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drivers/display/ssd1306: update SSD1306_SPI to work with new API 

Makes it work on the ESP8266.
This commit is contained in:
Radomir Dopieralski 2016-05-22 22:50:38 +02:00 committed by Damien George
parent ddadbaed06
commit 43c8f545d2
1 changed files with 20 additions and 11 deletions
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31
drivers/display/ssd1306.py
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@ -3,6 +3,7 @@
import time
import framebuf
# register definitions
SET_CONTRAST = const(0x81)
SET_ENTIRE_ON = const(0xa4)
@ -22,6 +23,7 @@ SET_PRECHARGE = const(0xd9)
SET_VCOM_DESEL = const(0xdb)
SET_CHARGE_PUMP = const(0x8d)
class SSD1306:
def __init__(self, height, external_vcc):
self.width = 128
@ -91,6 +93,7 @@ class SSD1306:
def text(self, string, x, y, col=1):
self.framebuf.text(string, x, y, col)
class SSD1306_I2C(SSD1306):
def __init__(self, height, i2c, addr=0x3c, external_vcc=False):
self.i2c = i2c
@ -114,27 +117,34 @@ class SSD1306_I2C(SSD1306):
def poweron(self):
pass
# TODO convert this class to use the new hardware API
class SSD1306_SPI(SSD1306):
def __init__(self, height, spi, dc, res, cs=None, external_vcc=False):
rate = 10 * 1024 * 1024
spi.init(spi.MASTER, baudrate=rate, polarity=0, phase=0)
dc.init(dc.OUT, dc.PULL_NONE, value=0)
res.init(res.OUT, dc.PULL_NONE, value=0)
if cs is not None:
cs.init(cs.OUT, cs.PULL_NONE, value=0)
def __init__(self, height, spi, dc, res, cs, external_vcc=False):
self.rate = 10 * 1024 * 1024
dc.init(dc.OUT, value=0)
res.init(res.OUT, value=0)
cs.init(cs.OUT, value=1)
self.spi = spi
self.dc = dc
self.res = res
self.cs = cs
super().__init__(height, external_vcc)
def write_cmd(self, cmd):
self.spi.init(baudrate=self.rate, polarity=0, phase=0)
self.cs.high()
self.dc.low()
self.spi.send(cmd)
self.cs.low()
self.spi.write(bytearray([cmd]))
self.cs.high()
def write_data(self, buf):
self.spi.init(baudrate=self.rate, polarity=0, phase=0)
self.cs.high()
self.dc.high()
self.spi.send(buf)
self.cs.low()
self.spi.write(buf)
self.cs.high()
def poweron(self):
self.res.high()
@ -142,4 +152,3 @@ class SSD1306_SPI(SSD1306):
self.res.low()
time.sleep_ms(10)
self.res.high()
time.sleep_ms(10)