sprintf函数太大,在STM8上面根本不敢用,动不动就.text overflow。为了将采集的数值通过串口上传到计算机,只能自己写了一个浮点数转换成字符串的函数:
#include #include static char table[]={'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}; void num2char(char *str, double number, uint8_t g, uint8_t l) { uint8_t i; int temp = number/1; double t2 = 0.0; for (i = 1; i<=g; i++) { if (temp==0) str[g-i] = table[0]; else str[g-i] = table[temp%10]; temp = temp/10; } *(str+g) = '.'; temp = 0; t2 = number; for(i=1; i<=l; i++) { temp = t2*10; str[g+i] = table[temp%10]; t2 = t2*10; } *(str+g+l+1) = '