我的项目有问题，我需要你的帮助。
我的项目是通过 gui 使用 PIC16F877A 控制带有 4 个直流电机的机械臂，并“教”它们一些动作。我已经编写了 gui 中带有 8 个按钮的动作代码，上、下、左、右等。
我可以从模拟引脚读取值并将它们从串行发送到 pc，现在我通过读取模拟值驱动特定位置的电机遇到问题。
我用while循环完成了它，但它只运行1个电机，然后它停止了，我什么也做不了。一开始我可以使用所有其他按钮，但如果我按下“b”或“e”，它就会堆叠起来，我什么也做不了。
你能帮忙吗？？
PS对不起我的英语。
unsigned int y0, y1, y2, y3;
char x;
char buffer[15];
void GetDelay(){
Delay_ms(80);
}
void main() {
CMCON = 0x07;
ADCON1 = 0x80;
UART1_Init(9600);
Delay_ms(100);
ADC_Init();
Delay_ms(100);
TRISA0_bit = 1;
PORTA.F0 = 1;
TRISA1_bit = 1;
PORTA.F1 = 1;
TRISA2_bit = 1;
PORTA.F2 = 1;
TRISA3_bit = 1;
PORTA.F3 = 1;
TRISB = 0;
PORTB = 0;
TRISB0_bit = 1;
PORTB.F0 = 1;
TRISB1_bit = 1;
PORTB.F1 = 1;
TRISB4_bit = 1;
PORTB.F4 = 0;
TRISB5_bit = 1;
PORTB.F5 = 0;
TRISC1_bit = 0;
PORTC.F1 = 0;
TRISC2_bit = 0;
PORTC.F2 = 0;
TRISC3_bit = 0;
PORTC.F3 = 0;
TRISC4_bit = 0;
PORTC.F4 = 0;
TRISC5_bit = 0;
PORTC.F5 = 0;
TRISD0_bit = 1;
PORTD.F0 = 1;
TRISD1_bit = 1;
PORTD.F1 = 1;
TRISD2_bit = 1;
PORTD.F2 = 1;
TRISD3_bit = 1;
PORTD.F3 = 1;
TRISD4_bit = 1;
PORTD.F4 = 1;
TRISD5_bit = 1;
PORTD.F5 = 1;
TRISD6_bit = 0;
PORTD.F6 = 0;
TRISD7_bit = 0;
PORTD.F7 = 0;
PWM2_Init(5000); //Initialize PWM1
PWM2_Start(); //start PWM1
PWM2_Set_Duty(127); //Set current duty for PWM1
while(1){
if(RB4_bit==0){
if (UART1_Data_Ready() == 1){
x = UART1_Read();
}
//ARPAGH OPEN
if (x=='1' ){
RC4_bit=0;
RC5_bit=1;
GetDelay();
RC4_bit=0;
RC5_bit=0;
}
//ARPAGH CLOSE
else if (x=='2'){
RC4_bit=1;
RC5_bit=0;
GetDelay();
RC4_bit=0;
RC5_bit=0;
}
//2h ARTHRWSH DOWN
else if (x=='3'){
RB3_bit=1;
RB2_bit=0;
GetDelay();
RB3_bit=0;
RB2_bit=0;
}
//2h ARTHRWSH UP
else if (x=='4'){
RB3_bit=0;
RB2_bit=1;
GetDelay();
RB3_bit=0;
RB2_bit=0;
}
//1h ARTHRWSH DOWN
else if (x=='5'){
RD6_bit=0;
RD7_bit=1;
GetDelay();
RD6_bit=0;
RD7_bit=0;
}
//1h ARTHRWSH UP
else if (x=='6'){
RD6_bit=1;
RD7_bit=0;
GetDelay();
RD6_bit=0;
RD7_bit=0;
}
//PERISTROFH RIGHT
else if (x=='7'){
RC2_bit=1;
RC3_bit=0;
GetDelay();
RC2_bit=0;
RC3_bit=0;
}
//PERISTROFH LEFT
else if (x=='8'){
RC2_bit=0;
RC3_bit=1;
GetDelay();
RC2_bit=0;
