如何将双精度值转换为uint8_t字符串[]以在atmel studio的终端窗口上打印

Question

I am trying to convert some double values to uint8_t String[] (in C) when programming in Atmel Studio 6.2 in order to use it further in function: usart_write_buffer_job .

And this is the whole command I am going to use further, but instead of characters, I would like to print the given double values on the screen:

   uint8_t string[] = "Hello World!\n";
   usart_write_buffer_job(&usart_instance, string, sizeof(string));

I have tried casting, but it does not work properly in Atmel, as it does not recognize the (uint8_t*)(&MyDoubleValue)

Answer 1

This looks like a job for snprintf :

double d;
char string[50];
snprintf(string, 50, "%f", d);