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Do not re-open the SPI handle on every module_init() #429

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Do not re-open the SPI handle on every module_init() #429

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12 changes: 8 additions & 4 deletions RaspberryPi_JetsonNano/python/lib/waveshare_epd/epdconfig.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ class RaspberryPi:
PWR_PIN = 18
MOSI_PIN = 10
SCLK_PIN = 11
Flag = 0

def __init__(self):
import spidev
Expand Down Expand Up @@ -139,15 +140,18 @@ def module_init(self, cleanup=False):
self.DEV_SPI.DEV_Module_Init()

else:
# SPI device, bus = 0, device = 0
self.SPI.open(0, 0)
self.SPI.max_speed_hz = 4000000
self.SPI.mode = 0b00
if self.Flag == 0:
self.Flag = 1
# SPI device, bus = 0, device = 0
self.SPI.open(0, 0)
self.SPI.max_speed_hz = 4000000
self.SPI.mode = 0b00
return 0

def module_exit(self, cleanup=False):
logger.debug("spi end")
self.SPI.close()
self.Flag = 0

self.GPIO_RST_PIN.off()
self.GPIO_DC_PIN.off()
Expand Down