zero_stream: Print more detailed information about each step

1 files changed, 8 insertions, 4 deletions

diff --git a/examples/zero_stream/src/main.zig b/examples/zero_stream/src/main.zig
index 7ba9ecf..7147972 100644
--- a/examples/zero_stream/src/main.zig
+++ b/examples/zero_stream/src/main.zig
@@ -2,6 +2,8 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+const std = @import("std");
+
 const Result = extern struct {
     value: usize,
     status: usize,
@@ -51,7 +53,8 @@ pub fn main() void {
         : "a7", "a1"
     );
 
-    const s3 = "Resource opened";
+    var s3_buf: [128]u8 = undefined;
+    const s3 = std.fmt.bufPrint(&s3_buf, "Resource opened, handle = {d}", .{handle}) catch unreachable;
     asm volatile (
         \\ li a7, 100000
         \\ ecall
@@ -61,17 +64,18 @@ pub fn main() void {
         : "a7"
     );
 
-    var buf: [8]u8 = undefined;
+    var buf = [8]u8{ 1, 2, 3, 4, 5, 6, 7, 8 };
     asm volatile (
         \\ li a7, 100009
         \\ ecall
         :
         : [handle] "{a0}" (handle),
           [buffer] "{a1}" (&buf),
-          [len] "{a2}" (buf.len),
+          [len] "{a2}" (buf.len - 1),
     );
 
-    const s4 = "Bytes read";
+    var s4_buf: [384]u8 = undefined;
+    const s4 = std.fmt.bufPrint(&s4_buf, "Bytes after reading: {any}\r\n", .{buf}) catch unreachable;
     asm volatile (
         \\ li a7, 100000
         \\ ecall