24 lines
839 B
C
24 lines
839 B
C
#include "i2c.h"
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void I2C_Init_(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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I2C_InitTypeDef I2C_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);//GPIOB
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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I2C_DeInit(I2C1);
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I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
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I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
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I2C_InitStructure.I2C_OwnAddress1 = 0; //I2C_OAR1
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I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
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I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
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I2C_InitStructure.I2C_ClockSpeed = 400000; //400KHz
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I2C_Init(I2C1, &I2C_InitStructure);
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I2C_Cmd(I2C1, ENABLE);
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} |