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gpios.py
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gpios.py
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#!/usr/bin/env python3
#############################################################################
################## Helper Library for GPIO handling #########################
#############################################################################
#
# Copyright (C) 2018-2019 by Alexander Nagy - https://bitekmindenhol.blog.hu/
#
import Settings
import os
import time
import lib.lib_syspwm as syspwm
try:
import linux_os as OS
except:
print("Linux OS functions can not be imported!")
try:
import RPi.GPIO as GPIO
except:
print("RPi.GPIO not installed!")
try:
import smbus
except:
print("I2C smbus not installed!")
PINOUT40 = [
{"ID":0,
"BCM":-1,
"name":["None"],
"canchange":2,
"altfunc": 0},
{"ID":1,
"BCM":-1,
"name":["3V3"],
"canchange":0,
"altfunc": 0},
{"ID":2,
"BCM":-1,
"name":["5V"],
"canchange":0,
"altfunc": 0},
{"ID":3,
"BCM":2,
"name":["GPIO2","I2C1-SDA"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":4,
"BCM":-1,
"name":["5V"],
"canchange":0,
"altfunc": 0},
{"ID":5,
"BCM":3,
"name":["GPIO3","I2C1-SCL"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":6,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":7,
"BCM":4,
"name":["GPIO4"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":8,
"BCM":14,
"name":["GPIO14","UART-TX","BT-TX"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":9,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":10,
"BCM":15,
"name":["GPIO15","UART-RX","BT-RX"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":11,
"BCM":17,
"name":["GPIO17","SPI1-CE1"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":12,
"BCM":18,
"name":["GPIO18/PWM0","SPI1-CE0","PCM-CLK"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":13,
"BCM":27,
"name":["GPIO27"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":14,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":15,
"BCM":22,
"name":["GPIO22"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":16,
"BCM":23,
"name":["GPIO23"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":17,
"BCM":-1,
"name":["3V3"],
"canchange":0,
"altfunc": 0},
{"ID":18,
"BCM":24,
"name":["GPIO24"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":19,
"BCM":10,
"name":["GPIO10","SPI0-MOSI"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":20,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":21,
"BCM":9,
"name":["GPIO9","SPI0-MISO"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":22,
"BCM":25,
"name":["GPIO25"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":23,
"BCM":11,
"name":["GPIO11","SPI0-SCLK"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":24,
"BCM":8,
"name":["GPIO8","SPI0-CE0"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":25,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":26,
"BCM":7,
"name":["GPIO7","SPI0-CE1"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":27,
"BCM":0,
"name":["ID_SD"],
"canchange":0,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":28,
"BCM":1,
"name":["ID_SC"],
"canchange":0,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":29,
"BCM":5,
"name":["GPIO5"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":30,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":31,
"BCM":6,
"name":["GPIO6"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":32,
"BCM":12,
"name":["GPIO12/PWM0"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":33,
"BCM":13,
"name":["GPIO13/PWM1"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":34,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":35,
