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Drivers: Iss #2 fix SPI bus problem on ESP32.

ili9341
Peter Hinch 2020-05-23 16:42:10 +01:00
rodzic 630810de0d
commit 23db6c337b
4 zmienionych plików z 25 dodań i 4 usunięć
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7
drivers/ssd1331/ssd1331.py
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@ -49,6 +49,11 @@
import framebuf import framebuf
import utime import utime
import gc import gc
import sys
# https://github.com/peterhinch/micropython-nano-gui/issues/2
# The ESP32 does not work reliably in SPI mode 1,1. Waveforms look correct.
# Keep 0,0 on STM as testing was done in that mode.
_bs = 0 if sys.platform == 'esp32' else 1 # SPI bus state
class SSD1331(framebuf.FrameBuffer): class SSD1331(framebuf.FrameBuffer):
# Convert r, g, b in range 0-255 to an 8 bit colour value # Convert r, g, b in range 0-255 to an 8 bit colour value
@ -80,7 +85,7 @@ class SSD1331(framebuf.FrameBuffer):
self.show() self.show()
def _write(self, buf, dc): def _write(self, buf, dc):
self.spi.init(baudrate=self.rate, polarity=1, phase=1) self.spi.init(baudrate=self.rate, polarity=_bs, phase=_bs)
self.pincs(1) self.pincs(1)
self.pindc(dc) self.pindc(dc)
self.pincs(0) self.pincs(0)

7
drivers/ssd1331/ssd1331_16bit.py
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@ -49,6 +49,11 @@
import framebuf import framebuf
import utime import utime
import gc import gc
import sys
# https://github.com/peterhinch/micropython-nano-gui/issues/2
# The ESP32 does not work reliably in SPI mode 1,1. Waveforms look correct.
# Keep 0,0 on STM as testing was done in that mode.
_bs = 0 if sys.platform == 'esp32' else 1 # SPI bus state
class SSD1331(framebuf.FrameBuffer): class SSD1331(framebuf.FrameBuffer):
# Convert r, g, b in range 0-255 to a 16 bit colour value RGB565 # Convert r, g, b in range 0-255 to a 16 bit colour value RGB565
@ -80,7 +85,7 @@ class SSD1331(framebuf.FrameBuffer):
self.show() self.show()
def _write(self, buf, dc): def _write(self, buf, dc):
self.spi.init(baudrate=self.rate, polarity=1, phase=1) self.spi.init(baudrate=self.rate, polarity=_bs, phase=_bs)
self.pincs(1) self.pincs(1)
self.pindc(dc) self.pindc(dc)
self.pincs(0) self.pincs(0)

7
drivers/ssd1351/ssd1351_16bit.py
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@ -34,6 +34,11 @@ import utime
import gc import gc
import micropython import micropython
from uctypes import addressof from uctypes import addressof
import sys
# https://github.com/peterhinch/micropython-nano-gui/issues/2
# The ESP32 does not work reliably in SPI mode 1,1. Waveforms look correct.
# Keep 0,0 on STM as testing was done in that mode.
_bs = 0 if sys.platform == 'esp32' else 1 # SPI bus state
# Initialisation commands in cmd_init: # Initialisation commands in cmd_init:
# 0xfd, 0x12, 0xfd, 0xb1, # Unlock command mode # 0xfd, 0x12, 0xfd, 0xb1, # Unlock command mode
@ -93,7 +98,7 @@ class SSD1351(framebuf.FrameBuffer):
gc.collect() gc.collect()
def _write(self, mv, dc): def _write(self, mv, dc):
self.spi.init(baudrate=self.rate, polarity=1, phase=1) self.spi.init(baudrate=self.rate, polarity=_bs, phase=_bs)
self.pincs(1) self.pincs(1)
self.pindc(dc) self.pindc(dc)
self.pincs(0) self.pincs(0)

8
drivers/ssd1351/ssd1351_generic.py
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@ -36,6 +36,12 @@ import gc
import micropython import micropython
from uctypes import addressof from uctypes import addressof
import sys
# https://github.com/peterhinch/micropython-nano-gui/issues/2
# The ESP32 does not work reliably in SPI mode 1,1. Waveforms look correct.
# Keep 0,0 on STM as testing was done in that mode.
_bs = 0 if sys.platform == 'esp32' else 1 # SPI bus state
# Timings with standard emitter # Timings with standard emitter
# 1.86ms * 128 lines = 240ms. copy dominates: show() took 272ms # 1.86ms * 128 lines = 240ms. copy dominates: show() took 272ms
# Buffer transfer time = 272-240 = 32ms which accords with expected: # Buffer transfer time = 272-240 = 32ms which accords with expected:
@ -108,7 +114,7 @@ class SSD1351(framebuf.FrameBuffer):
self.show() self.show()
def _write(self, buf, dc): def _write(self, buf, dc):
self.spi.init(baudrate=self.rate, polarity=1, phase=1) self.spi.init(baudrate=self.rate, polarity=_bs, phase=_bs)
self.pincs(1) self.pincs(1)
self.pindc(dc) self.pindc(dc)
self.pincs(0) self.pincs(0)