Just curious if anyone has come across this issue. I can’t seem to convert a float to a string. My test code is below. I am running with PlatformIO with the latest updates. If I run the same code in Arduino IDE, it works fine. Trying to understand why it is failing when it tries to convert pi to a string.
Hardware = Teensy3.6
#include <arduino.h>
int main()
{
// Rates: 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, or 115200
Serial.begin(9600);
int value1 = -12345;
int value2 = 9876;
float pi = 3.141596;
char buffer[32];
int copied = 0;
while (true)
{
memset(buffer, 0x00, sizeof(buffer));
copied = snprintf(buffer, sizeof(buffer), "%d", value1);
Serial.print("copied: ");
Serial.println(copied);
Serial.print("buffer: ");
Serial.println(buffer);
memset(buffer, 0x00, sizeof(buffer));
copied = snprintf(buffer, sizeof(buffer), "%d", value2);
Serial.print("copied: ");
Serial.println(copied);
Serial.print("buffer: ");
Serial.println(buffer);
memset(buffer, 0x00, sizeof(buffer));
copied = snprintf(buffer, sizeof(buffer), "%.4f", pi);
Serial.print("copied: ");
Serial.println(copied);
Serial.print("buffer: ");
Serial.println(buffer);
delay(5000);
}
return 0;
}
Output:
copied: 6
buffer: -12345
copied: 4
buffer: 9876
copied: 0
buffer:
I tried using a template ostringstream method as well. It it crashes on ss << Number when the number is a float.
Code:
template std::string to_string(const T& Number)
{
std::ostringstream ss;
ss << Number;
return ss.str();
}