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Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48
From version 7.5
edited by Kevin Wiki
on 2024/07/05 10:29
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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... ... @@ -194,76 +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 -|=(% scope="row" %)Register|1|2|3|4|5|6|7
224 -|=Device|Power LED Green|Power LED Red|Fan LED Green|Fan LED Red|Temperature LED Green|Temperature LED Red|Lock LED
225 -
226 -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.
227 -
228 -Use following script to power LEDs one at a time:
229 -
230 -{{code language="c++"}}
231 -#include <PCA9554.h> // Load the PCA9554 Library
232 -
233 -PCA9554 ioCon1(0x24); // Create an object at this address
234 -
235 -uint8_t mapIO = 0b10000000;
236 -
237 -void shiftL() {
238 - mapIO = (mapIO << 1) | ((mapIO & 0x80) >> 7);
239 -}
240 -
241 -void write() {
242 - Serial.println("writing to PCA9554 device");
243 -
244 - for (int i = 0; i < 8; ++i) {
245 - ioCon1.digitalWrite(i, (mapIO & (1 << i)) ? 0 : 1);
246 - }
247 -}
248 -
249 -void setup()
250 -{
251 - Serial.begin(9600);
252 - Serial.println("Setup");
253 -
254 - ioCon1.portMode(ALLOUTPUT);
255 -}
256 -
257 -void loop()
258 -{
259 - write();
260 - shiftL();
261 -
262 - delay(500);
263 -}
264 -{{/code}}
265 -
266 -
267 267  
268 268  )))
269 269