| /****************************************************************************//** | |
| * @file usci_i2c.c | |
| * @version V3.00 | |
| * $Revision: 1 $ | |
| * $Date: 16/07/07 7:50p $ | |
| * @brief M2351 series USCI I2C(UI2C) driver source file | |
| * | |
| * @note | |
| * Copyright (C) 2016 Nuvoton Technology Corp. All rights reserved. | |
| *****************************************************************************/ | |
| #include "NuMicro.h" | |
| /** @addtogroup Standard_Driver Standard Driver | |
| @{ | |
| */ | |
| /** @addtogroup USCI_I2C_Driver USCI_I2C Driver | |
| @{ | |
| */ | |
| /** @addtogroup USCI_I2C_EXPORTED_FUNCTIONS USCI_I2C Exported Functions | |
| @{ | |
| */ | |
| /** | |
| * @brief This function makes USCI_I2C module be ready and set the wanted bus clock | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32BusClock The target bus speed of USCI_I2C module. | |
| * | |
| * @return Actual USCI_I2C bus clock frequency. | |
| * | |
| * @details Enable USCI_I2C module and configure USCI_I2C module(bus clock, data format). | |
| */ | |
| uint32_t UI2C_Open(UI2C_T *ui2c, uint32_t u32BusClock) | |
| { | |
| uint32_t u32ClkDiv; | |
| uint32_t u32Pclk; | |
| if((ui2c == UI2C1) || (ui2c == UI2C1_NS)) | |
| { | |
| u32Pclk = CLK_GetPCLK1Freq(); | |
| } | |
| else | |
| { | |
| u32Pclk = CLK_GetPCLK0Freq(); | |
| } | |
| u32ClkDiv = (uint32_t)((((((u32Pclk / 2u) * 10u) / (u32BusClock)) + 5u) / 10u) - 1u); /* Compute proper divider for USCI_I2C clock */ | |
| /* Enable USCI_I2C protocol */ | |
| ui2c->CTL &= ~UI2C_CTL_FUNMODE_Msk; | |
| ui2c->CTL = 4u << UI2C_CTL_FUNMODE_Pos; | |
| /* Data format configuration */ | |
| /* 8 bit data length */ | |
| ui2c->LINECTL &= ~UI2C_LINECTL_DWIDTH_Msk; | |
| ui2c->LINECTL |= 8u << UI2C_LINECTL_DWIDTH_Pos; | |
| /* MSB data format */ | |
| ui2c->LINECTL &= ~UI2C_LINECTL_LSB_Msk; | |
| /* Set USCI_I2C bus clock */ | |
| ui2c->BRGEN &= ~UI2C_BRGEN_CLKDIV_Msk; | |
| ui2c->BRGEN |= (u32ClkDiv << UI2C_BRGEN_CLKDIV_Pos); | |
| ui2c->PROTCTL |= UI2C_PROTCTL_PROTEN_Msk; | |
| return (u32Pclk / ((u32ClkDiv + 1u) << 1u)); | |
| } | |
| /** | |
| * @brief This function closes the USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * | |
| * @return None | |
| * | |
| * @details Close USCI_I2C protocol function. | |
| */ | |
| void UI2C_Close(UI2C_T *ui2c) | |
| { | |
| /* Disable USCI_I2C function */ | |
| ui2c->CTL &= ~UI2C_CTL_FUNMODE_Msk; | |
| } | |
| /** | |
| * @brief This function clears the time-out flag | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * | |
| * @return None | |
| * | |
| * @details Clear time-out flag when time-out flag is set. | |
| */ | |
| void UI2C_ClearTimeoutFlag(UI2C_T *ui2c) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_TOIF_Msk; | |
| } | |
| /** | |
| * @brief This function sets the control bit of the USCI_I2C module. | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8Start Set START bit to USCI_I2C module. | |
| * @param[in] u8Stop Set STOP bit to USCI_I2C module. | |
| * @param[in] u8Ptrg Set PTRG bit to USCI_I2C module. | |
| * @param[in] u8Ack Set ACK bit to USCI_I2C module. | |
| * | |
| * @return None | |
| * | |
| * @details The function set USCI_I2C control bit of USCI_I2C bus protocol. | |
| */ | |
| void UI2C_Trigger(UI2C_T *ui2c, uint8_t u8Start, uint8_t u8Stop, uint8_t u8Ptrg, uint8_t u8Ack) | |
| { | |
| uint32_t u32Reg = 0u; | |
| uint32_t u32Val = ui2c->PROTCTL & ~(UI2C_PROTCTL_STA_Msk | UI2C_PROTCTL_STO_Msk | UI2C_PROTCTL_AA_Msk); | |
| if(u8Start) | |
| { | |
| u32Reg |= UI2C_PROTCTL_STA_Msk; | |
| } | |
| if(u8Stop) | |
| { | |
| u32Reg |= UI2C_PROTCTL_STO_Msk; | |
| } | |
| if(u8Ptrg) | |
| { | |
| u32Reg |= UI2C_PROTCTL_PTRG_Msk; | |
| } | |
| if(u8Ack) | |
| { | |
| u32Reg |= UI2C_PROTCTL_AA_Msk; | |
| } | |
| ui2c->PROTCTL = u32Val | u32Reg; | |
| } | |
| /** | |
