sta013.c
来自「用LPC932控制sta013解码芯片」· C语言 代码 · 共 937 行 · 第 1/3 页
C
937 行
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0x22, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09, 0x28, 0xf6,
0x20, 0x00, 0x21, 0x01, 0x23, 0x80, 0x24, 0x86, 0x25, 0xcb,
0x26, 0xab, 0x27, 0x0a, 0x28, 0xf7, 0x20, 0x42, 0x21, 0xe1,
0x22, 0x0f, 0x24, 0x89, 0x25, 0x07, 0x26, 0xaa, 0x28, 0xf8,
0x20, 0x00, 0x21, 0x02, 0x22, 0x00, 0x23, 0x00, 0x24, 0x81,
0x25, 0xc4, 0x26, 0xab, 0x28, 0xf9, 0x21, 0x00, 0x23, 0x80,
0x24, 0x89, 0x25, 0x48, 0x26, 0xaa, 0x28, 0xfa, 0x20, 0x05,
0x23, 0x84, 0x25, 0x07, 0x26, 0xb4, 0x27, 0x09, 0x28, 0xfb,
0x20, 0x70, 0x21, 0x4e, 0x22, 0xb8, 0x23, 0x95, 0x26, 0x10,
0x27, 0x08, 0x28, 0xfc, 0x20, 0x00, 0x21, 0x00, 0x22, 0x00,
0x23, 0x80, 0x24, 0x86, 0x25, 0xc3, 0x26, 0xab, 0x27, 0x0a,
0x28, 0xfd, 0x20, 0x42, 0x21, 0xe7, 0x22, 0x0f, 0x24, 0x89,
0x25, 0x07, 0x26, 0xaa, 0x28, 0xfe, 0x20, 0x00, 0x21, 0xbb,
0x22, 0x00, 0x23, 0x95, 0x26, 0x20, 0x27, 0x00, 0x28, 0xff,
0x20, 0x05, 0x21, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09,
0x2a, 0x08, 0x10, 0x01, 0x3a, 0x00, 0x64, 0x3a, 0x65, 0xbb,
0x08, 0x3a, 0x09, 0xbb, 0x50, 0x10, 0x52, 0x67, 0x51, 0x77,
/*0x05, 0xa1,*/ 0x18, 0x04, 0xff, 0xff};
//u8 code Updata[]={
//0x10, 0x01, 0x10, 0x00, 0x14, 0x01, 0x54, 0x01,0x55, 0x31, 0x52, 0x67, 0x51, 0x77, 0x65, 0xbb, 0x64, 0x31,
//0x50, 0x10, 0x61, 0x0f, 0x06, 0x0c, 0x07, 0x00, 0x05, 0xa1,0x0d, 0x00, 0x18, 0x04, 0x0c, 0x01, 0x72, 0x01, 0x13, 0x01,0x14, 0x00, 0xff, 0xff};
// Board specific settings from STA013 data sheet
//u8 Updata[]= {0x54, 0x01, 0x55, 0x21, 0x06, 0x0c, 0x0b, 0x03, 0x61, 0x0f, 0x50, 0x10,
//0x65, 0x55, 0x52, 0x04, 0x64, 0x55, 0x51, 0x00, 0x05, 0xa1, 0x0d, 0x00, 0x18, 0x04, 0x0c, 0x05, 0x13, 0x00, 0xff, 0xff};
//短延时
void Delays(long us)
{
while ( us ) us--;
}
//与STA013的连接IO初始化
void IoIni(void)
{
P0M1=0x00;
P0M2=0x00;
//SPI初始化
P2M1=0x80;
P2M2=0x00;
SPCTL=0xdc; //SSIG=1,SPIEN=1,MSTR=1;
SPSTAT=0xC0; //清除SPSTAT中的标志位
//I2C初始化
P1M1=0x1c; //SDA,SCl为开漏输出
P1M2=0x0c;
}
//STA013复位
void sta_Reset(void)
{
RESET=1; //RST低为复位
RESET=0;
Delays(20);
RESET=1;
Delays(20);
}
/*******************************************************************
起动总线函数
函数原型: void Start_I2c();
功能: 启动I2C总线,即发送I2C起始条件.
