commit cf44bc80f404fc62ec66ee29d980fb925d402338 Author: Nils Schulte Date: Wed Mar 18 11:47:19 2020 +0100 init diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..3356db8 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +wifi-credentials +.uploaded +uP-cheatsheet \ No newline at end of file diff --git a/DS3231.py b/DS3231.py new file mode 100644 index 0000000..ec9a56c --- /dev/null +++ b/DS3231.py @@ -0,0 +1,158 @@ +''' + DS3231 RTC drive + + Author: shaoziyang + Date: 2018.3 + + http://www.micropython.org.cn +''' +from machine import I2C, Pin + +DS3231_I2C_ADDR = (0x68) +DS3231_REG_SEC = (0x00) +DS3231_REG_MIN = (0x01) +DS3231_REG_HOUR = (0x02) +DS3231_REG_WEEKDAY= (0x03) +DS3231_REG_DAY = (0x04) +DS3231_REG_MONTH = (0x05) +DS3231_REG_YEAR = (0x06) +DS3231_REG_A1SEC = (0x07) +DS3231_REG_A1MIN = (0x08) +DS3231_REG_A1HOUR = (0x09) +DS3231_REG_A1DAY = (0x0A) +DS3231_REG_A2MIN = (0x0B) +DS3231_REG_A2HOUR = (0x0C) +DS3231_REG_A2DAY = (0x0D) +DS3231_REG_CTRL = (0x0E) +DS3231_REG_STA = (0x0F) +DS3231_REG_AGOFF = (0x10) +DS3231_REG_TEMP = (0x11) + +PER_DISABLE = (0) +PER_MINUTE = (1) +PER_HOUR = (2) +PER_DAY = (3) +PER_WEEKDAY = (4) +PER_MONTH = (5) + +class DS3231(): + def __init__(self, i2c): + self.i2c = i2c + self.setReg(DS3231_REG_CTRL, 0x4C) + + def DecToHex(self, dat): + return (dat//10) * 16 + (dat%10) + + def HexToDec(self, dat): + return (dat//16) * 10 + (dat%16) + + def setReg(self, reg, dat): + self.i2c.writeto(DS3231_I2C_ADDR, bytearray([reg, dat])) + + def getReg(self, reg): + self.i2c.writeto(DS3231_I2C_ADDR, bytearray([reg])) + return self.i2c.readfrom(DS3231_I2C_ADDR, 1)[0] + + def Second(self, second = None): + if second == None: + return self.HexToDec(self.getReg(DS3231_REG_SEC)) + else: + self.setReg(DS3231_REG_SEC, self.DecToHex(second%60)) + + def Minute(self, minute = None): + if minute == None: + return self.HexToDec(self.getReg(DS3231_REG_MIN)) + else: + self.setReg(DS3231_REG_MIN, self.DecToHex(minute%60)) + + def Hour(self, hour = None): + if hour == None: + return self.HexToDec(self.getReg(DS3231_REG_HOUR)) + else: + self.setReg(DS3231_REG_HOUR, self.DecToHex(hour%24)) + + def Weekday(self, weekday = None): + if weekday == None: + return self.HexToDec(self.getReg(DS3231_REG_WEEKDAY)) + else: + self.setReg(DS3231_REG_WEEKDAY, self.DecToHex(weekday%8)) + + def Day(self, day = None): + if day == None: + return self.HexToDec(self.getReg(DS3231_REG_DAY)) + else: + self.setReg(DS3231_REG_DAY, self.DecToHex(day%32)) + + def Month(self, month = None): + if month == None: + return self.HexToDec(self.getReg(DS3231_REG_MONTH)) + else: + self.setReg(DS3231_REG_MONTH, self.DecToHex(month%13)) + + def Year(self, year = None): + if year == None: + return self.HexToDec(self.getReg(DS3231_REG_YEAR)) + 2000 + else: + self.setReg(DS3231_REG_YEAR, self.DecToHex(year%100)) + + def Date(self, dat = None): + if dat == None: + return [self.Year(), self.Month(), self.Day()] + else: + self.Year(dat[0]%100) + self.Month(dat[1]%13) + self.Day(dat[2]%32) + + def Time(self, dat = None): + if dat == None: + return [self.Hour(), self.Minute(), self.Second()] + else: + self.Hour(dat[0]%24) + self.Minute(dat[1]%60) + self.Second(dat[2]%60) + + def DateTime(self, dat = None): + if dat == None: + return self.Date() + [self.Weekday()] + self.Time() + else: + self.Year(dat[0]) + self.Month(dat[1]) + self.Day(dat[2]) + self.Weekday(dat[3]) + self.Hour(dat[4]) + self.Minute(dat[5]) + self.Second(dat[6]) + + def