使用ch32v307的i2c會一直卡在while(!I2C_CheckEvent(I2Cx, I2C_EVENT_MASTER_MODE_SELECT));這里。
參考ch32v203使用IIC,一直卡在I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED這步驟 - 沁恒微電子社區(qū) (wch.cn)里的方式也沒有解決。
I2C初始化代碼為：
void?i2c1_init(u32?bound,?u16?address)
{
????GPIO_InitTypeDef?GPIO_InitStructure={0};
????I2C_InitTypeDef?I2C_InitTSturcture={0};
????//RCC_APB2PeriphClockCmd(?RCC_APB2Periph_GPIOB?|?RCC_APB2Periph_AFIO,?ENABLE?);
????RCC_APB2PeriphClockCmd(?RCC_APB2Periph_GPIOB,?ENABLE?);
????RCC_APB2PeriphClockCmd(?RCC_APB2Periph_AFIO,?ENABLE?);
????RCC_APB1PeriphClockCmd(?RCC_APB1Periph_I2C1,?ENABLE?);
????I2C_DeInit(I2C1);
????GPIO_PinRemapConfig(GPIO_Remap_I2C1,?ENABLE);
????GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_8;
????GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_AF_OD;
????GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
????GPIO_Init(?GPIOB,?&GPIO_InitStructure?);
????GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_9;
????GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_AF_OD;
????GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
????GPIO_Init(?GPIOB,?&GPIO_InitStructure?);
????I2C_InitTSturcture.I2C_ClockSpeed?=?bound;
????I2C_InitTSturcture.I2C_Mode?=?I2C_Mode_I2C;
????I2C_InitTSturcture.I2C_DutyCycle?=?I2C_DutyCycle_2;//I2C_DutyCycle_16_9;//
????I2C_InitTSturcture.I2C_OwnAddress1?=?address;
????I2C_InitTSturcture.I2C_Ack?=?I2C_Ack_Enable;
????I2C_InitTSturcture.I2C_AcknowledgedAddress?=?I2C_AcknowledgedAddress_7bit;
????I2C_Init(?I2C1,?&I2C_InitTSturcture?);
????I2C_Cmd(?I2C1,?ENABLE?);
????I2C_AcknowledgeConfig(?I2C1,?ENABLE?);
}
i2c1_init(100000,?CH32_I2C_ADDR);
讀取代碼為：
uint8_t?I2C_RegRead(I2C_TypeDef*?I2Cx,?uint8_t?deviceAddr,?uint8_t?data)
{
????uint8_t?value;
????if?(NULL?==?I2Cx)?return?-1;
????printf("[lbc_info]?%04d?%s?1\r\n",?__LINE__,?__func__);
????while(I2C_GetFlagStatus(I2Cx,?I2C_FLAG_BUSY)?!=?RESET);
????I2C_GenerateSTART(I2Cx,?ENABLE);
????printf("[lbc_info]?%04d?%s?2\r\n",?__LINE__,?__func__);
????while(!I2C_CheckEvent(I2Cx,?I2C_EVENT_MASTER_MODE_SELECT));
????I2C_Send7bitAddress(I2Cx,??deviceAddr,?I2C_Direction_Transmitter);
????printf("[lbc_info]?%04d?%s?3\r\n",?__LINE__,?__func__);
????Delay_Ms(10);
????while(!I2C_CheckEvent(I2Cx,?I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
????printf("[lbc_info]?%04d?%s?4\r\n",?__LINE__,?__func__);
????I2C_SendData(I2Cx,?data);
????while(!I2C_CheckEvent(I2Cx,?I2C_EVENT_MASTER_BYTE_TRANSMITTED));
????printf("[lbc_info]?%04d?%s?5\r\n",?__LINE__,?__func__);
????I2C_GenerateSTART(I2Cx,?ENABLE);
????printf("[lbc_info]?%04d?%s?6\r\n",?__LINE__,?__func__);
????while(!I2C_CheckEvent(I2Cx,?I2C_EVENT_MASTER_MODE_SELECT));
????I2C_Send7bitAddress(I2Cx,?deviceAddr,?I2C_Direction_Receiver);
????printf("[lbc_info]?%04d?%s?7\r\n",?__LINE__,?__func__);
????while(!I2C_CheckEvent(I2Cx,?I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
????printf("[lbc_info]?%04d?%s?8\r\n",?__LINE__,?__func__);
????while(I2C_GetFlagStatus(I2C1,?I2C_FLAG_RXNE)?==??RESET?);
????printf("[lbc_info]?%04d?%s?9\r\n",?__LINE__,?__func__);
????I2C_AcknowledgeConfig(I2Cx,?DISABLE);
????value?=?I2C_ReceiveData(I2Cx);
????I2C_GenerateSTOP(I2Cx,?ENABLE);
????return?value;
}
uint16_t?tmp116_read_id(void)
{
????uint16_t?temp;
????temp?=?I2C_RegRead(I2C1,?TMP116_R_ADDR,?TMP116_DEVICE_ID_ADDR);
????printf("[lbc_info]?tmp116?device?id:0x%X.\r\n",?temp);
????return?temp;
}
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