1 | void InitI2C(void)
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2 | {
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3 | RCC_AHBPeriphClockCmd (RCC_AHBPeriph_GPIOB, ENABLE);
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4 | RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
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5 |
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6 | GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_1);
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7 | GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_1);
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8 |
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9 |
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10 | //Configure pins: SCL and SDA ------------------
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11 | GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_6 | GPIO_Pin_7);
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12 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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13 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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14 | GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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15 | GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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16 | GPIO_Init(GPIOB, &GPIO_InitStructure);
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17 |
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18 | I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Enable;
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19 | I2C_InitStructure.I2C_OwnAddress1 = 0x00;
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20 | I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
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21 | I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
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22 | //I2C_InitStructure.I2C_Timing = 0xA0120227;
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23 | I2C_InitStructure.I2C_Timing = 0x20310A0D;
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24 | I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
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25 |
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26 | I2C_Init(I2C1, &I2C_InitStructure);
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27 |
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28 | I2C_Cmd(I2C1, ENABLE);
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29 | }
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30 |
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31 | uint8_t WRiteReg(uint8_t data,uint8_t RegAdd)
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32 | {
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33 |
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34 | //while(I2C_GetFlagStatus(I2C1, I2C_ISR_BUSY) != RESET)
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35 |
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36 | I2C_GenerateSTART(I2C1, ENABLE);
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37 |
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38 | I2C_SendData(I2C1, 0xA2);
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39 |
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40 | I2C_SendData(I2C1, (uint8_t)RegAdd);
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41 |
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42 | //while(I2C_GetFlagStatus(I2C1, I2C_ISR_TC) == RESET)
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43 |
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44 | I2C_SendData(I2C1, (uint8_t)data);
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45 |
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46 | //while(I2C_GetFlagStatus(I2C1, I2C_ISR_TC) == RESET)
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47 |
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48 | I2C_GenerateSTOP(I2C1, ENABLE);
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49 |
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50 | //while(I2C_GetFlagStatus(I2C1, I2C_FLAG_STOPF));
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51 |
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52 | return SUCCESS;
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53 | }
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