From: Jeremy Tan <jeremy@jx.tan.fake>
Date: Wed, 25 Sep 2013 13:22:14 +0000 (+0800)
Subject: semi update lut stuff
X-Git-Url: https://git.ucc.asn.au/?p=matches%2FMCTX3420.git;a=commitdiff_plain;h=6fb169f93cfef6479fd9572aa478270568957f4f

semi update lut stuff
---

diff --git a/notes/pin maps/gpioindex_lut.py b/notes/pin maps/gpioindex_lut.py
index 14457d5..a7b600b 100644
--- a/notes/pin maps/gpioindex_lut.py	
+++ b/notes/pin maps/gpioindex_lut.py	
@@ -4,14 +4,19 @@ from parseit import printlut
 def doit2(x):
     with open(x) as f:
         lut = {}
+        rlut = {}
         i = 0
         for line in f:
             gpionum = int(line)
             lut[gpionum] = i
+            rlut[i] = gpionum
             i += 1
 
         lutarr = []
+        reverse = []
         for i in range(128):
             lutarr.append(lut.get(i, 128))
-        return lutarr
+        for i in range(len(rlut)):
+            reverse.append(rlut[i])
+        return (lutarr, reverse)
         
diff --git a/notes/pin maps/parseit.py b/notes/pin maps/parseit.py
index 0aab5ba..3ebf5c0 100644
--- a/notes/pin maps/parseit.py	
+++ b/notes/pin maps/parseit.py	
@@ -34,14 +34,18 @@ def doit(x):
 def printlut(lut, name="g_gpio_lut"):
     '''print the lut for C'''
     rowsize = 14
-    print("const char %s[%d] = {" % (name, len(lut)))
+    print("const unsigned char %s[%d] = {" % (name, len(lut)))
     low = 0
     high = rowsize
     for i in range(0, len(lut), rowsize):
         print("\t", end="")
-        print(*("%3d" % g for g in lut[low:high]), sep=', ')
+        print(*("%3d" % g for g in lut[low:high]), sep=', ', end="")
         low = high
         high += rowsize
+        if low < len(lut):
+            print(",")
+        else:
+            print("")
     print("}")
 
 
diff --git a/server/Makefile b/server/Makefile
index f3ce6b4..929b40d 100644
--- a/server/Makefile
+++ b/server/Makefile
@@ -2,7 +2,7 @@
 CXX = gcc
 FLAGS = -std=c99 -Wall -pedantic -g -I/usr/include/opencv -I/usr/include/opencv2/highgui -L/usr/lib
 LIB = -lfcgi -lssl -lcrypto -lpthread -lm -lopencv_highgui -lopencv_core -lopencv_ml -lopencv_imgproc
-OBJ = log.o control.o data.o fastcgi.o main.o sensor.o actuator.o image.o bbb_pin.o pin_test.o
+OBJ = log.o control.o data.o fastcgi.o main.o sensor.o actuator.o image.o bbb_pin.o bbb_pin_defines.o pin_test.o
 RM = rm -f
 
 BIN = server
diff --git a/server/bbb_pin.c b/server/bbb_pin.c
index d1e5a23..5ab14e9 100644
--- a/server/bbb_pin.c
+++ b/server/bbb_pin.c
@@ -52,53 +52,18 @@ static PWM_Pin g_pwm[PWM_NUM_PINS] = {{0}};
 
 static char g_buffer[BUFSIZ] = "";
 
-#define GPIO_LUT_SIZE 93
-#define GPIO_INDEX_SIZE 128
-
-/** 
- * A lookup table from header number to GPIO pin number.
- * e.g P8_13 is g_gpio_lut[0*46+13] = g_gpio_lut[13]
- * e.g P9_13 is g_gpio_lut[1*46+13] = g_gpio_lut[59]
- *
- * Where the returned value is 0, there is no GPIO pin
- * at that location.
- */
-const unsigned char g_gpio_lut[GPIO_LUT_SIZE] = {
-	  0,   0,   0,   0,   0,   0,   0,  66,  67,  69,  68,  45,  44,  23,
-	 26,  47,  46,  27,  65,  22,   0,   0,   0,   0,   0,   0,  61,  86,
-	 88,  87,  89,  10,  11,   9,  81,   8,  80,  78,  79,  76,  77,  74,
-	 75,  72,  73,  70,  71,   0,   0,   0,   0,   0,   0,   0,   0,   0,
-	  0,  30,  60,  31,  50,  48,  51,   5,   4,   0,   0,   3,   2,  49,
-	 15, 117,  14, 115,   0,   0, 112,   0,   0,   0,   0,   0,   0,   0,
-	  0,   0,   0,   0,   0,   0,   0,   0,   0
-};
-
-/**
- * Converts GPIO number to index into g_gpio, or 128 if no map.
- */
-const unsigned char g_gpio_index[GPIO_INDEX_SIZE] = {
-	128, 128,   0,   1,   2,   3, 128, 128,   4,   5,   6,   7, 128, 128,
-	  8,   9, 128, 128, 128, 128, 128, 128,  10,  11, 128, 128,  12,  13,
-	128, 128,  14,  15, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-	128, 128,  16,  17,  18,  19,  20,  21,  22,  23, 128, 128, 128, 128,
-	128, 128, 128, 128,  24,  25, 128, 128, 128,  26,  27,  28,  29,  30,
-	 31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42, 128, 128,
-	128, 128,  43,  44,  45,  46, 128, 128, 128, 128, 128, 128, 128, 128,
-	128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
-	 47, 128, 128,  48, 128,  49, 128, 128, 128, 128, 128, 128, 128, 128,
-	128, 128
-};
 
