def __init__(self, miso, mosi, clk, reset):
# set up GPIO output channel
GPIO.setup(miso, GPIO.IN)
GPIO.setup(mosi, GPIO.OUT)
GPIO.setup(clk, GPIO.OUT)
GPIO.setup(reset, GPIO.OUT)
self.miso = miso
self.mosi = mosi
self.clk = clk
self.reset = reset
self.dev_reset()
GPIO.output(self.mosi, GPIO.LOW)
self.rest_ms = 100
time.sleep(0.1)
def __init__(self, miso, mosi, clk, reset): # set up GPIO output channel GPIO.setup(miso, GPIO.IN) GPIO.setup(mosi, GPIO.OUT) GPIO.setup(clk, GPIO.OUT) GPIO.setup(reset,GPIO.OUT) self.miso = miso self.mosi = mosi self.clk = clk self.reset = reset self.dev_reset() GPIO.output(self.mosi, GPIO.LOW) self.rest_ms = 100 time.sleep(0.1)
def sendByte(self, byte):
r = 0
for i in range(0, 8):
v = GPIO.LOW
if (byte & (1 << (7 - i))) > 0: v = GPIO.HIGH
GPIO.output(self.mosi, v)
GPIO.output(self.clk, GPIO.HIGH)
GPIO.usleep(self.rest_ms)
r |= (GPIO.input(self.miso) << i)
GPIO.output(self.clk, GPIO.LOW)
GPIO.usleep(self.rest_ms)
return r
def dev_reset(self):
GPIO.output(self.reset, GPIO.LOW)
time.sleep(0.05)
GPIO.output(self.reset, GPIO.HIGH)
time.sleep(0.05)
def wait(self, us):
GPIO.usleep(us)
def sendByte(self, byte): r = 0 for i in range(0,8): v = GPIO.LOW if (byte&(1<<(7-i)))>0: v = GPIO.HIGH GPIO.output(self.mosi, v) GPIO.output(self.clk, GPIO.HIGH) GPIO.usleep(self.rest_ms) r |= (GPIO.input(self.miso)<<i) GPIO.output(self.clk, GPIO.LOW) GPIO.usleep(self.rest_ms) return r
def dev_reset(self): GPIO.output(self.reset, GPIO.LOW) time.sleep(0.05) GPIO.output(self.reset, GPIO.HIGH) time.sleep(0.05)
def wait(self, us): GPIO.usleep(us)
