def io_init(self):
# configure spi pins
self.spi = bitbang_spi(self.pins['lmx_le'], self.pins['lmx_data'],
self.pins['lmx_lock'], self.pins['lmx_clk'])
self.gpio = GPIO()
# configure gpio pins
self.gpio.set_output(self.pins['lmx_pow_en'])
self.gpio.set_value(self.pins['lmx_pow_en'], self.gpio.HIGH)
self.gpio.set_output(self.pins['lmx_ce'])
#GPIO.setup(self.pins['lmx_lock'], GPIO.IN)
if self.rf_board:
self.gpio.set_output(self.pins['-5v_en'])
self.gpio.set_value(self.pins['-5v_en'], self.gpio.HIGH)
self.gpio.set_output(self.pins['amp_en'])
# TODO: disable 5V rail until DAC is tested, active low
self.gpio.set_output(self.pins['amp_en'], self.gpio.HIGH)
self.dac_spi = bitbang_spi(self.pins['dac_cs'],
self.pins['dac_data'], None,
self.pins['dac_sck'])
self.set_power_dac(500)
time.sleep(.1)
def io_init(self):
gpio = GPIO()
gpio.set_output(CLK_REF_SEL)
gpio.set_output(PLL_POW_EN)
gpio.set_value(CLK_REF_SEL, gpio.HIGH)
gpio.set_value(PLL_POW_EN, gpio.HIGH)
def __init__(self, spi_cs, spi_mosi, spi_miso, spi_clk):
self.gpio = GPIO()
self.spi_cs = spi_cs
self.spi_mosi = spi_mosi
self.spi_miso = spi_miso
self.spi_clk = spi_clk
self.gpio.set_output(spi_cs)
self.gpio.set_output(spi_mosi)
self.gpio.set_output(spi_clk)
if self.spi_miso != None:
self.gpio.set_input(spi_miso)
self.gpio.set_value(spi_cs, self.gpio.HIGH)
def __init__(self, spi_cs, spi_mosi, spi_miso, spi_clk, rising_data = True, latch = None, enable_low = True):
self.gpio = GPIO()
self.rising_data = rising_data
self.enable_low = enable_low
self.spi_cs = spi_cs
self.spi_mosi = spi_mosi
self.spi_miso = spi_miso
self.spi_clk = spi_clk
self.latch = latch
self.gpio.set_output(spi_cs)
self.gpio.set_output(spi_mosi)
self.gpio.set_output(spi_clk)
if self.spi_miso != None:
self.gpio.set_input(spi_miso)
if self.latch != None:
self.gpio.set_output(latch)
self.gpio.set_value(spi_cs, self.enable_low)
def io_init(self):
# configure spi pins
self.spi = bitbang_spi(self.pins['lmx_le'], self.pins['lmx_data'],
self.pins['lmx_lock'], self.pins['lmx_clk'])
self.gpio = GPIO()
# configure gpio pins
self.gpio.set_output(self.pins['lmx_pow_en'])
self.gpio.set_value(self.pins['lmx_pow_en'], self.gpio.HIGH)
self.gpio.set_output(self.pins['lmx_ce'])
#GPIO.setup(self.pins['lmx_lock'], GPIO.IN)
if self.rf_board:
self.dac_spi = bitbang_spi(self.pins['dac_cs'],
self.pins['dac_data'], None,
self.pins['dac_sck'])
self.set_power_dac(000)
self.gpio.set_output(self.pins['amp_en'])
self.gpio.set_value(self.pins['amp_en'], self.gpio.LOW)
time.sleep(.1)
spi, 0x07,
0x0e) # set decimation rate to 900, 60 * (M + 1) if K = 0, M = 14
# configure SSI
ad9864_write_reg(spi, 0x1A, 0x07) # (clkout freq = adc clk / 7)
ad9864_write_reg(spi, 0x18, 0x00) # take fs and clkout out of tristate
# set doutb to tristate
ad9864_write_reg(spi, 0x3B, 0x08) # disable mosi on doutb
if __name__ == '__main__':
from mmap_gpio import GPIO
import time
gpio = GPIO()
SYNCB = PINS.AD_SYNCB
V3_EN = PINS.PLL_3V3_EN
gpio.set_output(SYNCB)
gpio.set_output(V3_EN)
gpio.set_output(ADC_CLK_EN)
gpio.set_value(V3_EN, gpio.HIGH)
gpio.set_value(SYNCB, gpio.HIGH)
gpio.set_value(ADC_CLK_EN, gpio.HIGH)
print("SYNCB HIGH")
time.sleep(.5)
spi1 = bitbang_spi(ADC_SPI_CS1, ADC_SPI_MOSI, ADC_SPI_MISO, ADC_SPI_CLK)
def __init__(self, context, port):
self.command_handlers = {\
VNA_SW_CMD: self._set_switch, \
MIX_EN_CMD: self._enable_mixer, \
MIX_MUL_CMD: self._set_multiplier, \
ADC_INIT_CMD : self._init_adc, \
ADC_SYNC_CMD: self._sync_adc,\
ADC_ATTEN_CMD : self._attenuate_adc}
# init socket stuff
self.context = context
self.socket = context.socket(zmq.REP)
print('binding socket..')
self.socket.bind("tcp://*:{}".format(str(port)))
print('binding complete')
# init io stuff
self.gpio = GPIO()
print('bringing up 3.3V rail')
self.gpio.set_output(V3_EN)
self.gpio.set_value(V3_EN, self.gpio.HIGH)
print('initializing reference clocks')
self.synth = ad9577_synth()
self.synth.lo_powerdown()
print('setting up IO')
self.gpio.set_output(DEMOD_3V3_EN)
self.gpio.set_output(MIX_EN)
self.gpio.set_output(MIX_X2)
self.gpio.set_output(SW_PORT_SEL)
self.gpio.set_output(ADC_CLK_EN)
self.gpio.set_output(LO_BUF_AMP_EN)
self.gpio.set_output(SYNCB)
print('setting default values')
self.gpio.set_value(DEMOD_3V3_EN, self.gpio.HIGH)
self.gpio.set_value(MIX_EN, self.gpio.LOW)
self.gpio.set_value(MIX_X2, self.gpio.LOW)
self.gpio.set_value(LO_BUF_AMP_EN, self.gpio.LOW)
self.gpio.set_value(ADC_CLK_EN, self.gpio.HIGH)
self.gpio.set_value(SYNCB, self.gpio.HIGH)
self.gpio.set_value(SW_PORT_SEL, self.gpio.HIGH)
print('initalizing ADCs')
self.adc_spi1 = bitbang_spi(ADC_SPI_CS1, ADC_SPI_MOSI, ADC_SPI_MISO,
ADC_SPI_CLK)
self.adc_spi2 = bitbang_spi(ADC_SPI_CS2, ADC_SPI_MOSI, ADC_SPI_MISO,
ADC_SPI_CLK)
self.adc_spi3 = bitbang_spi(ADC_SPI_CS3, ADC_SPI_MOSI, ADC_SPI_MISO,
ADC_SPI_CLK)
self.adc_spi4 = bitbang_spi(ADC_SPI_CS4, ADC_SPI_MOSI, ADC_SPI_MISO,
ADC_SPI_CLK)
self.adc_spis = [
self.adc_spi1, self.adc_spi2, self.adc_spi3, self.adc_spi4
]
for s in self.adc_spis:
ad9864_tristate_miso(s)
print('init complete')