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coldatom.cpp
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#include "mbed.h"
#include "cycle_count_delay.h"
#include "coldatom.h"
#include "serial.h"
#include "WINDFREAK_Serial.h"
#include "Misc/macros.h"
#include "settings.h"
#include "Pin_Assignment.h"
#include <cstdint>
#include <cstdio>
#include "Drivers/MAX11300/max11300.h"
#include "Drivers/AD5781/AD5781.h"
#include "BurstSPI.h"
#include "PID/PID.h"
using drivers::max11300::MAX11300;
using drivers_AD::ad5781::AD5781;
using drivers_AD::ad5781::AD5781;
// // Array for saving ADC read values
// constexpr size_t num_pd_samples = 1200;
// uint16_t pd_samples[num_pd_samples];
// clang-format off
COLDATOM::COLDATOM(bool ready) :
/*
** This constructor handles all the pin assignments
1. COM Buses
2. Digital I/O
3. Analog I/O
*/
// Wait for serial to initialize
// pc.set_baud(BAUD);
// serial_initialize();
// MAX11300(MAX11300_SPI, SPI_CS, NC, PE_11);
// AD7195(AD7195_SPI, PE_4);
// Analog Output
AOM_1_FREQ_{MAX11300::PORT16},
AOM_1_ATTE_{MAX11300::PORT17},
AOM_2_FREQ_{MAX11300::PORT14},
AOM_2_ATTE_{MAX11300::PORT15},
AOM_3_FREQ_{MAX11300::PORT18},
AOM_3_ATTE_{MAX11300::PORT19},
C_FIELD_MOD_{MAX11300::PORT1},
// AOM_1_FREQ_ = MAX11300.PORT16;
// AOM_1_ATTE_ = MAX11300.PORT17;
// AOM_2_FREQ_ = MAX11300.PORT14;
// AOM_2_ATTE_ = MAX11300.PORT15;
// AOM_3_FREQ_ = MAX11300.PORT18;
// AOM_3_ATTE_ = MAX11300.PORT19;
// C_FIELD_MOD_ = MAX11300.PORT13;
// u_WAVE_AMP_{MAX11300::PORT1},
// u_WAVE_FREQ_{MAX11300::PORT9},
// u_WAVE_AMP_ = MAX11300.PORT1;
// u_WAVE_FREQ_ = MAX11300.PORT9;
// Analog Input
PD_1_{MAX11300::PORT0},
// PD_1_ = MAX11300.PORT0;
// PD_2_ = MAX11300.PORT0;
// MAX11300
MAX11300_SPI{SPI_MOSI, SPI_MISO, SPI_SCK},
MAX11300{MAX11300_SPI, SPI_CS},
// AD5781
AD5781_SPI{PE_6, PE_5, PE_2},
AD5781{AD5781_SPI, PE_4} {}
// // PID
// PID
// clang-format on
void COLDATOM::initialize()
{
/*
1. reset() - sets everything to initial values
2. precomp() - Precompute ramps requried for experiment
*/
// printf("SystemCoreClock is %lu MHz\n\r", SystemCoreClock/1000000);
// printf("\n\r");
// printf("Initializing...\n");
// MAX11300.init();
WF_init();
reset();
precomp();
AD5781.dac_update(to_AD5781dac(-0.120736));
PIDController_Init();
// printf("Initialized\n\r");
return;
}
void COLDATOM::reset()
{
/*
1. RESET to MOT values
*/
// printf("RESET...\n\r");
//Initial Values
COOLING_TTL = 0;
REPUMP_TTL = 0;
COIL_TTL = 1;
MAKO_TTL = 0;
ALVIUM_TTL = 0;
TRAP_AOM_SWITCH = 0;
u_WAVE_TTL = 0;
//TRAP AOM
MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(MOT_TRAP_FREQ));
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(MOT_TRAP_ATTE));
//LOCK AOM
MAX11300.single_ended_dac_write(AOM_2_FREQ_, to_dac(MOT_LOCK_FREQ));
MAX11300.single_ended_dac_write(AOM_2_ATTE_, to_dac(MOT_LOCK_ATTE));
//REPUMP AOM
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(MOT_REPUMP_FREQ));
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(MOT_REPUMP_ATTE));
// C_FIELD_MOD
MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(MOT_C_FIELD));
// u_WAVE
// MAX11300.single_ended_dac_write(u_WAVE_AMP_, to_dac_negative(u_WAVE_AMP_CLOSE));
// MAX11300.single_ended_dac_write(u_WAVE_FREQ_, to_dac_negative(0));
// WF_TTL = 1;
WF_MUTE(0);
// WF_COMMAND_write('W', u_WAVE_pi_power);
return;
}
void COLDATOM::precomp()
{
/*
1. Precompute ramps required for experiment