ALARM(self, day, hour, minute, repeat): + IE = self.getReg(DS3231_REG_CTRL) + if repeat == PER_DISABLE: + self.setReg(DS3231_REG_CTRL, IE & 0xFC) # disable ALARM OUT + return + IE |= 0x46 + self.setReg(DS3231_REG_CTRL, IE) + M2 = M3 = M4 = 0x80 + DT = 0 + if repeat == PER_MINUTE: + pass + elif repeat == PER_HOUR: + M2 = 0 + elif repeat == PER_DAY: + M2 = M3 = 0 + else: + M2 = M3 = M4 = 0 + if repeat == PER_WEEKDAY: + DT = 0x40 + self.setReg(DS3231_REG_A2MIN, self.DecToHex(minute%60)|M2) + self.setReg(DS3231_REG_A2HOUR, self.DecToHex(hour%24)|M3) + self.setReg(DS3231_REG_A2DAY, self.DecToHex(day%32)|M4|DT) + + def ClearALARM(self): + self.setReg(DS3231_REG_STA, 0) + + def Temperature(self): + t1 = self.getReg(DS3231_REG_TEMP) + t2 = self.getReg(DS3231_REG_TEMP + 1) + if t1>0x7F: + return t1 - t2/256 -256 + else: + return t1 + t2/256 diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..53d1f3d --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,675 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/README.md b/README.md new file mode 100644 index 0000000..7669757 --- /dev/null +++ b/README.md @@ -0,0 +1,27 @@ +# A clock made out of 2 stepper motors + +This clock is made out of 2 nema 17 stepper motors. The motors are most definitely overkill, but its easy to build and this way you can control both clock-hands (? ... called Uhrzeiger in german ;) ). + + +Controller is a ESP32 (NodeMCU 32S) programmed with micropython. The time source is a DS3231 as the clock should work without a network connection (so no NTP sync for now). + +## Pinout + +Pin (ESP32)| Function +--- | --- +17 | i2c SDA (DS3231) +18 | i2c SCL (DS3231) +12,27,26,25 | Stepper for hour +19,21,22,23 | Stepper for minute +15 | capacitive touch button +36,39,34 | Button-Input +32,33,13 | Button-LEDs +2,4,16 | Free GPIO +35 | Free GPInput + +## Reference + +[L298M H-Bridge](https://www.instructables.com/id/Control-DC-and-stepper-motors-with-L298N-Dual-Moto/) +[DS3231 RTC](https://github.com/micropython-Chinese-Community/mpy-lib/tree/master/misc/DS3231) +[NodeMCU-32S Pinout](https://www.shenzhen2u.com/NodeMCU-32S) +[ESP32 Usable Pins](https://randomnerdtutorials.com/esp32-pinout-reference-gpios/) diff --git a/StepperClock.py b/StepperClock.py new file mode 100644 index 0000000..a761336 --- /dev/null +++ b/StepperClock.py @@ -0,0 +1,25 @@ +import StepperL298M +import time +class StepperClock: + def __init__(self,stepperHour,stepperMin): + self._stepperMinute = stepperMin + self._stepperHour = stepperHour + + def update(self): + hour = time.localtime()[3] + minute = time.localtime()[4] + self._stepperHour.rotateTo(hour/60) + self._stepperMinute.rotateTo(minute/60) + self._stepperHour.update() + self._stepperMinute.update() + + def waitForStillstand(self): + while not (self._stepperHour.isAtTarget() or self._stepperMinute.isAtTarget()): + self._stepperHour.update() + self._stepperMinute.update() + time.sleep(0.1) + + def disablePower(self): + self._stepperHour.disablePower() + self._stepperMinute.disablePower() + #self._stepperHour.disablePower() diff --git a/StepperL298M.py b/StepperL298M.py new file mode 100644 index 0000000..294c785 --- /dev/null +++ b/StepperL298M.py @@ -0,0 +1,54 @@ +from machine import Pin +import time +stepping = [[1,0,1,0],[1,0,0,0],[1,0,0,1],[0,0,0,1],[0,1,0,1],[0,1,0,0],[0,1,1,0],[0,0,1,0]] + +class