From b5bf389db17fe097150310989edfad64a52fa52c Mon Sep 17 00:00:00 2001
From: Alexey 'Cluster' Avdyukhin <clusterrr@clusterrr.com>
Date: Tue, 6 Jan 2015 15:24:49 +0300
Subject: Code clean up

---
 clujtag.c | 91 ++++++++++++++++++++++++++++++++-------------------------------
 clujtag.h | 12 +++++++++
 defines.h | 18 +++++--------
 3 files changed, 65 insertions(+), 56 deletions(-)
 create mode 100644 clujtag.h

diff --git a/clujtag.c b/clujtag.c
index 56265d3..5392ea3 100644
--- a/clujtag.c
+++ b/clujtag.c
@@ -1,4 +1,5 @@
 #include "USBtoSerial.h"
+#include "clujtag.h"
 #include "defines.h"
 #include "jtag_commands.h"
 
@@ -52,25 +53,25 @@ uint8_t get_usb_byte(void)
 
 void jtag_shutdown(void)
 {
-	PORT &= ~((1<<PIN_TMS) | (1<<PIN_TCK) | (1<<PIN_TDO) | (1<<PIN_TDI));
-	PORT_DDR &= ~((1<<PIN_TMS) | (1<<PIN_TCK) | (1<<PIN_TDO) | (1<<PIN_TDI));
+	PORT &= ~((1<<TMS_PIN) | (1<<TCK_PIN) | (1<<TDO_PIN) | (1<<TDI_PIN));
+	PORT_DDR &= ~((1<<TMS_PIN) | (1<<TCK_PIN) | (1<<TDO_PIN) | (1<<TDI_PIN));
 }
 
 void jtag_setup(void)
 {
-	PORT &= ~((1<<PIN_TMS) | (1<<PIN_TCK) | (1<<PIN_TDO) | (1<<PIN_TDI));
-	PORT_DDR |= (1<<PIN_TMS) | (1<<PIN_TCK) | (1<<PIN_TDI);
-	PORT_DDR &= ~(1<<PIN_TDO);
+	PORT &= ~((1<<TMS_PIN) | (1<<TCK_PIN) | (1<<TDO_PIN) | (1<<TDI_PIN));
+	PORT_DDR |= (1<<TMS_PIN) | (1<<TCK_PIN) | (1<<TDI_PIN);
+	PORT_DDR &= ~(1<<TDO_PIN);
 }
 
 int main(void)
 {
 	int initialized = 0;
 	jtag_shutdown();
-#ifdef PIN_LED
-#ifdef LED_PORT_DDR
-	LED_PORT_DDR |= 1<<PIN_LED;
-	LED_PORT &= ~(1<<PIN_LED);
+#ifdef LED_PIN
+#ifdef PORT_LED_DDR
+	PORT_LED_DDR |= 1<<LED_PIN;
+	PORT_LED &= ~(1<<LED_PIN);
 #endif
 #endif
 
@@ -82,10 +83,10 @@ int main(void)
 	{
 		uint8_t command = get_usb_byte();
 		uint8_t data, data2, ok, v, n;		
-#ifdef PIN_LED
-#ifdef LED_PORT
+#ifdef LED_PIN
+#ifdef PORT_LED
 		if (initialized)
-			LED_PORT ^= 1<<PIN_LED;
+			PORT_LED ^= 1<<LED_PIN;
 #endif
 #endif
 	
@@ -94,9 +95,9 @@ int main(void)
 			case JTAG_SETUP:
 				jtag_setup();
 				initialized = 1;
-#ifdef PIN_LED
-#ifdef LED_PORT
-				LED_PORT |= 1<<PIN_LED;
+#ifdef LED_PIN
+#ifdef PORT_LED
+				PORT_LED |= 1<<LED_PIN;
 #endif
 #endif
 				break;
@@ -104,9 +105,9 @@ int main(void)
 			case JTAG_SHUTDOWN:
 				jtag_shutdown();
 				initialized = 0;
-#ifdef PIN_LED
-#ifdef LED_PORT
-				LED_PORT &= ~(1<<PIN_LED);
+#ifdef LED_PIN
+#ifdef PORT_LED
+				PORT_LED &= ~(1<<LED_PIN);
 #endif
 #endif
 				break;
@@ -116,31 +117,31 @@ int main(void)
 				data = get_usb_byte();
 				if (data == 0xff) continue;
 				if (data) 
-					PORT |= (1<<PIN_TMS);
+					PORT |= (1<<TMS_PIN);
 				else
-					PORT &= ~(1<<PIN_TMS);
+					PORT &= ~(1<<TMS_PIN);
 				break;
 
 			case JTAG_SET_TCK:
 				data = get_usb_byte();
 				if (data == 0xff) continue;
 				if (data) 
-					PORT |= (1<<PIN_TCK);
+					PORT |= (1<<TCK_PIN);
 				else
-					PORT &= ~(1<<PIN_TCK);
+					PORT &= ~(1<<TCK_PIN);
 				break;
 					
 			case JTAG_SET_TDI:
 				data = get_usb_byte();
 				if (data == 0xff) continue;
 				if (data)
-					PORT |= (1<<PIN_TDI);
+					PORT |= (1<<TDI_PIN);
 				else
-					PORT &= ~(1<<PIN_TDI);
+					PORT &= ~(1<<TDI_PIN);
 				break;
 					
 			case JTAG_GET_TDO:
-				CDC_Device_SendByte(&VirtualSerial_CDC_Interface, (PORT_PIN >> PIN_TDO) & 1);	
+				CDC_Device_SendByte(&VirtualSerial_CDC_Interface, (PORT_PIN >> TDO_PIN) & 1);	
 				break;
 			*/
 					