*/
//////////////////////////////////////////////
// Define individual ramp specifics
MAX11300::Ramp PGC_Ramps[] = {
{AOM_1_FREQ_, to_dac(MOT_TRAP_FREQ), to_dac(PGC_TRAP_FREQ)},
{AOM_1_ATTE_, to_dac(MOT_TRAP_ATTE), to_dac(PGC_TRAP_ATTE)}
};
// Define global ramp specifics
PGC_Ramp.configured = 0;
PGC_Ramp.num_ramps = ARRAYSIZE(PGC_Ramps);
PGC_Ramp.num_steps = 10; // with the 10 + 40 = 50us delay, this takes 1 ms total
PGC_Ramp.step_time_us = 1; // remember 40us delay in SPI single_dac_write() funtion
// Prepare ramp function
MAX11300.prepare_ramps(&PGC_Ramp, PGC_Ramps);
//////////////////////////////////////////////
// // Define individual ramp specifics
// MAX11300::Ramp C_FIELD_Ramps[] = {
// {C_FIELD_MOD_, to_dac(MOT_C_FIELD_), to_dac(DETECT_C_FIELD_)}
// };
// // Define global ramp specifics
// PGC_Ramp.configured = 0;
// PGC_Ramp.num_ramps = ARRAYSIZE(C_FIELD_Ramps);
// PGC_Ramp.num_steps = 32;
// PGC_Ramp.step_time_us = 156;
// // Prepare ramp function
// MAX11300.prepare_ramps(&C_FIELD_Ramp, C_FIELD_Ramps);
// //////////////////////////////////////////////
return;
}
void COLDATOM::precomp_optimise(float detuning_, float atte_)
{
/*
1. Precompute ramps required for experiment
*/
//////////////////////////////////////////////
// Define individual ramp specifics
MAX11300::Ramp OPT_Ramps[] = {
{AOM_1_FREQ_, to_dac(MOT_TRAP_FREQ), to_dac(detuning_)},
{AOM_1_ATTE_, to_dac(MOT_TRAP_ATTE), to_dac(atte_)}
};
// Define global ramp specifics
OPT_Ramp.configured = 0;
OPT_Ramp.num_ramps = ARRAYSIZE(OPT_Ramps);
OPT_Ramp.num_steps = 33;
OPT_Ramp.step_time_us = 15;
// Prepare ramp function
MAX11300.prepare_optimise_ramps(&OPT_Ramp, OPT_Ramps);
//////////////////////////////////////////////
return;
}
void COLDATOM::PGC()
{
/*
1. Turn off the MOT quadrupole coils
2. Wait for the residual B field to reach zero
3. Simeltaneously RAMP cooling intensity down AND cooling detuning furhter to red
4. Turn lasers off with AOM and shutters
*/
//////////////////////////////////////////////////////////
// JUST AOMS
// Turn lasers off
TRAP_AOM_SWITCH = 1;
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0)),
// MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(0)),
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0)),
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(OFF_REPUMP_FREQ));
// Turn the MOT coil off and wait for it to die down
COIL_TTL = 0;
cycle_delay_ms(10);
TRAP_AOM_SWITCH = 0;
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(MOT_TRAP_ATTE)),
// MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(MOT_TRAP_FREQ)),
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(MOT_REPUMP_ATTE)),
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(MOT_REPUMP_FREQ));
MAX11300.run_ramps(&PGC_Ramp);
MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(DETECT_C_FIELD));
cycle_delay_ms(5);
// cycle_delay_ms(10);
TRAP_AOM_SWITCH = 1;
MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(DETECT_TRAP_FREQ));
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(DETECT_TRAP_ATTE));
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0));
// MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(0));
cycle_delay_us(REPUMP_PULSE_TIME);
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0));
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(OFF_REPUMP_FREQ));
// MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(MOT_C_FIELD));
