avr-something

commit 99217a38ca823950df30aab22cc5856cdebeb5cf
parent f729aeca86b6eae7eaf9e231fbaafd9b14bb8822
Author: Henry Wilson <m3henry@googlemail.com>
Date:   Sun,  4 Feb 2018 21:58:20 +0000

starting reding pictor

Diffstat:
M
led-test.cpp
 | 
83
++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------

1 file changed, 57 insertions(+), 26 deletions(-)
diff --git a/led-test.cpp b/led-test.cpp
@@ -2,34 +2,65 @@
 #include "io.h"
 #include <util/delay.h>
 
-int main(void)
+constexpr uint8_t bit(const uint8_t shift)
 {
-	io::direction::B() = 0xFF;
-
-	// OCR0A
-	auto& val = memory(0x47);
-
-	// TCCR0B
-	memory(0x45) = 0x05;
-	// TCCR0A
-	memory(0x44) = 0xC3;
-
+//	static_assert(8 > shift, "must be in range (0, 7)");
+	return uint8_t(1) << shift;
+}
 
-	uint8_t i = 0x00;
-	for (;;)
+namespace lcd
+{
+	auto& control()
+	{
+		return io::pin::A();
+	}
+	auto& data()
+	{
+		return io::pin::C();
+	}
+	
+	namespace signal
+	{
+		constexpr auto select_n = bit(0);
+		constexpr auto backlight = bit(1);
+		constexpr auto reset_n = bit(2);
+		constexpr auto write_n = bit(3);
+		constexpr auto command_n = bit(4);
+		constexpr auto read_n = bit(5);
+		constexpr auto vSync = bit(6);
+		constexpr auto hSync = bit(7);
+	}
+	
+	void init()
+	{
+		control() = 0b11111001;
+		io::direction::A() = 0xFF;
+		io::direction::C() = 0xFF;
+		
+//	FMARK	VSYNC	!READ		DATA/!CTRL	!WRITE	!RESET	BACKLI	!CHIPSELECT
+		
+		_delay_ms(16);
+		control() = 0xFF;
+	}
+	void writeCommand(const uint8_t cmd)
 	{
-		do
-		{
-			i <<= 1;
-			i |= 1;
-			val = i;
-			_delay_ms(500);
-		} while (0xFF != i);
-		do
-		{
-			i >>= 1;
-			val = i;
-			_delay_ms(500);
-		} while (i);
+		// control sequence probably wrong!
+		
+		using namespace signal;
+		control() = ~command_n;
+		data() = cmd;
+		control() = ~(command_n | write_n);
+		control() = 0xFF;
 	}
 }
+
+int main(void) 
+{
+	auto& mcuCtrl = memory(0x55);
+	mcuCtrl |= 0x80;
+	mcuCtrl |= 0x80;
+	
+	lcd::init();
+	
+	for(;;);
+}