From 9d5bfffc145cd6a023a8fcd41451f5532673bce5 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zimon <uzi18@o2.pl>
Date: Wed, 3 Jan 2018 09:59:26 +0100
Subject: [PATCH] - add ajax /console/clear - fix #348

---
 esp-link/main.c   | 1 +
 html/console.html | 5 ++++-
 serial/console.c  | 9 +++++++++
 serial/console.h  | 1 +
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/esp-link/main.c b/esp-link/main.c
index d2a316e..31bcf6e 100644
--- a/esp-link/main.c
+++ b/esp-link/main.c
@@ -88,6 +88,7 @@ HttpdBuiltInUrl builtInUrls[] = {
   { "/log/reset", cgiReset, NULL },
   { "/console/reset", ajaxConsoleReset, NULL },
   { "/console/baud", ajaxConsoleBaud, NULL },
+  { "/console/clear", ajaxConsoleClear, NULL },
   { "/console/fmt", ajaxConsoleFormat, NULL },
   { "/console/text", ajaxConsole, NULL },
   { "/console/send", ajaxConsoleSend, NULL },
diff --git a/html/console.html b/html/console.html
index e621f05..6cb74af 100644
--- a/html/console.html
+++ b/html/console.html
@@ -91,7 +91,10 @@
     $("#clear-button").addEventListener("click", function(e) {
         e.preventDefault();
         var co = $("#console");
-        co.innerHTML = "";
+        ajaxSpin('POST', "/console/clear",
+          function(resp) { showNotification("uC buffer cleared"); co.innerHTML = ""; co.textEnd = 0;},
+          function(s, st) { showWarning("Error clearing buffer in uC"); }
+        );
     });
 
     ajaxJson('GET', "/console/baud",
diff --git a/serial/console.c b/serial/console.c
index d082036..473bcf6 100644
--- a/serial/console.c
+++ b/serial/console.c
@@ -59,6 +59,15 @@ ajaxConsoleReset(HttpdConnData *connData) {
   return HTTPD_CGI_DONE;
 }
 
+int ICACHE_FLASH_ATTR
+ajaxConsoleClear(HttpdConnData *connData) {
+  if (connData->conn==NULL) return HTTPD_CGI_DONE; // Connection aborted. Clean up.
+  jsonHeader(connData, 200);
+  //reset buffer
+  console_rd = console_wr = console_pos = 0;
+  return HTTPD_CGI_DONE;
+}
+
 int ICACHE_FLASH_ATTR
 ajaxConsoleBaud(HttpdConnData *connData) {
   if (connData->conn==NULL) return HTTPD_CGI_DONE; // Connection aborted. Clean up.
diff --git a/serial/console.h b/serial/console.h
index 3020903..f1d2261 100644
--- a/serial/console.h
+++ b/serial/console.h
@@ -7,6 +7,7 @@ void consoleInit(void);
 void ICACHE_FLASH_ATTR console_write_char(char c);
 int ajaxConsole(HttpdConnData *connData);
 int ajaxConsoleReset(HttpdConnData *connData);
+int ajaxConsoleClear(HttpdConnData *connData);
 int ajaxConsoleBaud(HttpdConnData *connData);
 int ajaxConsoleFormat(HttpdConnData *connData);
 int ajaxConsoleSend(HttpdConnData *connData);