diff options
Diffstat (limited to 'drivers/display/ssd1306.py')
| -rw-r--r-- | drivers/display/ssd1306.py | 79 |
1 files changed, 45 insertions, 34 deletions
diff --git a/drivers/display/ssd1306.py b/drivers/display/ssd1306.py index f93a451e8..4893b2045 100644 --- a/drivers/display/ssd1306.py +++ b/drivers/display/ssd1306.py @@ -5,23 +5,23 @@ import framebuf # register definitions -SET_CONTRAST = const(0x81) -SET_ENTIRE_ON = const(0xa4) -SET_NORM_INV = const(0xa6) -SET_DISP = const(0xae) -SET_MEM_ADDR = const(0x20) -SET_COL_ADDR = const(0x21) -SET_PAGE_ADDR = const(0x22) +SET_CONTRAST = const(0x81) +SET_ENTIRE_ON = const(0xA4) +SET_NORM_INV = const(0xA6) +SET_DISP = const(0xAE) +SET_MEM_ADDR = const(0x20) +SET_COL_ADDR = const(0x21) +SET_PAGE_ADDR = const(0x22) SET_DISP_START_LINE = const(0x40) -SET_SEG_REMAP = const(0xa0) -SET_MUX_RATIO = const(0xa8) -SET_COM_OUT_DIR = const(0xc0) -SET_DISP_OFFSET = const(0xd3) -SET_COM_PIN_CFG = const(0xda) -SET_DISP_CLK_DIV = const(0xd5) -SET_PRECHARGE = const(0xd9) -SET_VCOM_DESEL = const(0xdb) -SET_CHARGE_PUMP = const(0x8d) +SET_SEG_REMAP = const(0xA0) +SET_MUX_RATIO = const(0xA8) +SET_COM_OUT_DIR = const(0xC0) +SET_DISP_OFFSET = const(0xD3) +SET_COM_PIN_CFG = const(0xDA) +SET_DISP_CLK_DIV = const(0xD5) +SET_PRECHARGE = const(0xD9) +SET_VCOM_DESEL = const(0xDB) +SET_CHARGE_PUMP = const(0x8D) # Subclassing FrameBuffer provides support for graphics primitives # http://docs.micropython.org/en/latest/pyboard/library/framebuf.html @@ -37,27 +37,37 @@ class SSD1306(framebuf.FrameBuffer): def init_display(self): for cmd in ( - SET_DISP | 0x00, # off + SET_DISP | 0x00, # off # address setting - SET_MEM_ADDR, 0x00, # horizontal + SET_MEM_ADDR, + 0x00, # horizontal # resolution and layout SET_DISP_START_LINE | 0x00, - SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0 - SET_MUX_RATIO, self.height - 1, - SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0 - SET_DISP_OFFSET, 0x00, - SET_COM_PIN_CFG, 0x02 if self.height == 32 else 0x12, + SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0 + SET_MUX_RATIO, + self.height - 1, + SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0 + SET_DISP_OFFSET, + 0x00, + SET_COM_PIN_CFG, + 0x02 if self.height == 32 else 0x12, # timing and driving scheme - SET_DISP_CLK_DIV, 0x80, - SET_PRECHARGE, 0x22 if self.external_vcc else 0xf1, - SET_VCOM_DESEL, 0x30, # 0.83*Vcc + SET_DISP_CLK_DIV, + 0x80, + SET_PRECHARGE, + 0x22 if self.external_vcc else 0xF1, + SET_VCOM_DESEL, + 0x30, # 0.83*Vcc # display - SET_CONTRAST, 0xff, # maximum - SET_ENTIRE_ON, # output follows RAM contents - SET_NORM_INV, # not inverted + SET_CONTRAST, + 0xFF, # maximum + SET_ENTIRE_ON, # output follows RAM contents + SET_NORM_INV, # not inverted # charge pump - SET_CHARGE_PUMP, 0x10 if self.external_vcc else 0x14, - SET_DISP | 0x01): # on + SET_CHARGE_PUMP, + 0x10 if self.external_vcc else 0x14, + SET_DISP | 0x01, + ): # on self.write_cmd(cmd) self.fill(0) self.show() @@ -92,15 +102,15 @@ class SSD1306(framebuf.FrameBuffer): class SSD1306_I2C(SSD1306): - def __init__(self, width, height, i2c, addr=0x3c, external_vcc=False): + def __init__(self, width, height, i2c, addr=0x3C, external_vcc=False): self.i2c = i2c self.addr = addr self.temp = bytearray(2) - self.write_list = [b'\x40', None] # Co=0, D/C#=1 + self.write_list = [b"\x40", None] # Co=0, D/C#=1 super().__init__(width, height, external_vcc) def write_cmd(self, cmd): - self.temp[0] = 0x80 # Co=1, D/C#=0 + self.temp[0] = 0x80 # Co=1, D/C#=0 self.temp[1] = cmd self.i2c.writeto(self.addr, self.temp) @@ -120,6 +130,7 @@ class SSD1306_SPI(SSD1306): self.res = res self.cs = cs import time + self.res(1) time.sleep_ms(1) self.res(0) |