Stepper: + def __init__(self,pins,stepsPerRev=400): + self._pins = [Pin(p, Pin.OUT) for p in pins] + self.stepnum = 0 + self.rotDirection = 1 + self.rotTarget = 0 + self.stepDuration = 0.05 + self._lastStepTime = time.time() + self.stepsPerRev=stepsPerRev + + def _setPins(self,level): + self._pins[0].value(level[0]) + self._pins[1].value(level[1]) + self._pins[2].value(level[2]) + self._pins[3].value(level[3]) + + def doSteppsBlock(self,num,speed=0.05): + for i in range(num): + self.stepnum = (self.stepnum + 1) + self._setPins(stepping[self.stepnum%8]) + time.sleep(speed) + self.disablePower() + + def rotateTo(self, target,direction=0): + """sets the rotation target and (if direction == 0) calculates if + it should rotate left or right""" + self.rotTarget = int(target*self.stepsPerRev) % self.stepsPerRev + if (direction == 0): + self.rotDirection = 1 if (self.stepnum- self.rotTarget)%self.stepsPerRev \ + > self.stepsPerRev/2 else 0 + else: + self.rotDirection = direction + + def update(self): + if (self.rotTarget%self.stepsPerRev != self.stepnum%self.stepsPerRev) \ + and not self.isMoving(): + self._lastStepTime = time.ticks_ms() + self.stepnum = (self.stepnum + self.rotDirection) % self.stepsPerRev + self._setPins(stepping[self.stepnum%8]) + #time.sleep(speed) + + def disablePower(self): + self._setPins([0,0,0,0]) + + def isMoving(self): + return time.ticks_diff(time.ticks_ms(), self._lastStepTime) <= self.stepDuration + + def isAtTarget(self): + return (not self.isMoving()) \ + and (self.rotTarget%self.stepsPerRev == self.stepnum%self.stepsPerRev) diff --git a/boot.py b/boot.py new file mode 100644 index 0000000..d739e66 --- /dev/null +++ b/boot.py @@ -0,0 +1,14 @@ +import network +import webrepl + +webrepl.start() + +sta_if = network.WLAN(network.STA_IF); +sta_if.active(True) + +#load wifi credentials from file +with open("wifi-credentials","r") as f: + ssid = f.readline().replace("\n","") + password = f.readline().replace("\n","") + +sta_if.connect(ssid,password) diff --git a/main.py b/main.py new file mode 100644 index 0000000..c4db509 --- /dev/null +++ b/main.py @@ -0,0 +1,24 @@ +import time +import machine +import DS3231 + +dsRtc = DS3231.DS3231(machine.I2C(sda = machine.Pin(17), scl=machine.Pin(18))) + +rtc = machine.RTC() +rtc.init(dsRtc.DateTime()+[0]) +#while(True): +# print(rtc.DateTime()) +# time.sleep(0.1) +# pass +#import StepperL298M +#import StepperClock +#stepperminu = StepperL298M.Stepper([12,27,26,25],stepsPerRev=408) +#stepperhour = StepperL298M.Stepper([19,21,22,23]) + +#clock = StepperClock.StepperClock(stepperhour,stepperminu) + +#while(True): +# clock.update() +# clock.waitForStillstand() +# clock.disablePower() +# time.sleep(0.1) diff --git a/upload.sh b/upload.sh new file mode 100755 index 0000000..bd8dc11 --- /dev/null +++ b/upload.sh @@ -0,0 +1,17 @@ +#!/bin/bash +md5files=$(cat .uploaded) + +IP=192.168.222.40 +if [ "$#" != 0 ]; then + IP="$1" +fi + +for i in $(ls *.py) +do + if [[ $md5files != *"$(md5sum $i | cut -d' ' -f1)"* ]]; then + echo $(md5sum $i) + webrepl_cli.py -p asdf $i $IP:/$i + md5files=$(echo $md5files | sed 's|:\([^:]*\)'"$i"'||g'):$(md5sum "$i") + echo "$md5files" > .uploaded + fi +done diff --git a/usb-repl.sh b/usb-repl.sh new file mode 100755 index 0000000..008f2eb --- /dev/null +++ b/usb-repl.sh @@ -0,0 +1,2 @@ +#!/bin/sh +picocom -b 115200 /dev/ttyUSB0