private void buttonVDDOn_Click(object sender, EventArgs e) { float vdd = 0; float vpp = 0; labelGood.Visible = false; labelVDDShort.Visible = false; labelVDDLow.Visible = false; labelReadVDD.Text = ""; // set VDD with a low threshold float voltage = (float)numericUpDown1.Value; if (Pk2.SetVDDVoltage(voltage, 0.45F)) { // turn on VDD Pk2.ForcePICkitPowered(); if (Pk2.VddOn()) { // check status first for shorts if (Pk2.PowerStatus() != KONST.PICkit2PWR.vdd_on) { //short! labelVDDShort.Visible = true; labelReadVDD.Text = "Short!"; } else {// status OK, read VDD voltage if (Pk2.ReadPICkitVoltages(ref vdd, ref vpp)) { labelReadVDD.Text = string.Format("{0:0.0} V", vdd); float expectedVDD = (float)numericUpDown1.Value; if (expectedVDD > 4.6F) { expectedVDD = 4.6F; // There is a typical drop for VDD > 4.6V // don't count that } if ((expectedVDD - vdd) > 0.2F) { labelVDDLow.Visible = true; } else { labelGood.Visible = true; } } } } } }
private void buttonCalibrate_Click(object sender, EventArgs e) { float Vdd = 0, Vpp = 0; float measuredVdd = 0; bool calSucceed = true; try { measuredVdd = float.Parse(textBoxVDD.Text); } catch { MessageBox.Show("Invalid 'volts measured' value."); return; } // Cal the ADC results Pk2.ReadPICkitVoltages(ref Vdd, ref Vpp); measuredVdd /= Vdd; //ratio if (measuredVdd > 1.25F) { measuredVdd = 1.25F; calSucceed = false; } if (measuredVdd < 0.75F) { measuredVdd = 0.75F; calSucceed = false; } float calFactor = 256F * measuredVdd; // 512 is 1:1 calibration factor Pk2.SetVoltageCals((ushort)calFactor, 0x00, 0x80); // leave Vdd cals unchanged for now. // Now that we have an accurate ADC reading, we can self-cal the VDD setpoints. // Vdd Offset = (3 - (4*V3)/V4)*CCP4 // Vdd CalFactor = 1/(V4 - V3) * 128. // where V3 = actual voltage at SetVDDVoltage(3.0) // V4 = actual voltage at SetVDDVoltage(4.0) // CCP4 = CalculateVddCPP(4.0F) >> 6 float offset = 0; float calCCP = 0; float Vdd3v = 0; Pk2.SetVDDVoltage(3.0F, 2.00F); Thread.Sleep(150); Pk2.ReadPICkitVoltages(ref Vdd, ref Vpp); Vdd3v = Vdd; Pk2.SetVDDVoltage(4.0F, 2.70F); Thread.Sleep(150); Pk2.ReadPICkitVoltages(ref Vdd, ref Vpp); offset = (3 - (4 * Vdd3v) / Vdd) * (Pk2.CalculateVddCPP(4.0F) >> 6); if (offset > 127F) { offset = 127F; calSucceed = false; } if (offset < -128F) { offset = -128F; calSucceed = false; } calCCP = (1 / (Vdd - Vdd3v)) * 128; if (calCCP > 173) // 135% { calCCP = 173; calSucceed = false; } if (calCCP < 83) // 65% { calCCP = 83; calSucceed = false; } if (calSucceed) { labelGoodCal.Visible = true; labelBadCal.Visible = false; Pk2.SetVoltageCals((ushort)calFactor, (byte)offset, (byte)(calCCP + 0.5)); } else { labelGoodCal.Visible = false; labelBadCal.Visible = true; Pk2.SetVoltageCals(0x0100, 0x00, 0x80); // leave uncal'd } buttonCalibrate.Enabled = false; Pk2.VddOff(); }
private void buttonTestVPP_Click(object sender, EventArgs e) { float vdd = 0; float vpp = 0; labelVPPLow.Visible = false; labelVPPMCLR.Visible = false; labelVPPMCLROff.Visible = false; labelVPPPass.Visible = false; labelVPPShort.Visible = false; labelVPPVDDShort.Visible = false; labelReadVPP.Text = ""; Thread.Sleep(250); // sleep a bit to let VDD bleed down. // check for a powered target first if (Pk2.CheckTargetPower(ref vdd, ref vpp) == KONST.PICkit2PWR.selfpowered) { Pk2.VddOff(); } else { Pk2.SetVDDVoltage((float)numericUpDown1.Value, 0.85F); Pk2.VddOn(); } // Set VPP voltage float expectedVPP; if (Pk2.DevFile.Families[Pk2.GetActiveFamily()].Vpp > 1) { expectedVPP = Pk2.DevFile.Families[Pk2.GetActiveFamily()].Vpp; } else { expectedVPP = (float)numericUpDown1.Value; } Pk2.SetVppVoltage(expectedVPP, 0.50F); byte[] vppscript = new byte[8]; vppscript[0] = KONST._VPP_OFF; vppscript[1] = KONST._VPP_PWM_ON; vppscript[2] = KONST._DELAY_LONG; vppscript[3] = 30; vppscript[4] = KONST._MCLR_GND_OFF; vppscript[5] = KONST._VPP_ON; vppscript[6] = KONST._DELAY_LONG; vppscript[7] = 20; Pk2.SendScript(vppscript); // check status first for shorts KONST.PICkit2PWR status = Pk2.PowerStatus(); if ((status == KONST.PICkit2PWR.vdderror) || (status == Constants.PICkit2PWR.vddvpperrors)) { //VDD short! labelVPPVDDShort.Visible = true; } else if (status == KONST.PICkit2PWR.vpperror) {//VPP short labelVPPShort.Visible = true; labelReadVPP.Text = "Short!"; } else if (status != Constants.PICkit2PWR.no_response) { // status OK, read VPP voltage if (Pk2.ReadPICkitVoltages(ref vdd, ref vpp)) { labelReadVPP.Text = string.Format("{0:0.0} V", vpp); if ((expectedVPP - vpp) > 0.3F) { labelVPPLow.Visible = true; } else { labelVPPPass.Visible = true; } } } }