STM32键盘扫描无效这是什么问题啊，程序哪里错了？

ID:449881 · 发表于 2019-4-23 20:49

#include "stm32f10x.h"
#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "beep.h"
int main(void)
{
u8 key;
delay_init();
LED_Init();
KEY_Init();
BEEP_Init();
LED0=0;
while(1)
{
key =KEY_Scan(0);
if(KEY1==0)
{
while(1)
{
BEEP=1;
LED1=1;
if(BEEP==1)
{
LED0=1-LED0;
delay_ms(300);
key=KEY_Scan(0); //
if(KEY0==0)
{
BEEP=0;
break;
}
}
}
}
if(KEY0==0)
{
LED1=0; //LED1
LED0=1; //LED0
BEEP=0;
}
else delay_ms(20);
}
}

复制代码

*** Using Compiler 'V5.06 update 6 (build 750)', folder: 'F:\91UserData\qianrushi\ARM\ARMCC\Bin'
Rebuild target 'Target 1'
assembling startup_stm32f10x_hd.s...
compiling core_cm3.c...
compiling main.c...
main.c(17): warning:  #223-D: function "KEY_Scan" declared implicitly
  key =KEY_Scan(0);
main.c(9): warning:  #550-D: variable "key"  was set but never used
      u8 key;
main.c: 2 warnings, 0 errors
compiling stm32f10x_it.c...
compiling system_stm32f10x.c...
compiling stm32f10x_wwdg.c...
compiling stm32f10x_usart.c...
compiling stm32f10x_tim.c...
compiling stm32f10x_spi.c...
compiling stm32f10x_sdio.c...
compiling stm32f10x_rtc.c...
compiling stm32f10x_rcc.c...
compiling stm32f10x_pwr.c...
compiling stm32f10x_iwdg.c...
compiling stm32f10x_i2c.c...
compiling stm32f10x_gpio.c...
compiling stm32f10x_fsmc.c...
compiling stm32f10x_flash.c...
compiling stm32f10x_exti.c...
compiling stm32f10x_dbgmcu.c...
compiling stm32f10x_dma.c...
compiling stm32f10x_dac.c...
compiling stm32f10x_crc.c...
compiling stm32f10x_cec.c...
compiling stm32f10x_can.c...
compiling stm32f10x_bkp.c...
compiling stm32f10x_adc.c...
compiling misc.c...
compiling usart.c...
..\SYSTEM\usart\usart.c(48): warning:  #260-D: explicit type is missing ("int" assumed)
  _sysexit(int x)
..\SYSTEM\usart\usart.c: 1 warning, 0 errors
compiling delay.c...
compiling sys.c...
compiling beep.c...
..\HARDWARE\beep\beep.c(13): warning:  #1-D: last line of file ends without a newline

..\HARDWARE\beep\beep.c: 1 warning, 0 errors
compiling led.c...
compiling key.c...
linking...
..\beep.axf: Error: L6915E: Library reports error: __use_no_semihosting was requested, but _sys_exit was referenced
Not enough information to list load addresses in the image map.
Finished: 1 information, 0 warning and 1 error messages.
"..\beep.axf" - 1 Error(s), 4 Warning(s).
Target not created.
Build Time Elapsed:  00:00:09

ID:449881 · 发表于 2019-4-23 20:54

键盘扫描无效，为什么会出现这种情况？求解

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