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Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48
From version 8.1
edited by Kevin Wiki
on 2024/07/05 12:23
Change comment: There is no comment for this version
To version 7.3
edited by Kevin Wiki
on 2024/07/05 09:31
Change comment: There is no comment for this version

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... ... @@ -194,77 +194,6 @@
194 194  * Power LED P3V3 - 3.30V
195 195  * Power LED - 0.87 V
196 196  
197 -= Controlling top I/O LED =
198 -
199 -On the top row we have the following input/output devices in order from left to right;
200 -
201 -Left side:
202 -
203 -* physical lock
204 -* lock LED
205 -* warning/service button
206 -* warning/service LED
207 -* locate button
208 -* power LED (red & green)
209 -* fan LED (red & green)
210 -* temperature LED (red & green)
211 -* compute LED (unknown)
212 -
213 -Right side:
214 -
215 -* power LED (red & green)
216 -* fan LED (red & green)
217 -* temperature LED (red & green)
218 -* compute LED (unknown)
219 -* lock switch
220 -
221 -Each sides bank of LEDs are driven by each their PCA9554 shift register. The registers represent the following LEDs: (Note that Lock LED is only present for the LEFT side)
222 -
223 -(% border="1" %)
224 -|=(% scope="row" %)Register|1|2|3|4|5|6|7
225 -|=Device|Power LED Green|Power LED Red|Fan LED Green|Fan LED Red|Temperature LED Green|Temperature LED Red|Lock LED
226 -
227 -To control each LED we shift either a 0 to turn off or 1 to turn on. Since each device shares a single red/green LED (power LED green & power LED red) setting both to 1 at the same time will always leave it red. That is when power LED green and power LED red are both enabled, red always takes precedence.
228 -
229 -Use following script to power LEDs one at a time:
230 -
231 -{{code language="c++"}}
232 -#include <PCA9554.h> // Load the PCA9554 Library
233 -
234 -PCA9554 ioCon1(0x24); // Create an object at this address
235 -
236 -uint8_t mapIO = 0b10000000;
237 -
238 -void shiftL() {
239 - mapIO = (mapIO << 1) | ((mapIO & 0x80) >> 7);
240 -}
241 -
242 -void write() {
243 - Serial.println("writing to PCA9554 device");
244 -
245 - for (int i = 0; i < 8; ++i) {
246 - ioCon1.digitalWrite(i, (mapIO & (1 << i)) ? 0 : 1);
247 - }
248 -}
249 -
250 -void setup()
251 -{
252 - Serial.begin(9600);
253 - Serial.println("Setup");
254 -
255 - ioCon1.portMode(ALLOUTPUT);
256 -}
257 -
258 -void loop()
259 -{
260 - write();
261 - shiftL();
262 -
263 - delay(500);
264 -}
265 -{{/code}}
266 -
267 -
268 268  
269 269  )))
270 270