From 6a2e8436be9af32d767913d0c1293529c2d9c1b2 Mon Sep 17 00:00:00 2001
From: Adema <h.adema@rug.nl>
Date: Fri, 16 May 2025 10:22:11 +0200
Subject: [PATCH] Upload files to "spi_send"

---
 spi_send/spi_send.ino | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 spi_send/spi_send.ino

diff --git a/spi_send/spi_send.ino b/spi_send/spi_send.ino
new file mode 100644
index 0000000..d2cdd77
--- /dev/null
+++ b/spi_send/spi_send.ino
@@ -0,0 +1,32 @@
+#include <SPI.h>
+
+#define cs_pin 44  // Chip Select pin (must match the slave setup)
+
+uint8_t dataToSend[256];
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println("SPI Master Starting...");
+
+  pinMode(cs_pin, OUTPUT);
+  digitalWrite(cs_pin, HIGH);
+
+  SPI2.begin();
+}
+
+void loop() {
+
+  for (int i = 0; i < 256; i++) {
+    dataToSend[i] = i;
+  }
+
+  SPI2.beginTransaction(SPISettings(22000000, MSBFIRST, SPI_MODE0));
+  Serial.println("Sending data...");
+  digitalWrite(cs_pin, LOW);
+  SPI2.transfer(dataToSend, 256);  // Send the whole array at once
+  digitalWrite(cs_pin, HIGH);
+  Serial.println("Data sent.");
+  SPI2.endTransaction();
+
+  delayMicroseconds(1000); // Wait before sending again
+}