optical/NxFuncs/keyled/tm1637.c

#include "tm1637.h"

#if (LEDKEY_TM1637 != 0)

#include "delay.h"
#include "inout.h"

//------------------------------------------------------------------------------

// <20><><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3>I2C

#define SetTM1637CLKLow		SetI2cSCLOn
#define SetTM1637CLKHigh	SetI2cSCLOff

#define SetTM1637DIOLow		SetI2cSDAOn
#define SetTM1637DIOHigh	SetI2cSDAOff

#define	SetTM1637DIOIn		SetI2cSDAIn
#define	SetTM1637DIOOut		SetI2cSDAOut

#define GetTM1637DIOStatus	GetI2cSDAInputStatus

#ifndef TM1637Delay
#define	TM1637Delay(dl)		DelayUs(dl)
#endif

//---------------------------------------

// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼλ
// CLK Ϊ<>ߵ<EFBFBD>ƽʱ<C6BD><CAB1>DIO<49>ɸ߱<C9B8><DFB1><EFBFBD>
void SetI2CStart(void)
{
	SetTM1637DIOOut();
	SetTM1637CLKHigh();
	SetTM1637DIOHigh();
	TM1637Delay(2);
	SetTM1637DIOLow();
	TM1637Delay(2);
}

// <20><><EFBFBD><EFBFBD>ֹͣλ
// CLK Ϊ<>ߵ<EFBFBD>ƽʱ<C6BD><CAB1>DIO<49>ɵͱ<C9B5><CDB1><EFBFBD>
void SetI2CStop(void)
{
	SetTM1637DIOOut();
	SetTM1637CLKLow();
	TM1637Delay(2);
	SetTM1637DIOLow();
	TM1637Delay(2);
	SetTM1637CLKHigh();
	TM1637Delay(2);
	SetTM1637DIOHigh();
	TM1637Delay(2);
}

// <20>ȴ<EFBFBD>Ӧ<EFBFBD><D3A6>λ
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷʱ, <20>ڵڰ˸<DAB0>ʱ<EFBFBD><CAB1><EFBFBD>½<EFBFBD><C2BD><EFBFBD>, оƬ<D0BE>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ACK<43>ź<EFBFBD>,  <20><>DIO<49>ܽ<EFBFBD><DCBD><EFBFBD><EFBFBD><EFBFBD>,  <20>ڵھŸ<DABE>ʱ<EFBFBD>ӽ<EFBFBD><D3BD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD>ͷ<EFBFBD>DIO<49><4F><EFBFBD>ߡ<EFBFBD>
// <20><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD>ɹ<EFBFBD>
//     	  -1<><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>ʧ<EFBFBD><CAA7>

int WaitI2CAck(void)
{
	int timout;

	SetTM1637CLKLow();	// <20>ھŸ<DABE><C5B8>½<EFBFBD><C2BD><EFBFBD>

	SetTM1637DIOIn();	// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>

	TM1637Delay(5);			// <20>ڵڰ˸<DAB0>ʱ<EFBFBD><CAB1><EFBFBD>½<EFBFBD><C2BD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD>ʱ 5us, <20><>ʼ<EFBFBD>ж<EFBFBD> ACK <20>ź<EFBFBD>

	// <20>ȴ<EFBFBD> ACK
	timout = 100;
	do
	{
		if (GetTM1637DIOStatus() == 0)	// ACK <20>͵<EFBFBD>ƽ
		{
			break;
		}
		timout--;
		TM1637Delay(1);
	}while (timout > 0);

#if (1)		// <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
	if (timout <= 0)
	{
		SetI2CStop();
		printf("I2C No reply\r\n");
		return -1;
	}
#endif

	SetTM1637CLKHigh();		// <20><><EFBFBD>õ<EFBFBD>9<EFBFBD><39>CLKΪ<4B>ߵ<EFBFBD>ƽ, <20><><EFBFBD><EFBFBD>ACK״̬
	TM1637Delay(2);

	SetTM1637CLKLow();		// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD>͵<EFBFBD>ƽ,

	return 0;
}

// дһ<D0B4><D2BB><EFBFBD>ֽ<EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CLK<4C>ĵ͵<C4B5>ƽʱ<C6BD><CAB1><EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD>CLK<4C>ĸߵ<C4B8>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD>䣨<EFBFBD><E4A3A8><EFBFBD>ܱ仯<DCB1><E4BBAF>
// ÿ<><C3BF><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>, оƬ<D0BE>ڲ<EFBFBD><DAB2>ڵڰ˸<DAB0>ʱ<EFBFBD><CAB1><EFBFBD>½<EFBFBD><C2BD>ز<EFBFBD><D8B2><EFBFBD>һ<EFBFBD><D2BB>ACK
void WriteI2CByte(u8 dat)
{
	int i;
	SetTM1637DIOOut();
	for (i = 0; i < 8; i++)
    {
    	SetTM1637CLKLow();		// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD>͵<EFBFBD>ƽ, ׼<><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        if ((dat & 0x01) != 0) 	// TM1637 <20><>λ<EFBFBD><CEBB>ǰ, <20>ͱ<EFBFBD>׼I2C<32><43><EFBFBD><EFBFBD>ͬ
        {
        	SetTM1637DIOHigh();
        }
        else
        {
        	SetTM1637DIOLow();
        }

