From 0cfa96f83d6c44b318cc0da0ec98e8e3bc97f7f9 Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Fri, 21 May 2021 18:17:45 +0200
Subject: Add file_talk function

---
 src/main.c | 53 +++++++++++++++++++++++++++--------------------------
 1 file changed, 27 insertions(+), 26 deletions(-)

(limited to 'src')

diff --git a/src/main.c b/src/main.c
index 79bf788..a65b1fe 100644
--- a/src/main.c
+++ b/src/main.c
@@ -101,6 +101,29 @@ datetime_talk(Device *d, Uint8 b0, Uint8 w) {
 	(void)w;
 }
 
+void
+file_talk(Device *d, Uint8 b0, Uint8 w) {
+	Uint8 read = b0 == 0xd;
+    txt_printf("FILE TALK\n"); // DEBUG: Remove when done
+	if(w && (read || b0 == 0xf)) {
+        char *name = (char *)&d->mem[mempeek16(d->dat, 0x8)];
+        Uint16 result = 0, length = mempeek16(d->dat, 0xa);
+        Uint16 offset = mempeek16(d->dat, 0x4);
+        Uint16 addr = mempeek16(d->dat, b0 - 1);
+        int file_idx = fs_open_file(name);
+        if (file_idx >= 0) {
+            if (read) {
+                txt_printf("READING\n"); // DEBUG: Remove when done
+                result = fs_read(&d->mem[addr], length, file_idx, offset);
+            } else {
+                txt_printf("WRITING\n"); // DEBUG: Remove when done
+                result = fs_write(&d->mem[addr], length, file_idx, offset, offset > 0);
+            }
+        }
+		mempoke16(d->dat, 0x2, result);
+	}
+}
+
 void
 init_uxn(Uxn *u) {
     // Initialize PPU.
@@ -120,7 +143,7 @@ init_uxn(Uxn *u) {
     portuxn(u, 0x7, "---", nil_talk);
 	devctrl = portuxn(u, 0x8, "controller", nil_talk);
 	devmouse = portuxn(u, 0x9, "mouse", nil_talk);
-    portuxn(u, 0xa, "---", nil_talk);
+	portuxn(u, 0xa, "file", file_talk);
 	portuxn(u, 0xb, "datetime", datetime_talk);
     portuxn(u, 0xc, "---", nil_talk);
     portuxn(u, 0xd, "---", nil_talk);
@@ -248,6 +271,9 @@ EWRAM_BSS
 static Uint8 umem[65536];
 
 int main(void) {
+    // Initialize filesystem.
+    fs_init();
+
     // Register interrupts.
     irq_init();
     irs_set(IRQ_VBLANK, irs_stub);
@@ -267,31 +293,6 @@ int main(void) {
             }, &ppu.fg);
     txt_position(0,0);
 
-    fs_init();
-
-    // DEBUG:...
-    int file_idx;
-    char tmp_buffer[KB(1)] = {0};
-    if ((file_idx = fs_open_file("HELLO_FILE")) >= 0) {
-        fs_write("HEY", 3, file_idx, 0, false);
-        fs_write("THERE", 3, file_idx, 1, true);
-        txt_printf("file name: %s\n", filesystem.files[file_idx].name);
-        txt_printf("file size: %d\n", filesystem.files[file_idx].size);
-        if (fs_read(&tmp_buffer, filesystem.files[file_idx].size, file_idx, 0) > 0) {
-            txt_printf("READ: %s\n", tmp_buffer);
-        }
-    }
-    if ((file_idx = fs_open_file("HELLO_FOLKS")) >= 0) {
-        fs_write("AAAAAA", 6, file_idx, 0, false);
-        fs_write("XXX", 3, file_idx, 1, true);
-        txt_printf("file name: %s\n", filesystem.files[file_idx].name);
-        txt_printf("file size: %d\n", filesystem.files[file_idx].size);
-        if (fs_read(&tmp_buffer, filesystem.files[file_idx].size - 1, file_idx, 1) > 0) {
-            txt_printf("READ: %s\n", tmp_buffer);
-        }
-    }
-    txt_printf("num files: %d\n", filesystem.num_files);
-
     // Main loop.
     int frame_counter = 0;
     evaluxn(&u, 0x0100);
-- 
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