"BCM":19,
"name":["GPIO19/PWM1","SPI1-MISO","PCM-FS"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":36,
"BCM":16,
"name":["GPIO16","SPI1-CE2"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":37,
"BCM":26,
"name":["GPIO26"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":38,
"BCM":20,
"name":["GPIO20","SPI1-MOSI","PCM-DIN"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":39,
"BCM":-1,
"name":["GND"],
"canchange":0,
"altfunc": 0},
{"ID":40,
"BCM":21,
"name":["GPIO21","SPI1-SCLK","PCM-DOUT"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1}
]
PINOUT26R2_DELTA = [
{"ID":11,
"BCM":17,
"name":["GPIO17"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":12,
"BCM":18,
"name":["GPIO18/PWM0"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1}
]
PINOUT26R1_DELTA = [
{"ID":3,
"BCM":0,
"name":["GPIO0","I2C0-SDA"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":5,
"BCM":1,
"name":["GPIO1","I2C0-SCL"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":11,
"BCM":17,
"name":["GPIO17"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":12,
"BCM":18,
"name":["GPIO18/PWM0"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
{"ID":13,
"BCM":21,
"name":["GPIO21"],
"canchange":1,
"altfunc": 0,
"startupstate":-1,
"actualstate":-1},
]
I2CDevices = [
{"name": "MCP9808 Temp sensor",
"addr": [0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F]},
{"name": "Chirp! Water sensor",
"addr": [0x20]},
{"name": "MCP23008/MCP23017 I2C GPIO expander; LCD1602; PCF8574",
"addr": [0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27]},
{"name": "PCF8574A",
"addr": [0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F]},
{"name": "PN532",
"addr": [0x24]},
{"name": "VL53L0x",
"addr": [0x29]},
{"name": "VL6180X ToF sensor",
"addr": [0x29]},
{"name": "TSL2561 light sensor",
"addr": [0x29,0x39,0x49]},
{"name": "APDS-9960 IR/Color/Proximity Sensor",
"addr": [0x39]},
{"name": "SSD1305/SSD1306 monochrome OLED",
"addr": [0x3C,0x3D]},
{"name": "HTU21D-F/Si7021 Humidity/Temp sensor",
"addr": [0x40]},
{"name": "INA219 Current sensor",
"addr": [0x40,0x41,0x44,0x45]},
{"name": "PCA9685 PWM extender",
"addr": [0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x71,0x72,0x73,0x74,0x75,0x76,0x77]},
{"name": "SHT30/31/35 Humidity/Temp sensor",
"addr": [0x44,0x45]},
{"name": "PN532 NFC/RFID reader",
"addr": [0x48]},
{"name": "ADS1115/ADS1015 4-channel ADC",
"addr": [0x48,0x49,0x4A,0x4B]},
{"name": "LM75A; PCF8591; MCP3221",
"addr": [0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F]},
{"name": "MAX44009 ambient light sensor",
"addr": [0x4A]},
{"name": "BH1750",
"addr": [0x23,0x5C]},
{"name": "MPR121 touch sensor",
"addr": [0x5a,0x5b,0x5c,0x5d]},
{"name": "DHT12/AM2320",
"addr": [0x5C]},
{"name": "MCP4725 DAC",
"addr": [0x60,0x61]},
{"name": "DS1307/DS3231/PCF8523 RTC",
"addr": [0x68]},
{"name": "PCA9685 'All Call'",
"addr": [0x70]},
{"name": "BMP085/BMP180 Temp/Barometric",
"addr": [0x77]},
{"name": "HT16K33",
"addr": [0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77]},
{"name": "BMP280 Temp/Barometric;BME180 Temp/Barometric/Humidity",
"addr": [0x76,0x77]},
{"name": "ProMini Extender (standard)",
"addr": [0x3F,0x4F,0x5F,0x6F]},
{"name": "ProMini Extender (non-standard)",
"addr": [0x7F]}
]
try:
BOTH=GPIO.BOTH
RISING=GPIO.RISING
FALLING=GPIO.FALLING
except:
BOTH=3
RISING=1
FALLING=2
class hwports:
config_file_name = "/boot/config.txt" # /boot/config.txt
CONFIG_ENABLE_I2C="dtparam=i2c_arm=on"
CONFIG_ENABLE_I2C0="dtparam=i2c0=on"
CONFIG_ENABLE_I2C1="dtparam=i2c1=on"