 /**
  * Export a GPIO pin and open the file descriptors
  */
 void GPIO_Export(int pin)
 {
-	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_index[pin] == 128)
+	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_to_index[pin] == 128)
 	{
-		Abort("Not a useable pin (number %d)", pin);
+		Abort("Not a useable pin number: %d", pin);
 	}
 
+	GPIO_Pin *gpio = &g_gpio[g_gpio_to_index[pin]];
 	// Export the pin
 	sprintf(g_buffer, "%s/export", GPIO_DEVICE_PATH);
 	FILE * export = fopen(g_buffer, "w");
@@ -110,7 +75,6 @@ void GPIO_Export(int pin)
 	fprintf(export, "%d", pin);	
 	fclose(export);
 	
-	GPIO_Pin *gpio = &g_gpio[g_gpio_index[pin]];
 	// Setup direction file descriptor
 	sprintf(g_buffer, "%s/gpio%d/direction", GPIO_DEVICE_PATH, pin);
 	gpio->fd_direction = open(g_buffer, O_RDWR);
@@ -137,13 +101,12 @@ void GPIO_Export(int pin)
  */
 void GPIO_Unexport(int pin)
 {
-
-	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_index[pin] == 128)
+	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_to_index[pin] == 128)
 	{
-		Abort("Not a useable pin (number %d)", pin);
+		Abort("Not a useable pin number: %d", pin);
 	}
 
-	GPIO_Pin *gpio = &g_gpio[g_gpio_index[pin]];
+	GPIO_Pin *gpio = &g_gpio[g_gpio_to_index[pin]];
 	// Close file descriptors
 	close(gpio->fd_value);
 	close(gpio->fd_direction);
@@ -288,12 +251,13 @@ void ADC_Unexport()
  */
 void GPIO_Set(int pin, bool value)
 {
-	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_index[pin] == 128)
+	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_to_index[pin] == 128)
 	{
-		Abort("Not a useable pin (number %d)", pin);
+		Abort("Not a useable pin number: %d", pin);
 	}
 
-	GPIO_Pin *gpio = &g_gpio[g_gpio_index[pin]];
+	GPIO_Pin *gpio = &g_gpio[g_gpio_to_index[pin]];
+
 	if (pwrite(gpio->fd_direction, "out", 3, 0) != 3)
 	{
 		Abort("Couldn't set GPIO %d direction - %s", pin, strerror(errno));
@@ -313,13 +277,14 @@ void GPIO_Set(int pin, bool value)
  */
 bool GPIO_Read(int pin)
 {
-	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_index[pin] == 128)
+	if (pin < 0 || pin >= GPIO_INDEX_SIZE || g_gpio_to_index[pin] == 128)
 	{
-		Log(LOGERR, "Not a useable pin (number %d)", pin);
+		Log(LOGERR, "Not a useable pin number: %d", pin);
 		return false;
 	}
 
