Exemplos de SCL1 em C++ (Cpp)

Exemplo n.º 1

Arquivo: i2c-master-soft.c Projeto: batitous/klipos

static void i2c_soft_stop(void)
{
    SCL1();
    waitSomeTimeInUs(2);
    SDA(1);
    waitSomeTimeInUs(1);
}

Exemplo n.º 2

Arquivo: i2c-master-soft.c Projeto: batitous/klipos

static uint8_t i2c_soft_receive_bit(void)
{
    // SDA = 1
    // SCL = 1
    // wait SCL low
    // bit = SDA
    // SCL = 0
    
    uint8_t bit;
    
    SDA(1);
    waitSomeTimeInUs(1);
    
    SCL1();
    waitSomeTimeInUs(1);
    while( GET_SCL() == 0);
    
    bit = GET_SDA();
    
    SCL0();
    SDA_OUTPUT();
    waitSomeTimeInUs(1);
    
    return bit;
}

Exemplo n.º 3

Arquivo: MMA8451_I2C.c Projeto: ShH-Chen/Car_For_K60

//*************************************************
//字节发送程序
//发送c(可以是数据也可是地址)，送完后接收从应答
//不考虑从应答位
void send_ch(unsigned char c){
	unsigned char i;
	for(i=0;i<8;i++){
		SCL0();
		if((c<<i) & 0x80)SDA1(); //判断发送位
		else SDA0();
		iicdelay();
		SCL1();
		iicdelay();
		SCL0();
	}
	iicdelay();
	SDA1(); //发送完8bit，释放总线准备接收应答位
	iicdelay();
	SCL1();
	iicdelay(); //sda上数据即是从应答位              
	SCL0(); //不考虑从应答位|但要控制好时序
}

Exemplo n.º 4

Arquivo: MMA8451_I2C.c Projeto: ShH-Chen/Car_For_K60

//************************************************
//主应答(包含ack:SDA=0和no_ack:SDA=0)
void IIC_ack_main(unsigned char ack_main){
	SCL0();
	if(ack_main) SDA0(); //ack主应答
	else SDA1(); //no_ack无需应答
	iicdelay();
	SCL1();
	iicdelay();
	SCL0();
}

Exemplo n.º 5

Arquivo: MMA8451_I2C.c Projeto: ShH-Chen/Car_For_K60

//nop指令个数定义   
//#define iicdelay() {asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");}  
void IIC_start(void){
	SCL0();
	SDA1();
	iicdelay();
	SCL1();
	iicdelay();
	SDA0();
	iicdelay();
	SCL0();
}

Exemplo n.º 6

Arquivo: i2c-master-soft.c Projeto: batitous/klipos

static void i2c_soft_send_bit(uint8_t bit)
{
    // set bit on SDA
    // NOP
    // SCL = 1
    // wait SCL low
    // then SCL = 0

    SDA((bit&0x1));
    waitSomeTimeInUs(1);
    SCL1();
    waitSomeTimeInUs(2);
    
    SCL0();
    waitSomeTimeInUs(1);
}

Exemplo n.º 7

Arquivo: MMA8451_I2C.c Projeto: ShH-Chen/Car_For_K60

//**************************************************
//字节接收程序
//接收器件传来的数据，此程序应配合|主应答函数|IIC_ack_main()使用
//return: uchar型1字节
unsigned char read_ch(void)
{
   unsigned char i;
   unsigned char c;
	c=0;
	SCL0();
	iicdelay();
	SDA1(); //置数据线为输入方式
	DIR_IN();
	for(i=0;i<8;i++){
		iicdelay();
		SCL0(); //置时钟线为低，准备接收数据位
		iicdelay();
		SCL1(); //置时钟线为高，使数据线上数据有效
		iicdelay();
		c<<=1;
		if(SDA) c+=1; //读数据位，将接收的数据存c
	}
	SCL0();
	DIR_OUT();
	return c;
}