LQBMK|i2c\bsp_i2c.h

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已于 2024-12-04 19:36:56 修改

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文章标签：嵌入式硬件单片机

于 2024-10-30 06:55:16 首次发布

本文链接：https://blog.youkuaiyun.com/weixin_51370842/article/details/143354159

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//24C02的相关代码
void i2c_24c02_write(uint8_t *pucBuf, uint8_t ucAddr, uint8_t ucNum){
	I2CStart();
	I2CSendByte(0xa0);
	I2CWaitAck();
	
	I2CSendByte(ucAddr);	
	I2CWaitAck();
	
	while(ucNum--)
	{
		I2CSendByte(*pucBuf++);
		I2CWaitAck();	
	}
	I2CStop();
	delay1(500);	
}


void i2c_24c02_read(uint8_t *pucBuf, uint8_t ucAddr, uint8_t ucNum){
	I2CStart();
	I2CSendByte(0xa0);
	I2CWaitAck();
	
	I2CSendByte(ucAddr);	
	I2CWaitAck();
	
	I2CStart();
	I2CSendByte(0xa1);
	I2CWaitAck();
	
	while(ucNum--)
	{
		*pucBuf++ = I2CReceiveByte();
		if(ucNum)
			I2CSendAck();	
		else
			I2CSendNotAck();
	}
	I2CStop();	
}

//MCP4017的相关代码
void write_resistor(uint8_t value){
	I2CStart();
	I2CSendByte(0x5E);
	I2CWaitAck();
	
	I2CSendByte(value);
	I2CWaitAck();	
	I2CStop();	
}

uint8_t read_resistor(void){
	uint8_t value;
	I2CStart();
	I2CSendByte(0x5F);
	I2CWaitAck();
	
	value = I2CReceiveByte();
	I2CSendNotAck();	
	I2CStop();	
	
	return value;
}