程序介绍：简单的按键按下，相应的灯亮，按键弹起，灯灭。只有一个按键哦，相应的也只是一个灯亮。 
#define MX_PIC //Defines for microcontroller
#define P16F690
#define MX_EE
#define MX_EE_SIZE 256
#define MX_
I
#define MX_SPI_BCB
#define MX_SPI_SDI 4
#define MX_SPI_SDO 7
#define MX_SPI_SCK 6
#define MX_UART
#define MX_UART_B
#define MX_UART_TX 7
#define MX_UART_RX 5
#define MX_I2C
#define MX_MI2C
#define MX_I2C_B
#define MX_I2C_SDA 4
#define MX_I2C_SCL 6
#define MX_PWM
#define MX_PWM_C
1
#define MX_PWM_
S1 trisc
#define MX_PWM_1 5 //Functions
#define MX_CLK_SPEED 19660800
#ifdef _BOO
C
#include <system.h>
#endif
#ifdef HI_
CH_C
#include <pic.h>
#endif //Configuration data //Internal functions
#include "F:\Program Files\Matrix Multimedia\Flowcode V4\FCD\internals.h" //Macro function declarations
//Variable declarations
char FCV_COUNT; //Macro implementations void main()
{
//Initialisation
ansel = 0;
anselh = 0;
//Interrupt initialisation code
option_reg = 0xC0;
//Loop
//Loop: While 1
while (1)
{
//Input
//Input: A0 -> count
trisa = trisa | 0x01;
FCV_COUNT = ((porta & 0x01) == 0x01);
//Decision
//Decision: count=1?
if (FCV_COUNT==1)
{
//Output
//Output: count -> C0
trisc = trisc & 0xfe;
if (FCV_COUNT)
portc = (portc & 0xfe) | 0x01;
else
portc = portc & 0xfe;
} else {
//Input
//Input: PORT A -> count
trisa = trisa | 0xff;
FCV_COUNT = porta;
//Output
//Output: count -> PORT C
trisc = 0x00;
portc = FCV_COUNT;
}
}
mainendloop: goto mainendloop;
} void MX_I
RRUPT_MACRO(void)
{
}
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