New U-Boot like AVR main program.

Uses U-Boot source code taken from:
git://git.denx.de/u-boot.git

1 files changed, 58 insertions, 0 deletions

diff --git a/avr/cmd_echo.c b/avr/cmd_echo.c
new file mode 100644
index 0000000..d142ab6
--- /dev/null
+++ b/avr/cmd_echo.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "common.h"
+#include "command.h"
+
+
+int do_echo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	uint_fast8_t putnl = 1;
+	
+	(void) cmdtp; (void) flag;
+
+	for (uint_fast8_t i = 1; i < argc; i++) {
+
+		uint_fast8_t backslash = 0;
+		char *p = argv[i];
+		char c;
+		
+		if (i != 1)
+			putchar(' ');
+		while ((c = *p++) != '\0') {
+		
+			if(backslash) {
+				backslash = 0;
+				if (c == 'c') {
+					putnl = 0;
+					continue;
+				} else
+					putchar('\\');
+			} else {
+				if (c == '\\') {
+					backslash = 1;
+					continue;
+				}
+			}
+			putchar(c);
+		}
+	}			
+					
+	if (putnl)
+		putchar('\n');
+
+	return 0;
+}
+
+#if 0
+U_BOOT_CMD(
+	echo,	CONFIG_SYS_MAXARGS,	1,	do_echo,
+	"echo args to console",
+	"[args..]\n"
+	"    - echo args to console; \\c suppresses newline"
+);
+#endif