CONFIG_ENABLE_SPI0="dtparam=spi=on"
CONFIG_ENABLE_SPI1_1="dtoverlay=spi1-1cs"
CONFIG_ENABLE_SPI1_2="dtoverlay=spi1-2cs"
CONFIG_ENABLE_SPI1_3="dtoverlay=spi1-3cs"
CONFIG_ENABLE_I2S="dtparams=i2s=on"
CONFIG_DISABLE_UART="enable_uart=0" #0/1
CONFIG_ENABLE_UART="enable_uart=1"
CONFIG_DISABLE_UART2="dtparam=uart0=off"
CONFIG_BT_SWUART="dtoverlay=pi3-miniuart-bt"
CONFIG_DISABLE_BT="dtoverlay=pi3-disable-bt"
CONFIG_DISABLE_WIFI="dtoverlay=pi3-disable-wifi"
CONFIG_PWM0="dtoverlay=pwm"
CONFIG_PWM0_1="dtoverlay=pwm-2chan"
CONFIG_ENABLE_AUDIO="dtparam=audio=on" #on/off
CONFIG_DISABLE_AUDIO="dtparam=audio=off" #on/off
CONFIG_ONEWIRE="dtoverlay=w1-gpio"
CONFIG_GPIO="gpio="
CONFIG_GPUMEM="gpu_mem"
COMMAND_DISABLE_BT="sudo systemctl disable hciuart"
CONFIG_ENABLE_RTC="dtoverlay=i2c-rtc," # ds1307, pcf8523, ds3231
def __init__(self): # general init
self.i2c_channels = [] # 0,1
self.i2c_initialized = False
self.i2cbus = None
self.spi_channels = [] # 0,1
self.spi_cs = [0,0]
self.serial = 0
self.bluetooth = 0 # 0:disabled,1:enabled with SW miniUART,2:enabled with HW UART
self.wifi = 0 # 0:disabled,1:enabled
self.audio = 0
self.i2s = 0
self.pwm = [0,0] # 0.byte:pwm0 pin, 1.byte:pwm1 pin, no more
self.rtc = "" # /lib/udev/hwclock-set
self.pwmo = []
for p in range(22):
self.pwmo.append({"pin":0,"o":False})
try:
rpitype = OS.getRPIVer()
except:
rpitype=[]
try:
po = rpitype["pins"]
except:
po = "0"
try:
bta = int(rpitype["bt"])
except:
bta = 0
try:
wf = int(rpitype["wlan"])
except:
wf = 0
try:
iram = rpitype["ram"]
except:
iram = "0"
try:
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
self.gpioinit = True
except:
print("GPIO init failed")
self.gpioinit = False
self.pinnum = po
self.internalwlan = (wf==1)
self.internalbt = (bta==1)
self.gpumin = 16
self.gpumax = self.gpumin
if "256m" in iram.lower():
self.gpumax = 192
elif "512m" in iram.lower():
self.gpumax = 448
elif "1m" in iram.lower():
self.gpumax = 944
self.gpumem = self.gpumin
def __del__(self):
try:
self.cleanup()
except:
pass
def cleanup(self):
if self.gpioinit:
for p in range(len(self.pwmo)):
try:
if (self.pwmo[p]["o"] != False) and not (self.pwmo[p]["o"] is None):
self.pwmo[p]["o"].stop()
except:
pass
GPIO.cleanup()
def gpio_function_name(self,func):
typestr = "Unknown"
try:
typeint = int(func)
if GPIO.IN==typeint:
typestr = "Input"
elif GPIO.OUT==typeint:
typestr = "Output"
elif GPIO.SPI==typeint:
typestr = "SPI"
elif GPIO.I2C==typeint:
typestr = "I2C"
elif GPIO.HARD_PWM==typeint:
typestr = "HardPWM"
elif GPIO.SERIAL==typeint:
typestr = "Serial"
except:
typestr = "Unknown"
return typestr
def gpio_function_name_from_pin(self,gpio):
typestr = "Unknown"
try:
pinnum = int(gpio)
if pinnum>0:
typeint = GPIO.gpio_function(pinnum)
typestr = gpio_function_name(typeint)
except:
typestr = "Unknown"
return typestr
def gpio_function(self,bcmpin):
return GPIO.gpio_function(bcmpin)
def input(self,bcmpin):
return GPIO.input(bcmpin)
def output(self,pin,value,Force=False):
if Force:
for b in range(len(Settings.Pinout)):
if str(Settings.Pinout[b]["BCM"])==str(pin).strip():
if Settings.Pinout[b]["altfunc"] == 0 and Settings.Pinout[b]["canchange"]==1:
if Settings.Pinout[b]["startupstate"]<4:
self.setpinstate(b,4)
break
return GPIO.output(pin,value)
def add_event_detect(self,pin, detection, pcallback,pbouncetime=0):
for b in range(len(Settings.Pinout)):
if str(Settings.Pinout[b]["BCM"])==str(pin).strip():
if Settings.Pinout[b]["altfunc"] == 0 and Settings.Pinout[b]["canchange"]==1:
if Settings.Pinout[b]["startupstate"]<4:
self.setpinstate(b,Settings.Pinout[b]["startupstate"])
else:
pass # i am lazy and not sure if is it can happen anyday...