// cycle_delay_ms(5);
// MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(DETECT_C_FIELD));
// cycle_delay_ms(5);
//////////////////////////////////////////////////////////
return;
}
void COLDATOM::PGC_OPT()
{
/*
1. Turn off the MOT quadrupole coils
2. Wait for the residual B field to reach zero
3. Simeltaneously RAMP cooling intensity down AND cooling detuning furhter to red
4. Turn lasers off with AOM and shutters
*/
// Turn lasers off whilst we wait for MOT coil to die down
cooling_light(0, MOT_TRAP_FREQ, 0);
repump_light(0, MOT_REPUMP_FREQ, 0);
// Turn the MOT coil off and wait for it to die down
COIL_TTL = 0;
cycle_delay_ms(14);
// Turn the lasers back on and run PGC
cooling_light(1, MOT_TRAP_FREQ, 0.95),
repump_light(1, MOT_REPUMP_FREQ, 1);
MAX11300.run_ramps(&OPT_Ramp);
// Turn lasers off and release the cloud
cooling_light(0, PGC_TRAP_FREQ, 0);
cycle_delay_us(100);
repump_light(0, PGC_REPUMP_FREQ, 0);
return;
}
void COLDATOM::MOT_Temp()
{
/*
1. Perform the PGC cooling
2. Image the MOT
3. Perform background image, turn coils off, run sequence again
*/
////////////////////////////////////////
// Define the dark times to loop through
// uint16_t dark_T[] = {8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38};
// uint16_t dark_T[] = {30,30,30,30,30,30,30,1,2,3,4,5,6,8,10,12,14,16,18,20,22,24,26,28,30};
// uint16_t dark_T[] = {30,30,30,30,10,10,10,10,10,10};
uint16_t dark_T[] = {5};
// uint16_t dark_T[] = {5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6,5,6};
for (uint16_t i=0; i < ARRAYSIZE(dark_T); i++)
{
for (uint16_t j=0; j < 10; j++)
{
PGC();
cycle_delay_ms(dark_T[i]);
// Turn on cooling beams
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(MOT_TRAP_ATTE));
// cycle_delay_us(AOM_DELAY_OPEN);
// cycle_delay_ms(2);
MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(DETECT_TRAP_FREQ));
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(DETECT_TRAP_ATTE));
cycle_delay_us(50);
// Image the MOT
MAKO_TTL = 1;
cycle_delay_us(1000);
MAKO_TTL = 0;
// Return to MOT stage
cycle_delay_ms(100);
reset();
cycle_delay_ms(500); //steady state atom number reached
}
}
////////////////////////////////////////
return;
}
void COLDATOM::MOT_Load()
{
/*
1. Load the MOT several times
*/
for (uint16_t i=0; i < 5; i++)
{
MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(10));
cycle_delay_ms(8000);
MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(MOT_TRAP_FREQ));
cycle_delay_ms(8000);
// MAX11300.max_speed_adc_read(PD_1_, PD_ARRAY, ADC_SAMPLES);
}
return;
}
void COLDATOM::drop_test()
{
/*
1. Perform the PGC cooling
2. Drop the cloud for some time T
*/
uint16_t DETECT_PULSE_TIME = 1000;
//////////////////////////////////////////
// Post-MOT cooling
PGC();
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0));
// cycle_delay_us(500);
// MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0));
// MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(0));
// DROP
// MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(DETECT_TRAP_FREQ));
MAX11300.single_ended_dac_write(u_WAVE_AMP_, to_dac_negative(u_WAVE_AMP_OPEN));
cycle_delay_ms(200);
MAX11300.single_ended_dac_write(u_WAVE_AMP_, to_dac_negative(u_WAVE_AMP_CLOSE));
// Pulse 1
MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(DETECT_TRAP_FREQ));
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(DETECT_TRAP_ATTE));
