D4 = nRESET = 1
D5 = nSLEEP = 1
D6 = nENABLE = 0
D7 = - = X
"""
import time
import logging
from Path import Path
try:
from spi import SPI
# init the SPI for the DAC
spi2_0 = SPI(1, 0)
spi2_0.bpw = 8
spi2_0.mode = 1
# Init the SPI for the serial to parallel
spi2_1 = SPI(1, 1)
spi2_1.bpw = 8
spi2_1.mode = 0
except ImportError:
pass
class Stepper:
all_steppers = list()
revision = "A4"
SLEEP = 6
ENABLED = 4
RESET = 7
D4 = nRESET = 1
D5 = nSLEEP = 1
D6 = nENABLE = 0
D7 = - = X
"""
import time
import logging
from Path import Path
try:
from spi import SPI
# init the SPI for the DAC
spi2_0 = SPI(1, 0)
spi2_0.bpw = 8
spi2_0.mode = 1
# Init the SPI for the serial to parallel
spi2_1 = SPI(1, 1)
spi2_1.bpw = 8
spi2_1.mode = 0
except ImportError:
pass
class Stepper:
all_steppers = list()
revision = "A4"
SLEEP = 6
ENABLED = 4
RESET = 7
from threading import Event, Thread
def repeat(interval, func):
def loop():
while not Event().wait(interval):
func()
Thread(target=loop).start()
# uses https://raw.githubusercontent.com/tomstokes/python-spi/master/spi.py
from spi import SPI
spi = SPI('/dev/spidev1.0')
spi.mode = SPI.MODE_0
spi.bits_per_word = 8
spi.speed = 10 * 1000000
IODIRA = 0x00
IOCON = 0x0a
GPIOA = 0x12
# write to MCP23S17 register(s), GPIOA by default
def mcp23s17(address, values, register=GPIOA):
global spi
opcode = 0x40 | (address << 1)
spi.write([opcode, register] + values)
#!/usr/bin/env python from spi import SPI spi2_1 = SPI(2, 1) spi2_1.bpw = 8 spi2_1.mode = 0 spi2_1.writebytes([0x30])
D2 = MODE1 = X
D3 = MODE2 = X
D4 = nRESET = 1
D5 = nSLEEP = 1
D6 = nENABLE = 0
D7 = = 0
'''
from spi import SPI
from threading import Thread
import time
import logging
# init the SPI for the DAC
spi2_0 = SPI(1, 0)
spi2_0.bpw = 8
spi2_0.mode = 1
# Init the SPI for the serial to parallel
spi2_1 = SPI(1, 1)
spi2_1.bpw = 8
spi2_1.mode = 0
class SMD:
all_smds = list()
''' Send the values to the serial to parallel chips '''
@staticmethod
def commit():
bytes = []
for smd in SMD.all_smds:
bytes.append(smd.getState())
D3 = MODE2 = X
D4 = nRESET = 1
D5 = nSLEEP = 1
D6 = nENABLE = 0
D7 = - = X
'''
from spi import SPI
from threading import Thread
import time
import logging
# init the SPI for the DAC
spi2_0 = SPI(1, 0)
spi2_0.bpw = 8
spi2_0.mode = 1
# Init the SPI for the serial to parallel
spi2_1 = SPI(1, 1)
spi2_1.bpw = 8
spi2_1.mode = 0
class Stepper:
all_steppers = list()
revision = "A4"
SLEEP = 6
ENABLED = 4
RESET = 7
DECAY = 5
''' Send the values to the serial to parallel chips '''
#!/usr/bin/env python
from spi import SPI
from time import sleep
from datetime import datetime
port = SPI(2,0)
port.msh = 100000
#port.lsbfirst = True
port.mode = 0b00
_DISPLAY_6X12 = 0x02
_DISPLAY_7X11 = 0x03
_AUTO_INCREMENT = 0x40
_FIXED_ADDRESS = 0x44
_DISPLAY_OFF = 0x80
_DISPLAY_1_16 = 0x88
_DISPLAY_2_16 = 0x89
_DISPLAY_4_16 = 0x8A
_DISPLAY_10_16 = 0x8B
_DISPLAY_11_16 = 0x8C
_DISPLAY_12_16 = 0x8D
_DISPLAY_13_16 = 0x8E
_DISPLAY_14_16 = 0x8F
addresses = (0xC0,0xC2,0xC4,0xC6)
font = { 0: 0xFC,
1: 0x60,
2: 0xDA,
3: 0xF2,
#!/usr/bin/env python from spi import SPI # Set up the SPI dac = SPI(2, 0) dac.mode = 1 # SPI mode 1 dac.bpw = 8 # 8 bits pr word dac.lsbfirst = False # MSB transfers # Calculate the value for the DAC iChop = 2.0 # Current chopping limit (This is the value you can change) vRef = 3.3 # Voltage reference on the DAC rSense = 0.1 # Resistance for the vOut = iChop*5.0*rSense # Calculated voltage out from the DAC (See page 9 in the datasheet for the DAC) dacval = int((vOut*256.0)/vRef) # Update all channels with the value for addr in range(8): byte1 = ((dacval & 0xF0)>>4) + (addr<<4) byte2 = (dacval & 0x0F)<<4 dac.writebytes([byte1, byte2]) # Update all channels dac.writebytes([0xA0, 0xFF]) print "All channels now have vOut = "+str(vOut)+", iChop = "+str(iChop)
