362 lines
8.1 KiB
C
362 lines
8.1 KiB
C
/*
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*Copyright ,2023 , NANOCHAP
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*File name: ENS1_I2C.C
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*Author:
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*Version: V1.0
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*Date: 2023-11-
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*Description:
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*Function List:
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History:
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1.V1.0
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Date:
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Author:
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Modification: 初版
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*/
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#include "ENS1_IIC.h"
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IIC_ConfigStructure IIC0_Config =
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{
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.MODE = IIC_SLAVE ,
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.OWN_ADDRESS = 0x78 ,
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.ACK_EN = true ,
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.IIC_SPEED = IIC_STARDARD_MODE_10K ,
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};
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IIC_ConfigStructure IIC1_Config =
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{
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.MODE = IIC_SLAVE ,
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.OWN_ADDRESS = 0x78 ,
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.ACK_EN = true ,
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.IIC_SPEED = IIC_STARDARD_MODE_10K ,
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};
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//bus error 判断（ITERREN使能）
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bool IIC_BUS_ERROR(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 8)&0x1) ? true :false);}
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//应答错误判断
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bool IIC_ACK_ERROR(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 10)&0x1) ? true :false);}
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//仲裁
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bool IIC_ARBITRAT_ERROR(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 9)&0x1) ? true :false);}
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//溢出/下溢错误
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bool IIC_OVERRUN_ERROR(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 11)&0x1) ? true :false);}
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//ITEVFEN使能后有如下事件
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//起始状态，起始位发送（主机模式）
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bool IIC_SB_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS)&0x1) ? true :false);}
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//地址发送（主机模式） / 地址匹配（从机事件）
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bool IIC_ADDR_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 1)&0x1) ? true :false);}
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//主机模式下，主机已发送10bit地址数据的第一个字节！！！
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bool IIC_ADD10_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 3)&0x1) ? true :false);}
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//从机模式下，停止条件被接收到
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bool IIC_STOPF_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 4)&0x1) ? true :false);}
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//数据字节传输成功
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bool IIC_BTF_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 2)&0x1) ? true :false);}
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//ITEVFEN 且 ITBUFEN 使能后，有如下事件
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//数据寄存器非空（接受器读到数据）
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bool IIC_RxNE_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 5)&0x1) ? true :false);}
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//数据寄存器空（传输完数据）
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bool IIC_TxE_EVENT(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 6)&0x1) ? true :false);}
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//总线状态：繁忙与否
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uint8_t IIC_Bus_BUSY(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (uint8_t)(((CMSDK_I2Cx->I2C_STS >> 13)&0x1) ? 1 :0);};
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//模式确认
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bool IIC_MASTER_MODE(CMSDK_I2C_TypeDef* CMSDK_I2Cx){return (bool)(((CMSDK_I2Cx->I2C_STS >> 12)&0x1) ? true :false);}
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uint8_t IIC_Config_init(CMSDK_I2C_TypeDef* CMSDK_I2Cx ,IIC_ConfigStructure* IIC_Para )
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{
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if(CMSDK_I2Cx == CMSDK_I2C0)
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{
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GPIO_AltFunction(GPIO_6 , ALT_FUNC1);
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GPIO_AltFunction(GPIO_7 , ALT_FUNC1);
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}
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else if(CMSDK_I2Cx == CMSDK_I2C1)
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{
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GPIO_AltFunction(GPIO_8 , ALT_FUNC2);
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GPIO_AltFunction(GPIO_9 , ALT_FUNC2);
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}
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if(IIC_Para->MODE == IIC_SLAVE)
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{
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// CMSDK_I2Cx->I2C_CR2|=(1<<7);//|(1<<8);//中断使能--bit8：buffer中断 / bit7：事件中断 / bit6：错误中断
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CMSDK_I2Cx->I2C_CR1|=(1);
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CMSDK_I2Cx->I2C_OAR = IIC_Para->OWN_ADDRESS ;
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if(IIC_Para->ACK_EN == true)
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CMSDK_I2Cx->I2C_CR1 |= (1<<5);
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}
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else
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{
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/*
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IIC master transmitter:
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IIC_CR2:配置中断时钟频率
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IIC_CR1:使能IIC接口
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IIC_CR1:配置START 位 IIC主机
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*/
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CMSDK_I2Cx->I2C_CR2 |= IIC_Para->IIC_SPEED ;
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CMSDK_I2Cx->I2C_CR1 |= (1) ;