cycle_delay_us(DETECT_PULSE_TIME);
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0));
// Pulse 2
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(DETECT_REPUMP_FREQ));
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(DETECT_REPUMP_ATTE));
cycle_delay_us(REPUMP_PULSE_TIME);
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0));
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(0));
// Pulse 3
// MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(0.832));
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(DETECT_TRAP_ATTE));
cycle_delay_ms(DETECT_PULSE_TIME);
MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0));
// Pulse 4 (F3 and F4 light together for the final pulse)
// MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(DETECT_REPUMP_FREQ));
// MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(DETECT_REPUMP_ATTE));
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(DETECT_TRAP_ATTE));
cycle_delay_ms(100);
// RESET
reset();
cycle_delay_ms(4000); //steady state atom number reached
return;
}
void COLDATOM::diagnostic()
{
// // Shutter ON/OFF
// int i = 30;
// while(i--)
// {
// cycle_delay_ms(500);
// // COOLING_TTL = 1;
// // REPUMP_TTL = 1;
// TRAP_AOM_SWITCH = 1;
// cycle_delay_ms(500);
// // COOLING_TTL = 0;
// // REPUMP_TTL = 0;
// TRAP_AOM_SWITCH = 0;
// }
// // AOM ON/OFF
// int i = 50;
// int pulse = 3000;
// while(i--)
// {
// // cycle_delay_ms(pulse);
// // MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0));
// // MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(OFF_REPUMP_FREQ));
// // cycle_delay_ms(pulse);
// // MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(MOT_REPUMP_ATTE));
// // MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(MOT_REPUMP_FREQ));
// cycle_delay_ms(pulse);
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0));
// MAX11300.single_ended_dac_write(AOM_2_ATTE_, to_dac(0));
// MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0));
// // MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(OFF_TRAP_FREQ));
// cycle_delay_ms(pulse);
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(MOT_TRAP_ATTE));
// MAX11300.single_ended_dac_write(AOM_2_ATTE_, to_dac(MOT_LOCK_ATTE));
// MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(MOT_REPUMP_ATTE));
// // MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(MOT_TRAP_FREQ));
// }
// reset();
// // u_WAVE
// int i = 20;
// MAX11300.single_ended_dac_write(u_WAVE_AMP_, to_dac_negative(u_WAVE_AMP_OPEN));
// while(i--)
// {
// cycle_delay_ms(20);
// u_WAVE_TTL = 1;
// cycle_delay_us(1);
// u_WAVE_TTL = 0;
// // MAX11300.single_ended_dac_write(u_WAVE_FREQ_, to_dac_negative(-1));
// // cycle_delay_ms(4000);
// // MAX11300.single_ended_dac_write(u_WAVE_AMP_, to_dac_negative(u_WAVE_AMP_CLOSE));
// // u_WAVE_TTL = 0;
// // MAX11300.single_ended_dac_write(u_WAVE_FREQ_, to_dac_negative(1));
// }
// // Shutter ON/OFF
// cycle_delay_ms(500);
// cooling_light(1, DETECT_TRAP_FREQ, DETECT_TRAP_ATTE);
// cycle_delay_ms(500);
// cooling_light(0, DETECT_TRAP_FREQ, DETECT_TRAP_ATTE);
// // Shutter DELAY optimise
// int i = 150;
// while(i--)
// {
// COOLING_TTL = 1;
// cycle_delay_us(MECH_DELAY_CLOSE);
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(0.95));
// cycle_delay_ms(1);
// cycle_delay_ms(100);
// COOLING_TTL = 0;
// cycle_delay_us(MECH_DELAY_OPEN);