RC3_bit=0;
}
//ANALOG
else if (x=='9'){
y0 = ADC_Get_Sample(0);
sprintl(buffer, "%d", y0);
UART1_Write_Text(buffer);
UART1_Write_Text(",");
y2 = ADC_Get_Sample(2);
sprintl(buffer, "%d", y2);
UART1_Write_Text(buffer);
UART1_Write_Text(",");
y1 = ADC_Get_Sample(1);
sprintl(buffer, "%d", y1);
UART1_Write_Text(buffer);
UART1_Write_Text(",");
y3 = ADC_Get_Sample(3);
sprintl(buffer, "%d", y3);
UART1_Write_Text(buffer);
//UART1_Write_Text("\n");
UART1_Write(13);
}
//START POSITION
else if (x=='b'){
//ARPAGH OPEN
while (RD2_Bit==0){
RC4_bit=0;
RC5_bit=1;
GetDelay();
RC4_bit=0;
RC5_bit=0;
}
//2h ARTHRWSH UP
while (y2>440){
RB3_bit=0;
RB2_bit=1;
GetDelay();
RB3_bit=0;
RB2_bit=0;
y2 = ADC_Get_Sample(2);
Delay_ms(100);
}
//1h ARTHRWSH DOWN
while (y1>470){
RD6_bit=0;
RD7_bit=1;
GetDelay();
RD6_bit=0;
RD7_bit=0;
y1 = ADC_Get_Sample(1);
Delay_ms(100);
}
//PERISTROFH RIGHT
while (y3>120){
RC2_bit=1;
RC3_bit=0;
GetDelay();
RC2_bit=0;
RC3_bit=0;
y3 = ADC_Get_Sample(3);
Delay_ms(100);
}
}
//FINAL POSITION
else if (x=='e'){
//ARPAGH OPEN
while (RD2_Bit==0){
RC4_bit=0;
RC5_bit=1;
GetDelay();
RC4_bit=0;
RC5_bit=0;
}
//2h ARTHRWSH DOWN
while (y2<440){
y2 = ADC_Get_Sample(2);
Delay_ms(100);
RB3_bit=1;
RB2_bit=0;
GetDelay();
RB3_bit=0;
RB2_bit=0;
}
//2h ARTHRWSH UP
while (y2>440){
y2 = ADC_Get_Sample(2);
Delay_ms(100);
RB3_bit=0;
RB2_bit=1;
GetDelay();
RB3_bit=0;
RB2_bit=0;
}
//1h ARTHRWSH UP
while (y1<470){
y1 = ADC_Get_Sample(1);
Delay_ms(100);
RD6_bit=1;
RD7_bit=0;
GetDelay();
RD6_bit=0;
RD7_bit=0;
}
//1h ARTHRWSH DOWN
while (y1>470){
y1 = ADC_Get_Sample(1);
Delay_ms(100);
RD6_bit=0;
RD7_bit=1;
GetDelay();
RD6_bit=0;
RD7_bit=0;
}
//ARPAGH CLOSE
while (RD3_Bit==0){
RC4_bit=1;
RC5_bit=0;
GetDelay();
RC4_bit=0;
RC5_bit=0;
}
//PERISTROFH LEFT
while (y3<120){
y3 = ADC_Get_Sample(3);
Delay_ms(100);
RC2_bit=0;
RC3_bit=1;
GetDelay();
RC2_bit=0;
RC3_bit=0;
}
//PERISTROFH RIGHT
while (y3>120){
y3 = ADC_Get_Sample(3);
Delay_ms(100);
RC2_bit=1;
RC3_bit=0;
GetDelay();
RC2_bit=0;
RC3_bit=0;
}
}
x = '\0';
}
}
}