-	GPIO_Pin *gpio = &g_gpio[g_gpio_index[pin]];
+	GPIO_Pin *gpio = &g_gpio[g_gpio_to_index[pin]];
+
 	if (pwrite(gpio->fd_direction, "in", 2, 0) != 2)
 		Log(LOGERR,"Couldn't set GPIO %d direction - %s", pin, strerror(errno)); 
 	char c = '0';
diff --git a/server/bbb_pin_defines.c b/server/bbb_pin_defines.c
new file mode 100644
index 0000000..e89c6dc
--- /dev/null
+++ b/server/bbb_pin_defines.c
@@ -0,0 +1,45 @@
+#include "bbb_pin_defines.h"
+
+/** 
+ * A lookup table from header number to GPIO pin number.
+ * e.g P8_13 is g_gpio_lut[0*46+13] = g_gpio_lut[13]
+ * e.g P9_13 is g_gpio_lut[1*46+13] = g_gpio_lut[59]
+ *
+ * Where the returned value is 0, there is no GPIO pin
+ * at that location.
+ */
+const unsigned char g_pin_to_gpio[GPIO_LUT_SIZE] = {
+	  0,   0,   0,   0,   0,   0,   0,  66,  67,  69,  68,  45,  44,  23,
+	 26,  47,  46,  27,  65,  22,   0,   0,   0,   0,   0,   0,  61,  86,
+	 88,  87,  89,  10,  11,   9,  81,   8,  80,  78,  79,  76,  77,  74,
+	 75,  72,  73,  70,  71,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+	  0,  30,  60,  31,  50,  48,  51,   5,   4,   0,   0,   3,   2,  49,
+	 15, 117,  14, 115,   0,   0, 112,   0,   0,   0,   0,   0,   0,   0,
+	  0,   0,   0,   0,   0,   0,   0,   0,   0
+};
+
+/**
+ * Converts GPIO number to index for g_gpio, or 128 if no map.
+ */
+const unsigned char g_gpio_to_index[GPIO_INDEX_SIZE] = {
+	128, 128,   0,   1,   2,   3, 128, 128,   4,   5,   6,   7, 128, 128,
+	  8,   9, 128, 128, 128, 128, 128, 128,  10,  11, 128, 128,  12,  13,
+	128, 128,  14,  15, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+	128, 128,  16,  17,  18,  19,  20,  21,  22,  23, 128, 128, 128, 128,
+	128, 128, 128, 128,  24,  25, 128, 128, 128,  26,  27,  28,  29,  30,
+	 31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42, 128, 128,
+	128, 128,  43,  44,  45,  46, 128, 128, 128, 128, 128, 128, 128, 128,
+	128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
+	 47, 128, 128,  48, 128,  49, 128, 128, 128, 128, 128, 128, 128, 128,
+	128, 128
+};
+
+/**
+ * Converts index number of g_gpio into the gpio number
+ */
+const unsigned char g_index_to_gpio[GPIO_NUM_PINS] = {
+	  2,   3,   4,   5,   8,   9,  10,  11,  14,  15,  22,  23,  26,  27,
+	 30,  31,  44,  45,  46,  47,  48,  49,  50,  51,  60,  61,  65,  66,
+	 67,  68,  69,  70,  71,  72,  73,  74,  75,  76,  77,  78,  79,  80,
+	 81,  86,  87,  88,  89, 112, 115, 117
+};
\ No newline at end of file
diff --git a/server/bbb_pin_defines.h b/server/bbb_pin_defines.h
index 661f969..844b406 100644
--- a/server/bbb_pin_defines.h
+++ b/server/bbb_pin_defines.h
@@ -114,6 +114,13 @@
 /** Number of useable GPIO pins **/
 #define GPIO_NUM_PINS 50
 
+/* Luts */
+#define GPIO_LUT_SIZE 93
+#define GPIO_INDEX_SIZE 128
+extern const unsigned char g_pin_to_gpio[GPIO_LUT_SIZE];
+extern const unsigned char g_gpio_to_index[GPIO_INDEX_SIZE];
+extern const unsigned char g_index_to_gpio[GPIO_NUM_PINS];
+
 /** Export path **/
 #define GPIO_DEVICE_PATH "/sys/class/gpio"
 
@@ -148,7 +155,6 @@
 #define PWM_DEVICE_PATH "/sys/class/pwm"
 
 
-
 #endif //_BBB_PIN_DEFINES_H
 
 
diff --git a/server/pin_test.c b/server/pin_test.c
index ca857ec..bcdf92e 100644
--- a/server/pin_test.c
+++ b/server/pin_test.c
@@ -12,8 +12,8 @@
  */
 void Pin_Init()
 {
-	for (int i = 0; i < 128; ++i)
-		GPIO_Export(i);
+	for (int i = 0; i < GPIO_NUM_PINS; ++i)
+		GPIO_Export(g_index_to_gpio[i]);
 
 	for (int i = 0; i < ADC_NUM_PINS; ++i)
 		ADC_Export();
@@ -28,7 +28,7 @@ void Pin_Init()
 void Pin_Close()
 {
 	for (int i = 0; i < GPIO_NUM_PINS; ++i)
-		GPIO_Unexport(i);
+		GPIO_Unexport(g_index_to_gpio[i]);
 
 	for (int i = 0; i < ADC_NUM_PINS; ++i)
 		ADC_Unexport(i);