def init_oled():
# I2C connected to Y9, Y10 (I2C bus 2) and Y11 is reset low active
#OLED
oled = OLED_938(pinout={'sda': 'Y10', 'scl': 'Y9', 'res': 'Y8'}, height=64,
external_vcc=False, i2c_devid=61)
oled.poweron()
oled.init_display()
oled.draw_text(0,20,"Initializing")
oled.display()
return oled
def __init__(self, pins):
if pins['a_out'] == 'X5':
self.dac = pyb.DAC(1, bits=12)
else:
self.dac = pyb.DAC(2, bits=12)
self.adc = pyb.ADC(pins['a_in'])
self.mic = pyb.ADC(pins['mic'])
self.pot = pyb.ADC(pins['pot'])
# Virtual Instrument Parameters at start up
self.sig_freq = 1000.0 # sinewave frequency
self.dc_v = 2020 # DC voltage level
self.max_v = 4095 # maximum voltage
self.min_v = 0 # minimum voltage
self.N_samp = 256 # number of sample in one cycle to generate
self.samp_freq = 100
self.buf_size = 4096
self.N_window = 1000
self.duty_cycle = 90
self.function = "Idle"
self.buf_max = 8192
self.dac.write(0)
# Initialise OLED display
self.test_dev = pyb.I2C('Y', pyb.I2C.MASTER)
if (not self.test_dev.scan()):
self.oled = None
else:
self.oled = OLED_938(pinout={
'sda': 'Y10',
'scl': 'Y9',
'res': 'Y8'
},
height=64,
external_vcc=False,
i2c_devid=61)
self.oled.poweron()
self.oled.init_display()
self.oled.draw_text(0, 0, "-- PyBench v1.1 --")
self.oled.draw_text(30, 40, "** READY **")
self.oled.display()
# Initialise IMU - connected to I2C(1) - add handling missing IMU later
self.imu = MPU6050(1, False)
-----------------------------------------------------------
Name: Lab 4 Exercise 4
-----------------------------------------------------------
Learning to use rhe OLED deisplay driver
-----------------------------------------------------------
'''
import pyb
from pyb import LED, ADC, Pin # Pyboard basic library
from oled_938 import OLED_938 # Use various class libraries in pyb
# Create peripheral objects
b_LED = LED(4)
pot = ADC(Pin('X11'))
# I2C connected to Y9, Y10 (I2C bus 2) and Y11 is reset low active
oled = OLED_938(pinout = {'sda': 'Y10', 'scl': 'Y9', 'res': 'Y8'}, height = 64, external_vcc = False, i2c_devid = 61)
oled.poweron()
oled.init_display()
# Simple Hello world message
oled.draw_text(0, 0, 'Hello, world!') # each character is 6x8 pixels
tic = pyb.millis() # store starting time
while True:
b_LED.toggle()
toc = pyb.millis() # read elapsed time
oled.draw_text(0, 20, 'Delayed time:{:6.3f}sec'.format((toc-tic)*0.001))
oled.draw_text(0, 40, 'POT5K reading:{:5d}'.format(pot.read()))
tic = pyb.millis() # start time
oled.display()
delay = pyb.rng()%1000 # Generate a random number btw 0 and 999