| * @brief This function disables the interrupt of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32Mask The combination of all related interrupt enable bits. | |
| * Each bit corresponds to an interrupt enable bit. | |
| * This parameter decides which interrupts will be disabled. It is combination of: | |
| * - \ref UI2C_TO_INT_MASK | |
| * - \ref UI2C_STAR_INT_MASK | |
| * - \ref UI2C_STOR_INT_MASK | |
| * - \ref UI2C_NACK_INT_MASK | |
| * - \ref UI2C_ARBLO_INT_MASK | |
| * - \ref UI2C_ERR_INT_MASK | |
| * - \ref UI2C_ACK_INT_MASK | |
| * | |
| * @return None | |
| * | |
| * @details The function is used to disable USCI_I2C bus interrupt events. | |
| */ | |
| void UI2C_DisableInt(UI2C_T *ui2c, uint32_t u32Mask) | |
| { | |
| /* Disable time-out interrupt flag */ | |
| if((u32Mask & UI2C_TO_INT_MASK) == UI2C_TO_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_TOIEN_Msk; | |
| } | |
| /* Disable start condition received interrupt flag */ | |
| if((u32Mask & UI2C_STAR_INT_MASK) == UI2C_STAR_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_STARIEN_Msk; | |
| } | |
| /* Disable stop condition received interrupt flag */ | |
| if((u32Mask & UI2C_STOR_INT_MASK) == UI2C_STOR_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_STORIEN_Msk; | |
| } | |
| /* Disable non-acknowledge interrupt flag */ | |
| if((u32Mask & UI2C_NACK_INT_MASK) == UI2C_NACK_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_NACKIEN_Msk; | |
| } | |
| /* Disable arbitration lost interrupt flag */ | |
| if((u32Mask & UI2C_ARBLO_INT_MASK) == UI2C_ARBLO_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_ARBLOIEN_Msk; | |
| } | |
| /* Disable error interrupt flag */ | |
| if((u32Mask & UI2C_ERR_INT_MASK) == UI2C_ERR_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_ERRIEN_Msk; | |
| } | |
| /* Disable acknowledge interrupt flag */ | |
| if((u32Mask & UI2C_ACK_INT_MASK) == UI2C_ACK_INT_MASK) | |
| { | |
| ui2c->PROTIEN &= ~UI2C_PROTIEN_ACKIEN_Msk; | |
| } | |
| } | |
| /** | |
| * @brief This function enables the interrupt of USCI_I2C module. | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32Mask The combination of all related interrupt enable bits. | |
| * Each bit corresponds to a interrupt enable bit. | |
| * This parameter decides which interrupts will be enabled. It is combination of: | |
| * - \ref UI2C_TO_INT_MASK | |
| * - \ref UI2C_STAR_INT_MASK | |
| * - \ref UI2C_STOR_INT_MASK | |
| * - \ref UI2C_NACK_INT_MASK | |
| * - \ref UI2C_ARBLO_INT_MASK | |
| * - \ref UI2C_ERR_INT_MASK | |
| * - \ref UI2C_ACK_INT_MASK | |
| * @return None | |
| * | |
| * @details The function is used to enable USCI_I2C bus interrupt events. | |
| */ | |
| void UI2C_EnableInt(UI2C_T *ui2c, uint32_t u32Mask) | |
| { | |
| /* Enable time-out interrupt flag */ | |
| if((u32Mask & UI2C_TO_INT_MASK) == UI2C_TO_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_TOIEN_Msk; | |
| } | |
| /* Enable start condition received interrupt flag */ | |
| if((u32Mask & UI2C_STAR_INT_MASK) == UI2C_STAR_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_STARIEN_Msk; | |
| } | |
| /* Enable stop condition received interrupt flag */ | |
| if((u32Mask & UI2C_STOR_INT_MASK) == UI2C_STOR_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_STORIEN_Msk; | |
| } | |
| /* Enable non-acknowledge interrupt flag */ | |
| if((u32Mask & UI2C_NACK_INT_MASK) == UI2C_NACK_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_NACKIEN_Msk; | |
| } | |
| /* Enable arbitration lost interrupt flag */ | |
| if((u32Mask & UI2C_ARBLO_INT_MASK) == UI2C_ARBLO_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_ARBLOIEN_Msk; | |
| } | |
| /* Enable error interrupt flag */ | |
| if((u32Mask & UI2C_ERR_INT_MASK) == UI2C_ERR_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_ERRIEN_Msk; | |
| } | |
| /* Enable acknowledge interrupt flag */ | |
| if((u32Mask & UI2C_ACK_INT_MASK) == UI2C_ACK_INT_MASK) | |
| { | |
| ui2c->PROTIEN |= UI2C_PROTIEN_ACKIEN_Msk; | |
