Disabled external gits

cs473-es/lab3/sw/nios/application/lcdcam_system_test.c

@@ -0,0 +1,99 @@
+#ifdef ENABLE_LCDCAM_TEST
+
+#include "lt24.h"
+#include "stdint.h"
+#include "stddef.h"
+
+#include "system.h"
+
+#define WIDTH   320
+#define HEIGHT  240
+#define NPIXELS WIDTH*HEIGHT
+#define PIXELSIZE 2 // 16 bits
+#define BUFFER_SIZE NPIXELS / PIXELSIZE // in words
+#define BUFFER1 0x10000000
+#define BUFFER2 BUFFER1 + BUFFER_SIZE
+#define BUFFER3 BUFFER2 + BUFFER_SIZE
+#define N_BUFFERS 3
+
+struct BufferManager {
+    uint32_t* buffers[N_BUFFERS];
+
+    // Buffer assignment semantics:
+    //    if null
+    //        => device currently has no assigne buffer
+    //        => device is currently now showing/capturing
+    uint32_t* lcd_buffer;
+    uint32_t* cam_buffer;
+};
+
+struct BufferManager bman;
+struct LT24 *lcd = LCDCONTROLLER_0_BASE;
+// struct Camera cam = CAMERA_ADDRESS;
+
+void setupBuffers(struct BufferManager* bman, uint32_t* b1, uint32_t* b2, uint32_t* b3) {
+    bman->buffers[0] = b1;
+    bman->buffers[1] = b2;
+    bman->buffers[2] = b3;
+    bman->lcd_buffer = 0;
+    bman->cam_buffer = 0;
+}
+
+int main_changeme() {
+    setupBuffers(&bman, BUFFER1, BUFFER2, BUFFER3);
+
+    LT24_initialize(lcd);
+    // startCamera(&cam);
+    while(1) {
+    	// TODO: put to sleep...
+    }
+}
+
+void tryLCDShow() {
+    char gotBuffer = 0;
+    for (int i = 0; i < N_BUFFERS; i++) {
+        if (bman.buffers[i] != 0 && bman.buffers[i] != bman.cam_buffer) {
+            bman.lcd_buffer = bman.buffers[i];
+            gotBuffer = 1;
+            break;
+        }
+    }
+    if (gotBuffer) {
+        LT24_refresh(lcd);
+    } else {
+        bman.lcd_buffer = 0;
+    }
+}
+
+void tryCamCapture() {
+    char gotBuffer = 0;
+    for (int i = 0; i < N_BUFFERS; i++) {
+        if (bman.buffers[i] != bman.lcd_buffer && bman.buffers[i] != bman.cam_buffer) {
+            bman.cam_buffer = bman.buffers[i];
+            gotBuffer = 1;
+            break;
+        }
+    }
+    if (gotBuffer) {
+    	// captureImage(bman.lcd_buffer);
+    } else {
+        bman.cam_buffer = 0;
+    }
+}
+
+void IRQ_lcd() {
+    bman.lcd_buffer = 0;            // Yield buffer
+    tryLCDShow();                   // Locate any ready buffer
+    if (bman.cam_buffer == 0) {     // If camera currently inactive, re-try capture (we just yielded a buffer)
+        tryCamCapture();
+    }
+}
+
+void IRQ_camera() {
+    tryCamCapture();
+    if (bman.lcd_buffer == 0) {
+        tryLCDShow();
+    }
+}
+
+#endif