31 lines
587 B
C++
31 lines
587 B
C++
#include <SPI.h>
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#define CS_PIN 10 // Chip Select pin (must match the slave setup)
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uint8_t dataToSend[256];
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void setup() {
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Serial.begin(115200);
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Serial.println("SPI Master Starting...");
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pinMode(CS_PIN, OUTPUT);
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digitalWrite(CS_PIN, HIGH);
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SPI.begin();
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}
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void loop() {
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for (int i = 0; i < 256; i++) {
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dataToSend[i] = i;
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}
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Serial.println("Sending data...");
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digitalWrite(CS_PIN, LOW);
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SPI.transfer(dataToSend, 256); // Send the whole array at once
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digitalWrite(CS_PIN, HIGH);
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Serial.println("Data sent.");
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delay(1); // Wait before sending again
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}
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