From 7bf3e02f6c2b66568afb0b45b8a1a6576030b524 Mon Sep 17 00:00:00 2001
From: Totoo <ttotoo@gmail.com>
Date: Mon, 25 Dec 2023 17:25:16 +0100
Subject: [PATCH] Faster usb serial file download (#1674)

* Made file read much faster via USB serial
* Remove old code
---
 firmware/application/usb_serial_shell.cpp | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/firmware/application/usb_serial_shell.cpp b/firmware/application/usb_serial_shell.cpp
index 4a37ae7eb..c7a3516a5 100644
--- a/firmware/application/usb_serial_shell.cpp
+++ b/firmware/application/usb_serial_shell.cpp
@@ -418,21 +418,18 @@ static void cmd_sd_read(BaseSequentialStream* chp, int argc, char* argv[]) {
 
     int size = (int)strtol(argv[0], NULL, 10);
 
-    uint8_t buffer[16];
+    uint8_t buffer[62];
 
     do {
-        File::Size bytes_to_read = size > 16 ? 16 : size;
+        File::Size bytes_to_read = size > 62 ? 62 : size;
         auto bytes_read = shell_file->read(buffer, bytes_to_read);
         if (bytes_read.is_error()) {
             chprintf(chp, "error %d\r\n", bytes_read.error());
             return;
         }
-
-        for (size_t i = 0; i < bytes_read.value(); i++)
-            chprintf(chp, "%02X", buffer[i]);
-
-        chprintf(chp, "\r\n");
-
+        std::string res = to_string_hex_array(buffer, bytes_read.value());
+        res += "\r\n";
+        fillOBuffer(&((SerialUSBDriver*)chp)->oqueue, (const uint8_t*)res.c_str(), res.size());
         if (bytes_to_read != bytes_read.value())
             return;