| } | |
| } | |
| /** | |
| * @brief This function returns the real bus clock of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * | |
| * @return Actual USCI_I2C bus clock frequency. | |
| * | |
| * @details The function returns the actual USCI_I2C module bus clock. | |
| */ | |
| uint32_t UI2C_GetBusClockFreq(UI2C_T *ui2c) | |
| { | |
| uint32_t u32Divider; | |
| uint32_t u32Pclk; | |
| if((ui2c == UI2C1) || (ui2c == UI2C1_NS)) | |
| { | |
| u32Pclk = CLK_GetPCLK1Freq(); | |
| } | |
| else | |
| { | |
| u32Pclk = CLK_GetPCLK0Freq(); | |
| } | |
| u32Divider = (ui2c->BRGEN & UI2C_BRGEN_CLKDIV_Msk) >> UI2C_BRGEN_CLKDIV_Pos; | |
| return (u32Pclk / ((u32Divider + 1u) << 1u)); | |
| } | |
| /** | |
| * @brief This function sets bus clock frequency of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32BusClock The target bus speed of USCI_I2C module. | |
| * | |
| * @return Actual USCI_I2C bus clock frequency. | |
| * | |
| * @details Use this function set USCI_I2C bus clock frequency and return actual bus clock. | |
| */ | |
| uint32_t UI2C_SetBusClockFreq(UI2C_T *ui2c, uint32_t u32BusClock) | |
| { | |
| uint32_t u32ClkDiv; | |
| uint32_t u32Pclk; | |
| if((ui2c == UI2C1) || (ui2c == UI2C1_NS)) | |
| { | |
| u32Pclk = CLK_GetPCLK1Freq(); | |
| } | |
| else | |
| { | |
| u32Pclk = CLK_GetPCLK0Freq(); | |
| } | |
| u32ClkDiv = (uint32_t)((((((u32Pclk / 2u) * 10u) / (u32BusClock)) + 5u) / 10u) - 1u); /* Compute proper divider for USCI_I2C clock */ | |
| /* Set USCI_I2C bus clock */ | |
| ui2c->BRGEN &= ~UI2C_BRGEN_CLKDIV_Msk; | |
| ui2c->BRGEN |= (u32ClkDiv << UI2C_BRGEN_CLKDIV_Pos); | |
| return (u32Pclk / ((u32ClkDiv + 1u) << 1u)); | |
| } | |
| /** | |
| * @brief This function gets the interrupt flag of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32Mask The combination of all related interrupt sources. | |
| * Each bit corresponds to a interrupt source. | |
| * This parameter decides which interrupt flags will be read. It is combination of: | |
| * - \ref UI2C_TO_INT_MASK | |
| * - \ref UI2C_STAR_INT_MASK | |
| * - \ref UI2C_STOR_INT_MASK | |
| * - \ref UI2C_NACK_INT_MASK | |
| * - \ref UI2C_ARBLO_INT_MASK | |
| * - \ref UI2C_ERR_INT_MASK | |
| * - \ref UI2C_ACK_INT_MASK | |
| * | |
| * @return Interrupt flags of selected sources. | |
| * | |
| * @details Use this function to get USCI_I2C interrupt flag when module occurs interrupt event. | |
| */ | |
| uint32_t UI2C_GetIntFlag(UI2C_T *ui2c, uint32_t u32Mask) | |
| { | |
| uint32_t u32IntFlag = 0U; | |
| uint32_t u32TmpValue; | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_TOIF_Msk; | |
| /* Check Time-out Interrupt Flag */ | |
| if((u32Mask & UI2C_TO_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_TO_INT_MASK; | |
| } | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_STARIF_Msk; | |
| /* Check Start Condition Received Interrupt Flag */ | |
| if((u32Mask & UI2C_STAR_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_STAR_INT_MASK; | |
| } | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_STORIF_Msk; | |
| /* Check Stop Condition Received Interrupt Flag */ | |
| if((u32Mask & UI2C_STOR_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_STOR_INT_MASK; | |
| } | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_NACKIF_Msk; | |
| /* Check Non-Acknowledge Interrupt Flag */ | |
| if((u32Mask & UI2C_NACK_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_NACK_INT_MASK; | |
| } | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_ARBLOIF_Msk; | |
| /* Check Arbitration Lost Interrupt Flag */ | |
| if((u32Mask & UI2C_ARBLO_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_ARBLO_INT_MASK; | |
| } | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_ERRIF_Msk; | |
| /* Check Error Interrupt Flag */ | |
| if((u32Mask & UI2C_ERR_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_ERR_INT_MASK; | |
| } | |
| u32TmpValue = ui2c->PROTSTS & UI2C_PROTSTS_ACKIF_Msk; | |
