November 18, 200619 yr When you use some code like this: FLOAT64 freq; execute_calculator_code("(A:ADF STANDBY FREQUENCY:1, KHz)", &freq, NULL, NULL);to read the ADF freq, what are you then doing to get it into text?If the ADF is tuned to say 315.0, what is in the FLOAT64?
November 18, 200619 yr Moderator Patrick, the benefit of using this method to fetch the ADF frequency is that the return is in KHz, and therefore needs no BCD to DEC conversion... ;)Here is a code segment from my Honewell RTU, which features 2 ADF memory slots.fron the Honeywell_RTU.h file, the variables used://////////////////////////////////////////FLOAT64 adf1_frequency = 0;FLOAT64 ADF_MemA = 0;FLOAT64 ADF_MemB = 500; // defaults to 500 KHz???bool AdfFlag = false;int adf1_freq_high_carry = 0;//////////////////////////////////////////from the functions.cpp file:execute_calculator_code("(A:ADF ACTIVE FREQUENCY:1, KHz)",&adf1_frequency,NULL,NULL);if (AdfFlag == false) { ADF_MemA = adf1_frequency; }if (AdfFlag == true) { ADF_MemB = adf1_frequency; }char cString[8] = ""; sprintf(cString, "%07.2f", adf1_frequency); // since the character "0" is ascii code 48, // then subtracting 48 from the character code of // the desired character gives us the numeric equivalent. adf1_freq_high_carry = cString[2] - 48;//////////////////////////////////////////and, in case you're wondering what the devil the adf1_freq_high_carry is used for, here's a snip from the Honeywell_RTU_MouseFunctions.cpp file. This allows my "universal knob" to keep track of the decimal rollover:////////////////////////////////////////// if ( ( pagebutton == 1 && Pg1SelectCurs == 9 && dimbutton == 0 ) || ( pagebutton == 8 && Pg8SelectCurs == 7 && dimbutton == 0 ) ) { if (rtuthousandsknob == 1) { trigger_key_event (KEY_ADF_10_INC,0); if (adf1_freq_high_carry == 9) { trigger_key_event(KEY_ADF_100_INC,0); } rtuthousandsknob = 0; PageTimer = 0; } if (rtuthousandsknob == -1) { trigger_key_event (KEY_ADF_10_DEC,0); if (adf1_freq_high_carry == 0) { trigger_key_event(KEY_ADF_100_DEC,0); } rtuthousandsknob = 0; PageTimer = 0; } } Fr. Bill AOPA Member: 07141481 AARP Member: 3209010556 Avsim Board of Directors | Avsim Forums Moderator
November 18, 200619 yr Paradoxically, I don't mind the BCD stuff. =)But, I can't get at the ADF freq's without the XML vars, so I'm stuck trying to use that method.I'll try this:wstring RadioPage::GetAdf1Active(){ FLOAT64 freq; WCHAR freqStr[8] = {0}; execute_calculator_code("(A:ADF ACTIVE FREQUENCY:1, KHz)", &freq, NULL, NULL); swprintf_s(freqStr, 8, L"%07.2f", freq); return freqStr;}For the COM freq's I'm using this:wstring RadioPage::GetCom1Active(){ lookup_var(&m_com_frequency); lookup_var(&m_com_radio_25_khz_tunable); UINT32 bcd = m_com_frequency.var_value.d; m_Com1Freq[0] = '1'; m_Com1Freq[1] = ((bcd >> 12) & 0xF) + 0x30; m_Com1Freq[2] = ((bcd >> 8) & 0xF) + 0x30; m_Com1Freq[3] = '.'; m_Com1Freq[4] = ((bcd >> 4) & 0xF) + 0x30; m_Com1Freq[5] = ((bcd) & 0xF) + 0x30; if(m_Com1Freq[5] == '2' || m_Com1Freq[5] == '7') { m_Com1Freq[6] = '5'; m_Com1Freq[7] = '0'; // NULL Terminator } else { m_Com1Freq[6] = '0'; // NULL Terminator } m_Com1Freq[7] = '0'; // NULL Terminator wstring wstr = m_Com1Freq; return wstr;}Which is fine. Sometime I'll profile the alternate method and see which is faster.
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