From dbceed1d2cf34f2c9ddd2a2364fad0ebb9a487f9 Mon Sep 17 00:00:00 2001
From: Tristan Krause <tristan.krause@stud.htwk-leipzig.de>
Date: Fri, 29 Mar 2019 13:35:18 +0100
Subject: [PATCH] Lauffaehig, aber unzuverlaessig

---
 B15F.elf        | Bin 13804 -> 13936 bytes
 B15F.hex        | 199 +++++++++++++++++++++++++-----------------------
 global_vars.cpp |   1 -
 global_vars.h   |   2 -
 requests.cpp    |  25 +++---
 usart.cpp       |  46 ++++++++++-
 usart.h         |   4 +-
 7 files changed, 160 insertions(+), 117 deletions(-)

diff --git a/B15F.elf b/B15F.elf
index 01e941a7a47711c376a23d790eb8a80c77c1bd71..ef11c2d7d565cdf03bb87b7283f239d4935e3c93 100644
GIT binary patch
delta 3086
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delta 2923
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diff --git a/B15F.hex b/B15F.hex
index 8e5321f..a51f56c 100644
--- a/B15F.hex
+++ b/B15F.hex
@@ -8,14 +8,14 @@
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-:1000A000F5001301AA05A705A4056105A1059E0594
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+:1000A000F5001301D505D205CF058C05CC05C90592
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-:1000D000E4ECFBE000E00BBF02C007900D92A232FF
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@@ -24,15 +24,15 @@
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+:1009E00091E00C94610382E291E00E94FA03BC0161
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+:100A0000610382E291E00E94F303682F83E291E0A8
+:100A10000E945802BC0182E291E00C9468038F921C
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+:100A5000FA03EC0182E291E00E94FA035C0182E277
+:100A600091E00E94FA038C016FEF82E291E00E9414
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+:100AA00083E291E00E9458028C01B70182E291E05A
+:100AB0000E946803B80182E291E00E946803CA0DB7
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+:100AD000CF911F910F91FF90EF90DF90CF90BF903B
+:100AE000AF909F908F900C9461030E948B006FEFEA
+:100AF00080E391E00E949C012FE78AE196E021507B
+:100B000080409040E1F700C0000060E080E391E0A9
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+:100B4000C82F60E08DE291E00E949C010FB6F894FE
+:100B5000A895109360000FBED0936000A8958C2FCD
+:100B600090E0FC013197EC30F105B0F6EE5AFF4F02
+:100B70000C9402060E940105CFCF0E94F304CCCF53
+:100B80000E94E504C9CF0E94DC04C6CF0E94D304B2
+:100B9000C3CF0E94C504C0CF0E94B704BDCF0E943E
+:100BA000AA04BACF0E948B04B7CF0E947A04B4CFB4
+:100BB0000E940F05B1CF83E391E00E94160142E04D
+:100BC00063E371E080E391E00E94550143E063E359
+:100BD00071E08DE291E00E94550145E063E371E030
+:100BE0008AE291E00E94550140E063E371E087E210
+:100BF00091E00E94240241E063E371E084E291E02D
+:100C00000C942402EE0FFF1F0024001C0BBE079063
+:0A0C1000F691E02D0994F894FFCF4F
+:100C1A00626F617264696E666F2E680031333A33AF
+:100C2A00323A3430004D6172203239203230313953
+:020C3A000000B8
 :00000001FF
diff --git a/global_vars.cpp b/global_vars.cpp
index 9b88db9..35b855c 100644
--- a/global_vars.cpp
+++ b/global_vars.cpp
@@ -9,4 +9,3 @@ TLC5615 dac1(spi, SPIADR::AA1);
 ADU adu;
 USART usart;
 
-bool ACK_MODE = 1;
diff --git a/global_vars.h b/global_vars.h
index d6206c2..c7ecd0c 100644
--- a/global_vars.h
+++ b/global_vars.h
@@ -15,6 +15,4 @@ extern TLC5615 dac1;
 extern ADU adu;
 extern USART usart;
 
-extern bool ACK_MODE;
-
 #endif // GLOBAL_VARS_H
diff --git a/requests.cpp b/requests.cpp
index 3a83465..3ab761b 100644
--- a/requests.cpp
+++ b/requests.cpp
@@ -14,9 +14,7 @@ void rqBoardInfo()
 	usart.writeStr(DATE, sizeof(DATE));
 	usart.writeStr(TIME, sizeof(TIME));
 	usart.writeStr(FSRC, sizeof(FSRC));
-	
-	if(ACK_MODE)
-		usart.writeByte(USART::MSG_OK);
+	usart.writeByte(USART::MSG_OK);
 }
 
 void rqTestIntConv()
@@ -29,8 +27,7 @@ void rqDigitalWrite0()
 	uint8_t port = usart.readByte();
 	beba0.writePortA(port);
 