| /* Check Acknowledge Interrupt Flag */ | |
| if((u32Mask & UI2C_ACK_INT_MASK) && (u32TmpValue)) | |
| { | |
| u32IntFlag |= UI2C_ACK_INT_MASK; | |
| } | |
| return u32IntFlag; | |
| } | |
| /** | |
| * @brief This function clears the interrupt flag of USCI_I2C module. | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32Mask The combination of all related interrupt sources. | |
| * Each bit corresponds to a interrupt source. | |
| * This parameter decides which interrupt flags will be cleared. It is combination of: | |
| * - \ref UI2C_TO_INT_MASK | |
| * - \ref UI2C_STAR_INT_MASK | |
| * - \ref UI2C_STOR_INT_MASK | |
| * - \ref UI2C_NACK_INT_MASK | |
| * - \ref UI2C_ARBLO_INT_MASK | |
| * - \ref UI2C_ERR_INT_MASK | |
| * - \ref UI2C_ACK_INT_MASK | |
| * | |
| * @return None | |
| * | |
| * @details Use this function to clear USCI_I2C interrupt flag when module occurs interrupt event and set flag. | |
| */ | |
| void UI2C_ClearIntFlag(UI2C_T *ui2c, uint32_t u32Mask) | |
| { | |
| /* Clear Time-out Interrupt Flag */ | |
| if(u32Mask & UI2C_TO_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_TOIF_Msk; | |
| } | |
| /* Clear Start Condition Received Interrupt Flag */ | |
| if(u32Mask & UI2C_STAR_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_STARIF_Msk; | |
| } | |
| /* Clear Stop Condition Received Interrupt Flag */ | |
| if(u32Mask & UI2C_STOR_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_STORIF_Msk; | |
| } | |
| /* Clear Non-Acknowledge Interrupt Flag */ | |
| if(u32Mask & UI2C_NACK_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_NACKIF_Msk; | |
| } | |
| /* Clear Arbitration Lost Interrupt Flag */ | |
| if(u32Mask & UI2C_ARBLO_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_ARBLOIF_Msk; | |
| } | |
| /* Clear Error Interrupt Flag */ | |
| if(u32Mask & UI2C_ERR_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_ERRIF_Msk; | |
| } | |
| /* Clear Acknowledge Interrupt Flag */ | |
| if(u32Mask & UI2C_ACK_INT_MASK) | |
| { | |
| ui2c->PROTSTS = UI2C_PROTSTS_ACKIF_Msk; | |
| } | |
| } | |
| /** | |
| * @brief This function returns the data stored in data register of USCI_I2C module. | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * | |
| * @return USCI_I2C data. | |
| * | |
| * @details To read a byte data from USCI_I2C module receive data register. | |
| */ | |
| uint32_t UI2C_GetData(UI2C_T *ui2c) | |
| { | |
| return (ui2c->RXDAT); | |
| } | |
| /** | |
| * @brief This function writes a byte data to data register of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8Data The data which will be written to data register of USCI_I2C module. | |
| * | |
| * @return None | |
| * | |
| * @details To write a byte data to transmit data register to transmit data. | |
| */ | |
| void UI2C_SetData(UI2C_T *ui2c, uint8_t u8Data) | |
| { | |
| ui2c->TXDAT = u8Data; | |
| } | |
| /** | |
| * @brief Configure slave address and enable GC mode | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveNo Slave channel number [0/1] | |
| * @param[in] u16SlaveAddr The slave address. | |
| * @param[in] u8GCMode GC mode enable or not. Valid values are: | |
| * - \ref UI2C_GCMODE_ENABLE | |
| * - \ref UI2C_GCMODE_DISABLE | |
| * | |
| * @return None | |
| * | |
| * @details To configure USCI_I2C module slave address and GC mode. | |
| */ | |
| void UI2C_SetSlaveAddr(UI2C_T *ui2c, uint8_t u8SlaveNo, uint16_t u16SlaveAddr, uint8_t u8GCMode) | |
| { | |
| if(u8SlaveNo) | |
| { | |
| ui2c->DEVADDR1 = u16SlaveAddr; | |
| } | |
| else | |
| { | |
| ui2c->DEVADDR0 = u16SlaveAddr; | |
| } | |
| ui2c->PROTCTL = (ui2c->PROTCTL & ~UI2C_PROTCTL_GCFUNC_Msk) | u8GCMode; | |
| } | |
| /** | |
| * @brief Configure the mask bit of slave address. | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveNo Slave channle number [0/1] | |
| * @param[in] u16SlaveAddrMask The slave address mask. | |
| * | |
| * @return None | |
