prepare display

game-ctrl/display.c

@@ -0,0 +1,50 @@
+#include <stdint.h>
+
+#include "display.h"
+#include "spi.h"
+
+
+uint16_t score;
+
+
+void displayInit() {
+  score = 0;
+
+  spiSendBegin(e_SPI_DISPLAY);
+
+  // display test off
+  spiSendOctet(0x0f);
+  spiSendOctet(0x01);
+
+  // BCD decode for all digits
+  spiSendOctet(0x09);
+  spiSendOctet(0xff);
+
+  // scan limit to digits 0-3
+  spiSendOctet(0x0b);
+  spiSendOctet(0x03);
+
+  // intensity
+  spiSendOctet(0x0a);
+  spiSendOctet(0x0f);
+
+
+  // normal operation
+  spiSendOctet(0x0C);
+  spiSendOctet(0x01);
+
+  spiSendEnd(e_SPI_DISPLAY);
+}
+
+
+
+void displaySetScore(uint16_t v) {
+  score = v;
+
+  spiSendBegin(e_SPI_DISPLAY);
+
+  spiSendOctet(0x01);
+  spiSendOctet(0x07);
+
+  spiSendEnd(e_SPI_DISPLAY);
+}