-	if(ACK_MODE)
-		usart.writeByte(USART::MSG_OK);
+	usart.writeByte(USART::MSG_OK);
 }
 
 void rqDigitalWrite1()
@@ -38,8 +35,7 @@ void rqDigitalWrite1()
 	uint8_t port = usart.readByte();
 	beba1.writePortA(port);
 
-	if(ACK_MODE)
-		usart.writeByte(USART::MSG_OK);
+	usart.writeByte(USART::MSG_OK);
 }
 
 void rqDigitalRead0()
@@ -59,8 +55,7 @@ void rqAnalogWrite0()
 	uint16_t value = usart.readInt();
 	dac0.setValue(value);
 
-	if(ACK_MODE)
-		usart.writeByte(USART::MSG_OK);
+	usart.writeByte(USART::MSG_OK);
 }
 
 void rqAnalogWrite1()
@@ -68,8 +63,7 @@ void rqAnalogWrite1()
 	uint16_t value = usart.readInt();
 	dac1.setValue(value);
 
-	if(ACK_MODE)
-		usart.writeByte(USART::MSG_OK);
+	usart.writeByte(USART::MSG_OK);
 }
 
 void rqAnalogRead()
@@ -97,7 +91,12 @@ void rqAdcDacStroke()
 		dac0.setValue(i);
 		wdt_reset();
 
-		union doubleword
+		uint16_t val_a = adu.getValue(channel_a);
+		uint16_t val_b = adu.getValue(channel_b);
+		usart.writeInt(val_a);
+		usart.writeInt(val_b);
+
+		/*union doubleword
 		{
 			uint16_t word[2];
 			uint8_t  byte[4];
@@ -115,7 +114,7 @@ void rqAdcDacStroke()
 
 			if(ret == 0)
 				return;
-		} while(ret != USART::MSG_OK);
+		} while(ret != USART::MSG_OK);*/
 	}
 	
 	usart.writeByte(USART::MSG_OK);
diff --git a/usart.cpp b/usart.cpp
index 324e080..57d8f15 100644
--- a/usart.cpp
+++ b/usart.cpp
@@ -15,12 +15,22 @@ void USART::init()
 
 }
 
+void USART::flush()
+{
+	uint8_t dummy;
+	while (UCSR0A & (1<<RXC0))
+		dummy = UDR0;
+
+	if(dummy) // taeusche dummy Verwendung vor
+		return;
+}
+
 void USART::writeByte(uint8_t b)
 {
 	while (!(UCSR0A & (1<<UDRE0)));
 	UDR0 = b;
 
-	while(!(UCSR0A & _BV(TXC0)));
+	//while(!(UCSR0A & _BV(TXC0)));
 }
 
 
@@ -35,8 +45,7 @@ void USART::writeInt(uint16_t v)
 	while (!(UCSR0A & (1<<UDRE0)));
 	UDR0 = v & 0xFF;
 
-	while(!(UCSR0A & _BV(TXC0)));
-	_delay_ms(1);
+	//while(!(UCSR0A & _BV(TXC0)));
 }
 
 void USART::writeStr(const char* str, uint8_t len)
@@ -80,3 +89,34 @@ uint16_t USART::readInt()
 	v |= readByte() << 8;
 	return v;
 }
+
+void USART::readBlock(uint8_t* ptr, uint8_t offset)
+{
+	ptr += offset;
+	uint8_t crc = 0;
+
+	uint8_t len = readByte();
+	for(uint8_t k = 0; k <= len; k++) // len + 1 Durchgänge (+ crc)
+	{
+		uint8_t next = readByte();
+
+		crc ^= next;
+		for (uint8_t i = 0; i < 8; i++)
+		{
+			if (crc & 1)
+				crc ^= CRC7_POLY;
+			crc >>= 1;
+		}
+
+		if(k < len)
+			ptr[k] = next;
+	}
+
+	if(crc == 0)
+	{
+		writeByte(MSG_OK);
+		return;
+	}
+	
+	writeByte(MSG_FAIL);
+}
diff --git a/usart.h b/usart.h
index 81a43c1..ade6b77 100644
--- a/usart.h
+++ b/usart.h
@@ -5,13 +5,14 @@
 #include <util/delay.h>
 #include <stdint.h>
 
-constexpr uint32_t BAUDRATE = 38400; // 38400
+constexpr uint32_t BAUDRATE = 115200; // 38400
 constexpr uint8_t  CRC7_POLY = 0x91;
 
 class USART
 {
 public:
 	void init(void);
+	void flush(void);
 
 	void writeByte(uint8_t);
 	void writeInt(uint16_t);
@@ -21,6 +22,7 @@ public:
 	uint8_t readByte(void);
 	uint16_t readInt(void);
 	uint32_t readLong(void);
+	void readBlock(uint8_t*, uint8_t);
 
 	constexpr static uint8_t MSG_OK = 0xFF;
 	constexpr static uint8_t MSG_FAIL = 0xFE;