STM32duino: Serial Seiral1 etc RXBuffer size

[caixf]

I using STM32duino to program the STM32F103C8T6. When I use the Seiral1 to communicate with a 4G, the data reveived exceeds 64 characters, data will lost. By using modify the following #defines, it does not working. I am appreciated if somebody could help. The folowing test prgram file is as following:

#define SERIAL_RX_BUFFER_SIZE 1024

#include <Arduino.h>

char str[] = "config,netchaninfo,ok,tcp,uart,0,0,00,60,47.192.1.114,22004,0,,0,,0,,0,0";

char *endptr;

uint8_t uxBuffer[256] = {0};

uint16_t uxLen = 0;

uint8_t timeout = 20;

uint8_t ux = 0;

long long x64 = 869020060303565;

long long x64_1 = 0;

void setup()

{

    Serial.begin(115200);

    delay(5000);

    //int x = SERIAL_TX_BUFFER_SIZE;

    Serial.printf("SERIAL TX BUFFER SIZE = %d\n", SERIAL_TX_BUFFER_SIZE);

    Serial.printf("%s\n", str);

    Serial.printf("size of str = %d\n", sizeof(str));

}

void loop()

{

    if ( Serial.available())

    {

        ux++;

        if ( ux > timeout)

        {

            uxLen = Serial.available();

            Serial.printf("string len = %d\n", uxLen);

            ux = 0;

            for ( int i = 0; i < uxLen; i++)

            {

                uxBuffer[i] = Serial.read();

            }

        }

    }

}

[Pavel A.]

Here you can find help and advice on your project.

[Andrew Neil]

Please see How to insert source code.

 

---

@caixf wrote:

I using STM32duino

---

Then this is the place to post: https://www.stm32duino.com/

Maybe also in the Arduino forums: https://forum.arduino.cc/

 

Note that these forums will also have requirements for posting source code to keep it legible.

 

[caixf]

@Andrew Neil 

Thank you for your information.

[UnderGnd]

When you define in the sketch file (.ino) it is not defined globally as it is converted as a .cpp file.

To properly redefine the 

SERIAL_RX_BUFFER_SIZE

you have to create a file named build_opt.h and add:

-DSERIAL_RX_BUFFER_SIZE=1024

Like this is properly redefined globally.

See the wiki for more information.

https://github.com/stm32duino/Arduino_Core_STM32/wiki/Customize-build-options-using-build_opt.h#examples-of-file-content