break
if pbouncetime==0:
GPIO.add_event_detect(pin,detection,callback=pcallback)
else:
GPIO.add_event_detect(pin,detection,callback=pcallback,bouncetime=pbouncetime)
def remove_event_detect(self,pin):
GPIO.remove_event_detect(pin)
def i2c_init(self):
if self.i2c_initialized == False:
if self.is_i2c_usable(1):
self.i2cbus = smbus.SMBus(1)
self.i2c_initialized = True
elif self.is_i2c_usable(0):
self.i2cbus = smbus.SMBus(0)
self.i2c_initialized = True
return self.i2c_initialized
def i2c_read_block(self,address,cmd):
retval = None
if self.i2c_initialized:
try:
retval = self.i2cbus.read_i2c_block_data(address,cmd)
except:
retval = None
return retval
def is_i2c_usable(self,channel):
result = False
if channel==0:
if self.pinnum=="26R1":
result = True
else:
if self.pinnum=="26R2" or self.pinnum=="40":
result = True
return result
def is_i2c_enabled(self,channel):
if channel in self.i2c_channels:
return True
else:
return False
def enable_i2c(self,channel):
if self.is_i2c_usable(channel) and (self.is_i2c_enabled(channel)==False):
self.i2c_channels.append(channel)
Settings.Pinout[3]["altfunc"] = 1
Settings.Pinout[5]["altfunc"] = 1
def disable_i2c(self,channel):
if self.is_i2c_enabled(channel):
self.i2c_channels.remove(channel)
Settings.Pinout[3]["altfunc"] = 0
Settings.Pinout[5]["altfunc"] = 0
def is_spi_usable(self,channel):
result = False
try:
channel = int(channel)
except:
return False
if channel==0:
if str(self.pinnum)=="26R1" or str(self.pinnum)=="26R2" or str(self.pinnum)=="40":
result = True
else:
if str(self.pinnum)=="40":
result = True
return result
def is_spi_enabled(self,channel):
if channel in self.spi_channels:
return True
else:
return False
def enable_spi(self,channel,cs=3): # cs can 1,2,3 for spi1, 2 for spi0
try:
channel=int(channel)
cs=int(cs)
except:
return False
if self.is_spi_usable(channel):
if (self.is_spi_enabled(channel)==False):
self.spi_channels.append(channel)
if channel==0:
self.spi_cs[0] = 2
Settings.Pinout[19]["altfunc"] = 1
Settings.Pinout[21]["altfunc"] = 1
Settings.Pinout[23]["altfunc"] = 1
Settings.Pinout[24]["altfunc"] = 1
Settings.Pinout[26]["altfunc"] = 1
else:
self.spi_cs[1] = int(cs)
Settings.Pinout[35]["altfunc"] = 1
Settings.Pinout[38]["altfunc"] = 1
Settings.Pinout[40]["altfunc"] = 1
Settings.Pinout[12]["altfunc"] = 1
Settings.Pinout[11]["altfunc"] = 0
Settings.Pinout[36]["altfunc"] = 0
if self.spi_cs[1]>1:
Settings.Pinout[11]["altfunc"] = 1
if self.spi_cs[1]>2:
Settings.Pinout[36]["altfunc"] = 1
def disable_spi(self,channel):
try:
channel=int(channel)
except:
return False
if self.is_spi_enabled(channel):
self.spi_channels.remove(channel)
if channel==0:
Settings.Pinout[19]["altfunc"] = 0
Settings.Pinout[21]["altfunc"] = 0
Settings.Pinout[23]["altfunc"] = 0
Settings.Pinout[24]["altfunc"] = 0
Settings.Pinout[26]["altfunc"] = 0
else:
