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Add 0.42" Screen Compatibility #36

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Merged
merged 3 commits into from
Jan 20, 2020
Merged

Add 0.42" Screen Compatibility #36

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4303387
add 0.42 screen (72x40) compatibility
TinyCircuits Dec 30, 2019
4c6817c
Add compatibility 0.42in screens 72x40
TinyCircuits Dec 30, 2019
e935e6c
fix compatibility
TinyCircuits Dec 30, 2019
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9 changes: 8 additions & 1 deletion adafruit_ssd1306.py
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Original file line number Diff line number Diff line change
Expand Up @@ -99,7 +99,7 @@ def init_display(self):
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_COM_PIN_CFG, 0x02 if self.height == 32 or self.height == 16 else 0x12,
# timing and driving scheme
SET_DISP_CLK_DIV, 0x80,
SET_PRECHARGE, 0x22 if self.external_vcc else 0xf1,
Expand All @@ -112,6 +112,9 @@ def init_display(self):
SET_CHARGE_PUMP, 0x10 if self.external_vcc else 0x14,
SET_DISP | 0x01): # on
self.write_cmd(cmd)
if self.width == 72:
self.write_cmd(0xAD)
self.write_cmd(0x30)
self.fill(0)
self.show()

Expand Down Expand Up @@ -157,6 +160,10 @@ def show(self):
# displays with width of 64 pixels are shifted by 32
xpos0 += 32
xpos1 += 32
if self.width == 72:
# displays with width of 72 pixels are shifted by 28
xpos0 += 28
xpos1 += 28
self.write_cmd(SET_COL_ADDR)
self.write_cmd(xpos0)
self.write_cmd(xpos1)
Expand Down