122 lines
3.1 KiB
C++
122 lines
3.1 KiB
C++
#include <Wire.h>
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#define SLAVE_ADDRESS 0x08
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void setup() {
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Serial.begin(115200);
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Wire.begin();
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delay(1000);
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Serial.println("Testing I2C LED Strip Slave...");
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// 1. Set device name (optional, not in slave code above, but included for completeness)
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// setDeviceName("LivingRoomLEDs");
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// 2. Set number of LEDs to 10 (for testing)
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setLedCount(10);
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delay(200);
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// 3. Set brightness to 128 (half)
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setBrightness(128);
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delay(200);
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// 4. Set all pixels to red
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setAllPixels(255, 0, 0);
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delay(1000);
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// 5. Set pixel 0 to green
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setPixel(0, 0, 255, 0);
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delay(500);
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// 6. Set pixel 1 to blue
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setPixel(1, 0, 0, 255);
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delay(500);
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// 7. Set all pixels to white
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setAllPixels(255, 255, 255);
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delay(1000);
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// 8. Clear all pixels (turn off)
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clearAll();
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delay(500);
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// 9. Request status from slave and print it
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requestStatus();
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Serial.println("Test complete.");
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}
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void loop() {
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// Nothing here
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}
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// --------- Helper Functions ---------
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void setPixel(uint8_t pixel, uint8_t r, uint8_t g, uint8_t b) {
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Wire.beginTransmission(SLAVE_ADDRESS);
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Wire.write(0xA0); // Command: Set individual pixel
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Wire.write(pixel);
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Wire.write(r);
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Wire.write(g);
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Wire.write(b);
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Wire.endTransmission();
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Serial.print("Set pixel "); Serial.print(pixel);
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Serial.print(" to RGB("); Serial.print(r); Serial.print(","); Serial.print(g); Serial.print(","); Serial.print(b); Serial.println(")");
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}
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void setAllPixels(uint8_t r, uint8_t g, uint8_t b) {
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Wire.beginTransmission(SLAVE_ADDRESS);
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Wire.write(0xA1); // Command: Set all pixels
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Wire.write(r);
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Wire.write(g);
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Wire.write(b);
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Wire.endTransmission();
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Serial.print("Set all pixels to RGB("); Serial.print(r); Serial.print(","); Serial.print(g); Serial.print(","); Serial.print(b); Serial.println(")");
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}
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void setBrightness(uint8_t brightness) {
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Wire.beginTransmission(SLAVE_ADDRESS);
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Wire.write(0xA2); // Command: Set brightness
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Wire.write(brightness);
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Wire.endTransmission();
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Serial.print("Set brightness to "); Serial.println(brightness);
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}
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void clearAll() {
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Wire.beginTransmission(SLAVE_ADDRESS);
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Wire.write(0xB0); // Command: Clear all
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Wire.endTransmission();
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Serial.println("Cleared all pixels (off)");
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}
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void setLedCount(uint16_t count) {
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Wire.beginTransmission(SLAVE_ADDRESS);
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Wire.write(0xD0); // Command: Set LED count
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Wire.write((count >> 8) & 0xFF); // High byte
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Wire.write(count & 0xFF); // Low byte
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Wire.endTransmission();
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Serial.print("Set LED count to "); Serial.println(count);
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}
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// Optional: Set device name (if supported in slave code)
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void setDeviceName(const char* name) {
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Wire.beginTransmission(SLAVE_ADDRESS);
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Wire.write(0xD0); // Command: Set device name
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for (uint8_t i = 0; i < strlen(name); i++) {
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Wire.write(name[i]);
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}
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Wire.endTransmission();
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Serial.print("Set device name to "); Serial.println(name);
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}
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void requestStatus() {
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Wire.requestFrom(SLAVE_ADDRESS, 40); // Request up to 40 bytes (enough for status string)
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String status = "";
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while (Wire.available()) {
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char c = Wire.read();
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status += c;
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}
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Serial.print("Status from slave: ");
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Serial.println(status);
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}
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