@@ -148,23 +149,23 @@ int main(void)
 				data = get_usb_byte();
 				if (data == 0xff) continue;
 				if (data&1) 
-					PORT |= (1<<PIN_TMS);
+					PORT |= (1<<TMS_PIN);
 				else
-					PORT &= ~(1<<PIN_TMS);
+					PORT &= ~(1<<TMS_PIN);
 				if (data&(1<<1))
-					PORT |= (1<<PIN_TDI);
+					PORT |= (1<<TDI_PIN);
 				else
-					PORT &= ~(1<<PIN_TDI);
-				PORT &= ~(1<<PIN_TCK);
+					PORT &= ~(1<<TDI_PIN);
+				PORT &= ~(1<<TCK_PIN);
 				_delay_us(1);
-				PORT |= 1<<PIN_TCK;
-				CDC_Device_SendByte(&VirtualSerial_CDC_Interface, (PORT_PIN >> PIN_TDO) & 1);
+				PORT |= 1<<TCK_PIN;
+				CDC_Device_SendByte(&VirtualSerial_CDC_Interface, (PORT_PIN >> TDO_PIN) & 1);
 				break;
 					
 			case JTAG_PULSE_SCK:
-				PORT &= ~(1<<PIN_TCK);
+				PORT &= ~(1<<TCK_PIN);
 				_delay_us(1);
-				PORT |= 1<<PIN_TCK;
+				PORT |= 1<<TCK_PIN;
 				break;
 
 			case JTAG_PULSE_TCK_DELAY:
@@ -173,14 +174,14 @@ int main(void)
 				data2 = get_usb_byte();
 				if (data2 == 0xff) continue;
 				if (data) 
-					PORT |= (1<<PIN_TMS);
+					PORT |= (1<<TMS_PIN);
 				else
-					PORT &= ~(1<<PIN_TMS);
+					PORT &= ~(1<<TMS_PIN);
 				for (n = 0; n < data2; n++)
 				{
-					PORT &= ~(1<<PIN_TCK);
+					PORT &= ~(1<<TCK_PIN);
 					_delay_us(1);
-					PORT |= 1<<PIN_TCK;
+					PORT |= 1<<TCK_PIN;
 					_delay_us(1);
 				}
 				break;
@@ -195,23 +196,23 @@ int main(void)
 					v = get_usb_byte();
 					if (v == 0xff) break;
 					if (v&1) 
-						PORT |= (1<<PIN_TMS);
+						PORT |= (1<<TMS_PIN);
 					else
-						PORT &= ~(1<<PIN_TMS);
+						PORT &= ~(1<<TMS_PIN);
 					if (v&(1<<1))
 					{
 						if (v&(1<<2))
-							PORT |= (1<<PIN_TDI);
+							PORT |= (1<<TDI_PIN);
 						else
-							PORT &= ~(1<<PIN_TDI);
+							PORT &= ~(1<<TDI_PIN);
 					}
-					PORT &= ~(1<<PIN_TCK);
+					PORT &= ~(1<<TCK_PIN);
 					_delay_us(1);
-					PORT |= 1<<PIN_TCK;
+					PORT |= 1<<TCK_PIN;
 					_delay_us(1);
 					if (v&(1<<3))
 					{
-						if (((v >> 4)&1) != ((PORT_PIN >> PIN_TDO) & 1))
+						if (((v >> 4)&1) != ((PORT_PIN >> TDO_PIN) & 1))
 							ok = 0;
 					}
 				}
diff --git a/clujtag.h b/clujtag.h
new file mode 100644
index 0000000..a525c19
--- /dev/null
+++ b/clujtag.h
@@ -0,0 +1,12 @@
+#include <defines.h>
+
+#define CLUJTAG_CONCAT(a, b)            a ## b
+#define CLUJTAG_OUTPORT(name)           CLUJTAG_CONCAT(PORT, name)
+#define CLUJTAG_INPORT(name)            CLUJTAG_CONCAT(PIN, name)
+#define CLUJTAG_DDRPORT(name)           CLUJTAG_CONCAT(DDR, name)
+
+#define PORT CLUJTAG_OUTPORT(JTAG_PORT)
+#define PORT_DDR CLUJTAG_DDRPORT(JTAG_PORT)
+#define PORT_PIN CLUJTAG_INPORT(JTAG_PORT)
+#define PORT_LED CLUJTAG_OUTPORT(LED_PORT)
+#define PORT_LED_DDR CLUJTAG_DDRPORT(LED_PORT)
diff --git a/defines.h b/defines.h
index 6d3d7e8..6ff4d1c 100644
--- a/defines.h
+++ b/defines.h
@@ -1,12 +1,8 @@
-#define PORT PORTB
-#define PORT_DDR DDRB
-#define PORT_PIN PINB
+#define JTAG_PORT B
+#define TMS_PIN 0
+#define TCK_PIN 1
+#define TDO_PIN 2
+#define TDI_PIN 3
 
-#define PIN_TMS 0
-#define PIN_TCK 1
-#define PIN_TDO 2
-#define PIN_TDI 3
-
-#define LED_PORT PORTD
-#define LED_PORT_DDR DDRD
-#define PIN_LED 6
+#define LED_PORT D
+#define LED_PIN 6
-- 
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