X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=ROM2%2Fkeypad.c;h=5ab9b450ca510ad2bb3a873f23eab45946546b1f;hb=caf0c7e19f65db08f81413320f11a8d5a8bea5d2;hp=80a11a76d6b75cd4b4f61e4471986783c15b1097;hpb=0f822a5a37e6e17e027b5a83b8d231a6c0de13eb;p=uccvend-snackrom.git

diff --git a/ROM2/keypad.c b/ROM2/keypad.c
index 80a11a7..5ab9b45 100644
--- a/ROM2/keypad.c
+++ b/ROM2/keypad.c
@@ -1,2 +1,19 @@
 #include "vend.h"
 
+int keypad_read_row() {
+	bclr_misc_output(A3800_DISPLAY_WRITE);  /* disable the display clock */
+
+	_io_ports[M6811_SPDR] = 0;
+	while(!(_io_ports[M6811_SPDR]&M6811_SPIE)); /* wait for completion */
+
+	return _io_ports[M6811_SPDR];
+}
+
+/* row is 0 or 1 */
+void keypad_select_row(int row) {
+	if (row)
+		_io_ports[M6811_PORTD] |= PORTD_KEYPAD_ROW;
+	else
+		_io_ports[M6811_PORTD] &= ~PORTD_KEYPAD_ROW;
+}
+