        TM1637Delay(3);
    	dat >>= 1;
    	SetTM1637CLKHigh();		// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD>ߵ<EFBFBD>ƽ, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    	TM1637Delay(3);
    }
}

// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
u8 ReadI2CByte(void)
{
	int i;
	u8 dat = 0;
	SetTM1637DIOIn();			// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>״̬

	for (i = 0; i < 8; i++)
    {
    	SetTM1637CLKLow();		// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD>͵<EFBFBD>ƽ, ׼<><D7BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    	dat >>= 1;
    	TM1637Delay(3);	// 4
    	SetTM1637CLKHigh();		// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD>ߵ<EFBFBD>ƽ, <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>

    	if ((GetTM1637DIOStatus()) != 0) 	// TM1637 <20><>λ<EFBFBD><CEBB>ǰ, <20>ͱ<EFBFBD>׼I2C<32><43><EFBFBD><EFBFBD>ͬ
        {
    		dat |= 0x80;
        }
    	TM1637Delay(3);	// 4
    }
    return dat;
}

//---------------------------------------------------------
// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>ʱ<EFBFBD><CAB1>Ƶ<EFBFBD><C6B5>ӦС<D3A6><D0A1> 250K<30><4B><EFBFBD>ȶ<EFBFBD><C8B6><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
// S0<53><30>S1<53><31>S2<53><32>K1<4B><31>K2 Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>
u8 TM1637ReadKey(void)
{
	u8 keyval;

	// command
	SetI2CStart();	// <20><>ʼλ
	WriteI2CByte(DATA_CMD_BITS|READ_KEY_VAL);	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	WaitI2CAck();	// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ

	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶ<EFBFBD>ȡ
	keyval = ReadI2CByte();		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>

	WaitI2CAck();	// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ
	SetI2CStop();	// <20><><EFBFBD><EFBFBD>

	switch (keyval)
	{
		case KEY_K1SG1:
		case KEY_K1SG2:
		case KEY_K1SG3:
		case KEY_K1SG4:
		case KEY_K1SG5:
		case KEY_K1SG6:
		case KEY_K1SG7:
		case KEY_K1SG8:

		case KEY_K2SG1:
		case KEY_K2SG2:
		case KEY_K2SG3:
		case KEY_K2SG4:
		case KEY_K2SG5:
		case KEY_K2SG6:
		case KEY_K2SG7:
		case KEY_K2SG8:
			break;
		default:
			keyval = KEY_NONE;
	}
    return keyval;
}

// д<><D0B4>ʾ<EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>(<28><>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>)
void TM1637WriteLedData(u8 baddr, u8 * pBuff, u8 disp)
{
	if (baddr < LED_REG1_ADDR || baddr > LED_REG6_ADDR || pBuff == NULL)
	{
		return;
	}

//	printf("TM1637WriteLedData begin\r\n");

	// command1 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	//	printf("command1\r\n");

	SetI2CStart();	// <20><>ʼλ
	WriteI2CByte(DATA_CMD_BITS|WRITE_LED_REG|ADDR_AUTO_INC);	// д<><D0B4><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD>ʾ<EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>, <20><>ַ<EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>
	WaitI2CAck();	// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ
	SetI2CStop();	// <20><><EFBFBD><EFBFBD>

	// command2 <20><><EFBFBD>õ<EFBFBD>ַ
	//	printf("command2\r\n");
	SetI2CStart();	// <20><>ʼλ
	WriteI2CByte(ADDR_CMD_BITS|LED_REG_BEG_ADDR);	// дΪ<D0B4><CEAA>ʼ<EFBFBD><CABC>ַ
	WaitI2CAck();	// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ

	// Data1~N<><4E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>
	//printf("send data\r\n");
	while (baddr <= LED_REG6_ADDR)
	{
		//printf("data=0x%x\r\n", *pBuff);
		WriteI2CByte(*pBuff);	// д<><D0B4>LED<45><44><EFBFBD><EFBFBD>
		WaitI2CAck();			// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ
		pBuff++;
		baddr++;
	}
	SetI2CStop();	// <20><><EFBFBD><EFBFBD>

	//	printf("command3\r\n");
	// command3 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
	SetI2CStart();	// <20><>ʼλ
	WriteI2CByte(DISP_CTRL_BITS|(disp & 0x0f));	// д<><D0B4>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	WaitI2CAck();	// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ
	SetI2CStop();	// <20><><EFBFBD><EFBFBD>

	//	printf("TM1637WriteLedData end\r\n");
}

// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾģʽ
// <20><><EFBFBD>غ<EFBFBD><D8BA><EFBFBD><EFBFBD><EFBFBD>
void TM1637SetLedDisp(u8 disp)
{
	SetI2CStart();	// <20><>ʼλ
	WriteI2CByte(DISP_CTRL_BITS|(disp & 0x0f));	// д<><D0B4>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	WaitI2CAck();	// <20>ȴ<EFBFBD><C8B4><EFBFBD>Ӧ
	SetI2CStop();	// <20><><EFBFBD><EFBFBD>
}


#endif