ad9102 prestored saw done
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Ayzen
@ -10,6 +10,13 @@ GET_DATA_TOTAL_LENGTH = 30 # Total number of bytes when getting DATA
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SEND_PARAMS_TOTAL_LENGTH = 30 # Total number of bytes when sending parameters
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TASK_ENABLE_COMMAND_LENGTH = 32 # Total number of bytes when sending TASK_ENABLE command
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AD9833_CMD_TOTAL_LENGTH = 10 # Total bytes when sending AD9102 saw command
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AD9833_CMD_HEADER = "8888"
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AD9102_SAW_STEP_DEFAULT = 1
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AD9102_PAT_PERIOD_DEFAULT = 0xFFFF
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AD9102_PAT_PERIOD_BASE_DEFAULT = 0x02
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AD9102_DAC_CLK_HZ = None # set to actual DAC clock if you want freq->SAW_STEP conversion
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class TaskType(IntEnum):
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Manual = 0x00
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ChangeCurrentLD1 = 0x01
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@ -148,6 +155,17 @@ def send_STATE(prt):
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pass
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def send_AD9833(prt, bytestring):
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''' Start/stop AD9833 output with triangle (ramp) mode (0x8888 + ...).
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Expected device answer: STATE.
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'''
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if len(bytestring) != AD9833_CMD_TOTAL_LENGTH:
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print("Error. Wrong parameter string for AD9833 command.")
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return None
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prt.write(bytestring)
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print("Sent: AD9833 ramp command.")
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# ---- Getting data
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@ -262,6 +280,76 @@ def create_TaskEnableCommand(sending_param):
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return bytearray.fromhex(data)
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def calc_saw_step_for_freq(freq_hz: float, dac_clk_hz: float, triangle: bool):
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if freq_hz <= 0 or dac_clk_hz is None or dac_clk_hz <= 0:
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return AD9102_SAW_STEP_DEFAULT
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n = 2 if triangle else 1
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step = int(round(dac_clk_hz / (freq_hz * n * 16384.0)))
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if step < 1:
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step = 1
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if step > 63:
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step = 63
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return step
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def calc_pat_period_for_duty(saw_step: int, duty: float, pat_period_base: int, triangle: bool):
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if duty is None or duty <= 0 or duty > 1.0:
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return AD9102_PAT_PERIOD_DEFAULT
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n = 2 if triangle else 1
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base_cycles = 16 if pat_period_base == 0 else pat_period_base
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ramp_cycles = n * 16384 * max(1, min(63, saw_step))
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pat_period = int(round(ramp_cycles / (duty * base_cycles)))
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if pat_period < 1:
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pat_period = 1
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if pat_period > 0xFFFF:
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pat_period = 0xFFFF
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return pat_period
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def create_AD9833_ramp_command(saw_step: int = None,
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pat_period: int = None,
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pat_period_base: int = None,
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enable: bool = True,
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triangle: bool = True):
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if saw_step is None:
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saw_step = AD9102_SAW_STEP_DEFAULT
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if pat_period is None:
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pat_period = AD9102_PAT_PERIOD_DEFAULT
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if pat_period_base is None:
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pat_period_base = AD9102_PAT_PERIOD_BASE_DEFAULT
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if saw_step < 1:
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saw_step = 1
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if saw_step > 63:
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saw_step = 63
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if pat_period < 0:
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pat_period = 0
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if pat_period > 0xFFFF:
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pat_period = 0xFFFF
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if pat_period_base < 0:
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pat_period_base = 0
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if pat_period_base > 0x0F:
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pat_period_base = 0x0F
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flags = 0
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if enable:
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flags |= 0x0001
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if triangle:
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flags |= 0x0002
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param0 = ((pat_period_base & 0x0F) << 8) | (saw_step & 0xFF)
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crc_word = flags ^ param0 ^ pat_period
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data = flipfour(AD9833_CMD_HEADER) # Word 0 (header)
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data += flipfour(int_to_hex(flags))
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data += flipfour(int_to_hex(param0))
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data += flipfour(int_to_hex(pat_period))
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data += flipfour(int_to_hex(crc_word))
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return bytearray.fromhex(data)
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def encode_Input(params):
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if params is None:
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@ -295,24 +383,38 @@ def encode_Input(params):
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def decode_STATE(state):
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st = flipfour(state)
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if st == '0000':
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if st is None or len(st) != 4:
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return "Error: invalid STATE length."
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hi = int(st[0:2], 16)
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lo = int(st[2:4], 16)
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errors = []
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if lo & 0x01:
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errors.append("SD Card reading/writing error (SD_ERR)")
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if lo & 0x02:
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errors.append("Command error (UART_ERR)")
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if lo & 0x04:
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errors.append("Wrong parameter value error (UART_DECODE_ERR)")
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if lo & 0x08:
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errors.append("Laser 1: TEC driver overheat (TEC1_ERR)")
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if lo & 0x10:
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errors.append("Laser 2: TEC driver overheat (TEC2_ERR)")
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if lo & 0x20:
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errors.append("Resetting system error (DEFAULT_ERR)")
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if lo & 0x40:
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errors.append("File deletion error (REMOVE_ERR)")
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if lo & 0x80:
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errors.append("AD9102 status check failed (AD9102_ERR)")
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if not errors:
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status = "All ok."
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elif st == '0001':
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status = "SD Card reading/writing error (SD_ERR)."
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elif st == '0002':
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status = "Command error (UART_ERR)."
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elif st == '0004':
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status = "Wrong parameter value error (UART_DECODE_ERR)."
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elif st == '0008':
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status = "Laser 1: TEC driver overheat (TEC1_ERR)."
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elif st == '0010':
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status = "Laser 2: TEC driver overheat (TEC2_ERR)."
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elif st == '0020':
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status = "Resetting system error (DEFAULT_ERR)."
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elif st == '0040':
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status = "File deletion error (REMOVE_ERR)."
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else:
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status = "Unknown or reserved error."
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status = "; ".join(errors)
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if hi != 0:
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status += f" | AD9102_PAT_STATUS=0x{hi:02X}"
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return status
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@ -342,6 +444,3 @@ def decode_DATA(dh):
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return data
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