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Use one array to manage step sequence

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rsformoso
2026-07-07 12:46:31 +08:00
parent a93e3a8878
commit 279a5cf539
1 changed files with 24 additions and 27 deletions
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rotating-display-controller/rotating-display-controller.ino
+24 -27
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@@ -1,4 +1,5 @@
// --- Hardware Configuration --- // --- Hardware Configuration ---
// Pins connected to the ULN2003 driver (or similar stepper driver)
#define IN1 9 #define IN1 9
#define IN2 10 #define IN2 10
#define IN3 11 #define IN3 11
@@ -6,21 +7,13 @@
// Step sequences for 28BYJ-48 // Step sequences for 28BYJ-48
// Clockwise sequence // Clockwise sequence
int stepSequenceCW[4][4] = { int stepSequence[4][4] = {
{ 1, 0, 0, 0 }, { 1, 0, 0, 0 },
{ 0, 1, 0, 0 }, { 0, 1, 0, 0 },
{ 0, 0, 1, 0 }, { 0, 0, 1, 0 },
{ 0, 0, 0, 1 } { 0, 0, 0, 1 }
}; };
// Counter-Clockwise sequence (reverse of CW)
int stepSequenceCCW[4][4] = {
{ 0, 0, 0, 1 },
{ 0, 0, 1, 0 },
{ 0, 1, 0, 0 },
{ 1, 0, 0, 0 }
};
// --- Configuration Constants --- // --- Configuration Constants ---
const int STEPS_PER_REVOLUTION = 2048; // 28BYJ-48 standard (512 steps * 4 gear reduction) const int STEPS_PER_REVOLUTION = 2048; // 28BYJ-48 standard (512 steps * 4 gear reduction)
const float DEGREES_PER_STEP = 360.0 / STEPS_PER_REVOLUTION; const float DEGREES_PER_STEP = 360.0 / STEPS_PER_REVOLUTION;
@@ -66,15 +59,15 @@ void updateStepInterval() {
} }
void calculateStepsForAngle(float angle) { void calculateStepsForAngle(float angle) {
// Determine direction // Determine direction based on angle sign
if (angle >= 0) { if (angle >= 0) {
_directionCW = true; _directionCW = true; // Clockwise
} else { } else {
_directionCW = false; _directionCW = false; // Counter-Clockwise
angle = -angle; // Work with absolute value angle = -angle; // Work with absolute value for calculation
} }
// Calculate steps // Calculate total steps needed
_stepCount = (int)(angle / DEGREES_PER_STEP); _stepCount = (int)(angle / DEGREES_PER_STEP);
// Update speed interval immediately // Update speed interval immediately
@@ -84,26 +77,30 @@ void calculateStepsForAngle(float angle) {
_currState = MOVE; _currState = MOVE;
_stepsRemaining = _stepCount; _stepsRemaining = _stepCount;
_stepTime = millis(); _stepTime = millis();
_currentStepIndex = 0; _currentStepIndex = 0; // Start from the beginning of the sequence
// Reset wait timer just in case // Reset wait timer just in case
_waitTime = 0; _waitTime = 0;
} }
void runStep() { void runStep() {
int* sequence = _directionCW ? stepSequenceCW[0] : stepSequenceCCW[0]; // Placeholder logic // Get the current step pattern from the single array
const int* step = stepSequence[_currentStepIndex];
// Actually, we need to access the 2D array correctly
int (*seq)[4] = _directionCW ? stepSequenceCW : stepSequenceCCW;
setStep(seq[_currentStepIndex][0], // Set the output pins
seq[_currentStepIndex][1], setStep(step[0], step[1], step[2], step[3]);
seq[_currentStepIndex][2],
seq[_currentStepIndex][3]); // Update index based on direction
if (_directionCW) {
_currentStepIndex++; _currentStepIndex++;
if (_currentStepIndex >= 4) { if (_currentStepIndex >= 4) {
_currentStepIndex = 0; _currentStepIndex = 0; // Wrap around to start
}
} else {
_currentStepIndex--;
if (_currentStepIndex < 0) {
_currentStepIndex = 3; // Wrap around to end for CCW
}
} }
} }