SIM800L HTTP POST

Q&A Forum › Category: ESP32 › SIM800L HTTP POST

NUR AZLIN AIRUL AZLIN MOHAMED ZOHDI asked 3 years ago

Hi Rui & Sara
this example of yours is extracted from the SIM800L tutorial to send data using URL encoded type in the HTTP POST.

$api_key_value = "tPmAT5Ab3j7F9";

$api_key= $sensor = $location = $value1 = $value2 = $value3 = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $api_key = test_input($_POST["api_key"]);
    if($api_key == $api_key_value) {
        $sensor = test_input($_POST["sensor"]);
        $location = test_input($_POST["location"]);
        $value1 = test_input($_POST["value1"]);
        $value2 = test_input($_POST["value2"]);
        $value3 = test_input($_POST["value3"]);

My Question: How to send in TEXT format in ESP32 and receive in PHP at the server

Question Tags: sim800 http post text php

3 Answers

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Rui Santos Staff answered 3 years ago

Hi, what do you mean send in TEXT format? I’m not sure if I understand what you are looking for…

Basically you can modify the SQL table with a new row with TEXT type content
Then in your Arduino code, you would send a string variable to that newly created database field
Finally, you need to receive in a similar variable the POST $_POST[“value1”] parameter that you are sending to from your Arduino board

Regards,
Rui

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NUR AZLIN AIRUL AZLIN MOHAMED ZOHDI answered 3 years ago

Sorry about that.
Actually, what I was looking for is to send text file with the SIM800L to the webserver, since my data is 100 rows per transaction. I managed to use your tutorial to send 1 row at a time, takes about 1.5sec per row.
I wish I could send the text file in one shot.

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Rui Santos Staff answered 3 years ago

Got it, now I know what you mean.
Unfortunately I don’t have any tutorials on that subject, but you would need to create a POST request that would send your .txt file:
https://stackoverflow.com/questions/68115055/how-to-post-multipart-form-data-file-and-text-from-esp32-to-a-server
That link should help