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@wyojustin

wyojustin/NavKey.py

Created October 26, 2019 21:00
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NavKey Test Code
Raw
gistfile1.txt
Write a value to the counter register... then read it back.
Write Read
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Raw
NavKey.py
import time
import smbus2
I2C = smbus2.SMBus(1)
NAVKEY_ADDR = 0x10
FLOAT_DATA = 0x01
INT_DATA = 0x00
WRAP_ENABLE = 0x02
WRAP_DISABLE = 0x00
DIRE_LEFT = 0x04
DIRE_RIGHT = 0x00
IPUP_DISABLE = 0x08
IPUP_ENABLE = 0x00
CLK_STRECH_ENABLE = 0x10
CLK_STRECH_DISABLE = 0x00
EEPROM_BANK1 = 0x20
EEPROM_BANK2 = 0x00
RESET = 0x80
REG_GCONF = 0x00
REG_GP1CONF = 0x01
REG_GP2CONF = 0x02
REG_GP3CONF = 0x03
REG_INTCONFB2 = 0x04
REG_INTCONFB1 = 0x05
REG_STATUSB2 = 0x06
REG_STATUSB1 = 0x07
REG_SSTATUS = 0x08
REG_FSTATUS = 0x09
REG_CVALB4 = 0x0A
REG_CVALB3 = 0x0B
REG_CVALB2 = 0x0C
REG_CVALB1 = 0x0D
REG_CMAXB4 = 0x0E
REG_CMAXB3 = 0x0F
REG_CMAXB2 = 0x10
REG_CMAXB1 = 0x11
REG_CMINB4 = 0x12
REG_CMINB3 = 0x13
REG_CMINB2 = 0x14
REG_CMINB1 = 0x15
REG_ISTEPB4 = 0x16
REG_ISTEPB3 = 0x17
REG_ISTEPB2 = 0x18
REG_ISTEPB1 = 0x19
REG_GP1REG = 0x1A
REG_GP2REG = 0x1B
REG_GP3REG = 0x1C
REG_DPPERIOD = 0x1D
REG_FADEGP = 0x1E
REG_GAMMAGP1 = 0x1F
REG_GAMMAGP2 = 0x20
REG_GAMMAGP3 = 0x21
REG_IDCODE = 0x70
REG_VERSION = 0x71
REG_EEPROMS = 0x80
def byte2bin(b):
out = ''
for i in range(8):
out += str((b >> i) & 1)
return out
def bytes2bin(bytes):
out = ''
for b in bytes:
out += byte2bin(b)
return out
class NavKey:
def __init__(self, addr):
self.addr = addr
conf = INT_DATA | WRAP_ENABLE | DIRE_RIGHT | IPUP_ENABLE
self.writeNavKey(REG_GCONF, conf);
self.writeCounter(0); #/* Reset the counter value */
self.writeMin(0); #/* Set the minimum threshold */
self.writeMax(255000); #/* Set the maximum threshold*/
self.writeStep(1); #/* Set the step to 1*/
self.autoconfigInterrupt(); #/* Enable the interrupt with the attached callback */
# /** Check if there is some attached callback and enable the corresponding interrupt **/
def autoconfigInterrupt(self):
reg = 1
self.writeInterruptConfig(reg)
def writeInterruptConfig(self, interrupt):
self.writeNavKey(REG_INTCONFB2, interrupt);
def writeCounter(self, value):
self.writeNavKey(REG_CVALB4, value);
def writeMax(self, max):
self.writeNavKey(REG_CMAXB4, max);
def writeMin(self, min):
self.writeNavKey(REG_CMAXB4, min);
def writeStep(self, step):
self.writeNavKey(REG_ISTEPB4, step);
def writeNavKey(self, reg, byte):
I2C.write_byte_data(self.addr, reg, byte)
def readNavKey(self, reg):
return I2C.read_byte_data(self.addr, reg)
def read_all(self):
return I2C.read_i2c_block_data(self.addr, 0, 32) + I2C.read_i2c_block_data(self.addr, 32, 32)
def get_events(self):
data = I2C.read_i2c_block_data(self.addr, REG_STATUSB2, 2)
data += I2C.read_i2c_block_data(self.addr, REG_CVALB4, 32)
return bytes2bin(data)
def readCounterInt(self):
return self.readNavKeyInt(REG_CVALB4)
def readNavKeyInt(self, reg):
bytes = I2C.read_i2c_block_data(self.addr, reg, 4)
print bytes2bin(bytes)
nav = NavKey(NAVKEY_ADDR)
for count in range(1023):
print '%6d' % count,
nav.readCounterInt()
nav.writeCounter(256+count); #/* Reset the counter value */
time.sleep(.01)
count += 1
continue
for i in range(0x71):
x = nav.readNavKey(i)
if x:
print '0x%02x:0x%02x' % (i, x),
print
time.sleep(1)
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