implement flash suspend

1 files changed, 12 insertions, 10 deletions

diff --git a/flash.c b/flash.c
index 9861b84..f358ee2 100644
--- a/flash.c
+++ b/flash.c
@@ -284,24 +284,26 @@ int readUserBlock(FlashStruct *mem)
 
 void writeUserBlock(FlashStruct *mem, int addr, int numbytes)
 {
-
 	// *** There is a potential issue here.. if the mainfile is corrupt ***
 	// *** and this gets called before readUserBlock then the 			***
 	// *** potentially workable backup will be lost .. we could check   ***
 	// *** that the main file is valid before backing it up I guess...  ***
 	// *** but I don't think this situation should arise.				***
 
-	// backup the main copy of the file
-	if (persistence_copyfile(MAINFILE, BACKUPFILE)) {
-		if (!persistence_freeze(MAINFILE, mem, addr, numbytes, sizeof(*mem), 0)) {
-			if (errno != PERSIST_ERR_COULDNTWRITE) {
-				printf("Error while trying to write, %d. **Write did not happen!!!**\n", errno);
-			} else {
-				printf("Error while writing data to disk. **File is potentially corrupt!**\n");
+	if (!globals.flash_writes_suspended) {
+
+		// backup the main copy of the file
+		if (persistence_copyfile(MAINFILE, BACKUPFILE)) {
+			if (!persistence_freeze(MAINFILE, mem, addr, numbytes, sizeof(*mem), 0)) {
+				if (errno != PERSIST_ERR_COULDNTWRITE) {
+					printf("Error while trying to write, %d. **Write did not happen!!!**\n", errno);
+				} else {
+					printf("Error while writing data to disk. **File is potentially corrupt!**\n");
+				}
 			}
+		} else {
+			printf("Could not backup current file. **Write did not happen!!!**\n");
 		}
-	} else {
-		printf("Could not backup current file. **Write did not happen!!!**\n");
 	}
 }