diff options
Diffstat (limited to 'tests/wipy/i2c.py')
| -rw-r--r-- | tests/wipy/i2c.py | 47 |
1 files changed, 23 insertions, 24 deletions
diff --git a/tests/wipy/i2c.py b/tests/wipy/i2c.py index 693155419..c7d32f663 100644 --- a/tests/wipy/i2c.py +++ b/tests/wipy/i2c.py @@ -1,19 +1,19 @@ -''' +""" 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') +if "LaunchPad" in mch: + i2c_pins = ("GP11", "GP10") +elif "WiPy" in mch: + i2c_pins = ("GP15", "GP10") else: - raise Exception('Board not supported!') + raise Exception("Board not supported!") i2c = I2C(0, I2C.MASTER, baudrate=400000) # try initing without the peripheral id @@ -41,26 +41,26 @@ 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(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 +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(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 +data = i2c.readfrom_mem(addr, 116, 2) # read the "who am I?" register print(0x68 == data[1]) -print(data == b'\x00\x68') +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(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(reg2 == b"\x00\x68") -print(1 == i2c.readfrom_mem_into(addr, 107, reg)) # read the power management register 1 +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 @@ -100,13 +100,13 @@ 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 +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 +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]) @@ -114,14 +114,14 @@ i2c.readfrom_mem_into(addr, 107, reg2) print(0x40 == reg2[0]) print(0x00 == reg2[1]) -reg2[0] = 107 # register address +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(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): +for i in range(0, 1000): i2c = I2C(0, I2C.MASTER, baudrate=100000) # test deinit @@ -173,4 +173,3 @@ except Exception: # reinitialization must work i2c.init(baudrate=400000) print(i2c) - |