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Resolve I2C pin conflict on Waveshare RLCD board, use SoftI2C for dynamic configurations, and add RTC/SHTC3 utilities to upload list

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This commit is contained in:
Adolfo Reyna
2026-06-17 22:51:25 -04:00
parent 82de0f328b
commit 7d61824723
4 changed files with 22 additions and 14 deletions
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lib/board_config.py
+16 -12
View File
@@ -68,11 +68,13 @@ def detect_board():
return
# 2. We are on ESP32 platform.
# Try scanning I2C(0) on Hosyond pins (SDA=16, SCL=15)
# Use SoftI2C for dynamic detection scan to avoid hardware I2C pin conflicts
from machine import SoftI2C
# Try scanning SDA=16, SCL=15 (Hosyond pins)
try:
test_i2c = I2C(0, sda=Pin(16), scl=Pin(15))
test_i2c = SoftI2C(sda=Pin(16), scl=Pin(15))
devices = test_i2c.scan()
# FT6336U touchscreen is at 0x38 on Hosyond
if 0x38 in devices:
print("Auto-detected: Hosyond ESP32-S3 Touchscreen board")
BOARD_TYPE = 'HOSYOND'
@@ -83,7 +85,8 @@ def detect_board():
has_rtc = False
led_pin = 48
i2c_bus = test_i2c
# Now initialize SoftI2C
i2c_bus = SoftI2C(sda=Pin(16), scl=Pin(15))
# Setup SPI
spi_bus = SPI(1, baudrate=40000000, polarity=0, phase=0, sck=Pin(12), mosi=Pin(11), miso=Pin(13))
@@ -114,13 +117,12 @@ def detect_board():
return
except Exception as e:
print("I2C scan on Hosyond pins failed:", e)
print("SoftI2C scan on Hosyond pins failed:", e)
# 3. Try scanning I2C(0) on Waveshare RLCD pins (SDA=13, SCL=14)
# 3. Try scanning SDA=13, SCL=14 (Waveshare RLCD pins)
try:
test_i2c = I2C(0, sda=Pin(13), scl=Pin(14))
test_i2c = SoftI2C(sda=Pin(13), scl=Pin(14))
devices = test_i2c.scan()
# SHTC3 is at 0x70, PCF85063 RTC is at 0x51
if 0x70 in devices or 0x51 in devices:
print("Auto-detected: Waveshare ESP32-S3-RLCD-4.2 board")
BOARD_TYPE = 'WAVESHARE_RLCD'
@@ -131,8 +133,6 @@ def detect_board():
has_rtc = True
led_pin = 38
i2c_bus = test_i2c
# Setup SPI
spi_bus = SPI(1, baudrate=20000000, polarity=0, phase=0, sck=Pin(11), mosi=Pin(12))
@@ -140,6 +140,9 @@ def detect_board():
import rlcd
display_instance = rlcd.RLCD(spi_bus, cs=Pin(40), dc=Pin(5), rst=Pin(41))
# Now initialize SoftI2C (after SPI/Display setup to avoid MISO pin conflict on Pin 13)
i2c_bus = SoftI2C(sda=Pin(13), scl=Pin(14))
# Audio pins & clocks configuration
audio_mclk_pin = 16
audio_mclk_freq = 12288000
@@ -155,7 +158,7 @@ def detect_board():
return
except Exception as e:
print("I2C scan on Waveshare RLCD pins failed:", e)
print("SoftI2C scan on Waveshare RLCD pins failed:", e)
# 4. Fallback default if auto-detection failed completely
print("Auto-detection failed. Falling back to Hosyond ESP32-S3 defaults...")
@@ -166,7 +169,8 @@ def detect_board():
led_pin = 48
try:
i2c_bus = I2C(0, sda=Pin(16), scl=Pin(15))
from machine import SoftI2C
i2c_bus = SoftI2C(sda=Pin(16), scl=Pin(15))
spi_bus = SPI(1, baudrate=40000000, polarity=0, phase=0, sck=Pin(12), mosi=Pin(11), miso=Pin(13))
import ili9341
display_instance = ili9341.ILI9341(spi_bus, cs=Pin(10), dc=Pin(46), bl=Pin(45), rst=None)
lib/rtc_util.py
+2 -1
View File
@@ -11,7 +11,8 @@ class PCF85063:
def __init__(self, i2c=None):
if i2c is None:
# Default to ESP32-S3-RLCD-4.2 onboard I2C pins
self.i2c = I2C(0, sda=Pin(13), scl=Pin(14))
from machine import SoftI2C
self.i2c = SoftI2C(sda=Pin(13), scl=Pin(14))
else:
self.i2c = i2c
lib/shtc3_util.py
+2 -1
View File
@@ -13,7 +13,8 @@ class SHTC3:
def __init__(self, i2c=None):
if i2c is None:
# Default to ESP32-S3-RLCD-4.2 onboard I2C pins
self.i2c = I2C(0, sda=Pin(13), scl=Pin(14))
from machine import SoftI2C
self.i2c = SoftI2C(sda=Pin(13), scl=Pin(14))
else:
self.i2c = i2c