| * | |
| * @details To configure USCI_I2C module slave address mask bit. | |
| * @note The corresponding address bit is "Don't Care". | |
| */ | |
| void UI2C_SetSlaveAddrMask(UI2C_T *ui2c, uint8_t u8SlaveNo, uint16_t u16SlaveAddrMask) | |
| { | |
| if(u8SlaveNo) | |
| { | |
| ui2c->ADDRMSK1 = u16SlaveAddrMask; | |
| } | |
| else | |
| { | |
| ui2c->ADDRMSK0 = u16SlaveAddrMask; | |
| } | |
| } | |
| /** | |
| * @brief This function enables time-out function and configures timeout counter | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u32TimeoutCnt Timeout counter. Valid values are between 0~0x3FF. | |
| * | |
| * @return None | |
| * | |
| * @details To enable USCI_I2C bus time-out function and set time-out counter. | |
| */ | |
| void UI2C_EnableTimeout(UI2C_T *ui2c, uint32_t u32TimeoutCnt) | |
| { | |
| ui2c->PROTCTL = (ui2c->PROTCTL & ~UI2C_PROTCTL_TOCNT_Msk) | (u32TimeoutCnt << UI2C_PROTCTL_TOCNT_Pos); | |
| ui2c->BRGEN = (ui2c->BRGEN & ~UI2C_BRGEN_TMCNTSRC_Msk) | UI2C_BRGEN_TMCNTEN_Msk; | |
| } | |
| /** | |
| * @brief This function disables time-out function | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * | |
| * @return None | |
| * | |
| * @details To disable USCI_I2C bus time-out function. | |
| */ | |
| void UI2C_DisableTimeout(UI2C_T *ui2c) | |
| { | |
| ui2c->PROTCTL &= ~UI2C_PROTCTL_TOCNT_Msk; | |
| ui2c->BRGEN &= ~UI2C_BRGEN_TMCNTEN_Msk; | |
| } | |
| /** | |
| * @brief This function enables the wakeup function of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8WakeupMode The wake-up mode selection. Valid values are: | |
| * - \ref UI2C_DATA_TOGGLE_WK | |
| * - \ref UI2C_ADDR_MATCH_WK | |
| * | |
| * @return None | |
| * | |
| * @details To enable USCI_I2C module wake-up function. | |
| */ | |
| void UI2C_EnableWakeup(UI2C_T *ui2c, uint8_t u8WakeupMode) | |
| { | |
| ui2c->WKCTL = (ui2c->WKCTL & ~UI2C_WKCTL_WKADDREN_Msk) | (u8WakeupMode | UI2C_WKCTL_WKEN_Msk); | |
| } | |
| /** | |
| * @brief This function disables the wakeup function of USCI_I2C module | |
| * | |
| * @param[in] ui2c The pointer of the specified USCI_I2C module. | |
| * | |
| * @return None | |
| * | |
| * @details To disable USCI_I2C module wake-up function. | |
| */ | |
| void UI2C_DisableWakeup(UI2C_T *ui2c) | |
| { | |
| ui2c->WKCTL &= ~UI2C_WKCTL_WKEN_Msk; | |
| } | |
| /** | |
| * @brief Write a byte to Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] data Write a byte data to Slave | |
| * | |
| * @retval 0 Write data success | |
| * @retval 1 Write data fail, or bus occurs error events | |
| * | |
| * @details The function is used for USCI_I2C Master write a byte data to Slave. | |
| * | |
| */ | |
| uint8_t UI2C_WriteByte(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t data) | |
| { | |
| uint8_t u8Xfering = 1U, u8Err = 0U, u8Ctrl = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, data); /* Write data to UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| return (u8Err | u8Xfering); /* return (Success)/(Fail) status */ | |
| } | |
| /** | |
| * @brief Write multi bytes to Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] *data Pointer to array to write data to Slave | |
| * @param[in] u32wLen How many bytes need to write to Slave | |
| * | |
| * @return A length of how many bytes have been transmitted. | |
| * | |
| * @details The function is used for USCI_I2C Master write multi bytes data to Slave. | |
| * | |
| */ | |
| uint32_t UI2C_WriteMultiBytes(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t *data, uint32_t u32wLen) | |
| { | |
| uint8_t u8Xfering = 1U, u8Ctrl = 0U; | |
| uint32_t u32txLen = 0U; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(u32txLen < u32wLen) | |
| UI2C_SET_DATA(ui2c, data[u32txLen++]); /* Write data to UI2C_TXDAT */ | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_CTL register */ | |
| } | |
| return u32txLen; /* Return bytes length that have been transmitted */ | |
