From b15d22a4e43f86058b3b053096ab885a4cef6603 Mon Sep 17 00:00:00 2001
From: Leo C <erbl259-lmu@yahoo.de>
Date: Wed, 3 Dec 2014 15:52:39 +0100
Subject: [PATCH] Make do_fat_stat() and do_fat_ls() interruptible

---
 avr/cmd_fat.c | 49 ++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 40 insertions(+), 9 deletions(-)

diff --git a/avr/cmd_fat.c b/avr/cmd_fat.c
index 9db3b0a..16a5157 100644
--- a/avr/cmd_fat.c
+++ b/avr/cmd_fat.c
@@ -29,6 +29,17 @@ DWORD get_fattime (void)
 }
 
 
+static bool check_abort(void)
+{
+	bool ret = ctrlc();
+
+	if (ret)
+		printf_P(PSTR("Abort\n"));
+
+	return ret;
+}
+
+
 static const FLASH char * const FLASH rc_names[] = {
 			FSTR("OK"),
 			FSTR("DISK_ERR"),
@@ -54,13 +65,15 @@ static const FLASH char * const FLASH rc_names[] = {
 static
 void put_rc (FRESULT rc)
 {
+	if (rc < ARRAY_SIZE(rc_names)) {
 #if GCC_BUG_61443
-	printf_P(PSTR("rc=%u FR_"), rc);
-	my_puts_P(rc_names[rc]);
-	my_puts_P(PSTR("\n"));
+		printf_P(PSTR("rc=%u FR_"), rc);
+		my_puts_P(rc_names[rc]);
+		my_puts_P(PSTR("\n"));
 #else
-	printf_P(PSTR("rc=%u FR_%S\n"), rc, rc_names[rc]);
+		printf_P(PSTR("rc=%u FR_%S\n"), rc, rc_names[rc]);
 #endif
+	}
 }
 
 /* Work register for fs command */
@@ -76,6 +89,20 @@ FILINFO Finfo = {
 FILINFO Finfo;
 #endif
 
+static const FLASH char swirlchar[] = { '-','\\','|','/' };
+
+static void swirl(void)
+{
+	static uint_fast8_t cnt;
+	static uint32_t tstamp;
+
+	if (get_timer(0) > tstamp) {
+		printf_P(PSTR("\b%c"), swirlchar[cnt]);
+		cnt = (cnt+1) % ARRAY_SIZE(swirlchar);
+		tstamp = get_timer(0) + 300;
+	}
+}
+
 static
 FRESULT scan_files (
 	char* path		/* Pointer to the working buffer with start path */
@@ -87,7 +114,7 @@ FRESULT scan_files (
 	char *fn;
 
 	res = f_opendir(&dirs, path);
-
+	swirl();
 	if (res == FR_OK) {
 		i = strlen(path);
 		while (((res = f_readdir(&dirs, &Finfo)) == FR_OK) && Finfo.fname[0]) {
@@ -108,6 +135,10 @@ FRESULT scan_files (
 				AccFiles++;
 				AccSize += Finfo.fsize;
 			}
+			if (check_abort()) {
+				res = 255;
+				break;
+			}
 		}
 	}
 
@@ -167,7 +198,7 @@ command_ret_t do_fat_stat(cmd_tbl_t *cmdtp, int flag, int argc, char * const arg
 			}
 #endif
 			if (!res) {
-				my_puts_P(PSTR("\n..."));
+				my_puts_P(PSTR("\nCounting...  "));
 				AccSize = AccFiles = AccDirs = 0;
 
 				strcpy(buffer, argv[1]);
@@ -246,6 +277,8 @@ command_ret_t do_fat_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 #else
 		printf_P(PSTR("%s\n"), Finfo.fname);
 #endif
+		if (check_abort())
+			break;
 	}
 
 	if (res == FR_OK) {
@@ -362,10 +395,8 @@ command_ret_t do_fat_rw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 							printf_P(PSTR("Disk full?\n"));
 						break;
 					}
-					if (ctrlc()) {
-						printf_P(PSTR("Abort\n"));
+					if (check_abort())
 						break;
-					}
 				}
 
 				FRESULT fr = f_close(&File);
-- 
2.39.2