cppcheck fixes

2 files changed, 5 insertions, 5 deletions

diff --git a/bus.c b/bus.c
index 3f0dbc6..e733cdf 100644
--- a/bus.c
+++ b/bus.c
@@ -259,7 +259,7 @@ static int gpio_export(unsigned gpio_pin)
 {
 	FILE* exportfile = fopen(GPIO_SYSFSPATH"/"GPIO_EXPORTNODE, "w");
 	if (exportfile != NULL) {
-		fprintf(exportfile, "%d\n", gpio_pin);
+		fprintf(exportfile, "%u\n", gpio_pin);
 		fclose(exportfile);
 		return 0;
 	}
@@ -274,7 +274,7 @@ static int gpio_unexport(unsigned gpio_pin)
 {
 	FILE* unexportfile = fopen(GPIO_SYSFSPATH"/"GPIO_UNEXPORTNODE, "w");
 	if (unexportfile != NULL) {
-		fprintf(unexportfile, "%d\n", gpio_pin);
+		fprintf(unexportfile, "%u\n", gpio_pin);
 		fclose(unexportfile);
 		return 0;
 	}
@@ -288,7 +288,7 @@ static int gpio_unexport(unsigned gpio_pin)
 static int gpio_changedirection(unsigned gpio_pin, bool out)
 {
 	char path[PATHLEN];
-	snprintf(path, PATHLEN, GPIO_SYSFSPATH"/gpio%d/"GPIO_DIRECTIONNODE, gpio_pin);
+	snprintf(path, PATHLEN, GPIO_SYSFSPATH"/gpio%u/"GPIO_DIRECTIONNODE, gpio_pin);
 	FILE* directionfile = fopen(path, "w");
 	if (directionfile != NULL) {
 		if (out) {
@@ -305,7 +305,7 @@ static int gpio_changedirection(unsigned gpio_pin, bool out)
 
 static void gpio_getvaluenodepath(unsigned gpio_pin, char* buffer)
 {
-	snprintf(buffer, PATHLEN, GPIO_SYSFSPATH"/gpio%d/"GPIO_VALUENODE, gpio_pin);
+	snprintf(buffer, PATHLEN, GPIO_SYSFSPATH"/gpio%u/"GPIO_VALUENODE, gpio_pin);
 }
 
 /*
diff --git a/dds.c b/dds.c
index 8002d78..fe6a35d 100644
--- a/dds.c
+++ b/dds.c
@@ -36,7 +36,7 @@ void dds_setamplitude(float millivolts)
 	char scalebuff[64];
 
 	if (read(scalefd, scalebuff, sizeof(scalebuff))) {
-		sscanf(scalebuff, "%f\n", &scale);
+		sscanf(scalebuff, "%10f\n", &scale); // the string should be ?.??? but round up the width a bit just in case
 	}
 
 	if (scale == 0) {