| } | |
| /** | |
| * @brief Specify a byte register address and write a byte to Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u8DataAddr Specify a address (1 byte) of data write to | |
| * @param[in] data A byte data to write it to Slave | |
| * | |
| * @retval 0 Write data success | |
| * @retval 1 Write data fail, or bus occurs error events | |
| * | |
| * @details The function is used for USCI_I2C Master specify a address that data write to in Slave. | |
| * | |
| */ | |
| uint8_t UI2C_WriteByteOneReg(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr, uint8_t data) | |
| { | |
| uint8_t u8Xfering = 1U, u8Err = 0U, u8Ctrl = 0U; | |
| uint32_t u32txLen = 0U; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(u32txLen == 0U) | |
| { | |
| UI2C_SET_DATA(ui2c, u8DataAddr); /* Write data address to UI2C_TXDAT */ | |
| u32txLen++; | |
| } | |
| else if(u32txLen == 1U) | |
| { | |
| UI2C_SET_DATA(ui2c, data); /* Write data to UI2C_TXDAT */ | |
| u32txLen++; | |
| } | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_CTL register */ | |
| } | |
| return (u8Err | u8Xfering); /* return (Success)/(Fail) status */ | |
| } | |
| /** | |
| * @brief Specify a byte register address and write multi bytes to Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u8DataAddr Specify a address (1 byte) of data write to | |
| * @param[in] *data Pointer to array to write data to Slave | |
| * @param[in] u32wLen How many bytes need to write to Slave | |
| * | |
| * @return A length of how many bytes have been transmitted. | |
| * | |
| * @details The function is used for USCI_I2C Master specify a byte address that multi data bytes write to in Slave. | |
| * | |
| */ | |
| uint32_t UI2C_WriteMultiBytesOneReg(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr, uint8_t *data, uint32_t u32wLen) | |
| { | |
| uint8_t u8Xfering = 1U, u8Ctrl = 0U; | |
| uint32_t u32txLen = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, u8DataAddr); /* Write data address to UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else | |
| { | |
| if(u32txLen < u32wLen) | |
| UI2C_SET_DATA(ui2c, data[u32txLen++]); /* Write data to UI2C_TXDAT */ | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| } | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_CTL register */ | |
| } | |
| return u32txLen; /* Return bytes length that have been transmitted */ | |
| } | |
| /** | |
| * @brief Specify two bytes register address and Write a byte to Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u16DataAddr Specify a address (2 byte) of data write to | |
| * @param[in] data Write a byte data to Slave | |
| * | |
| * @retval 0 Write data success | |
| * @retval 1 Write data fail, or bus occurs error events | |
| * | |
| * @details The function is used for USCI_I2C Master specify two bytes address that data write to in Slave. | |
| * | |
| */ | |
| uint8_t UI2C_WriteByteTwoRegs(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr, uint8_t data) | |
| { | |
| uint8_t u8Xfering = 1U, u8Err = 0U, u8Ctrl = 0U; | |
| uint32_t u32txLen = 0U; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(u32txLen == 0U) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFF00U) >> 8U); /* Write Hi byte data address to UI2C_TXDAT */ | |
| u32txLen++; | |
| } | |
| else if(u32txLen == 1U) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFFU)); /* Write Lo byte data address to UI2C_TXDAT */ | |
| u32txLen++; | |
| } | |
| else if(u32txLen == 2U) | |
| { | |
| UI2C_SET_DATA(ui2c, data); /* Write data to UI2C_TXDAT */ | |
| u32txLen++; | |
| } | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_CTL register */ | |
| } | |
| return (u8Err | u8Xfering); | |
| } | |
| /** | |
| * @brief Specify two bytes register address and write multi bytes to Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u16DataAddr Specify a address (2 bytes) of data write to | |
