1 files changed, 91 insertions, 0 deletions
diff --git a/avr/con-utils.c b/avr/con-utils.c
new file mode 100644
index 0000000..430ba98
--- /dev/null
+++ b/avr/con-utils.c
@@ -0,0 +1,91 @@
+
+#include <string.h>
+#include <stdio.h>
+
+#include "serial.h"
+#include "con-utils.h"
+
+
+uint_fast8_t tstc(void)
+{
+	return serial_tstc();
+}
+
+int my_getchar(void)
+{
+	int c;
+	
+	while((c = serial_getc()) < 0)
+		;
+	return c;
+}
+
+
+/* test if ctrl-c was pressed */
+
+static uint_fast8_t ctrlc_disabled = 0;	/* see disable_ctrl() */
+static uint_fast8_t ctrlc_was_pressed = 0;
+
+uint_fast8_t ctrlc(void)
+{
+	if (!ctrlc_disabled) {
+		switch (serial_getc()) {
+		case 0x03:		/* ^C - Control C */
+			ctrlc_was_pressed = 1;
+			return 1;
+		default:
+			break;
+		}
+	}
+	return 0;
+}
+
+/* Reads user's confirmation.
+   Returns 1 if user's input is "y", "Y", "yes" or "YES"
+*/
+uint_fast8_t confirm_yesno(void)
+{
+	unsigned int i;
+	char str_input[5];
+
+	/* Flush input */
+	while (serial_getc())
+		;
+	i = 0;
+	while (i < sizeof(str_input)) {
+		str_input[i] = my_getchar();
+		putchar(str_input[i]);
+		if (str_input[i] == '\r')
+			break;
+		i++;
+	}
+	putchar('\n');
+	if (strncmp(str_input, "y\r", 2) == 0 ||
+	    strncmp(str_input, "Y\r", 2) == 0 ||
+	    strncmp(str_input, "yes\r", 4) == 0 ||
+	    strncmp(str_input, "YES\r", 4) == 0)
+		return 1;
+	return 0;
+}
+
+/* pass 1 to disable ctrlc() checking, 0 to enable.
+ * returns previous state
+ */
+uint_fast8_t disable_ctrlc(uint_fast8_t disable)
+{
+	uint_fast8_t prev = ctrlc_disabled;	/* save previous state */
+
+	ctrlc_disabled = disable;
+	return prev;
+}
+
+uint_fast8_t had_ctrlc (void)
+{
+	return ctrlc_was_pressed;
+}
+
+void clear_ctrlc(void)
+{
+	ctrlc_was_pressed = 0;
+}
+