added dac

_device_main.py

@@ -27,10 +27,13 @@ INITIAL_CURRENT_2 = 35 # 64.0879 max # Set initial current for Laser 2, in mA
 AD9833_FREQ_DEFAULT_KHZ = 125.0
 AD9833_MCLK_DEFAULT_MHZ = 20.0
 DS1809_MAX_STEP = 63
-DS1809_DEFAULT_STEP = 0
+DS1809_DEFAULT_STEP = 3
 DS1809_INIT_HOME_PULSES = 64
 DS1809_INIT_PULSE_MS = 2
 DS1809_INIT_STARTUP_DELAY_S = 0.35
+STM32_DAC_VREF = 2.5
+STM32_DAC_MAX_CODE = 4095
+PA4_DAC_DEFAULT_VOLT = 0.0
 
 #### ---- Functions
 
@@ -94,6 +97,16 @@ def format_ds1809_status(step):
     return f"{step}/{DS1809_MAX_STEP} шагов"
 
 
+def voltage_to_dac_code(voltage_v):
+    if voltage_v is None:
+        return 0
+    if voltage_v < 0.0:
+        voltage_v = 0.0
+    if voltage_v > STM32_DAC_VREF:
+        voltage_v = STM32_DAC_VREF
+    return int(round((voltage_v / STM32_DAC_VREF) * STM32_DAC_MAX_CODE))
+
+
 def initialize_ds1809_position(prt, default_step):
     default_step = clamp_int(int(default_step), 0, DS1809_MAX_STEP)
 
@@ -154,6 +167,8 @@ def set_initial_params():
     params['Ad9833Triangle'] = True
     params['DS1809Step'] = DS1809_DEFAULT_STEP
     params['DS1809Status'] = format_ds1809_status(DS1809_DEFAULT_STEP)
+    params['PA4DacVolt'] = str(PA4_DAC_DEFAULT_VOLT)
+    params['PA4DacStatus'] = f"0 / {STM32_DAC_MAX_CODE}"
     return params
 
 def update_data_lists():
@@ -570,6 +585,21 @@ if __name__ == "__main__":
             params['DS1809Step'] = ds1809_step
             params['DS1809Status'] = format_ds1809_status(ds1809_step)
             window['-DS1809Status-'].update(params['DS1809Status'])
+        elif event == '-SetPA4Dac-':
+            voltage_v = parse_optional_float(values.get('-PA4DacVolt-'))
+            if voltage_v is None:
+                print('Invalid PA4 DAC voltage value.')
+            else:
+                if voltage_v < 0.0:
+                    voltage_v = 0.0
+                if voltage_v > STM32_DAC_VREF:
+                    voltage_v = STM32_DAC_VREF
+                dac_code = voltage_to_dac_code(voltage_v)
+                dev.set_stm32_dac(prt, dac_code=dac_code, enable=True)
+                params['PA4DacVolt'] = f"{voltage_v:.3f}"
+                params['PA4DacStatus'] = f"{dac_code} / {STM32_DAC_MAX_CODE}"
+                window['-PA4DacVolt-'].update(params['PA4DacVolt'])
+                window['-PA4DacStatus-'].update(params['PA4DacStatus'])
         elif event == '-StopCycle-':
             window['-StopCycle-'].update(disabled = True)
             current_and_temperature_settings_available = True