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(1.3));
// cycle_delay_ms(1);
// cycle_delay_ms(100);
// }
// // MAKO ON/OFF
// cycle_delay_ms(10);
// MAKO_TTL = 1;
// cycle_delay_us(1000);
// MAKO_TTL = 0;
// // ALVIUM ON/OFF
// cycle_delay_ms(100);
// ALVIUM_TTL = 1;
// cycle_delay_us(1000);
// ALVIUM_TTL = 0;
// // CFIELD ON/OFF
// int i = 10;
// while(i--)
// {
// cycle_delay_ms(4000);
// // MAX11300.run_ramps(&C_FIELD_Ramp);
// MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(MOT_C_FIELD));
// cycle_delay_ms(4000);
// MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(DETECT_C_FIELD));
// }
// reset();
// // AOM ON/OFF
// int i = 10000;
// while(i--)
// {
// PGC();
// cooling_light(1, MOT_TRAP_FREQ, MOT_TRAP_ATTE);
// cycle_delay_us(1000);
// cooling_light(0, MOT_TRAP_FREQ, MOT_TRAP_ATTE);
// cycle_delay_ms(100);
// }
// reset();
// //////////////////////////////////////////////
// float VARIABLE_array[] = {0,
// 0.1,
// 0.2,
// 0.3,
// 0.4,
// 0.5,
// 0.6,
// 0.7,
// 0.8,
// 0.9,
// 1};
// for (uint16_t i=0; i < ARRAYSIZE(VARIABLE_array); i++){
// float VARIABLE = VARIABLE_array[i];
// MAX11300.single_ended_dac_write(AOM_1_ATTE_, to_dac(VARIABLE));
// COIL_TTL = !COIL_TTL;
// cycle_delay_ms(5000);
// }
// reset();
// // Test the BURST SPI, send 1000 SPI packets as fast as possible
// SPI_TEST.setFormat();
// // SPI_TEST.frequency(20000000);
// for (int i = 0; i<1000; i++)
// {
// CS = 0;
// SPI_TEST.fastWrite(0x00);
// SPI_TEST.clearRX();
// SPI_TEST.fastWrite(0x00);
// SPI_TEST.clearRX();
// SPI_TEST.fastWrite(0x00);
// SPI_TEST.clearRX();
// CS = 1;
// }
// // Test the BAUDRATE UART speeds
// printf("DATA\n\r");
// printf("PCLK1 %lu \n\r", HAL_RCC_GetPCLK1Freq());
// uint16_t brr_value = USART3->BRR;
// printf("BRR value %d \n\r", brr_value);
// // Timer code for timing things
// Timer t;
// using namespace std::chrono;
// t.start();
// t.stop();
// printf("The time taken was %llu milliseconds\n\r", duration_cast<milliseconds>(t.elapsed_time()).count());
// // Read MAX11300 device id
// for (uint16_t i=0; i < ADC_SAMPLES; i++){
// uint16_t read_value_0 = MAX11300.read_register(interrupt_flag);
// uint16_t read_value_1 = MAX11300.read_register(interrupt_mask);
// // uint16_t read_value_2 = MAX11300.read_register(adc_status_15_to_0);
// // uint16_t read_value_3 = MAX11300.read_register(adc_status_19_to_16);
// uint16_t read_value_4 = MAX11300.read_register(adc_data_port_00);
// printf("%d, %X, %d,\n\r", read_value_0, read_value_1, read_value_4);
// }
// float VARIABLE_array[] = {0.832, 1.066, 1.299, 1.533, 1.767, 2.000, 2.234, 2.468, 2.701, 2.935, 3.169};
// for (uint16_t i=0; i < ARRAYSIZE(VARIABLE_array); i++){
// COIL_TTL = !COIL_TTL;
// MAX11300.single_ended_dac_write(AOM_1_FREQ_, to_dac(VARIABLE_array[i]));
// cycle_delay_ms(10000);
// }
// reset();
// printf("Finished\n\r");
// // Windfreak tests
// int i = 10;
// while(i--){
// WF_MUTE(0);
// // WF_COMMAND_write('f', 9192.731770);
// cycle_delay_ms(500);
// WF_MUTE(1);
// // WF_COMMAND_write('f', 9192.531770);
// cycle_delay_ms(500);
// }
WF_query();
return;
}
void COLDATOM::interrogate()
{
/*
1. Perform microwave interrogation
*/
WF_MUTE(1); //0
cycle_delay_ms(DROP_TIME);
WF_MUTE(0); //1
return;
}
void COLDATOM::detection()
{
/*
1. Pulse 1: Cooling light pulse for N_4
2. Pulse 2: Repump light to return to F=4
3. Pulse 3: Cooling light pulse for N_4 + N_3