if Settings.Pinout[12]["altfunc"] == 1:
Settings.Pinout[35]["altfunc"] = 0
Settings.Pinout[38]["altfunc"] = 0
Settings.Pinout[40]["altfunc"] = 0
Settings.Pinout[12]["altfunc"] = 0
Settings.Pinout[11]["altfunc"] = 0
Settings.Pinout[36]["altfunc"] = 0
def is_serial_enabled(self):
return (self.serial==1)
def set_serial(self,status):
if (status==0) or (status==False):
self.serial = 0
if Settings.Pinout[8]["altfunc"]==1 or self.bluetooth==0:
Settings.Pinout[8]["altfunc"] = 0
Settings.Pinout[10]["altfunc"] = 0
else:
self.serial = 1
Settings.Pinout[8]["altfunc"] = 1
Settings.Pinout[10]["altfunc"] = 1
def is_internal_bt_usable(self):
return self.internalbt
def get_internal_bt_level(self):
return self.bluetooth
def set_internal_bt(self,uartlevel): #1=sw,2=hw
if self.is_internal_bt_usable():
self.bluetooth=uartlevel
if uartlevel>1:
Settings.Pinout[8]["altfunc"] = 2
Settings.Pinout[10]["altfunc"] = 2
else:
if Settings.Pinout[8]["altfunc"]==2:
if self.serial==1:
Settings.Pinout[8]["altfunc"] = 1
Settings.Pinout[10]["altfunc"] = 1
else:
Settings.Pinout[8]["altfunc"] = 0
Settings.Pinout[10]["altfunc"] = 0
elif self.serial ==0:
Settings.Pinout[8]["altfunc"] = 0
Settings.Pinout[10]["altfunc"] = 0
else:
self.bluetooth=0
def is_audio_enabled(self):
return (self.audio==1)
def is_internal_wifi_usable(self):
return self.internalwlan
def set_wifi(self,status):
self.wifi = 0
if self.is_internal_wifi_usable():
if (status==1) or (status==True):
self.wifi = 1
def is_wifi_enabled(self):
return (self.wifi==1)
def set_audio(self,status):
if (status==0) or (status==False):
self.audio = 0
else:
self.audio = 1
def is_audio_enabled(self):
return (self.audio==1)
def enable_pwm_pin(self,channel,pin,FirstRead=False):
if channel>=0 and channel<=1:
pid = 0
for p in range(len(Settings.Pinout)):
if int(Settings.Pinout[p]["BCM"])==int(pin):
pid = p
break
pch = "PWM"+str(channel)
if (Settings.Pinout[pid]["altfunc"] == 0) and (pch in Settings.Pinout[pid]["name"][0]):
if self.pwm[channel] > 0 and pin != self.pwm[channel]:
for p in range(len(Settings.Pinout)):
if int(Settings.Pinout[p]["BCM"])==int(self.pwm[channel]) and int(Settings.Pinout[p]["startupstate"])==7:
Settings.Pinout[p]["startupstate"] = -1
break
self.pwm[channel]=pin
Settings.Pinout[pid]["startupstate"] = 7 # set to H-PWM
if FirstRead:
Settings.Pinout[pid]["actualstate"]=Settings.Pinout[pid]["startupstate"]
try:
if channel==0:
self.pwmo[0]["o"] = syspwm.HPWM(0)
self.pwmo[0]["pin"] = pin
else:
self.pwmo[1]["o"] = syspwm.HPWM(1)
self.pwmo[1]["pin"] = pin
except Exception as e:
print(e)
def disable_pwm_pin(self,channel):
if channel>=0 and channel<=1:
if self.pwm[channel] > 0:
for p in range(len(Settings.Pinout)):
if int(Settings.Pinout[p]["BCM"])==int(self.pwm[channel]) and int(Settings.Pinout[p]["startupstate"])==7:
Settings.Pinout[p]["startupstate"] = -1
