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//////////////////////////////////////////////////////////////////////////
/// COPYRIGHT NOTICE
/// Copyright (c) 2018, ���ؿƼ�
/// All rights reserved.
///
/// @file iic_sim
/// @brief iic ģ��io �汾�� ��cpu�޹أ�Ψһ��Ҫ�޸ĵľ���ͷ�����еĹܽŶ���
/// @info ���ޱ�Ҫ�����޸�
///�����ļ�ʵ�ֵĹ��ܵ�������
///
/// @version 1.1 CCsens technology
/// @author CC
/// @date 20180102
//
//////////////////////////////////////////////////////////////////////////
#include "msp_siicx.h"
/*------------------------------------------------
˿ڶ
I2CߴݹУÿһֽڣ
ҪһӦ״̬λݵ
ͨӦλ֪Ӧλʱ
Ӧλ״̬ѭ˭
˭ԭ򣬼ɽӦλ
ӦʱڼSDA
ͣʹʱĸߵƽڼȶĵ͵ƽͼ9
Ȼǽͱʱ
ϸı6 ӻʱ
Ӧλɴӻ;ӴӻʱӦλ
I2C߱׼ ӦλΪ0ʾӦ ACK
ΪA; Ϊ1ʾӦ NACK
ΪNALSB֮ӦͷSDAߣSDA
ԵȴӦλ
ڽһֽڵݣ
߲ٽոʱӦӦ
ֽ֪ͨ˷Ӧ״̬
Ӧֹ͡
------------------------------------------------*/
///<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
void L0_iicx_INIT(TS_siic *p,unsigned char v)
{
if (v)///��������
{
p->pf_SDA_set(1);
p->pf_SCL_set(1);
p->pf_SDA_out(1);
p->pf_SCL_out(1);
}else
{
}
}
unsigned char L0_iicx_SDA_ask(TS_siic *p)
{
if(p->pf_SDA_get() != 0)
{
return 1;
}
else
{
return 0;
}
}
///<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
/****************
void L0_iicx_Reset(void)
{
p->pf_SCL_set(1); p->pf_SDA_set(1);//pf_SDA_set(1);; //ȷ���ͷ�����
}
********************/
//**********************************************
//����ʼλ IO_SDA=1->0
void L0_iicx_Start(TS_siic *p)
{
p->pf_SDA_set(1);//pf_SDA_set(1);;
p->pf_SCL_set(1);
p->pf_SDA_set(0);
p->pf_SCL_set(0);
///fixme: cc
L0_slc_1_delay();
L0_slc_1_delay();
L0_slc_1_delay();
}
//************************************************
//��ֹͣλ IO_SDA = 0->1
void L0_iicx_Stop(TS_siic *p)
{
p->pf_SDA_set(0);
p->pf_SCL_set(1);
p->pf_SDA_set(1);
p->pf_close();
}
//************************************************
//��Ӧ��(����ack:IO_SDA = 0��no_ack:IO_SDA = 0)
///�������ӻ���ACK
void L0_iicx_Ack(TS_siic *p)
{
p->pf_SDA_out(1);//����SDA ������
p->pf_SCL_set(0);
p->pf_SDA_set(0);
p->pf_SCL_set(1);
p->pf_SCL_set(0);
p->pf_SDA_out(0);
// Lc_delay_ms(2); ///for debug wave easy to see
}
///�������ӻ���NOACK
void L0_iicx_NoAck(TS_siic *p)
{
p->pf_SDA_out(1);//����SDA ������
p->pf_SCL_set(0);
p->pf_SDA_set(1);
p->pf_SCL_set(1);
p->pf_SCL_set(0);
p->pf_SDA_out(0);
// Lc_delay_ms(2);
}
/// �ӻ����ص�ack
void L0_iicx_WaitAck(TS_siic *p)
{
p->pf_SDA_out(0);
p->pf_SCL_set(1);
////
p->pf_SCL_set(0);
p->pf_SDA_out(1);
/// Lc_delay_ms(2);
}
/******
I2C߱׼ ӦλΪ0ʾӦ ACK ΪA;
Ϊ1ʾӦ NACK ΪNA
LSB֮ӦͷSDAߣSDA
ԵȴӦλ
ڽһֽڵݣ
߲ٽոʱӦӦ
ֽ֪ͨ˷Ӧ״̬
Ӧֹ͡
// ���� SDA�Ƿ���ACK
bit L0_iicx_Test_Ack(void)
{ //����SDA ������
bit ACK_Flag = 0;
p->pf_SCL_set(0);
p->pf_SDA_set(1);//pf_SDA_set(1);;
p->pf_SCL_set(1);
if(IO_SDA = 0)
ACK_Flag = 1;
else
ACK_Flag = 0;
p->pf_SCL_set(0);
return ACK_Flag;
// return 1;// debug
}
*******/
//*************************************************
//�ֽڷ��ͳ���
//����c(����������Ҳ���ǵ�ַ)�����������մ�Ӧ��
//�����Ǵ�Ӧ��λ
void L0_iicx_SendData(TS_siic *p,unsigned char c)
{
// unsigned char ack=8;
unsigned char BitCnt=8;//һ�ֽ�8λ
//����SDA ������
for(BitCnt = 0;BitCnt < 8;BitCnt ++) //Ҫ���͵����ݳ���Ϊ8λ
{
if((c << BitCnt ) & 0x80)
p->pf_SDA_set(1);//pf_SDA_set(1);; //�жϷ���λ
else
p->pf_SDA_set(0);
p->pf_SCL_set(1); //��ʱ����Ϊ�ߣ�֪ͨ��������ʼ��������λ
