequency after homing:");
uint32_t resonance_frequency = findCurrentResonanceFrequency(START_FREQUENCY, STOP_FREQUENCY, FREQUENCY_STEP);
Serial.println(resonance_frequency);
@ -302,8 +313,6 @@ void homeStepper(Stepper stepper)
stepper.STEPPER.setAcceleration(12000);
stepper.STEPPER.setCurrentPosition(0);
stepper.STEPPER.moveTo(stepper.HOME_POSITION);
stepper.STEPPER.runToPosition();
}
int stallStepper(Stepper stepper)
@ -322,6 +331,21 @@ int stallStepper(Stepper stepper)
return stepper.STEPPER.currentPosition(); // returns value until limit is reached
}
// This function changes the filterbank settings for the selected target range
// and drives the tuner and matcher stepper to the center of the selected frequency range
void changeFrequencyRange(FrequencyRange target_range)
{
digitalWrite(FILTER_SWITCH_A, target_range.FILTER.control_input_a);
digitalWrite(FILTER_SWITCH_B, target_range.FILTER.control_input_b);
tuner.STEPPER.moveTo(target_range.TUNING_CENTER_POSITION);
tuner.STEPPER.runToPosition();
matcher.STEPPER.moveTo(target_range.TUNING_CENTER_POSITION);
matcher.STEPPER.runToPosition();
}
uint32_t automaticTM(uint32_t target_frequency)
{
uint32_t resonance_frequency = findCurrentResonanceFrequency(START_FREQUENCY, STOP_FREQUENCY, FREQUENCY_STEP);