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Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48
From version 2.5
edited by Kevin Wiki
on 2024/07/04 22:57
Change comment: There is no comment for this version
To version 2.3
edited by Kevin Wiki
on 2024/07/04 18:14
Change comment: There is no comment for this version

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... ... @@ -151,47 +151,25 @@
151 151  }
152 152  {{/code}}
153 153  
154 -== SAA1064T data for driving center IO ==
155 -
156 -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.
157 -
158 -{{code language="C++"}}
159 -void fillColumns() {
160 - Serial.println("filling columns");
161 - Wire.beginTransmission(saa1064);
162 - Wire.write(1);
163 - Wire.write(0x7F); // 127 - 1111111
164 - Wire.write(0x7F); // 127 - 1111111
165 - Wire.write(0x7F); // 127 - 1111111
166 - Wire.write(0x1F); // 31 - 11111
167 - Wire.endTransmission();
168 -
169 - colsFilled = 1;
170 -}
171 -{{/code}}
172 -
173 -(% class="wikigeneratedid" %)
174 -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.
175 -
176 176  == Pinouts voltages from MLB ==
177 177  
178 178  Powered off:
179 179  
180 180  * PWR fail LED - 0.00 V
181 -* UID LED - 4.5V
182 182  * OH/Fan fail LED - 4.72 V
183 183  * NIC1 LED - 0.8 - 2.6 V
184 184  * NIC2 LED - 2.95 V
185 -* UID SW - 2.8V
186 186  * HDD LED - 0.00 V
187 -* Power LED P3V3 - 0.00V
188 188  * Power LED - 0.00 V after unplug grows
164 +* Power LED P3V3 - 0.00V
165 +* UID SW - 2.8V
166 +* UID LED - 4.5V
189 189  
190 190  Powered on:
191 191  
192 192  * PWR tail LED - 3.47 V
193 -* UID LED - 4.85V
194 194  * OH/Fan failed LED - 5 V
172 +* UID LED - 4.85V
195 195  * NIC 1 LED - 1.2 - 2.9 V
196 196  * NIC 2 LED - 3.2 V
197 197  * UID SW - 3V
... ... @@ -199,6 +199,7 @@
199 199  * Power LED P3V3 - 3.30V
200 200  * Power LED - 0.87 V
201 201  
180 +
202 202  
203 203  )))
204 204  
... ... @@ -220,6 +220,5 @@
220 220  
221 221  
222 222  
223 -
224 224  )))
225 225  )))