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Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48
From version 8.2
edited by Kevin Wiki
on 2024/07/05 14:00
Change comment: There is no comment for this version
To version 7.4
edited by Kevin Wiki
on 2024/07/05 10:16
Change comment: There is no comment for this version

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... ... @@ -216,68 +216,13 @@
216 216  * fan LED (red & green)
217 217  * temperature LED (red & green)
218 218  * compute LED (unknown)
219 -* lock switch
220 220  
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)
220 +Each side is driven by each their PCA9554 shift register. The registers represent the following LEDs: (Note that Lock LED is only present for the LEFT side)
222 222  
223 -(% border="1" %)
224 224  |=(% scope="row" %)Register|1|2|3|4|5|6|7
225 225  |=Device|Power LED Green|Power LED Red|Fan LED Green|Fan LED Red|Temperature LED Green|Temperature LED Red|Lock LED
226 226  
227 227  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 -Controlling middle IO strip
269 -
270 -0 = 0000
271 -1 (green) = 0001
272 -2 = 0010
273 -1 + 2 = 0011
274 -3 = 0100
275 -
276 -
277 -There are 4 words, each containing 7 data bits. They do not
278 -
279 -
280 -
281 281  )))
282 282  
283 283