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CMSDK_I2Cx->I2C_OAR = IIC_Para->OWN_ADDRESS ;
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if(IIC_Para->ACK_EN == true)
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CMSDK_I2Cx->I2C_CR1 |= (1<<5);
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}
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return 0;
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}
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void IIC_ITConfig(CMSDK_I2C_TypeDef* CMSDK_I2Cx ,uint16_t IIC_IT_SEL ,FunctionalState NewState)
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{
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if(CMSDK_I2Cx == CMSDK_I2C1){
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CMSDK_I2C1->I2C_CR2 |= IIC_IT_SEL;
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NVIC_DisableIRQ(I2C1_Event_IRQn);
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NVIC_ClearPendingIRQ(I2C1_Event_IRQn);
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NVIC_DisableIRQ(I2C1_Error_IRQn);
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NVIC_ClearPendingIRQ(I2C1_Error_IRQn);
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if(NewState == ENABLE)
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NVIC_EnableIRQ(I2C1_Event_IRQn);
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}
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else if(CMSDK_I2Cx == CMSDK_I2C0){
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CMSDK_I2C0->I2C_CR2 |= IIC_IT_SEL;
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NVIC_DisableIRQ(I2C0_Event_IRQn);
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NVIC_ClearPendingIRQ(I2C0_Event_IRQn);
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NVIC_DisableIRQ(I2C0_Error_IRQn);
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NVIC_ClearPendingIRQ(I2C0_Error_IRQn);
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if(NewState == ENABLE)
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NVIC_EnableIRQ(I2C0_Event_IRQn);
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}
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}
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void IIC_Cmd(CMSDK_I2C_TypeDef* CMSDK_I2Cx ,FunctionalState NewState) //使能IIC外设
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{
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if(CMSDK_I2Cx ==CMSDK_I2C0)
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{
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PCLK_Enable(I2C0_PCLK_EN);
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}
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else if(CMSDK_I2Cx ==CMSDK_I2C1)
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{
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PCLK_Enable(I2C1_PCLK_EN);
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}
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else
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{
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}
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if(NewState == ENABLE)
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CMSDK_I2Cx->I2C_CR1 |= (1);
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else
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CMSDK_I2Cx->I2C_CR1 &=~ (1);
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}
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void IIC_GenerateSTART(CMSDK_I2C_TypeDef* CMSDK_I2Cx)
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{
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while(IIC_Bus_BUSY(CMSDK_I2Cx));
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CMSDK_I2Cx->I2C_CR1 |= (1<<3);
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}
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void IIC_GenerateSTOP(CMSDK_I2C_TypeDef* CMSDK_I2Cx)
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{
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CMSDK_I2Cx->I2C_CR1 |= (1<<4);
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}
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//general call 用于向总线所有设备发送消息，用于初始化从设备与设备同步
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//主设备通过向总线发送0x00地址来触发GENERAL CALL
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void IIC_GeneralCallCmd(CMSDK_I2C_TypeDef* CMSDK_I2Cx)
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{
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}
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void IIC_Send7bitAddress(CMSDK_I2C_TypeDef* CMSDK_I2Cx ,uint8_t Address)
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{
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CMSDK_I2Cx->I2C_DR = Address ;
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}
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void IIC_SendData(CMSDK_I2C_TypeDef* CMSDK_I2Cx , uint8_t data)
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{
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CMSDK_I2Cx->I2C_DR = data;
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while(IIC_BTF_EVENT(CMSDK_I2Cx) == false); //字节传输完成
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}
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uint8_t IIC_ReadData(CMSDK_I2C_TypeDef* CMSDK_I2Cx)
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{
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return CMSDK_I2Cx->I2C_DR;
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}
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void I2C0_Event_Handler(void)
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{
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NVIC_ClearPendingIRQ(I2C0_Event_IRQn);
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if(IIC_MASTER_MODE(CMSDK_I2C0) == TRUE)
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{
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if(IIC_SB_EVENT(CMSDK_I2C0) == true )
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{
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return ;
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}
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if(IIC_ADDR_EVENT(CMSDK_I2C0) == true )
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{
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return ;
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}
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if(IIC_ADD10_EVENT(CMSDK_I2C0) == true)
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{
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return;
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}
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}
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else
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{
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if(IIC_ADDR_EVENT(CMSDK_I2C0) == true)
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{
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return ;
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}
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if(IIC_STOPF_EVENT(CMSDK_I2C0) == true)
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{
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//如果不再接收，则关闭IIC!!!
