【求教】谁做过北科那种键盘加液晶调参的，希望能学习一下

lch152060 · 发表于 2019-12-10 21:57:28

类似于图片这种，我能想到的是用CH355做  这样oled加键盘只需要一对ic但是程序这块一致搞不定，希望大佬可以教一下
下面是我的程序：
ch455。c
/*********************************************************************/
* * 函数功能：IIC产生起始信号函数 * 输入参数：无 * 输出参数：无 */
void CH455_I2c_Start()
{
  DIR_OUT();
  SCL1(); //SCL = high;
  simiic_delay();
  SDA1(); //SDA = high;
  simiic_delay();
  SDA0(); //SDA = low;
  simiic_delay();
  SCL0(); //SCL = low;
  simiic_delay();
}
/* * 函数功能：IIC产生停止信号 * 输入参数：无 * 输出参数：无 */
void CH455_I2c_Stop()
{
  DIR_OUT();
  SCL0();    //SCL = low;
  simiic_delay();
  SDA0();    //SDA = low;
  simiic_delay();
  SCL1(); //SCL = high;
  simiic_delay();
  SDA1(); //SDA = high;

void CH455_I2c_WrByte(unsigned char IIC_Byte)
{
  unsigned char i;
  DIR_OUT();
  for(i = 0; i < 8; i++)
  {
if(IIC_Byte & 0x80)
   SDA1(); //SDA=high;
else
   SCL0();  //SDA=low;
simiic_delay();
SCL1();    //SCL=high;
simiic_delay();
SCL0();    //SCL=low;
simiic_delay();
IIC_Byte<<=1;
  }
  simiic_delay();
  SDA1();       //SDA=1;
  simiic_delay();
  SCL1();       //SCL=1;
  simiic_delay();
  SCL0();          //SCL=0;
  simiic_delay();
}
unsigned char  CH455_I2c_RdByte( void )  //读一个字节数据
{
  unsigned char i, bytedata;
  DIR_IN(); //将数据设置为输入模式
  simiic_delay();
  SDA1();    //数据线拉高
simiic_delay();
  SDA0();
simiic_delay();
for(i = 0; i < 8; i++)    //读8位数据
{
   SCL1();
   simiic_delay();
   bytedata <<= 1;
   simiic_delay();
   bytedata |= (gpio_get(SEEKFREE_SDA));
   simiic_delay();
   SCL0();
   simiic_delay();
}
DIR_OUT();       //数据线设置回输出模式
SDA1();       //SDA=1;
simiic_delay();
SCL1();       //SCL=1;
simiic_delay();
SCL0();          //SCL=0;
simiic_delay();
return bytedata;//返回数据
}
void CH455_Write( uint16 cmd ) //写命令
{
      CH455_I2c_Start();             //启动总线
// simiic_start();
      CH455_I2c_WrByte(((uint8)(cmd>>7)&CH455_I2C_MASK)|CH455_I2C_ADDR);
      CH455_I2c_WrByte((uint8)cmd);    //发送数据
      CH455_I2c_Stop();                //结束总线
// simiic_stop();
}
extern uint8 keycode;
uint8 CH455_Read( void )  //读取按键
{
//  uint8 keycode;
  // simiic_start();
  CH455_I2c_Start();             //启动总线
  CH455_I2c_WrByte((uint8)(CH455_GET_KEY>>7)&CH455_I2C_MASK|0x01|CH455_I2C_ADDR);
  keycode=CH455_I2c_RdByte();    //读取数据
//simiic_stop();
CH455_I2c_Stop();             //结束总线
  return keycode;
}
/********************************************************************************/
ch455.h
/********************************************************************************/
* ********************************************************************************************* */
// 设置系统参数命令
#define CH455_BIT_ENABLE 0x01  // 开启/关闭位
#define CH455_BIT_SLEEP  0x04  // 睡眠控制位
#define CH455_BIT_7SEG  0x08  // 7段控制位
#define CH455_BIT_INTENS1 0x10  // 1级亮度
#define CH455_BIT_INTENS2 0x20  // 2级亮度
#define CH455_BIT_INTENS3 0x30  // 3级亮度
#define CH455_BIT_INTENS4 0x40  // 4级亮度
#define CH455_BIT_INTENS5 0x50  // 5级亮度
#define CH455_BIT_INTENS6 0x60  // 6级亮度
#define CH455_BIT_INTENS7 0x70  // 7级亮度
#define CH455_BIT_INTENS8 0x00  // 8级亮度
#define CH455_SYSOFF    0x0400          // 关闭显示、关闭键盘
#define CH455_SYSON       ( CH455_SYSOFF | CH455_BIT_ENABLE ) // 开启显示、键盘
#define CH455_SLEEPOFF    CH455_SYSOFF // 关闭睡眠
#define CH455_SLEEPON    ( CH455_SYSOFF | CH455_BIT_SLEEP ) // 开启睡眠
#define CH455_7SEG_ON    ( CH455_SYSON | CH455_BIT_7SEG ) // 开启七段模式
#define CH455_8SEG_ON    ( CH455_SYSON | 0x00 )       // 开启八段模式
#define CH455_SYSON_4    ( CH455_SYSON | CH455_BIT_INTENS4 ) // 开启显示、键盘、4级亮度
#define CH455_SYSON_8    ( CH455_SYSON | CH455_BIT_INTENS8 ) // 开启显示、键盘、8级亮度

// 加载字数据命令
#define CH455_DIG0  0x1400 // 数码管位0显示,需另加8位数据
#define CH455_DIG1  0x1500 // 数码管位1显示,需另加8位数据
#define CH455_DIG2  0x1600 // 数码管位2显示,需另加8位数据
#define CH455_DIG3  0x1700 // 数码管位3显示,需另加8位数据

// 读取按键代码命令
#define CH455_GET_KEY 0x0700    // 获取按键,返回按键代码

// CH455接口定义
#define  CH455_I2C_ADDR  0x40 // CH455的地址
#define  CH455_I2C_MASK  0x3E // CH455的高字节命令掩码

/****************************************************************/
留的是硬件IIC引脚
//因此这里使用硬件IIC初始化6050，如需使用软件IIC，可以将软件iic引脚修改为SDA 接A13  SCL接A14
//然后使用软件IIC初始化函数即可
//硬件IIC速度明显优于软件IIC
// mpu6050_init_hardware();

EnableInterrupts;
while(1)
{
      CH455_Write( CH455_SYSON );       //抗干扰，定时刷新CH455寄存器
//       CH455_Write( CH455_DIG0 | 0XFF );
      switch((CH455_Read()/8)%8)
      {
                  case 0:key=0;break;
                  case 1:key=1;break;
                  case 2:key=2;break;
                  case 3:key=3;break;
                  case 4:key=4;break;
                  case 5:key=5;break;
                  case 6:key=6;break;
      default:  key=10;
      }
}
}
求大佬指教