Catch address over-/underflow

0x007E · 0x007E · commit 7138c1a48c6b · 2024-12-02T15:37:17.000+01:00
diff --git a/firmware/MAD_FW_1_0/matrix/matrix.c b/firmware/MAD_FW_1_0/matrix/matrix.c
@@ -681,9 +681,14 @@ static void matrix_array2buffer(unsigned char *source, volatile unsigned char *d
 static void matrix_ascii2buffer()
 {
     unsigned char temp[MATRIX_DOTS_X];
-    if (matrix_queue_data > 'z')
+
+    if ((matrix_queue_data > '~') || (matrix_queue_data < '!'))
+    {
+        matrix_queue_data = '?';
+    }
+    else if (matrix_queue_data > 'z')
     {
-        matrix_queue_data = matrix_queue_data - ('z' - 'a') - 1; 
+        matrix_queue_data = matrix_queue_data - ('z' - 'a') - 1;
     }
     else
     {

Original file line number	Diff line number	Diff line change
`@@ -681,9 +681,14 @@ static void matrix_array2buffer(unsigned char source, volatile unsigned char d`
`681`	`681`	`static void matrix_ascii2buffer()`
`682`	`682`	`{`
`683`	`683`	`unsigned char temp[MATRIX_DOTS_X];`
`684`		`- if (matrix_queue_data > 'z')`
	`684`	`+`
	`685`	`+ if ((matrix_queue_data > '~') \|\| (matrix_queue_data < '!'))`
	`686`	`+ {`
	`687`	`+ matrix_queue_data = '?';`
	`688`	`+ }`
	`689`	`+ else if (matrix_queue_data > 'z')`
`685`	`690`	`{`
`686`		`- matrix_queue_data = matrix_queue_data - ('z' - 'a') - 1;`
	`691`	`+ matrix_queue_data = matrix_queue_data - ('z' - 'a') - 1;`
`687`	`692`	`}`
`688`	`693`	`else`
`689`	`694`	`{`