break
self.pwm[channel]=0
try:
if channel==0:
if self.pwmo[0]["o"]:
self.pwmo[0]["o"].stop()
else:
if self.pwmo[1]["o"]:
self.pwmo[1]["o"].stop()
except:
pass
def output_pwm(self,bcmpin,pprop,pfreq=1000): # default 1000Hz
pin = int(bcmpin)
prop = int(pprop)
freq = int(pfreq)
if pin in self.pwm: # hardpwm
pid = 0
if self.pwm[0] == pin:
pid = 0
else:
pid = 1
if prop<=0:
self.pwmo[pid]["o"].stop()
else:
self.pwmo[pid]["pin"]=pin
self.pwmo[pid]["o"].set_frequency(freq)
self.pwmo[pid]["o"].set_duty_prop(prop)
self.pwmo[pid]["o"].enable()
return True
else: # softpwm
pfound = False
for p in range(len(Settings.Pinout)):
if int(Settings.Pinout[p]["BCM"])==pin :
if (int(Settings.Pinout[p]["startupstate"]) not in [4,5,6]):
return False # if not output skip
if len(self.pwmo)>2:
for p in range(2,len(self.pwmo)):
if int(self.pwmo[p]["pin"])==pin:
if (self.pwmo[p]["o"]):
if prop<=0:
self.pwmo[p]["o"].stop()
else:
self.pwmo[p]["o"].start(prop)
self.pwmo[p]["o"].ChangeFrequency(freq)
self.pwmo[p]["o"].ChangeDutyCycle(prop)
pfound = True
break
if pfound==False:
self.pwmo[p]["pin"] = pin
self.pwmo[p]["o"] = GPIO.PWM(pin,freq)
self.pwmo[p]["o"].start(prop)
return True
def pwm_get_func(self,pin):
func = 0
if pin==12 or pin==13:
func=4
elif pin==18 or pin==19:
func=2
return str(func)
def is_i2s_usable(self):
result = False
if self.pinnum=="40":
result = True
return result
def set_i2s(self,state):
if self.is_i2s_usable():
if state==1 or state==True:
self.i2s=1
if self.is_spi_enabled(1):
self.disable_spi(1) # collision resolving
Settings.Pinout[12]["altfunc"] = 2
Settings.Pinout[35]["altfunc"] = 2
Settings.Pinout[38]["altfunc"] = 2
Settings.Pinout[40]["altfunc"] = 2
else:
self.i2s=0
if Settings.Pinout[12]["altfunc"]==2:
Settings.Pinout[12]["altfunc"] = 0
Settings.Pinout[35]["altfunc"] = 0
Settings.Pinout[38]["altfunc"] = 0
Settings.Pinout[40]["altfunc"] = 0
def set1wgpio(self,bcmpin,FirstRead=False):
for b in range(len(Settings.Pinout)):
if str(Settings.Pinout[b]["BCM"])==str(bcmpin).strip():
if Settings.Pinout[b]["altfunc"] == 0 and Settings.Pinout[b]["canchange"]==1:
Settings.Pinout[b]["startupstate"] = 8
if FirstRead:
Settings.Pinout[b]["actualstate"]=Settings.Pinout[b]["startupstate"]
break
def setpinstartstate(self,bcmpin,state):
for b in range(len(Settings.Pinout)):
if str(Settings.Pinout[b]["BCM"])==str(bcmpin).strip():
if Settings.Pinout[b]["altfunc"] == 0 and Settings.Pinout[b]["canchange"]==1:
self.setpinstate(b,state,True)
break
def setpinactualstate(self,pinid,state):
if Settings.Pinout[pinid]["actualstate"]==7:
bcmpin = int(Settings.Pinout[pinid]["BCM"])
if bcmpin == self.pwm[0]:
self.disable_pwm_pin(0)
elif bcmpin == self.pwm[1]:
self.disable_pwm_pin(1)
if Settings.Pinout[pinid]["actualstate"]<7 and state<7:
Settings.Pinout[pinid]["actualstate"]=state