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IIC_Cmd(CMSDK_I2C0 ,DISABLE) ;
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CMSDK_I2C0->I2C_CR2|=(1<<7); //中断使能--bit8：buffer中断 / bit7：事件中断 / bit6：错误中断
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CMSDK_I2C0->I2C_CR1|=(1);
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CMSDK_I2C0->I2C_OAR = 0X78 ;
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CMSDK_I2C0->I2C_CR1 |= (1<<5);
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IIC_Cmd(CMSDK_I2C0 ,ENABLE) ;
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return ;
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}
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}
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if(IIC_BTF_EVENT(CMSDK_I2C0) == true)
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{
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}
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if(IIC_RxNE_EVENT(CMSDK_I2C0) == true)
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{
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uint8_t read_data = (uint8_t)(CMSDK_I2C0->I2C_DR & 0xff);
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printf("%d\n", read_data);
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}
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if(IIC_TxE_EVENT(CMSDK_I2C0) == true)
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{
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}
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return ;
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}
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void I2C0_Error_Handler(void)
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{
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NVIC_ClearPendingIRQ(I2C0_Error_IRQn);
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if(IIC_BUS_ERROR(CMSDK_I2C0) == true)
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{
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printf("bus error\n");
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return ;
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}
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if(IIC_ACK_ERROR(CMSDK_I2C0) == true)
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{
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printf("IIC_ACK_ERROR\n");
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return ;
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}
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if(IIC_ARBITRAT_ERROR(CMSDK_I2C0) == true)
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{
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printf("IIC_ARBITRAT_ERROR\n");
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return ;
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}
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if(IIC_OVERRUN_ERROR(CMSDK_I2C0) == true)
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{
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printf("IIC_OVERRUN_ERROR\n");
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return ;
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}
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}
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void I2C1_Event_Handler(void)
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{
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NVIC_ClearPendingIRQ(I2C1_Event_IRQn);
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if(IIC_MASTER_MODE(CMSDK_I2C1) == TRUE)
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{
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if(IIC_SB_EVENT(CMSDK_I2C1) == true )
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{
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return ;
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}
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if(IIC_ADDR_EVENT(CMSDK_I2C1) == true )
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{
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return;
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}
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if(IIC_ADD10_EVENT(CMSDK_I2C1) == true)
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{
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return;
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}
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}
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else
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{
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if(IIC_ADDR_EVENT(CMSDK_I2C1) == true) //作为从机，进入此处则地址匹配！
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{
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return ;
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}
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if(IIC_STOPF_EVENT(CMSDK_I2C1) == true) //作为从机，接收到STOP信号
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{
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printf("get stop\n");
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//如果不再接收，则关闭IIC!!!
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IIC_Cmd(CMSDK_I2C1 ,DISABLE) ;
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CMSDK_I2C1->I2C_CR2|=(1<<7); //中断使能--bit8：buffer中断 / bit7：事件中断 / bit6：错误中断
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CMSDK_I2C1->I2C_CR1|=(1);
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CMSDK_I2C1->I2C_OAR = 0X78 ;
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CMSDK_I2C1->I2C_CR1 |= (1<<5);
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IIC_Cmd(CMSDK_I2C1 ,ENABLE) ;
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IIC_ITConfig(CMSDK_I2C0,0 ,DISABLE);
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IIC_ITConfig(CMSDK_I2C0,0 ,ENABLE);
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return ;
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}
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}
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if(IIC_BTF_EVENT(CMSDK_I2C1) == true)
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{
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}
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if((IIC_RxNE_EVENT(CMSDK_I2C1) == true)) //作为从机，buffer非空，读IIC_DR中的数据
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{
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uint8_t read_data = (uint8_t)(CMSDK_I2C1->I2C_DR & 0xff);
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printf("%d\n", read_data);
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}
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if(IIC_TxE_EVENT(CMSDK_I2C1) == true)
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{
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}
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return ;
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}
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void I2C1_Error_Handler(void)
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{
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NVIC_ClearPendingIRQ(I2C1_Error_IRQn);
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if(IIC_BUS_ERROR(CMSDK_I2C1) == true)
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{
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printf("bus error\n");
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return ;
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}
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if(IIC_ACK_ERROR(CMSDK_I2C1) == true)
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{
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printf("IIC_ACK_ERROR\n");
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return ;
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}
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if(IIC_ARBITRAT_ERROR(CMSDK_I2C1) == true)
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{
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printf("IIC_ARBITRAT_ERROR\n");
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return ;
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}
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if(IIC_OVERRUN_ERROR(CMSDK_I2C1) == true)
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{
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printf("IIC_OVERRUN_ERROR\n");
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return ;
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}
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}
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