Using GET '/update?api_key' command returns endless 'G' or 'E' | ESP Wi-Fi | Forum

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Using GET '/update?api_key' command returns endless 'G' or 'E'
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December 14, 2019
4:03 pm
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December 14, 2019
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i'm trying to send data to thingspeak using ESP8266 and STM32F407. When can i send data using these code snippet:
sprintf(my_data,"GET /update?api_key=T03IS546SB86K74J&field1=%d
",10); //this is not my original key 🙂 10 is arbitrary number.
HAL_UART_Transmit(&huart2, (uint8_t *)my_data,strlen(my_data), 500);
i see that endless 'G' in my buffer.

And when i can't send data using same command above i see that endless 'E' in my buffer. What does 'G' or 'E' mean?

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