Defer cmd execution for console and via http POST

cmd_parser.c

@@ -48,6 +48,7 @@ __xdata uint8_t hexvalue[4] = { 0 };
 
 // Buffer for writing to flash 0x1fd000, copy to 0x1fe000
 __xdata uint8_t cmd_buffer[SBUF_SIZE];
+__xdata uint8_t cmd_available;
 
 __xdata	uint8_t l;
 __xdata uint8_t line_ptr;

cmd_parser.h

@@ -6,6 +6,7 @@
 #include "rtl837x_common.h"
 
 extern __xdata uint8_t cmd_buffer[SBUF_SIZE];
+extern __xdata uint8_t cmd_available;
 
 uint8_t cmd_tokenize(void) __banked;
 void cmd_parser(void) __banked;

httpd/httpd.c

@@ -288,9 +288,8 @@ void handle_post(void)
 		while (*p && *p != '\n' && *p != '\r')
 			cmd_buffer[i++] = *p++;
 		cmd_buffer[i] = '\0';
-
-		if (i && !cmd_tokenize())
-		cmd_parser();
+		if (i)
+			cmd_available = 1;
 	} else if (is_word(request_path, "upload")) {
 		print_string("POST upload request\n");
 		if (!boundary[0]) {

rtlplayground.c

@@ -67,7 +67,6 @@ __xdata volatile uint8_t sbuf_ptr;
 __xdata uint8_t sbuf[SBUF_SIZE];
 __xdata uint8_t sfr_data[4];
 
-extern __xdata uint8_t cmd_buffer[SBUF_SIZE];
 extern __xdata uint8_t gpio_last_value[8];
 
 extern __xdata struct flash_region_t flash_region;
@@ -1021,6 +1020,13 @@ void idle(void)
 			stp_clock--;
 		}
 	}
+	// Check whether a command is waiting in the cmd_buffer and execute
+	if (cmd_available) {
+		cmd_available = 0;
+		if (!cmd_tokenize())
+			cmd_parser();
+		print_string("\n> ");
+	}
 }
 
 
@@ -1805,8 +1811,12 @@ void bootloader(void)
 	// printed out the entered characters
 	__xdata uint8_t l = sbuf_ptr; // We have printed out entered characters until l
 	__xdata uint8_t line_start = sbuf_ptr; // This is where the current line starts
+	cmd_available = 0;
 	while (1) {
 		while (l != sbuf_ptr) {
+			// If the command buffer is currently in use, we cannot copy to it
+			if (cmd_available)
+				break;
 			write_char(sbuf[l]);
 			// Check whether there is a full line:
 			if (sbuf[l] == '\n' || sbuf[l] == '\r') {
@@ -1819,9 +1829,12 @@ void bootloader(void)
 				line_start++;
 				line_start &= (SBUF_SIZE - 1);
 				cmd_buffer[i] = '\0';
-				if (i && !cmd_tokenize())
-					cmd_parser();
-				print_string("\n> ");
+				// If there is a command we print the prompt after execution
+				// otherwise immediately because there is nothing to execute
+				if (i)
+					cmd_available = 1;
+				else
+					print_string("\n> ");
 			}
 			l++;
 			l &= (SBUF_SIZE - 1);