zlg7289代码

来源：互联网发布：关于借钱的网络段子编辑：程序博客网时间：2024/05/23 22:54

最近一直在调试ZLG7289根据官方给的代码怎么弄都得不到正确的返回按键ID。根据自己弄了一个，跟大家共享，少走弯路。。。。只提供部分关键的步骤[code=C/C++]unsigned char TM_ZLG7289_Key(void){     unsigned char key;     ZLG7289_pinCS = 0;     DelayUs2x(SPI_T1);    //ZLG7289_LongDelay();     //TM_SPI_SendByte(0x15);     TM_SPI_SendByte(0x15);    DelayUs2x(SPI_T5);    key = TM_SPI_ReceiveByte();     //ZLG7289_LongDelay();     ZLG7289_pinCS = 1;     //ZLG7289_LongDelay();     return key; }  unsigned char TM_SPI_ReceiveByte(void) //reentrant{    unsigned char value =0;    unsigned char i=8;    //Set_SPI_Do();   // DelayUs2x(SPI_T6);//    Set_SPI_Clk();    Clr_SPI_Clk();    DelayUs2x(SPI_T6);    do    {        //Clr_SPI_Clk();        Set_SPI_Clk();        DelayUs2x(SPI_T3);        value = value <<1;        if(Read_SPI_Di())        {            value++;        }        //Set_SPI_Clk();        Clr_SPI_Clk();        DelayUs2x(SPI_T7);    }while(--i != 0);    //DelayUs2x(SPI_T8);    return value;}[/code]

最近一直在调试ZLG7289根据官方给的代码怎么弄都得不到正确的返回按键ID。

根据自己弄了一个，跟大家共享，少走弯路。。。。

只提供部分关键的步骤

[code=C/C++]

unsigned char TM_ZLG7289_Key(void)
{
unsigned char key;
ZLG7289_pinCS = 0;
DelayUs2x(SPI_T1);
//ZLG7289_LongDelay();
//TM_SPI_SendByte(0x15);
TM_SPI_SendByte(0x15);
DelayUs2x(SPI_T5);
key = TM_SPI_ReceiveByte();
//ZLG7289_LongDelay();
ZLG7289_pinCS = 1;
//ZLG7289_LongDelay();
return key;
}

unsigned char TM_SPI_ReceiveByte(void) //reentrant
{
unsigned char value =0;
unsigned char i=8;

//Set_SPI_Do();
// DelayUs2x(SPI_T6);
// Set_SPI_Clk();
Clr_SPI_Clk();
DelayUs2x(SPI_T6);
do
{
//Clr_SPI_Clk();
Set_SPI_Clk();
DelayUs2x(SPI_T3);
value = value <<1;
if(Read_SPI_Di())
{
value++;
}
//Set_SPI_Clk();
Clr_SPI_Clk();
DelayUs2x(SPI_T7);
}while(--i != 0);
//DelayUs2x(SPI_T8);
return value;
}
[/code]