Changes for page Front I/O
Last modified by Kevin Wiki on 2024/07/07 22:48
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7.4
edited by Kevin Wiki
on 2024/07/05 10:16
on 2024/07/05 10:16
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7.5
edited by Kevin Wiki
on 2024/07/05 10:29
on 2024/07/05 10:29
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... ... @@ -216,13 +216,55 @@ 216 216 * fan LED (red & green) 217 217 * temperature LED (red & green) 218 218 * compute LED (unknown) 219 +* lock switch 219 219 220 -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)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) 221 221 222 222 |=(% scope="row" %)Register|1|2|3|4|5|6|7 223 223 |=Device|Power LED Green|Power LED Red|Fan LED Green|Fan LED Red|Temperature LED Green|Temperature LED Red|Lock LED 224 224 225 225 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 + 226 226 ))) 227 227 228 228