Changes for page Front I/O

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...	...	@@ -6,9 +6,19 @@
6	6
7	7	There is a single cable that controls four parts, each half side of I/O LED and center column of blue LEDs.
8	8
9		-== ==
	9	+== Sub-paragraph ==
10	10
	11	+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
11	11
	13	+== Sub-paragraph ==
	14	+
	15	+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
	16	+
	17	+=== Sub-sub paragraph ===
	18	+
	19	+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
	20	+
	21	+
12	12	= How we got here =
13	13
14	14	Measure out the ground and power signals by comparing with other chips on board. E.g. we find [SAA1064T] datasheet, locate the GND (Vee) and 5V (Vcc) and measure connectivity (0 ohm resistance) between chip pins and cable pins. This gives us pins GND 2 & 8 and PWR 16 & 22.
...	...	@@ -141,54 +141,27 @@
141	141	}
142	142	{{/code}}
143	143
144		-== SAA1064T data for driving center IO LED stack ==
145		-
146		-Center IO stack is a stack of 23 LED's, 22 blue and 1 green for ethernet activity. These are duplicated next to each other and driven by each their SAA1064T chips. Earlier we found the i2c address and just by playing around figured out that 4 segments of 1 byte binary values are used to set ship register.
147		-
148		-{{code language="C++"}}
149		-void fillColumns() {
150		- Serial.println("filling columns");
151		- Wire.beginTransmission(saa1064);
152		- Wire.write(1);
153		- Wire.write(0x7F); // 127 - 1111111
154		- Wire.write(0x7F); // 127 - 1111111
155		- Wire.write(0x7F); // 127 - 1111111
156		- Wire.write(0x1F); // 31 - 11111
157		- Wire.endTransmission();
158		-
159		- colsFilled = 1;
160		-}
161		-{{/code}}
162		-
163		-(% class="wikigeneratedid" %)
164		-Here the last byte we send only is 5 bits since we only have 5 LEDs instead of 6 to address (total of 23). Also note that we start the transmission with a single bit.
165		-
166	166	== Pinouts voltages from MLB ==
167	167
168	168	Powered off:
169	169
170	170	* PWR fail LED - 0.00 V
171		-* UID LED - 4.5V
172	172	* OH/Fan fail LED - 4.72 V
173	173	* NIC1 LED - 0.8 - 2.6 V
174	174	* NIC2 LED - 2.95 V
175		-* UID SW - 2.8V
176	176	* HDD LED - 0.00 V
177		-* Power LED P3V3 - 0.00V
178	178	* Power LED - 0.00 V after unplug grows
179	179
180	180	Powered on:
181	181
182	182	* PWR tail LED - 3.47 V
183		-* UID LED - 4.85V
184	184	* OH/Fan failed LED - 5 V
185	185	* NIC 1 LED - 1.2 - 2.9 V
186	186	* NIC 2 LED - 3.2 V
187		-* UID SW - 3V
188	188	* HDD LED - 3 V
189		-* Power LED P3V3 - 3.30V
190	190	* Power LED - 0.87 V
191	191
	174	+
192	192
193	193	)))
194	194
...	...	@@ -210,6 +210,5 @@
210	210
211	211
212	212
213		-
214	214	)))
215	215	)))