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stuff

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Benjamin Tayehanpour 2026-10-08 19:58:50 +00:00
parent 413dee8b7f
commit 46dc4764a3
2 changed files with 16 additions and 0 deletions
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12
display.py
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@ -1,12 +1,15 @@
import asyncio import asyncio
from LCD import LCD from LCD import LCD
alloc_lock = asyncio.Lock()
class display: class display:
def __init__(self, width=20, height=4, i2c_addr=0x27): def __init__(self, width=20, height=4, i2c_addr=0x27):
self.width = width self.width = width
self.height = height self.height = height
self.device = LCD(2, i2c_addr, True) self.device = LCD(2, i2c_addr, True)
self.contents = [" " * width] * self.height self.contents = [" " * width] * self.height
self.custom_char_allocations = [False] * 8
async def redraw(self, row = None): async def redraw(self, row = None):
if row == None: if row == None:
@ -15,6 +18,15 @@ class display:
else: else:
await self.device.async_message(self.contents[row - 1], row) await self.device.async_message(self.contents[row - 1], row)
async def alloc_cchar(self):
async with alloc_lock:
new_alloc = self.custom_char_allocations.index(False)
self.custom_char_allocations[new_alloc] = True
return new_alloc
async def free_cchar(self, cchar):
self.custom_char_allocations[cchar] = False
async def read(self, row): async def read(self, row):
return self.contents[row] return self.contents[row]

4
kladd/pins.txt
View file

@ -7,3 +7,7 @@ GPIO pins:
2, 3: display 2, 3: display
23, 24: misc buttons 23, 24: misc buttons
5, 6: aux serial (5 is pi->pc)
12: fan pwm