Merge pull request #87 from kattni/tweaks

Updating for ATtiny8x7

Author: kattni

examples/seesaw_analogin_test.py

@@ -4,17 +4,13 @@
 # Simple seesaw test reading analog value
 # on SAMD09, analog in can be pins 2, 3, or 4
 # on Attiny8x7, analog in can be pins 0, 1, 2, 3, 6, 7, 18, 19, 20
-#
-# See the seesaw Learn Guide for wiring details:
-# https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
 
 import time
 import board
 from adafruit_seesaw.seesaw import Seesaw
 from adafruit_seesaw.analoginput import AnalogInput
 
-i2c_bus = board.I2C()
-ss = Seesaw(i2c_bus)
+ss = Seesaw(board.I2C())
 
 analogin_pin = 2
 analog_in = AnalogInput(ss, analogin_pin)

examples/seesaw_digitalio_test.py

@@ -3,17 +3,19 @@
 
 # Simple seesaw test using an LED attached to Pin 5 and a button on pin 2
 #
-# See the seesaw Learn Guide for wiring details:
+# See the seesaw Learn Guide for wiring details.
+# For SAMD09:
 # https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
+# For ATtiny8x7:
+# https://learn.adafruit.com/adafruit-attiny817-seesaw/digital-input
 
 import time
 import board
 import digitalio
 from adafruit_seesaw.seesaw import Seesaw
 from adafruit_seesaw.digitalio import DigitalIO
 
-i2c_bus = board.I2C()
-ss = Seesaw(i2c_bus)
+ss = Seesaw(board.I2C())
 
 button_pin = 2
 led_pin = 5

examples/seesaw_eeprom_test.py

@@ -4,9 +4,6 @@
 # Simple seesaw test reading and writing the internal EEPROM
 # The ATtiny8xx series has a true 128 byte EEPROM, the SAMD09 mimics it in flash with 64 bytes
 # THE LAST BYTE IS USED FOR I2C ADDRESS CHANGE!
-#
-# See the seesaw Learn Guide for wiring details:
-# https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
 
 import time
 import board
@@ -15,14 +12,14 @@
 i2c_bus = board.I2C()
 ss = seesaw.Seesaw(i2c_bus)
 
-val = ss.eeprom_read8(0x02)  # read from address 2
-print("Read 0x%02x from EEPROM address 0x02" % val)
+value = ss.eeprom_read8(0x02)  # Read from address 2
+print("Read 0x%02x from EEPROM address 0x02" % value)
 
-print("Incremening value")
-ss.eeprom_write8(0x02, val + 1)
+print("Incrementing value")
+ss.eeprom_write8(0x02, (value + 1) % 0xFF)
 
-val = ss.eeprom_read8(0x02)  # read from address 2
-print("Second read 0x%02x from EEPROM address 0x02" % val)
+value = ss.eeprom_read8(0x02)  # Read from address 2
+print("Second read 0x%02x from EEPROM address 0x02" % value)
 
 while True:
     # Do not write EEPROM in a loop, it has 100k cycle life

examples/seesaw_neopixel_test.py

@@ -4,29 +4,31 @@
 # Simple seesaw test writing NeoPixels
 # Can use any valid GPIO pin, up to 60 pixels!
 #
-# See the seesaw Learn Guide for wiring details:
+# See the seesaw Learn Guide for wiring details.
+# For SAMD09:
 # https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
+# For ATtiny8x7:
+# https://learn.adafruit.com/adafruit-attiny817-seesaw/neopixel
 
 import time
 import board
 from rainbowio import colorwheel
 from adafruit_seesaw import seesaw, neopixel
 
-i2c_bus = board.I2C()
-ss = seesaw.Seesaw(i2c_bus)
+ss = seesaw.Seesaw(board.I2C())
+
+NEOPIXEL_PIN = 19  # Can be any pin
+NEOPIXEL_NUM = 12  # No more than 60 pixels!
 
-NEOPIXEL_PIN = 6  # change to any pin
-NEOPIXEL_NUM = 30  # no more than 60!
 pixels = neopixel.NeoPixel(ss, NEOPIXEL_PIN, NEOPIXEL_NUM)
-pixels.brightness = 0.3  # not so brite!
+pixels.brightness = 0.3  # Not so bright!
 
-color_offset = 0  # start at red
+color_offset = 0  # Start at red
 
-# cycle through all colors along the strip
+# Cycle through all colors along the ring
 while True:
     for i in range(NEOPIXEL_NUM):
         rc_index = (i * 256 // NEOPIXEL_NUM) + color_offset
         pixels[i] = colorwheel(rc_index & 255)
-    pixels.show()
     color_offset += 1
     time.sleep(0.01)

examples/seesaw_pwmout_test.py

@@ -5,21 +5,28 @@
 # On the SAMD09 breakout these are pins 5, 6, and 7
 # On the ATtiny8x7 breakout these are pins 0, 1, 9, 12, 13
 #
-# See the seesaw Learn Guide for wiring details:
+# See the seesaw Learn Guide for wiring details.
+# For SAMD09:
 # https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
+# For ATtiny8x7:
+# https://learn.adafruit.com/adafruit-attiny817-seesaw/pwmout
 
 import time
 import board
 from adafruit_seesaw import seesaw, pwmout
 
-i2c_bus = board.I2C()
-ss = seesaw.Seesaw(i2c_bus)
+ss = seesaw.Seesaw(board.I2C())
 
-PWM_PIN = 9  # change to a valid PWM output!
-pwm = pwmout.PWMOut(ss, PWM_PIN)
+PWM_PIN = 12  # If desired, change to any valid PWM output!
+led = pwmout.PWMOut(ss, PWM_PIN)
 
+delay = 0.01
 while True:
-    # the API PWM range is 0 to 65535, but we increment by 256 since our
+    # The API PWM range is 0 to 65535, but we increment by 256 since our
     # resolution is often only 8 bits underneath
-    pwm.duty_cycle = (pwm.duty_cycle + 256) % 65536
-    time.sleep(0.01)
+    for cycle in range(0, 65535, 256):  #
+        led.duty_cycle = cycle
+        time.sleep(delay)
+    for cycle in range(65534, 0, -256):
+        led.duty_cycle = cycle
+        time.sleep(delay)