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Z t85 si generuji na vystupech 0-4 impulzy 64us - 1024us, pri 8MHz vnitrnim citadle. Pri 1MHz citadle musim nastavit nejkratsi impuls 512us a presto je namereny vystup jen kolem tech 64us. Pri nastaveni kratsich intervalu uz prestane mereni rozlisovat a vsechny vystupy ukazuji stejnou hodnotu kolem tech 60us. Merim picem 100 hodnot v intervalech 10us. Zkousel jsem i kratsi, ale tam klesa rozlisovaci schopnost pica. Zde je vystup z konzole Thonny:

>>> %Run pico_analyzer_prubezny_sber.py
inputPin0:|||||||.....||||||....||||||......||||||.......||||||.....||||||.....|||||||....|||||||.......|||||.
inputPin1:....|||||||||..........||||||||..........|||||||||...........|||||||||||............||||||||||......
inputPin2:.......|||||||||||||||||||..................|||||||||||||||||||||....................|||||||||||||||
inputPin3:........|||||||||||||||||||||||||||||||||||||....................................|||||||||||||||||||
inputPin4:.....||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||...........................

Generator impulzu pro t85:

#define PIN_1 0
#define PIN_2 1
#define PIN_3 2
#define PIN_4 3
#define PIN_5 4

unsigned long naposled_aktivni_pin_1 = micros();
unsigned long prodleva_pin_1 = 64;
byte stav_pin_1 = LOW;

unsigned long naposled_aktivni_pin_2 = micros();
unsigned long prodleva_pin_2 = 128;
byte stav_pin_2 = LOW;

unsigned long naposled_aktivni_pin_3 = micros();
unsigned long prodleva_pin_3 = 256;
byte stav_pin_3 = LOW;

unsigned long naposled_aktivni_pin_4 = micros();
unsigned long prodleva_pin_4 = 512;
byte stav_pin_4 = LOW;

unsigned long naposled_aktivni_pin_5 = micros();
unsigned long prodleva_pin_5 = 1024;
byte stav_pin_5 = LOW;




void setup() {
  pinMode(PIN_1, OUTPUT);
  pinMode(PIN_2, OUTPUT);
  pinMode(PIN_3, OUTPUT);
  pinMode(PIN_4, OUTPUT);
  pinMode(PIN_5, OUTPUT);
}

void loop() {
  unsigned long soucasny_cas = micros();

  // Vystup 1
  if (soucasny_cas - naposled_aktivni_pin_1 > prodleva_pin_1)
  {
    if (stav_pin_1 == LOW)
    {
      stav_pin_1 = HIGH;
    }
    else
    {
      stav_pin_1 = LOW;
    }
    digitalWrite(PIN_1, stav_pin_1);
    naposled_aktivni_pin_1 = soucasny_cas;
  }

  
  // Vystup 2
  if (soucasny_cas - naposled_aktivni_pin_2 > prodleva_pin_2)
  {
    if (stav_pin_2 == LOW)
    {
      stav_pin_2 = HIGH;
    }
    else
    {
      stav_pin_2 = LOW;
    }
    digitalWrite(PIN_2, stav_pin_2);
    naposled_aktivni_pin_2 = soucasny_cas;
  }

  
  // Vystup 3
  if (soucasny_cas - naposled_aktivni_pin_3 > prodleva_pin_3)
  {
    if (stav_pin_3 == LOW)
    {
      stav_pin_3 = HIGH;
    }
    else
    {
      stav_pin_3 = LOW;
    }
    digitalWrite(PIN_3, stav_pin_3);
    naposled_aktivni_pin_3 = soucasny_cas;
  }

  
  // Vystup 4
  if (soucasny_cas - naposled_aktivni_pin_4 > prodleva_pin_4)
  {
    if (stav_pin_4 == LOW)
    {
      stav_pin_4 = HIGH;
    }
    else
    {
      stav_pin_4 = LOW;
    }
    digitalWrite(PIN_4, stav_pin_4);
    naposled_aktivni_pin_4 = soucasny_cas;
  }

  
  // Vystup 5
  if (soucasny_cas - naposled_aktivni_pin_5 > prodleva_pin_5)
  {
    if (stav_pin_5 == LOW)
    {
      stav_pin_5 = HIGH;
    }
    else
    {
      stav_pin_5 = LOW;
    }
    digitalWrite(PIN_5, stav_pin_5);
    naposled_aktivni_pin_5 = soucasny_cas;
  }

}

Merici skript pro pico:

from machine import Pin
import time


#led = Pin(25, Pin.OUT)  # setup pin 25 as an output, this is the onboard LED.
inputPin1 = Pin(11, Pin.IN, Pin.PULL_DOWN)  # setup pin 0 as an input with a pull down resistor.
inputPin2 = Pin(12, Pin.IN, Pin.PULL_DOWN)
inputPin3 = Pin(13, Pin.IN, Pin.PULL_DOWN)
inputPin4 = Pin(14, Pin.IN, Pin.PULL_DOWN)
inputPin5 = Pin(15, Pin.IN, Pin.PULL_DOWN)

#Dstore = [[0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0]]

Dstore = [[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
          [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
          [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
          [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
          [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]


#while True:  # create a loop

for i in range(0, 100):
    Dstore[0][i] = inputPin1.value()  # Read the input pin 0
    Dstore[1][i] = inputPin2.value()  # Read the input pin 1
    Dstore[2][i] = inputPin3.value()  # Read the input pin 2
    Dstore[3][i] = inputPin4.value()  # Read the input pin 3
    Dstore[4][i] = inputPin5.value()  # Read the input pin 4
    #time.sleep(1) #1Hz
    #time.sleep_ms(1000) #1Hz
    #time.sleep_us(1000000) #1Hz
    time.sleep_us(10)

    
for i in range(0, 5):  # loop to iterate through the channels
    print("inputPin{}:".format(i), end='')  # print the input pin label
    for j in range(0, 100):  # loop to iterate through the samples
        if Dstore[i][j] == 0:  # check to see if the sample is low
            print(".", end='')  # print _ if it is low
        elif Dstore[i][j] == 1:  # check to see if the sample is high
            print("|", end='')  # print - if it is high
    print()  # print a new line after each channel

#print()  # print a line in between each group of inputs

#led.toggle()  # toggle the LED so we know the code is running.

#time.sleep(1)  # delay for 1 second.

Pokud ted spustim z t85 i2c master skript, mel bych na picu namerit alespon nejake vyzvy ke komunikaci. Pokud se mi podari skloubit na picu i2c slave s tim mericim skriptem, mohl bych monitorovat i2c sbernici mezi obema cipy. Zatim jsem mel trvalou 0 na SCK a trvalou 1 na SDA.