commit c915956121ccc602a2735c7caa2ea3315eb3931d
Author: Adema <h.adema@rug.nl>
Date:   Fri May 16 10:21:50 2025 +0200

    Upload files to "spi_receive"

diff --git a/spi_receive/spi_receive.ino b/spi_receive/spi_receive.ino
new file mode 100644
index 0000000..ec31e2a
--- /dev/null
+++ b/spi_receive/spi_receive.ino
@@ -0,0 +1,46 @@
+#include <SPI.h>
+
+uint8_t spiRx[256]; // Array to store received data
+volatile int spiRxIdx = 0;  // Index to track how many items are in spiRx
+volatile int spiRxComplete = 0;  // Flag to indicate when data is ready for printing
+
+char buffer[2048]; // Character buffer to store formatted data
+int indexbuf = 0; // Track current position in buffer
+
+
+#include "SPI2Slave_T4.h"
+
+
+SPI2Slave_T4<&SPI2, SPI_8_BITS> mySPI;
+
+//IntervalTimer SPI_transfer;
+
+void setup() {
+  Serial.begin(921600);
+  SPI.end();
+  SPI1.end();
+
+  SPI2.begin();
+  mySPI.begin();
+  //SPI_transfer.begin(ReceiveData, 10);  // run every 10 microseconds
+
+}
+
+void loop() {
+  if (spiRxComplete) {
+    indexbuf = 0;
+    for (int i = 0; i < spiRxIdx; i++) {
+       indexbuf += snprintf(buffer + indexbuf, sizeof(buffer) - indexbuf, "%02X ", (unsigned int)spiRx[i]);
+    }    
+    // Print the formatted buffer at once
+    Serial.println(buffer);
+    
+    // Reset for the next round of data
+    spiRxComplete = 0;
+    spiRxIdx = 0;
+  }
+  delayMicroseconds(1);
+}
+
+void ReceiveData() {
+}