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DeviceDither.c
- Committer:
- Diletant
- Date:
- 2016-06-05
- Revision:
- 167:bedc0a9d559a
- Parent:
- 161:efd949e8d536
- Child:
- 173:7f938afb0447
File content as of revision 167:bedc0a9d559a:
#include "Device.h" extern Device device; void InitDitherDefaultSettings(void){ device.dither.cycle.settings.enabled = 1; device.dither.pulse.settings.rise = 32; device.dither.pulse.settings.fall = 64; device.dither.detector.settings.weight[0] = -1; device.dither.detector.settings.weight[1] = -1; device.dither.detector.settings.weight[2] = -1; device.dither.detector.settings.weight[3] = -1; device.dither.detector.settings.weight[4] = -1; device.dither.detector.settings.weight[5] = -1; device.dither.detector.settings.weight[6] = -1; device.dither.detector.settings.weight[7] = -1; device.dither.detector.settings.weight[8] = 1; device.dither.detector.settings.weight[9] = 1; device.dither.detector.settings.weight[10] = 1; device.dither.detector.settings.weight[11] = 1; device.dither.detector.settings.weight[12] = 1; device.dither.detector.settings.weight[13] = 1; device.dither.detector.settings.weight[14] = 1; device.dither.detector.settings.weight[15] = 1; device.dither.detector.settings.weight[16] = 1; device.dither.detector.settings.weight[17] = 1; device.dither.detector.settings.weight[18] = 1; device.dither.detector.settings.weight[19] = 1; device.dither.detector.settings.weight[20] = 1; device.dither.detector.settings.weight[21] = 1; device.dither.detector.settings.weight[22] = 1; device.dither.detector.settings.weight[23] = 1; device.dither.detector.settings.weight[24] = -1; device.dither.detector.settings.weight[25] = -1; device.dither.detector.settings.weight[26] = -1; device.dither.detector.settings.weight[27] = -1; device.dither.detector.settings.weight[28] = -1; device.dither.detector.settings.weight[29] = -1; device.dither.detector.settings.weight[30] = -1; device.dither.detector.settings.weight[31] = -1; device.dither.detector.settings.offset = 0; } void InitDitherState(void){ device.dither.cycle.state.enabled = device.dither.cycle.settings.enabled; device.dither.pulse.state.rise = device.dither.pulse.settings.rise; device.dither.pulse.state.fall = device.dither.pulse.settings.fall; device.dither.pulse.state.counter = 0; device.dither.cycle.state.pin1 = 0; device.dither.cycle.state.pin2 = 0; } void DeviceStartDither(void){ } void DeviceDitherDoCycle(void){ uint8_t pin1, pin2; if ((device.dither.pulse.state.counter > device.dither.pulse.settings.rise) && (device.dither.pulse.state.counter < device.dither.pulse.settings.fall)){ pin1 = 1; pin2 = 1; } else { pin1 = 0; pin2 = 0; } if (device.measurement.counter < 16){ pin2 = 0; } else { pin1 = 0; } if (!device.dither.cycle.state.enabled) { pin1 = 0; pin2 = 0; } if (pin1 > device.dither.cycle.state.pin1) LPC_GPIO1->FIOCLR = 1<<25; if (pin1 < device.dither.cycle.state.pin1) LPC_GPIO1->FIOSET = 1<<25; if (pin2 > device.dither.cycle.state.pin2) LPC_GPIO1->FIOCLR = 1<<28; if (pin2 < device.dither.cycle.state.pin2) LPC_GPIO1->FIOSET = 1<<28; device.dither.cycle.state.pin1 = pin1; device.dither.cycle.state.pin2 = pin2; } /* f(t) = f0 * cos(w * t) x(t) = x0 * cos(w * t - fi) fi = - arctan(const / (w0^2 - w^2)) */ void DeviceDitherDetectPhase(void) { if (device.measurement.counter == 0) { device.dither.oscillation.state.error = device.dither.detector.state.error; device.dither.detector.state.error = 0; } else { int32_t delta = device.counters.state.delta[device.measurement.counter]; uint8_t position = device.measurement.counter + device.dither.detector.settings.offset; int8_t weight = device.dither.detector.settings.weight[position % device.measurement.length]; device.dither.detector.state.error += delta * weight; } }