pixcap65.py

#
# ------------------------------------------------------------
# Copyright (c) SILAB , Physics Institute of Bonn University
# ------------------------------------------------------------
#
# SVN revision information:
#  $Rev:: 418                   $:
#  $Author:: HK    $:
#  $Date:: 2015-01-04 10:56:36 #$:
#

from basil.dut import Dut
import numpy as np
import time
import pixcap65_constants as c


class pixcap65(Dut):
    def init(self, init_conf=None, **kwargs):
        Dut.init(self, init_conf=init_conf, **kwargs)
        self.switch_on_power_supply_voltages(1)
        self['SPI'].set_size(9960)
        self.reset_chip()

    def close(self):
        self.switch_on_power_supply_voltages(0)
        self['SEQ'].clear()
        Dut.close(self)

    def switch_on_power_supply_voltages(self, pwr_en):
        """
        Switches on default supply voltages
        """
        if(pwr_en):
            self['VDD'].set_current_limit(100, unit='mA')
            # Power
            self['VDD'].set_voltage(1.2, unit='V')
            self['VDD'].set_enable(pwr_en)

            time.sleep(1.0)
            print('')
            print('VDD:\t', format(self['VDD'].get_voltage(unit='V'), '.3f'), 'V\t', format(self['VDD'].get_current(unit='mA'), '.3f'), 'mA')
            print('')
        else:
            self['VDD'].set_enable(pwr_en)

    def get_status(self):
        status = {}
        status['Time'] = time.strftime("%d %M %Y %H:%M:%S")
        status['VDD'] = {'voltage(V)': format(self['VDD'].get_voltage(unit='V'), '.3f'), 'current(mA)':  format(self['VDD'].get_current(unit='mA'), '.3f')}
        return status

    def enable_pixel_clk(self, i_col, i_pix, clk_mask):
        self['SPI']['COL'][c.COL_NMAX - i_col]['PIX'][c.PIX_NMAX - i_pix]['CLK_EN'] = clk_mask
        self.update_spi()

    def enable_pixel_bias(self, i_col, i_pix, bias_mask):
        self['SPI']['COL'][c.COL_NMAX - i_col]['PIX'][c.PIX_NMAX - i_pix]['SEL'] = bias_mask
        self.update_spi()

    def enable_column(self, i_col, EOC_MASK):
        self['SPI']['COL'][c.COL_NMAX - i_col]['EOC'] = EOC_MASK
        self.update_spi()

    def disable_all_pixels(self):
        for i_col in range(0, c.COL_NMAX+1):
            for i_pix in range(0, c.PIX_NMAX+1):
                self['SPI']['COL'][c.COL_NMAX - i_col]['PIX'][c.PIX_NMAX - i_pix]['CLK_EN'] = 0
                self['SPI']['COL'][c.COL_NMAX - i_col]['PIX'][c.PIX_NMAX - i_pix]['SEL'] = 0
        self.update_spi()

    def update_spi(self):
        self['SPI'].write()
        self['SPI'].start()

    def disable_all_columns(self):
        for i_col in range(0, c.COL_NMAX+1):
            self['SPI']['COL'][c.COL_NMAX - i_col]['EOC'] = 0
        self.update_spi()

    def reset_chip(self):
        # reset shift register
        self['GPIO']['RST_B'] = 0
        self['GPIO'].write()
        time.sleep(0.1)
        self['GPIO']['RST_B'] = 1
        self['GPIO'].write()

    def init_config(self):
        self['SPI'].set_size(9960)
        self.reset_chip()