From a34ee32c743b35170777038a4c3ebbabf5686b43 Mon Sep 17 00:00:00 2001
From: Benedict <benedict@0xb8000.de>
Date: Mon, 16 Apr 2018 10:23:49 +0200
Subject: eeprom: control logic: define instructions layout and write out
 script

---
 eeprom_pi.py | 63 +++++++++++++++++++++++++++++-------------------------------
 1 file changed, 30 insertions(+), 33 deletions(-)

(limited to 'eeprom_pi.py')

diff --git a/eeprom_pi.py b/eeprom_pi.py
index e51f4b8..e45678b 100644
--- a/eeprom_pi.py
+++ b/eeprom_pi.py
@@ -32,15 +32,12 @@ def init_board(write = True):
 	GPIO.setup(19, GPIO.OUT)
 	GPIO.setup(10, GPIO.OUT)
 	GPIO.setup(8, GPIO.OUT)
-
-	# used to trigger a write
 	GPIO.setup(5, GPIO.OUT)
 
 	# used to read
 	GPIO.setup(3, GPIO.OUT)
 
 	# set the pins to high, pins are active low
-	GPIO.output(5, True)
 	GPIO.output(3, True)
 
 
@@ -49,22 +46,22 @@ def read_data():
 	GPIO.output(3, False)
 	time.sleep(0.3)
 	data = (GPIO.input(11))  
-	print(GPIO.input(11))
+	#print(GPIO.input(11))
 	data |= (GPIO.input(12) << 0x1) 
-	print(GPIO.input(12))
+	#print(GPIO.input(12))
 	data |= (GPIO.input(13) << 0x2) 
-	print(GPIO.input(13))
+	#print(GPIO.input(13))
 	data |= (GPIO.input(15) << 0x3) 
-	print(GPIO.input(15))
+	#print(GPIO.input(15))
 	data |= (GPIO.input(16) << 0x4) 
-	print(GPIO.input(16))
+	#print(GPIO.input(16))
 	data |= (GPIO.input(18) << 0x5) 
-	print(GPIO.input(18))
+	#print(GPIO.input(18))
 	data |= (GPIO.input(22) << 0x6) 
-	print(GPIO.input(22))
+	#print(GPIO.input(22))
 	data |= (GPIO.input(7) << 0x7)
-	print(GPIO.input(7))
-	print("read data: %s" % data)
+	#print(GPIO.input(7))
+	#print("read data: %s" % data)
 	time.sleep(0.3)
 	GPIO.output(3, True)
 	return data
@@ -72,40 +69,39 @@ def read_data():
 # data should be one byte
 def set_data(data):
 	GPIO.output(11, (data & 0x1) > 0)
-	print((data & 0x1) > 0)
+	#print((data & 0x1) > 0)
 	GPIO.output(12, (data & 0x2) > 0)
-	print((data & 0x2) > 0)
+	#print((data & 0x2) > 0)
 	GPIO.output(13, (data & 0x4) > 0)
-	print((data & 0x4) > 0)
+	#print((data & 0x4) > 0)
 	GPIO.output(15, (data & 0x8) > 0)
-	print((data & 0x8) > 0)
+	#print((data & 0x8) > 0)
 	GPIO.output(16, (data & 0x10) > 0)
-	print((data & 0x10) > 0)
+	#print((data & 0x10) > 0)
 	GPIO.output(18, (data & 0x20) > 0)
-	print((data & 0x20) > 0)
+	#print((data & 0x20) > 0)
 	GPIO.output(22, (data & 0x40) > 0)
-	print((data & 0x40) > 0)
+	#print((data & 0x40) > 0)
 	GPIO.output(7, (data & 0x80) > 0)
-	print((data & 0x80) > 0)
+	#print((data & 0x80) > 0)
 
 # address should be one byte
 def set_address(address):
 	GPIO.output(26, (address & 0x1) > 0)
-	print((address & 0x1) > 0)
+	#print((address & 0x1) > 0)
 	GPIO.output(24, (address & 0x2) > 0)
-	print((address & 0x2) > 0)
+	#print((address & 0x2) > 0)
 	GPIO.output(23, (address & 0x4) > 0)
-	print((address & 0x4) > 0)
+	#print((address & 0x4) > 0)
 	GPIO.output(21, (address & 0x8) > 0)
-	print((address & 0x8) > 0)
+	#print((address & 0x8) > 0)
 	GPIO.output(19, (address & 0x10) > 0)
-	print((address & 0x10) > 0)
+	#print((address & 0x10) > 0)
 	GPIO.output(10, (address & 0x20) > 0)
-	print((address & 0x20) > 0)
+	#print((address & 0x20) > 0)
 	GPIO.output(8, (address & 0x40) > 0)
-	print((address & 0x40) > 0)
-	# for DEBUG use only 7 address bits to have one left for read trigger
-	#GPIO.output(5, (address & 0x80) > 0)
+	#print((address & 0x40) > 0)
+	GPIO.output(5, (address & 0x80) > 0)
 	#print((address & 0x80) > 0)
 
 def write_data_at(address, data):
@@ -115,10 +111,10 @@ def write_data_at(address, data):
 	set_data(data)
 	# wait so everythings is stable
 	time.sleep(0.3)
-	# trigger write on pin 5
-	GPIO.output(5, False)
+	# trigger write on pin 3
+	GPIO.output(3, False)
 	time.sleep(0.3)
-	GPIO.output(5, True)
+	GPIO.output(3, True)
 
 
 def read_data_at(address):
@@ -128,4 +124,5 @@ def read_data_at(address):
 	time.sleep(0.3)
 	# trigger output enable
 	data = read_data()
-	print("read data %s" % data)
+	print("read data %s, hex: %s" % (data, hex(data)))
+	return data
-- 
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