stm32库里面有定义\x0d\x0a\x0d\x0atypedef signed __int64 int64_t;\x0d\x0atypedef unsigned __int64 uint64_t;\x0d\x0a所以你要定义64位变量直接用int64_t或者uint64_t定义就行，一个是有符号，一个是无符号
stm32库里面有定义 typedef signed __int64 int64_t;typedef unsigned __int64 uint64_t;所以你要定义64位变量直接用int64_t或者uint64_t定义就行，一个是有符号，一个是无符号
typedef signed __int64 int64_t; /* exact-width unsigned integer types */ typedef unsigned char uint8_t; typedef unsigned short int uint16_t; typedef unsigned int uint32_t; typedef unsigned __int64 uint64_t; typedef int32_t s32; typedef int16_t s16; typedef int8_t s8; typedef uint...
stm32库里面有定义 typedef signed __int64 int64_t;typedef unsigned __int64 uint64_t;所以你要定义64位变量直接用int64_t或者uint64_t定义就行，一个是有符号，一个是无符号
int64_t result; result= ((rectime-oritime) + (tratime-destime))/2; 当((rectime-oritime) + (tratime-destime))是负数的时候,result不能得到正确的数,需要写成如下: uint64_t destime, oritime, rectime, tratime; int64_t result, tmp; ...
typedef unsigned int uint32_t; typedef unsigned __int64 uint64_t; typedef int32_t s32; typedef int16_t s16; typedef int8_t s8; typedef uint32_t u32; typedef uint16_t u16; typedef uint8_t u8; 还有float int编译器中不能看到其定义(估计已编译了)。
int8_t : typedef signed char; uint8_t : typedef unsigned char; int16_t : typedef signed short ; uint16_t : typedef unsigned short ; int32_t : typedef signed int; uint32_t :typedef unsigned int; int64_t : typedef signed long ...
exact-width signed integer types */typedefsignedcharint8_t;typedefsignedshortintint16_t;typedefsignedintint32_t;typedefsigned__INT64int64_t;/* exact-width unsigned integer types */typedefunsignedcharuint8_t;typedefunsignedshortintuint16_t;typedefunsignedintuint32_t;typedefunsigned__INT64uint64_t; ...
学C语言得当时候老师应该有说过，int在不同的编译器所占的字节是不同的，比如TC int就是2字节，VC就是4字节。STM32是32位机，int占4字节。typedef signed __int64 int64_t; 从字面上就能理解意思，long int。 __int64是宏或者typedef定义过的符号 ...
typedef unsigned __int64 uint64_t; typedef int32_t s32; typedef int16_t s16; typedef int8_t s8; typedef uint32_t u32; typedef uint16_t u16; typedef uint8_t u8; 还有float int编译器中不能看到其定义(估计已编译了)。 因此在STM32编程中,常用的数据类型有:char(字符型),u8,u16,u32,但...