...

• behavior:
  • minimal program
  • start handler immediately, and print out a message at regular interval showing current time in ms
• pre-requisite:
  • none
• concepts:
  • IO_Control
    • begin
    • execute
    • enableScheduler
    • isSchedulerTimeEvent(_status)
  • use "DeclareHandlerBegin" and "DeclareHandlerEnd" for declare a handler function
  • enable scheduler with handler function for repeated execution
  • handler cannot start at t=0 (usually t=86 due to setup and other overhead)
• Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-iocontrol_serialout

iocontrol_serialout_fsm1

• behavior:
  • modified from iocontrol_serialout
  • implement a FSM (finite state machine) to control sequential printing of messages
• pre-requisite:
  • iocontrol_serialout
• concepts:
  • add a variable for state, count from 0 to 2 and goes back to 0 again
  • use switch statement
  • effect of "interval" on duration for each state
  • prepare for complex case of finite state machine
  Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-

iocontrol_serialout_

...

fsm2

• behavior

...

iocontrol_serialout_fsm2

• behavior:
  • repeat the print sequence in iocontrol_serialout_fsm1 for a number of times
• pre-requisite:
  • iocontrol_serialout_fsm1
• concepts:
  • extended from iocontrol_serialout
  • add another variable to control repeat count

...

• behavior:
  • read in characters from Serial monitor and display in the handler
• pre-requisite:
  • iocontrol_serialout
• concepts:
  • Serial
    • available
    • readStringUntil
  • String and its functions
  • if ... else ...
  • boolean expression
  Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-iocontrol_serialin

binout_timedwrite

• behavior:
  • turn on GPIO 12 at 1000ms and turn off at 2000ms
• pre-requisite:
  • iocontrol_serialout
• concepts:
  • BinOutControl
    • init
    • enableScheduler
    • read
    • write
  • PinMgr
    • request
  • basic steps to allocate resource for a pin
  • handler for BinOutControl
    • write HIGH after onTimeMS, and LOW after offTimeMS
• Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-binout_timedwrite

binout_serialin_timedwrite

binout_serialin_timedwrite

• behavior:
  • parse input from Serial Monitor to
  behavior:
  • parse input from Serial Monitor to control when to turn on LED at GPIO12 and duration
  • two formats:
    • <duration>
    • <relative start time>,<duration>
  • with checking of input message from Serial Monitor
    • reject if comma at start, or more than one comma
  • <duration> = 1000 may not have any observable change due to turn around time of serial communication being too long
• pre-requisite:
  • binout_timedwrite
  • iocontrol_serialin
• concepts:
  • String
    • indexOf
    • substring
    • toInt
• Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-binout_timedwrite

binout_play_oneseq

binout_play_oneseq

•  behavior:
  • playback a sequence on IO12
   behavior:
  • playback a sequence on IO12 using GPIO output, at t=2000ms after reset, for 2 times
• pre-requisite:
  • binout_timedwrite
• concepts:
  • BinOutControl
    • playRelTime
    • isXXX(_status) - relating to sequence
  •  BinOutSequence
    • addSetState( duration, state)
•  extension
  • play sequence for one time and two times to illustrate difference between "OneSeqEnded" and "AllSeqEnded"
  Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-

binout_play_

...

binout_play_altseq

• behavior:
  • playback two sequences alternatively on IO12, using GPIO output
• pre-requisite:
  • binout_play_oneseq
  • iocontrol_serialout_fsm1
  • iocontrol_serialout_fsm2
• concepts:
  • BinOutControl.playRelTime in handler
  • use finite state machine concept
  • use "isAllSeqEnded()"
  Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-binout_play_altseq

binout_serialin_playseq_immed

• behavior:
  • play sequence immediately according to input from Serial monitor
  • two inputs:
    • 0 - start playing sequence 0 immediately
    • 1 - start playing sequence 1 immediately
• pre-requisite:
  • binout_play_oneseq
  • binout_play_altseq
• concepts
  • BinOutControl.playRelTime invoke in handler
  • String::equals
• Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-binout_serialin_playseq_immed

binout_serialin_playseq_follow

binout_serialin_playseq_follow

• behavior:
  • play sequence AFTER
  behavior:
  • play sequence AFTER current sequence finished playback, according to input from Serial monitor
  • modified from binout_serialin_playseq_immed
• pre-requisite:
  • binout_serialin_playseq_immed
• concepts:
  • BinOutControl.isPlaying
  • BinOutControl.isAllSeqEnded
  • add "nextSeqIndex" to remember which sequence to play next
  Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-binout_serialin_playseq_follow

binin_changetime

•  behavior:
  • detect change of BOOT button (IO09) and report time of change and state AFTER change
• pre-requisite
  • iocontrol_serialout
• concepts:
  • BinInControl
    • init - pin and input mode
    • enableScheduler
    • enableInterrupt - RISING, FALLING, CHANGE, HIGH, LOW
    • isBinInTriggered
    • getInterruptTime
    • getInterruptState
  Refer to https://www.designandmake.org/pages/viewpage.action?pageId=232799560#Lecture3:ComputingSystemsandProgramming-binIn_changetime

adc_read

• circuit:
  • Use 2-axis joystick as in https://lastminuteengineers.com/joystick-interfacing-arduino-processing/
  • Connections

    • 2-axis joystick	ESP32C3
      VRx	IO00
      VRy	IO01
      GND	GND
      +5V	3.3V

• behavior:
  • joystick analog outputs connect to IO00 and IO01 respectively
  • read analog outputs every 100ms and outputs on Serial Monitor
• pre-requisite:
  • iocontrol_serialout
• concepts
  • ADCControl
    • init - adc_index (must be 1), pin index (must be 0 to 4)
    • read
    • getMaxValue

...