p->pf_SCL_set(0);
}//8clk
L0_iicx_WaitAck(p);
}
//**************************************************
//�ֽڽ��ճ���
//�����������������ݣ��˳���Ӧ����|��Ӧ������|i2c_ack_main(void)ʹ��
//return: uchar��1�ֽ�
unsigned char L0_iicx_ReceiveData(TS_siic *p)
{
unsigned char BitCnt=8,IIC_RX_Data = 0;
p->pf_SDA_out(0);// p->pf_SDA_set(1);//pf_SDA_set(1);; //�������� ����SDA ������
for(BitCnt = 0;BitCnt<8;BitCnt++)
{
L0_I2C_delay(1);
p->pf_SCL_set(0); //��ʱ����Ϊ�ͣ�׼����������λ
p->pf_SCL_set(1); //��ʱ����Ϊ��ʹ��������������Ч
L0_I2C_delay(1);
IIC_RX_Data = IIC_RX_Data << 1;
if(0 != p->pf_SDA_get())//�м� ��������������
IIC_RX_Data = IIC_RX_Data + 1; //������λ,���յ�����λ����retc��
L0_I2C_delay(1);
}// 8clk up
p->pf_SCL_set(0);
return IIC_RX_Data;
}
/// ��ȡ n������ ����p��
void L1_iicx_ReadNByte(TS_siic *p, unsigned char *b,unsigned char n)
{
unsigned char i;
L0_iicx_Start(p); // ����I2C
L0_iicx_SendData(p,(p->sal)| 0x01); //����������ַ
//p->pf_SDA_out(0);
for(i = 0;i<n-1;i++) //��ȡ�ֽ�����
{
*(b + i) = L0_iicx_ReceiveData(p); //��ȡ����
L0_iicx_Ack(p); //__/```\__
}
*(b + n - 1) = L0_iicx_ReceiveData(p);
L0_iicx_NoAck(p);
p->pf_SDA_out(1);
L0_iicx_Stop(p);
}
/// I2C�豸��ַΪ8bit,��������λΪ��дλ,0Ϊд,1Ϊ��
////��ȡ�����ֽڵģ��ȷ��������ֽ� Ȼ���ٶ�ȡ
void L1_iicx_Read2cmd(TS_siic *p, unsigned char *c,unsigned char *b,unsigned char n)
{
unsigned char i;
L0_iicx_Start(p); // ����I2C
L0_iicx_SendData(p,(p->sal)| 0x01); //����������ַ
L0_iicx_SendData(p,(*c)); //����������ַ
L0_iicx_SendData(p,*(c+1));
//p->pf_SDA_out(0);
for(i = 0;i<n-1;i++) //��ȡ�ֽ�����
{
*(b + i) = L0_iicx_ReceiveData(p); //��ȡ����
L0_iicx_Ack(p); //__/```\__
}
*(b + n - 1) = L0_iicx_ReceiveData(p);
L0_iicx_NoAck(p);
p->pf_SDA_out(1);
L0_iicx_Stop(p);
}
///////////////////////////////
///д��һ��reg Ϊ������д�������߶�ȡ����
void L1_iicx_Write1Reg(TS_siic *p,unsigned char reg)
{
L0_iicx_Start(p); //����I2C
L0_iicx_SendData(p,p->sal);//����������ַ
L0_iicx_SendData(p,reg);
}
void L1_iicx_Write2Reg(TS_siic *p,unsigned char reg,unsigned char reg2)
{
L0_iicx_Start(p); //����I2C
L0_iicx_SendData(p,p->sal);//����������ַ
L0_iicx_SendData(p,reg);
L0_iicx_SendData(p,reg2);
}
// sla.(reg)=cmd
void L2_iicx_Write1Reg1Cmd(TS_siic *p, unsigned char reg,unsigned char cmd)
{
L1_iicx_Write1Reg(p,reg);
L0_iicx_SendData(p,cmd);
L0_iicx_Stop(p);
/*****************
if(gRccUs05 >0)///����iic��Ч�� ����û�н���
{
L0_uart0_uc(gRccUs05);gRccUs05 = 0;
}
***************/
}
//��ȡreg��ַ(1Byte)��n������ sla.(reg) sla.(reg+1)................ sla.(reg+n)
void L2_iicx_Read1Reg(TS_siic *p,unsigned char reg,
unsigned char *r,unsigned char n)
{
// U8 d[1];
//S ADD W A REG A
L1_iicx_Write1Reg(p,reg);
//S ADD R A D1 A D2 A.....DX N P
L1_iicx_ReadNByte(p,r,n);
}
void L2_iicx_Read2Reg(TS_siic *p,unsigned char H,unsigned char L,
unsigned char *r,unsigned char n)
{
// U8 d[1];
//S ADD W A REG A
L1_iicx_Write1Reg(p,H);
L0_iicx_SendData(p,L);
//S ADD R A D1 A D2 A.....DX N P
L1_iicx_ReadNByte(p,r,n);
}
////// S slaW cmd cmd2 S slaR A A NACK P
////// A A A A MSB LSB CRC
void L2_iicx_Read2Cmd(TS_siic *p, unsigned char cmd,unsigned char cmd2,
unsigned char *buf,unsigned char n)
{
L1_iicx_Write1Reg(p,cmd);
L0_iicx_SendData(p,cmd2);
L1_iicx_ReadNByte(p,buf,n);
}