stm32 printf 移植

STMCU小助手 · 2022-12-16T05:00:00+00:00

根据MDK获知IAR选择即可，把他定义在main.c的main函数前面 4 l+ g! z3 s" [4 z0 B* r! B; Q . ?" y6 J( b% G. P ; k% v5 y0 E8 }$ \#if 0 //IAR printf USE- X8 y! z3 F7 B #ifdef __GNUC__) I/ I; P6 w5 V #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)+ t% ^' j6 @. C; L1 H, y #else6 e/ |8 Y3 N1 s# N" O #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)1 W' C) @: V7 r6 W #endif) m* I. c; R3 f PUTCHAR_PROTOTYPE & L. x0 H" M F: O9 g' U8 y{ 2 N# C$ L$ d' w. h0 z2 Q% _' wHAL_UART_Transmit(&huart1 , (uint8_t *)&ch, 1, 100);" h+ D1 i' R' Y2 { return ch;0 L$ m2 t# r/ n3 _1 L4 D } t/ [5 ]9 D3 g4 w+ n6 G#endif 3 e. ?) D4 L" C% ^ k. j$ T; m5 \0 f; M3 G6 A9 y8 N: G8 d4 Z$ V# _/ A ) C" [* t1 y M( G+ A& P#if 1 //MDK printf USE( G }* r8 K% l6 C5 Z2 R #pragma import (__use_no_semihosting) : M- h% R7 N% b/ r+ w3 V7 ^" Astruct __FILE 4 n. p6 R. m1 F0 s( r{ ) t, {8 p* F0 \4 Z f3 \0 Z4 @ int handle; ! H: t8 b* Z' H8 L& v% o};9 F; C, X/ O4 ^; f8 a FILE __stdout; * U* v8 o$ w# J7 o4 a6 d Vvoid _sys_exit(int x)' `8 g- V/ T% g4 j { ! X! O6 b, _4 ]; ]9 I x=x; ' R: [# B) _- j, X9 H} " N0 Y/ M2 U5 u: |& j- i9 fint fputc(int ch, FILE *f)+ {2 F" j1 c( o! k* i2 u/ e5 `6 R {7 r/ {0 O% J$ Z" u3 C; Q) \' P //while((USART1->SR&0x40)==0); 6 b0 g" Y a2 A+ `" W //USART1->DR = (uint8_t) ch;! s6 K- U5 i7 D HAL_UART_Transmit(&huart1 , (uint8_t *)&ch, 1, 100); 5 q3 m: ]! k% Y/ l return ch; 7 c0 ]; B5 q$ W) {}4 O/ O$ j; O! T+ m #endif! W$ N- [/ C) y 8 r) M9 |/ ?: E V- a' \ w 5 R& F2 b. Y0 U; l5 t3 x$ J4 ~8 z* A 如果用错有可能出现程序不运行的情况，debug要点几次才运行的情况; w. J7 @, e' @ ———————————————— ! M- W/ u' i# p6 B6 w* i4 J版权声明：鱼入大海_. q$ T; |3 W% T; z% v3 v ( m6 c1 a' L+ i: T9 A% C4 V

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STMCU小助手发布时间：2022-12-16 13:00

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文章简介:	stm32 printf 移植

根据MDK获知IAR选择即可，把他定义在main.c的main函数前面

#if 0 //IAR printf USE
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif
PUTCHAR_PROTOTYPE
{
HAL_UART_Transmit(&huart1 , (uint8_t *)&ch, 1, 100);
return ch;
}
#endif

#if 1 //MDK printf USE
#pragma import (__use_no_semihosting)
struct __FILE
{
int handle;
};
FILE __stdout;
void _sys_exit(int x)
{
x=x;
}
int fputc(int ch, FILE *f)
{
//while((USART1->SR&0x40)==0);
//USART1->DR = (uint8_t) ch;
HAL_UART_Transmit(&huart1 , (uint8_t *)&ch, 1, 100);
return ch;
}
#endif

如果用错有可能出现程序不运行的情况，debug要点几次才运行的情况
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版权声明：鱼入大海_