Rev 274 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 274 | Rev 275 | ||
|---|---|---|---|
| Line 148... | Line 148... | ||
| 148 | #ifdef USE_FOLLOWME |
148 | #ifdef USE_FOLLOWME |
| 149 | // AVcc = 5V --> 5V = 1024 counts |
149 | // AVcc = 5V --> 5V = 1024 counts |
| 150 | // the voltage at the voltage divider reference point is 0.8V less that the UBat |
150 | // the voltage at the voltage divider reference point is 0.8V less that the UBat |
| 151 | // because of the silicon diode inbetween. |
151 | // because of the silicon diode inbetween. |
| 152 | // voltage divider R2=10K, R3=1K |
152 | // voltage divider R2=10K, R3=1K |
| 153 | // UAdc4 = R3/(R3+R2)*(UBat-0.8V) = 1k/(1k+10k)*(UBat-0.8V) = (UBat-0.8V)/11 |
153 | // UAdc4 = R3/(R3+R2)*UBat= 1k/(1k+10k)*UBat = UBat/11 |
| - | 154 | // UAdc4 = R3/(R3+R2)*UBat= 3.9k/(3.9k+10k)*UBat = UBat/3.564 |
|
| 154 | UBat = (3 * UBat + (69 * Adc4) / 128 + 8) / 4; |
155 | UBat = (3 * UBat + (69 * Adc4) / 128) / 4; |
| 155 | DebugOut.Analog[8] = UBat; |
156 | DebugOut.Analog[8] = UBat; |
| 156 | #endif |
157 | #endif |
| 157 | ADReady = 0; |
158 | ADReady = 0; |
| 158 | ADC_Enable(); // restart ad conversion sequence |
159 | ADC_Enable(); // restart ad conversion sequence |
| 159 | } |
160 | } |