4. Pulse 4: Background pulse
*/
// Pulse 1
TRAP_AOM_SWITCH = 0;
cycle_delay_us(AOM_DELAY);
MAX11300.max_speed_adc_read(PD_1_, PD_ARRAY, ADC_SAMPLES);
TRAP_AOM_SWITCH = 1;
// Pulse 2
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(DETECT_REPUMP_FREQ));
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(DETECT_REPUMP_ATTE));
cycle_delay_us(REPUMP_PULSE_TIME);
MAX11300.single_ended_dac_write(AOM_3_ATTE_, to_dac(0));
MAX11300.single_ended_dac_write(AOM_3_FREQ_, to_dac(OFF_REPUMP_FREQ));
// Pulse 3
TRAP_AOM_SWITCH = 0;
cycle_delay_us(AOM_DELAY);
MAX11300.max_speed_adc_read(PD_1_, &PD_ARRAY[ADC_SAMPLES], ADC_SAMPLES);
// Background Pulse
cycle_delay_us(BG_DELAY);
// Pulse 1
TRAP_AOM_SWITCH = 0;
cycle_delay_us(AOM_DELAY);
MAX11300.max_speed_adc_read(PD_1_, &PD_ARRAY[2*ADC_SAMPLES], ADC_SAMPLES);
TRAP_AOM_SWITCH = 0;
MAX11300.single_ended_dac_write(C_FIELD_MOD_, to_dac(MOT_C_FIELD));
return;
}
double COLDATOM::fraction(bool print_data)
{
/*
1. Determine the area under fluoresence plots
2. Calculate the transition probability
*/
uint32_t N_4 = 0;
uint32_t N_34 = 0;
uint32_t BG_4 = 0;
// uint32_t BG_34 = 0;
uint16_t i = 0;
for (; i < ADC_SAMPLES; i++)
{
N_4 += PD_ARRAY[i];
}
for (; i < 2*ADC_SAMPLES; i++)
{
N_34 += PD_ARRAY[i];
}
for (; i < 3*ADC_SAMPLES; i++)
{
BG_4 += PD_ARRAY[i];
}
// for (; i < 4*ADC_SAMPLES; i++)
// {
// BG_34 += PD_ARRAY[i];
// }
// double fraction_ = (static_cast<double>(N_4) - static_cast<double>(BG_4)) / (static_cast<double>(N_34) - static_cast<double>(BG_34));
double fraction_ = (static_cast<double>(N_4) - static_cast<double>(BG_4)) / (static_cast<double>(N_34) - static_cast<double>(BG_4));
pd_fraction_ = fraction_;
// uint32_t atom_number_ = N_34 - BG_34;
uint32_t atom_number_ = N_34 - BG_4;
if (print_data == 1)
{
printf("Atom Number: (%lu,)\n\r", atom_number_);
printf("Detection: (%lu,%lu,%lu,)\n\r", N_4, N_34, BG_4);
printf("Fraction: (%.5f,)\n\r", pd_fraction_);
}
return pd_fraction_;
}
void COLDATOM::experimental()
{
/*
1. Run one full experimental cycle
*/
// Timer t;
// using namespace std::chrono;
// t.start();
PGC();
// interrogate();
cycle_delay_ms(5);
detection();
fraction(1);
serial_send_array(PD_ARRAY, PD_ARRAY_SIZE);
printf("SHOT\n\r");
// cycle_delay_ms(100); // use this cycle delay if you want to quick load times
reset();
cycle_delay_ms(LOAD_TIME);
// t.stop();
// printf("The time taken was %llu milliseconds\n\r", duration_cast<microseconds>(t.elapsed_time()).count());
// printf ("%.10f\n\r", FRACTION_ARRAY[0]);
return;
}
double COLDATOM::clock_sequence()
{
/*
* Run two sequences either side of the peak
* The dither amplitude is set in settings.h
* returns the difference N_high - N_low
*/
double N;
double N0 = 0;
double N_diff = 0;
double dither[] = {dither_low, dither_high};
for (int i = 0; i < 2; i++)
{
WF_COMMAND_write('f', dither[i]);
PGC();
interrogate();
detection();
N = fraction(0);
// serial_send_array(PD_ARRAY, PD_ARRAY_SIZE);
// printf("SHOT\n\r");
reset();
cycle_delay_ms(LOAD_TIME);
N_diff = N - N0;
N0 = N;
}
// printf("N_high - N_low = %.6f\n\r", N_diff);
return N_diff;
}
void COLDATOM::clock_operation()
{
// Timer t;
// using namespace std::chrono;
reset();
int i = 10;
while(1)
{
// t.start();
double N_diff = clock_sequence();
// t.stop();
// printf("The time taken was %llu milliseconds\n\r", duration_cast<milliseconds>(t.elapsed_time()).count());
