nqrduck/ATM
1
0
Fork 0
mirror of https://github.com/nqrduck/ATM.git synced 2024-11-26 20:12:32 +00:00
Code Issues Projects Releases Packages Wiki Activity

added description again, removed comments

Browse source
This commit is contained in:
Julia Pfitzer 2022-03-13 18:48:04 +01:00 committed by GitHub
parent cc3c3d3fd9
commit 60aa41c2f2
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 24 additions and 26 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
lib/ADF4351/ADF4351.cpp
View file

@ -1,3 +1,27 @@
/*!
The ADF4351 chip is a wideband freqency synthesizer integrated circuit that can generate frequencies
from 35 MHz to 4.4 GHz. It incorporates a PLL (Fraction-N and Integer-N modes) and VCO, along with
prescalers, dividers and multipiers. The users add a PLL loop filter and reference frequency to
create a frequency generator with a very wide range, that is tuneable in settable frequency steps.
The ADF4351 chip provides an I2C interface for setting the device registers that control the
frequency and output levels, along with several IO pins for gathering chip status and
enabling/disabling output and power modes.
The ADF4351 library provides an Arduino API for accessing the features of the ADF chip.
The basic PLL equations for the ADF4351 are:
\f$ RF_{out} = f_{PFD} \times (INT +(\frac{FRAC}{MOD})) \f$
where:
\f$ f_{PFD} = REF_{IN} \times \left[ \frac{(1 + D)}{( R \times (1 + T))} \right] \f$
\f$ D = \textrm{RD2refdouble, ref doubler flag}\f$
\f$ R = \textrm{RCounter, ref divider}\f$
\f$ T = \textrm{RD1Rdiv2, ref divide by 2 flag}\f$
This library uses the BigNumber library (included) from Nick Gammon
Modified by J. Pfitzer from David Fannin (https://github.com/dfannin/adf4351), KK6DF for usage with an ESP32 board
MIT License
*/
#include "ADF4351.h" #include "ADF4351.h"
#define ADF_FREQ_MAX 4294967295UL ///< Maximum Generated Frequency = value of MAX Unsigned Long #define ADF_FREQ_MAX 4294967295UL ///< Maximum Generated Frequency = value of MAX Unsigned Long
@ -277,32 +301,6 @@ int ADF4351::setrf(uint32_t f)
// write data into register // write data into register
void ADF4351::WriteRegister(uint32_t regData){ void ADF4351::WriteRegister(uint32_t regData){
/*digitalWrite(_le, LOW);
_regData = regData;
for(int i=0; i<32; i++)
{
if(((_regData<<i)&0x80000000)==0x80000000)
{
digitalWrite(_data,1);
}
else
{
digitalWrite(_data,0) ;
}
digitalWrite(_sclk, HIGH);
delay(1);
digitalWrite(_sclk, LOW);
}
// load data into register
digitalWrite(_le, HIGH);
delay(1);
digitalWrite(_le, LOW);*/
byte txbyte ; byte txbyte ;
digitalWrite(_le, LOW) ; digitalWrite(_le, LOW) ;