def setpinstate(self,PINID,state,force=False):
if (force==False):
if Settings.Pinout[PINID]["altfunc"]>0 or Settings.Pinout[PINID]["canchange"]!=1 or Settings.Pinout[PINID]["BCM"]<0:
return False
# if (int(state)<=0 and int(Settings.Pinout[PINID]["startupstate"])>0):
if int(state)<=0:
# pass # revert to default input
Settings.Pinout[PINID]["startupstate"] = -1
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.IN)
self.setpinactualstate(PINID,99) # ugly hack
return True
elif state==1:
pass # input
Settings.Pinout[PINID]["startupstate"] = state
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.IN)
self.setpinactualstate(PINID,1)
return True
elif state==2:
pass # input pulldown
Settings.Pinout[PINID]["startupstate"] = state
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
self.setpinactualstate(PINID,state)
return True
elif state==3:
pass # input pullup
Settings.Pinout[PINID]["startupstate"] = state
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.IN, pull_up_down=GPIO.PUD_UP)
self.setpinactualstate(PINID,state)
return True
elif state==4 or state==5 or state==6:
if state==5:
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.OUT, initial=GPIO.LOW)
elif state==6:
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.OUT, initial=GPIO.HIGH)
else:
if self.gpioinit:
GPIO.setup(int(Settings.Pinout[PINID]["BCM"]), GPIO.OUT)
Settings.Pinout[PINID]["startupstate"] = state
self.setpinactualstate(PINID,4)
return True
elif state==7:
self.enable_pwm_pin(0,int(Settings.Pinout[PINID]["BCM"]))
if Settings.Pinout[PINID]["startupstate"] != 7:
self.enable_pwm_pin(1,int(Settings.Pinout[PINID]["BCM"]))
return True
elif state==8:
self.setpinactualstate(PINID,-1)
self.set1wgpio(int(Settings.Pinout[PINID]["BCM"]))
return True
return False
def initpinstates(self):
if self.gpioinit:
for b in range(len(Settings.Pinout)):
if Settings.Pinout[b]["altfunc"] == 0 and Settings.Pinout[b]["canchange"]==1:
if int(Settings.Pinout[b]["BCM"])>=0:
if int(Settings.Pinout[b]["startupstate"])<7 and int(Settings.Pinout[b]["startupstate"])>=0:
self.setpinstate(b,Settings.Pinout[b]["startupstate"],True)
def readconfig(self):
self.i2c_channels = [] # 0,1
self.spi_channels = [] # 0,1
self.spi_cs = [0,0]
self.set_serial(1)
self.i2s = 0
if self.internalbt:
self.bluetooth = 2
if self.internalwlan:
self.wifi = 1
self.audio = 1
self.pwm = [0,0] # 0.byte:pwm0 pin, 1.byte:pwm1 pin, no more
# read config.txt
try:
with open(self.config_file_name) as f:
for line in f:
line = line.strip()
if len(line)>0 and line[0] == "#":
line = ""
if self.CONFIG_ENABLE_I2C in line.lower():
if self.is_i2c_usable(1):
self.enable_i2c(1)
else:
self.enable_i2c(0)
elif self.CONFIG_ENABLE_I2C0 in line.lower():
self.enable_i2c(0)
elif self.CONFIG_ENABLE_I2C1 in line.lower():
self.enable_i2c(1)
elif self.CONFIG_ENABLE_SPI0 in line.lower():