| * @param[in] *data Pointer to array to write data to Slave | |
| * @param[in] u32wLen How many bytes need to write to Slave | |
| * | |
| * @return A length of how many bytes have been transmitted. | |
| * | |
| * @details The function is used for USCI_I2C Master specify a byte address that multi data write to in Slave. | |
| * | |
| */ | |
| uint32_t UI2C_WriteMultiBytesTwoRegs(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr, uint8_t *data, uint32_t u32wLen) | |
| { | |
| uint8_t u8Xfering = 1U, u8Addr = 1U, u8Ctrl = 0U; | |
| uint32_t u32txLen = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFF00U) >> 8U); /* Write Hi byte data address to UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else if(eEvent == MASTER_SEND_DATA) | |
| { | |
| if(u8Addr) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFFU)); /* Write Lo byte data address to UI2C_TXDAT */ | |
| u8Addr = 0; | |
| } | |
| else | |
| { | |
| if(u32txLen < u32wLen) | |
| { | |
| UI2C_SET_DATA(ui2c, data[u32txLen++]); /* Write data to UI2C_TXDAT */ | |
| } | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| } | |
| } | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_CTL register */ | |
| } | |
| return u32txLen; /* Return bytes length that have been transmitted */ | |
| } | |
| /** | |
| * @brief Read a byte from Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * | |
| * @return Read a byte data from Slave | |
| * | |
| * @details The function is used for USCI_I2C Master to read a byte data from Slave. | |
| * | |
| */ | |
| uint8_t UI2C_ReadByte(UI2C_T *ui2c, uint8_t u8SlaveAddr) | |
| { | |
| uint8_t u8Xfering = 1U, u8Err = 0U, rdata = 0U, u8Ctrl = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x01U); /* Write SLA+R to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_H_RD_ADDRESS; | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| eEvent = MASTER_READ_DATA; | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| if(eEvent == MASTER_SEND_H_RD_ADDRESS) | |
| { | |
| u8Err = 1U; | |
| } | |
| else | |
| { | |
| rdata = (unsigned char) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| } | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| if(u8Err) | |
| rdata = 0U; | |
| return rdata; /* Return read data */ | |
| } | |
| /** | |
| * @brief Read multi bytes from Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[out] *rdata Point to array to store data from Slave | |
| * @param[in] u32rLen How many bytes need to read from Slave | |
| * | |
| * @return A length of how many bytes have been received | |
| * | |
| * @details The function is used for USCI_I2C Master to read multi data bytes from Slave. | |
| * | |
| * | |
| */ | |
| uint32_t UI2C_ReadMultiBytes(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t *rdata, uint32_t u32rLen) | |
| { | |
| uint8_t u8Xfering = 1U, u8Ctrl = 0U; | |
| uint32_t u32rxLen = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x01U); /* Write SLA+R to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_H_RD_ADDRESS; | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_H_RD_ADDRESS) | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_AA); | |
| eEvent = MASTER_READ_DATA; | |
| } | |
| else | |
| { | |
| rdata[u32rxLen++] = (unsigned char) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| if(u32rxLen < (u32rLen - 1U)) | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_AA); | |
| else | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| if(eEvent == MASTER_READ_DATA) | |
| rdata[u32rxLen++] = (unsigned char) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| return u32rxLen; /* Return bytes length that have been received */ | |
| } | |
| /** | |
| * @brief Specify a byte register address and read a byte from Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u8DataAddr Specify a address(1 byte) of data read from | |
| * | |
| * @return Read a byte data from Slave | |
| * | |
