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progmem array of string looping esp8266

Zorglub answered on March 17, 2023 Popularity 1/10 Helpfulness 1/10

answer progmem array of string looping esp8266

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progmem array of string looping esp8266

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const char sm00[] PROGMEM = "Write it on your heart that every day is the best day in the year.";
const char sm01[] PROGMEM = "Perfection is not attainable, but if we chase perfection we can catch excellence.";
const char sm02[] PROGMEM = "Everything you've ever wanted is on the other side of fear.";
const char sm03[] PROGMEM = "Nothing is impossible, the word itself says 'I'm possible.'";
const char sm04[] PROGMEM = "Failure is the condiment that gives success its flavor.";
const char sm05[] PROGMEM = "It is never too late to be what you might have been.";
const char sm06[] PROGMEM = "The roots of education are bitter, but the fruit is sweet.";
const char sm07[] PROGMEM = "To be the best, you must be able to handle the worst.";
const char sm08[] PROGMEM = "The key to immortality is first living a life worth remembering.";
const char sm09[] PROGMEM = "You must be the change you wish to see in the world.";
const char sm10[] PROGMEM = "Mastering others is strength. Mastering yourself is true power.";
const char sm11[] PROGMEM = "Knowing is not enough, We must apply.";
const char sm12[] PROGMEM = "We will either find a way or make one.";
const char sm13[] PROGMEM = "Man doesn't know what he is capable of until he is asked.";
const char sm14[] PROGMEM = "Be sure what you want and be sure about yourself.";
const char sm15[] PROGMEM = "With our thoughts, we make the world.";
const char sm16[] PROGMEM = "Change your life today.";
const char sm17[] PROGMEM = "Opportunities don't happen, you create them.";

const char * const msgs[] PROGMEM = { sm00, sm01, sm02, sm03, sm04, sm05, sm06, sm07, sm08,
                                      sm09, sm10, sm11, sm12, sm13, sm14, sm15, sm16, sm17
                                    };
void setup() {
  Serial.begin(250000);
  for (byte quote = 0; quote < sizeof(msgs) / sizeof(msgs[0]); quote++) {
    Serial.print(F("quote "));
    if (quote < 10) {
      Serial.write('0');
    }
    Serial.print(quote);
    Serial.print(F(" \""));
    Serial.print((__FlashStringHelper*)pgm_read_word(&msgs[quote]));
    Serial.println(F("\""));
  }
}
void loop() {}

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Source: forum.arduino.cc

Tags: esp8266 progmem whatever

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Contributed on Mar 17 2023

Zorglub

0 Answers Avg Quality 2/10

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/*
  PROGMEM string demo
  How to store a table of strings in program memory (flash),
  and retrieve them.

  Information summarized from:
  http://www.nongnu.org/avr-libc/user-manual/pgmspace.html

  Setting up a table (array) of strings in program memory is slightly complicated, but
  here is a good template to follow.

  Setting up the strings is a two-step process. First, define the strings.
*/

#include <avr/pgmspace.h>
const char string_0[] PROGMEM = "String 0"; // "String 0" etc are strings to store - change to suit.
const char string_1[] PROGMEM = "String 1";
const char string_2[] PROGMEM = "String 2";
const char string_3[] PROGMEM = "String 3";
const char string_4[] PROGMEM = "String 4";
const char string_5[] PROGMEM = "String 5";


// Then set up a table to refer to your strings.

const char *const string_table[] PROGMEM = {string_0, string_1, string_2, string_3, string_4, string_5};

char buffer[30];  // make sure this is large enough for the largest string it must hold

void setup() {
  Serial.begin(9600);
  while (!Serial);  // wait for serial port to connect. Needed for native USB
  Serial.println("OK");
}


void loop() {
  /* Using the string table in program memory requires the use of special functions to retrieve the data.
     The strcpy_P function copies a string from program space to a string in RAM ("buffer").
     Make sure your receiving string in RAM is large enough to hold whatever
     you are retrieving from program space. */


  for (int i = 0; i < 6; i++) {
    strcpy_P(buffer, (char *)pgm_read_word(&(string_table[i])));  // Necessary casts and dereferencing, just copy.
    Serial.println(buffer);
    delay(500);
  }
}

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Source: www.arduino.cc

Tags: progmem whatever esp8266

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Contributed on Mar 17 2023

Zorglub

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progmem array of string looping esp8266

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