class AD345:
def __init__(self):
self.cs_pin = Pin('X5', Pin.OUT_PP, Pin.PULL_NONE)
self.cs_pin.high()
self.spi = SPI(1, SPI.MASTER, baudrate=2000000, polarity=0, phase=1, bits=8)
self.devid = self.read_id()
if self.devid == ADXL345_DEVID_VAL:
self.write_bytes(ADXL345_POWER_CTL_ADDR, bytearray([ADXL345_POWER_CTL_CONF]))
self.write_bytes(ADXL345_BW_RATE_ADDR, bytearray([ADXL345_BW_RATE_CONF]))
self.write_bytes(ADXL345_DATA_FORMAT_ADDR, bytearray([ADXL345_DATA_FORMAT_CONF]))
self.write_bytes(ADXL345_ENABLE_MSRM_ADDR, bytearray([ADXL345_ENABLE_MSRM_CONF]))
self.sensitivity = 32
else:
raise Exception('ADXL345 accelerometer not present')
def convert_raw_to_g(self, x):
if x & 0x80:
return x * self.sensitivity / 1000
def read_bytes(self, addr, nbytes):
if nbytes > 1:
addr |= READWRITE_CMD | MULTIPLEBYTE_CMD
else:
addr |= READWRITE_CMD
self.cs_pin.low()
self.spi.send(addr)
#buf = self.spi.send_recv(bytearray(nbytes * [0])) # read data, MSB first
buf = self.spi.recv(nbytes)
self.cs_pin.high()
return buf
def write_bytes(self, addr, buf):
if len(buf) > 1:
addr |= MULTIPLEBYTE_CMD
self.cs_pin.low()
self.spi.send(addr)
for b in buf:
self.spi.send(b)
self.cs_pin.high()
def read_id(self):
return self.read_bytes(DEVID_ADDR, 1)[0]
def x(self):
return self.convert_raw_to_g(self.read_bytes(DATAX1_ADDR, 1)[0])
def y(self):
return self.convert_raw_to_g(self.read_bytes(DATAY1_ADDR, 1)[0])
def z(self):
return self.convert_raw_to_g(self.read_bytes(DATAZ1_ADDR, 1)[0])
def xyz(self):
return (self.x(), self.y(), self.z())
from machine import Pin, SPI
from time import sleep_ms
# UEXT wiring on the Pyboard.
# https://github.com/mchobby/pyboard-driver/tree/master/UEXT
spi = SPI(2) # MOSI=Y8, MISO=Y7, SCK=Y6, SS=Y5
spi.init(SPI.MASTER, baudrate=5000000, phase=0, polarity=0)
# We must manage the SS signal ourself
ss = Pin(Pin.board.Y5, Pin.OUT)
# Start a new SPI transaction
ss.value(1)
sleep_ms(10)
ss.value(0)
print("Write a A on the screen")
spi.send(bytes([0x80, 0x00, 0x41]))
sleep_ms(500)
# Now, read back the memory
# Start a new SPI transaction
ss.value(1)
sleep_ms(10)
ss.value(0)
spi.send(bytes([0x00, 0x00]))
v = spi.recv(1) # read one byte
print("Response:")
print(v) # bytes
print("0x%02x" % v[0]) # print as Hexa
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""
from machine import Pin, SPI
from time import sleep_ms
# UEXT wiring on the Pyboard.
# https://github.com/mchobby/pyboard-driver/tree/master/UEXT
spi = SPI(2) # MOSI=Y8, MISO=Y7, SCK=Y6, SS=Y5
spi.init(SPI.MASTER, baudrate=5000000, phase=0, polarity=0)
# We must manage the SS signal ourself
ss = Pin(Pin.board.Y5, Pin.OUT)
# Start a new SPI transaction
ss.value(1)
sleep_ms(10)
ss.value(0)
print("Read IDCode from GameDuino (0x6d expected)")
spi.send(bytes([0x28, 0x00]))
buf = bytearray(1)
spi.recv(buf) # read 1 byte
print("Response:")
print(buf) # bytes
print("0x%02x" % buf[0]) # print as Hexa
from time import sleep_ms # UEXT wiring on the Pyboard. # https://github.com/mchobby/pyboard-driver/tree/master/UEXT spi = SPI(2) # MOSI=Y8, MISO=Y7, SCK=Y6, SS=Y5 spi.init( baudrate=5000000, phase=0, polarity=0 ) # We must manage the SS signal ourself ss = Pin( Pin.board.Y5, Pin.OUT ) # Start a new SPI transaction ss.value( 1 ) sleep_ms( 10 ) ss.value( 0 ) print( "Write a A on the screen" ) spi.send( bytes([0x80,0x00,0x41]) ) sleep_ms( 500 ) # Now, read back the memory # Start a new SPI transaction ss.value( 1 ) sleep_ms( 10 ) ss.value( 0 ) spi.send( bytes([0x00,0x00]) ) v = spi.recv( 1 ) # read one byte print( "Response:" ) print( v ) # bytes print( "0x%02x" % v[0] ) # print as Hexa
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. """ from machine import Pin, SPI from time import sleep_ms # UEXT wiring on the Pyboard. # https://github.com/mchobby/pyboard-driver/tree/master/UEXT spi = SPI(2) # MOSI=Y8, MISO=Y7, SCK=Y6, SS=Y5 spi.init( baudrate=5000000, phase=0, polarity=0 ) # We must manage the SS signal ourself ss = Pin( Pin.board.Y5, Pin.OUT ) # Start a new SPI transaction ss.value( 1 ) sleep_ms( 10 ) ss.value( 0 ) print( "Read IDCode from GameDuino (0x6d expected)" ) spi.send( bytes([0x28,0x00]) ) buf = bytearray(1) spi.recv( buf ) # read 1 byte print( "Response:" ) print( buf ) # bytes print( "0x%02x" % buf[0] ) # print as Hexa