********************************************************************/
void Start_I2c()
{
SDA=1; /*发送起始条件的数据信号*/
_Nop();
SCL=1;
_Nop(); /*起始条件建立时间大于4.7us,延时*/
_Nop();
_Nop();
_Nop();
_Nop();
SDA=0; /*发送起始信号*/
_Nop(); /* 起始条件锁定时间大于4μs*/
_Nop();
_Nop();
_Nop();
_Nop();
SCL=0; /*钳住I2C总线，准备发送或接收数据 */
_Nop();
_Nop();
}
/*******************************************************************
结束总线函数
函数原型: void Stop_I2c();
功能: 结束I2C总线,即发送I2C结束条件.
********************************************************************/
void Stop_I2c()
{
SDA=0; /*发送结束条件的数据信号*/
_Nop(); /*发送结束条件的时钟信号*/
SCL=1; /*结束条件建立时间大于4μs*/
_Nop();
_Nop();
_Nop();
_Nop();
_Nop();
SDA=1; /*发送I2C总线结束信号*/
_Nop();
_Nop();
_Nop();
_Nop();
}
/*******************************************************************
字节数据发送函数
函数原型: void SendByte(uchar c);
功能: 将数据c发送出去,可以是地址,也可以是数据,发完后等待应答,并对
此状态位进行操作.(不应答或非应答都使ack=0)
发送数据正常，ack=1; ack=0表示被控器无应答或损坏。
********************************************************************/
void SendByte(uchar c)
{
uchar BitCnt;
for(BitCnt=0;BitCnt<8;BitCnt++) /*要传送的数据长度为8位*/
{
if((c<<BitCnt)&0x80)SDA=1; /*判断发送位*/
else SDA=0;
_Nop();
SCL=1; /*置时钟线为高，通知被控器开始接收数据位*/
_Nop();
_Nop(); /*保证时钟高电平周期大于4μs*/
_Nop();
_Nop();
_Nop();
SCL=0;
}
_Nop();
_Nop();
SDA=1; /*8位发送完后释放数据线，准备接收应答位*/
_Nop();
_Nop();
SCL=1;
_Nop();
_Nop();
_Nop();
if(SDA==1)ack=0;
else ack=1; /*判断是否接收到应答信号*/
SCL=0;
_Nop();
_Nop();
}
/*******************************************************************
字节数据接收函数
函数原型: uchar RcvByte();
功能: 用来接收从器件传来的数据,并判断总线错误(不发应答信号)，
发完后请用应答函数应答从机。
********************************************************************/
uchar RcvByte()
{
uchar retc;
uchar BitCnt;
retc=0;
SDA=1; /*置数据线为输入方式*/
for(BitCnt=0;BitCnt<8;BitCnt++)
{
_Nop();
SCL=0; /*置时钟线为低，准备接收数据位*/
_Nop();
_Nop(); /*时钟低电平周期大于4.7μs*/
_Nop();
_Nop();
_Nop();
SCL=1; /*置时钟线为高使数据线上数据有效*/
_Nop();
_Nop();
retc=retc<<1;
if(SDA==1)retc=retc+1; /*读数据位,接收的数据位放入retc中 */
_Nop();
_Nop();
}
SCL=0;
_Nop();
_Nop();
return(retc);
}
/********************************************************************
应答子函数
函数原型: void Ack_I2c(bit a);
功能: 主控器进行应答信号(可以是应答或非应答信号，由位参数a决定)
********************************************************************/
void Ack_I2c(bit a)
{
if(a==0)SDA=0; /*在此发出应答或非应答信号 */
else SDA=1;
_Nop();
_Nop();
_Nop();
SCL=1;
_Nop();
_Nop(); /*时钟低电平周期大于4μs*/
_Nop();
_Nop();
_Nop();
SCL=0; /*清时钟线，钳住I2C总线以便继续接收*/
_Nop();
_Nop();
}
/*******************************************************************
向有子地址器件发送多字节数据函数
函数原型: bit ISendStr(uchar sla,uchar suba,uchar *s,uchar no);
功能: 从启动总线到发送地址，子地址,数据，结束总线的全过程,从器件
地址sla，子地址suba，发送内容是s指向的内容，发送no个字节。
如果返回1表示操作成功，否则操作有误。
注意： 使用前必须已结束总线。
********************************************************************/
bit ISendStr(uchar sla,uchar suba,uchar *s,uchar no)
{
uchar i;
Start_I2c(); /*启动总线*/
SendByte(sla); /*发送器件地址*/
if(ack==0)return(0);
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