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Diffstat (limited to 'tests/wipy/i2c.py')
| -rw-r--r-- | tests/wipy/i2c.py | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/tests/wipy/i2c.py b/tests/wipy/i2c.py deleted file mode 100644 index 39dcdc722..000000000 --- a/tests/wipy/i2c.py +++ /dev/null @@ -1,175 +0,0 @@ -''' -I2C test for the CC3200 based boards. -A MPU-9150 sensor must be connected to the I2C bus. -''' - -from machine import I2C -import os -import time - -mch = os.uname().machine -if 'LaunchPad' in mch: - i2c_pins = ('GP11', 'GP10') -elif 'WiPy' in mch: - i2c_pins = ('GP15', 'GP10') -else: - raise Exception('Board not supported!') - -i2c = I2C(0, I2C.MASTER, baudrate=400000) -# try initing without the peripheral id -i2c = I2C() -print(i2c) -i2c = I2C(mode=I2C.MASTER, baudrate=50000, pins=i2c_pins) -print(i2c) - -i2c = I2C(0, I2C.MASTER, baudrate=100000) -print(i2c) -i2c = I2C(0, mode=I2C.MASTER, baudrate=400000) -print(i2c) -i2c = I2C(0, mode=I2C.MASTER, baudrate=400000, pins=i2c_pins) -print(i2c) - -addr = i2c.scan()[0] -print(addr) - -reg = bytearray(1) -reg2 = bytearray(2) -reg2_r = bytearray(2) - -# reset the sensor -reg[0] |= 0x80 -print(1 == i2c.writeto_mem(addr, 107, reg)) -time.sleep_ms(100) # wait for the sensor to reset... - -print(1 == i2c.readfrom_mem_into(addr, 107, reg)) # read the power management register 1 -print(0x40 == reg[0]) - -# now just read one byte -data = i2c.readfrom_mem(addr, 117, 1) # read the "who am I?" register -print(0x68 == data[0]) -print(len(data) == 1) -print(1 == i2c.readfrom_mem_into(addr, 117, reg)) # read the "who am I?" register again -print(0x68 == reg[0]) - -# now try reading two bytes -data = i2c.readfrom_mem(addr, 116, 2) # read the "who am I?" register -print(0x68 == data[1]) -print(data == b'\x00\x68') -print(len(data) == 2) -print(2 == i2c.readfrom_mem_into(addr, 116, reg2)) # read the "who am I?" register again -print(0x68 == reg2[1]) -print(reg2 == b'\x00\x68') - -print(1 == i2c.readfrom_mem_into(addr, 107, reg)) # read the power management register 1 -print(0x40 == reg[0]) -# clear the sleep bit -reg[0] = 0 -print(1 == i2c.writeto_mem(addr, 107, reg)) -# read it back -i2c.readfrom_mem_into(addr, 107, reg) -print(0 == reg[0]) - -# set the sleep bit -reg[0] = 0x40 -print(1 == i2c.writeto_mem(addr, 107, reg)) -# read it back -i2c.readfrom_mem_into(addr, 107, reg) -print(0x40 == reg[0]) - -# reset the sensor -reg[0] |= 0x80 -print(1 == i2c.writeto_mem(addr, 107, reg)) -time.sleep_ms(100) # wait for the sensor to reset... - -# now read and write two register at a time -print(2 == i2c.readfrom_mem_into(addr, 107, reg2)) -print(0x40 == reg2[0]) -print(0x00 == reg2[1]) -# clear the sleep bit -reg2[0] = 0 -# set some other bits -reg2[1] |= 0x03 -print(2 == i2c.writeto_mem(addr, 107, reg2)) -# read it back -i2c.readfrom_mem_into(addr, 107, reg2_r) -print(reg2 == reg2_r) - -# reset the sensor -reg[0] = 0x80 -print(1 == i2c.writeto_mem(addr, 107, reg)) -time.sleep_ms(100) # wait for the sensor to reset... - -# try some raw read and writes -reg[0] = 117 # register address -print(1 == i2c.writeto(addr, reg, stop=False)) # just write the register address -# now read -print(1 == i2c.readfrom_into(addr, reg)) -print(reg[0] == 0x68) -reg[0] = 117 # register address -print(1 == i2c.writeto(addr, reg, stop=False)) # just write the register address -# now read -print(0x68 == i2c.readfrom(addr, 1)[0]) - -i2c.readfrom_mem_into(addr, 107, reg2) -print(0x40 == reg2[0]) -print(0x00 == reg2[1]) - -reg2[0] = 107 # register address -reg2[1] = 0 -print(2 == i2c.writeto(addr, reg2, stop=True)) # write the register address and the data -i2c.readfrom_mem_into(addr, 107, reg) # check it back -print(reg[0] == 0) - -# check for memory leaks... -for i in range (0, 1000): - i2c = I2C(0, I2C.MASTER, baudrate=100000) - -# test deinit -i2c = I2C(0, I2C.MASTER, baudrate=100000) -i2c.deinit() -print(i2c) - -# next ones should raise -try: - i2c.scan() -except Exception: - print("Exception") - -try: - i2c.readfrom(addr, 1) -except Exception: - print("Exception") - -try: - i2c.readfrom_into(addr, reg) -except Exception: - print("Exception") - -try: - i2c.readfrom_mem_into(addr, 107, reg) -except Exception: - print("Exception") - -try: - i2c.writeto(addr, reg, stop=False) -except Exception: - print("Exception") - -try: - i2c.writeto_mem(addr, 107, reg) -except Exception: - print("Exception") - -try: - i2c.readfrom_mem(addr, 116, 2) -except Exception: - print("Exception") - -try: - I2C(1, I2C.MASTER, baudrate=100000) -except Exception: - print("Exception") - -# reinitialization must work -i2c.init(baudrate=400000) -print(i2c) |