lock ********
vol 1
ip 75.144.20.99
title Spoon Feed the 6809
base r.1708054046000_29T
user phoenix

.

* /imagefile  -o  PXL_20231213_072053248.jpg
* /file blink_pico_led.py


/box(
/section How to use micropython.schedule effectively

https://forum.micropython.org/viewtopic.php?t=8745

/pre(
from pyb import Timer
import micropython
import time
def cb(arg):  # Scheduled callback
    print(arg)

def cb1(tim):  # Hard IRQ
    micropython.schedule(cb, 'Timer 1')
def cb2(tim):
    micropython.schedule(cb, 'Timer 2')
t1 = Timer(1, freq=1.1, callback=cb1)
t2 = Timer(2, freq=1, callback=cb2)
/pre)
/box)
* /file send_reset_vector.py

/b Cartridge PCB example:
https://github.com/JayesonLS/TandyCircuitsAndLogic/blob/master/CoCoProtoBoard/CoCoProtoBoard.png

/b Coco Motherboards:
https://github.com/qbancoffee/coco_motherboards

/box(
halt/, E, A0, A1

/imagefile -L Screenshot_20240213-144727.png

halt/, E, A0, A3 (?)

/imagefile -L Screenshot_20240213-151612.png

/pre(
]strick9: So that's the pic I wanted with fetching the reset vector after reset/ rises then halt/ rises
[2:57 PM]strick9: programmed the delay in MicroPython GPIO (not PIO)

import time
from time import sleep

import machine
from machine import Pin

Led = Pin("LED", Pin.OUT)
Halt = Pin(13, Pin.OUT)
Slenb = Pin(14, Pin.OUT)
Dir = Pin(15, Pin.OUT)
ResetN = Pin(8, Pin.IN)
EClock = Pin(9, Pin.IN)
WriteC = Pin(10, Pin.IN)
WriteD = Pin(11, Pin.IN)
ReadD = Pin(12, Pin.IN)


Led.value(1)
Halt.value(0)
Slenb.value(0)
Dir.value(1)

while True:
    while ResetN.value() == 0: pass
    print("^", end="")
    sleep(0.9)
    Halt.value(0)
    while ResetN.value() != 0: pass
    print("v", end="")
    Halt.value(1)
    sleep(0.2)

/pre)

[2:59 PM]strick9: Scope will trigger on rise in Halt:    Type Dropout, Source Ch1=yellow, Slope Rising,  OverTIme Type Edge,  Time 2ns


/box)


/b Spoonfeeder
/box(
https://github.com/strickyak/spoonfeeder


* /file step1-sends-reset-vector.py
* /file mimic2.py
/box)


* /file zip-2024-01-29a.zip
* /file gerbers_tuesday.zip
* /file r11-2023-01-30-B.zip
* /file copico-2024-02-07_185757.zip
* /file copico-2024-02-08_015334.zip
* /file copico_Gerbers_20240208_090800Z.zip
* /file send_reset_vector.py
* /file blink_halt.py
* /imagefile Screenshot_20240213-144727.png
* /imagefile Screenshot_20240213-151612.png
* /file step1-sends-reset-vector.py
* /file mimic2.py
* /file spoonfeed_poc.py
* /file thomas-step2.py
* /file respond-to-ff7a-aard