double output = PIDController_Update(N_diff);
AD5781.dac_update(to_AD5781dac(output));
// printf("N_diff = %.8f, Voltage = %.8f\n\r", N_diff, output);
printf("(%.5f)\n\r", output);
printf("SHOT\n\r");
cycle_delay_us(100);
// was there a stop command? if yes then break
if (serial_stop_command() == 1){
break;
}
}
WF_COMMAND_write('W', 0);
AD5781.dac_update(to_AD5781dac(-0.120736));
}
void COLDATOM::rabi()
{
/*
1. Perform a Rabi measurement
*/
// Sweep using the serial commands
double f0 = 9192.631770;
double SWEEP_SIZE = 0.001;
uint16_t N_steps = 300;
// WF_build_frequency_sweep(f0, SWEEP_SIZE, N_steps);
double FREQ0 = f0 - (SWEEP_SIZE/2);
double SWEEP_STEP = SWEEP_SIZE/N_steps;
uint16_t disregard = 10;
double FREQ_ARRAY[N_steps+disregard];
for (uint16_t i = 0; i < N_steps+disregard; i++){
if (i < disregard){
FREQ_ARRAY[i] = FREQ0;
// printf("%.7f\n\r", FREQ_ARRAY[i]);
// printf("disregard\n\r");
}
else{
FREQ_ARRAY[i] = FREQ0 + (SWEEP_STEP*(i-10));
// printf("%.7f\n\r", FREQ_ARRAY[i]);
// printf("good\n\r");
}
}
// // Sweep using the NEL 10 MHz reference
// double f0 = -0.120736;
// double SWEEP_SIZE = 5;
// uint16_t N_steps = 200;
// double FREQ0 = f0 - (SWEEP_SIZE/2);
// double SWEEP_STEP = SWEEP_SIZE/N_steps;
// uint16_t disregard = 10;
// double FREQ_ARRAY[N_steps+disregard];
// for (uint16_t i = 0; i < N_steps+disregard; i++){
// if (i < disregard){
// FREQ_ARRAY[i] = FREQ0;
// // printf("%.7f\n\r", FREQ_ARRAY[i]);
// // printf("disregard\n\r");
// }
// else{
// FREQ_ARRAY[i] = FREQ0 + (SWEEP_STEP*(i-10));
// // printf("%.7f\n\r", FREQ_ARRAY[i]);
// // printf("good\n\r");
// }
// }
WF_COMMAND_write('W', u_WAVE_pi_power);
// Run the experimental cycle
for (int i = 0; i < N_steps+disregard; i++){
// Sweep with serial
WF_COMMAND_write('f', FREQ_ARRAY[i]);
// Sweep with 10 MHz
// AD5781.dac_update(to_AD5781dac(FREQ_ARRAY[i]));
// run the experimental cycle
PGC();
interrogate();
detection();
fraction(1);
serial_send_array(PD_ARRAY, PD_ARRAY_SIZE);
printf("SHOT\n\r");
// cycle_delay_ms(50); // use this cycle delay if you want to quick load times
reset();
cycle_delay_ms(LOAD_TIME);
}
serial_send_array_doubles(FREQ_ARRAY, N_steps+disregard);
printf("RABI\n\r");
WF_COMMAND_write('W', 0);
return;
}
void COLDATOM::rabi_flopping()
{
/*
1. Perform Rabi flopping
*/
AD5781.dac_update(to_AD5781dac(-0.120736));
WF_COMMAND_write('f', f0);
// Sweep using the serial commands
double p0 = -40;
double pf = 15;
double SWEEP_STEP = 0.1;
pf = pf + SWEEP_STEP; // needs to be whatever you want final to be + an extra SWEEP_STEP
uint16_t N_steps = (pf - p0)/SWEEP_STEP;
uint16_t disregard = 10;
double POWER_ARRAY[N_steps+disregard];
for (uint16_t i = 0; i < N_steps+disregard; i++){
if (i < disregard){
POWER_ARRAY[i] = p0;
// printf("%.7f\n\r", POWER_ARRAY[i]);
// printf("disregard\n\r");
}
else{
POWER_ARRAY[i] = p0 + (SWEEP_STEP*(i-10));
// printf("%.7f\n\r", POWER_ARRAY[i]);
// printf("good\n\r");
}
}
// Run the experimental cycle
for (int i = 0; i < N_steps+disregard; i++){
// Sweep with serial
WF_COMMAND_write('W', POWER_ARRAY[i]);
// run the experimental cycle
PGC();
interrogate();
detection();
fraction(1);
serial_send_array(PD_ARRAY, PD_ARRAY_SIZE);
printf("SHOT\n\r");
// cycle_delay_ms(50); // use this cycle delay if you want to quick load times
reset();
cycle_delay_ms(LOAD_TIME);
}
serial_send_array_doubles(POWER_ARRAY, N_steps+disregard);
printf("RABI\n\r");