# This code scans any I2C devices connected to I2C0 at frequency 100kHz # and print the address(es) on serial. # --- # Connection: I2C0, SCL0 = GP1, SDA0 = GP0 # --- # Hardware: Any RP2040 boards. # --- import machine i2c0 = machine.I2C(0, scl=machine.Pin(1), sda=machine.Pin(0), freq=100000) devices = i2c0.scan() if devices: for d in devices: print("i2c0:") print(hex(d))
I2C scan with printing
# This code scans any I2C devices connected to I2C0 & I2C1 at frequency 100kHz # and print the address(es) on serial. # --- # Connection: I2C0, SCL0 = GP1, SDA0 = GP0 # I2C1, SCL1 = GP3, SDA1 = GP2 # --- # Hardware: Any RP2040 boards. # --- import machine i2c0 = machine.I2C(0, scl=machine.Pin(1), sda=machine.Pin(0), freq=100000) i2c1 = machine.I2C(1, scl=machine.Pin(3), sda=machine.Pin(2), freq=100000) devices = i2c0.scan() if devices: for d in devices: print("i2c0:") print(hex(d)) devices = i2c1.scan() if devices: for d in devices: print("\ni2c1:") print(hex(d))
# from machine import I2C class MMA7660_DATA: def __init__(self): self.X = None self.Y = None self.Z = None self.TILT = None self.SRST = None self.SPCNT = None self.INTSU = None self.MODE = None self.SR = None self.PDET = None self.PD = None # class MMA7660_ACC_DATA: # def __init__(self,x,y,z): # self.x = x # self.y = y # self.z = z class MMA7660_LOOKUP(object): def __init__(self): self.g = None self.xyAngle = None self.zAngle = None class Accelerometer(object): MMA7660_ADDR = 0x4c MMA7660TIMEOUT = 500 MMA7660_X = 0x00 MMA7660_Y = 0x01 MMA7660_Z = 0x02 MMA7660_TILT = 0x03 MMA7660_SRST = 0x04 MMA7660_SPCNT = 0x05 MMA7660_INTSU = 0x06 MMA7660_SHINTX = 0x80 MMA7660_SHINTY = 0x40 MMA7660_SHINTZ = 0x20 MMA7660_GINT = 0x10 MMA7660_ASINT = 0x08 MMA7660_PDINT = 0x04 MMA7660_PLINT = 0x02 MMA7660_FBINT = 0x01 MMA7660_MODE = 0x07 MMA7660_STAND_BY = 0x00 MMA7660_ACTIVE = 0x01 MMA7660_SR = 0x08 # sample rate register AUTO_SLEEP_120 = 0X00 # 120 sample per second AUTO_SLEEP_64 = 0X01 AUTO_SLEEP_32 = 0X02 AUTO_SLEEP_16 = 0X03 AUTO_SLEEP_8 = 0X04 AUTO_SLEEP_4 = 0X05 AUTO_SLEEP_2 = 0X06 AUTO_SLEEP_1 = 0X07 MMA7660_PDET = 0x09 MMA7660_PD = 0x0A accLookup = [] for i in range(64): s = MMA7660_LOOKUP() accLookup.insert(i,s) def __init__(self, i2c, address, interrupts=False): self.i2c = i2c self.address = address i2c.init(I2C.MASTER, baudrate=20000) initAccelTable() setMode(MMA7660_STAND_BY) setSampleRate(AUTO_SLEEP_32) if interrupts: write(MMA7660_INTSU, interrupts) setMode(MMA7660_ACTIVE) def write(self, register, data): register = bytearray([register]) data = bytearray([data]) self.i2c.writeto_mem(self.address, register, data) def read(self, register): register = bytearray([register]) data = bytearray([data]) buf = '' i2c.readfrom_mem_into(self.address,register,buf) return buf def initAccelTable(self): val = 0 for i in range(32): accLookup[i].g = val val += 0.047 val = -0.047 for i in range(63,31,-1): accLookup[i].g = val val -= 0.047 val = 0 valZ = 90 for i in range(22): accLookup[i].xyAngle = val accLookup[i].zAngle = valZ val -= 2.69 valZ += 2.69 val = -2.69 valZ = -87.31 for i in range(63, 42,-1): accLookup[i].xyAngle = val accLookup[i].zAngle = valZ val -= 2.69 valZ += 2.69 for i in range(22,43): accLookup[i].xyAngle = 255 accLookup[i].zAngle = 255 def setMode(self, mode): write(MMA7660_MODE,mode) def setSampleRate(self): write(MMA7660_SR,rate) def getXYZ(self, x, y, z): count = 0 val = [64,64,64] i2c.readfrom(self.address,1) i2c.readfrom(self.address,3) return data = (x,y,z) def getAcceleration(self): return True return False def getAllData(self): count = 0 return True return False