Innitial commit, blinky

PT6302.c

@@ -0,0 +1,73 @@
+//
+// Created by lacko on 02/03/2022.
+//
+#include <avr/io.h>
+#include <util/delay.h>
+#include "PT6302.h"
+
+void PT6302_startup (void)
+{
+  PORTB |= (CSBpin | CLKBpin);
+  PORTB &= ~DINpin;
+  PORTC |= RSTpin;
+  DDRB |= (CSBpin | CLKBpin | DINpin);
+  DDRC |= RSTpin;
+  _delay_us (TPRZ);
+  PORTC &= ~RSTpin;
+  _delay_us (TWRSTB);
+};
+
+void transmit_bytes (const uint8_t *payload, const uint8_t size)
+{
+  PORTB &= ~CSBpin;
+  for (int i = 0; i < size; ++i)
+    {
+      uint8_t data = payload[i];
+      for (int j = 0; j < 8; ++j)
+        {
+          PORTB &= ~CLKBpin;
+          if ((data & 0x01) == 0)
+            {
+              PORTB |= DINpin;
+            }
+          else
+            {
+              PORTB &= ~DINpin;
+            }
+          _delay_us (TCW);
+          PORTB |= CLKBpin;
+          _delay_us (TCW);
+          data >> 1;
+        }
+      _delay_us (TDOFF);
+    }
+  _delay_us (DTCSH);
+  PORTB |= CSBpin;
+}
+
+void send_command (const uint8_t command)
+{
+  transmit_bytes (&command, 1);
+}
+
+
+void set_display_brightness (uint8_t level)
+{
+  switch (level)
+    {
+      case 0:send_command (0x0A);
+      break;
+      case 1:send_command (0x2A);
+      break;
+      case 2:send_command (0x4A);
+      break;
+      case 3:send_command (0x6A);
+      break;
+      case 4:send_command (0x8A);
+      break;
+      case 5:send_command (0xAA);
+      break;
+      case 6:send_command (0xCA);
+      default:send_command (0xEA);
+    }
+}