| * @details The function is used for USCI_I2C Master specify a byte address that a data byte read from Slave. | |
| * | |
| * | |
| */ | |
| uint8_t UI2C_ReadByteOneReg(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr) | |
| { | |
| uint8_t u8Xfering = 1U, u8Err = 0U, rdata = 0U, u8Ctrl = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| if(eEvent == MASTER_SEND_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| } | |
| else if(eEvent == MASTER_SEND_REPEAT_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x01U); /* Write SLA+R to Register TXDAT */ | |
| eEvent = MASTER_SEND_H_RD_ADDRESS; | |
| } | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, u8DataAddr); /* Write data address of register */ | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else if(eEvent == MASTER_SEND_DATA) | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STA); /* Send repeat START signal */ | |
| eEvent = MASTER_SEND_REPEAT_START; | |
| } | |
| else | |
| { | |
| /* SLA+R ACK */ | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| eEvent = MASTER_READ_DATA; | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| if(eEvent == MASTER_READ_DATA) | |
| { | |
| rdata = (uint8_t) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| } | |
| else | |
| { | |
| u8Err = 1U; | |
| } | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| if(u8Err) | |
| rdata = 0U; /* If occurs error, return 0 */ | |
| return rdata; /* Return read data */ | |
| } | |
| /** | |
| * @brief Specify a byte register address and read multi bytes from Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u8DataAddr Specify a address (1 bytes) of data read from | |
| * @param[out] *rdata Point to array to store data from Slave | |
| * @param[in] u32rLen How many bytes need to read from Slave | |
| * | |
| * @return A length of how many bytes have been received | |
| * | |
| * @details The function is used for USCI_I2C Master specify a byte address that multi data bytes read from Slave. | |
| * | |
| * | |
| */ | |
| uint32_t UI2C_ReadMultiBytesOneReg(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint8_t u8DataAddr, uint8_t *rdata, uint32_t u32rLen) | |
| { | |
| uint8_t u8Xfering = 1U, u8Ctrl = 0U; | |
| uint32_t u32rxLen = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| if(eEvent == MASTER_SEND_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| } | |
| else if(eEvent == MASTER_SEND_REPEAT_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x01U); /* Write SLA+R to Register TXDAT */ | |
| eEvent = MASTER_SEND_H_RD_ADDRESS; | |
| } | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, u8DataAddr); /* Write data address of register */ | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else if(eEvent == MASTER_SEND_DATA) | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STA); /* Send repeat START signal */ | |
| eEvent = MASTER_SEND_REPEAT_START; | |
| } | |
| else if(eEvent == MASTER_SEND_H_RD_ADDRESS) | |
| { | |
| /* SLA+R ACK */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_AA); | |
| eEvent = MASTER_READ_DATA; | |
| } | |
| else | |
| { | |
| rdata[u32rxLen++] = (uint8_t) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| if(u32rxLen < u32rLen - 1U) | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_AA); | |
| else | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| if(eEvent == MASTER_READ_DATA) | |
| rdata[u32rxLen++] = (uint8_t) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| return u32rxLen; /* Return bytes length that have been received */ | |
| } | |
| /** | |
| * @brief Specify two bytes register address and read a byte from Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u16DataAddr Specify a address(2 byte) of data read from | |
| * | |
| * @return Read a byte data from Slave | |
| * | |
| * @details The function is used for USCI_I2C Master specify two bytes address that a data byte read from Slave. | |
| * | |
| * | |
| */ | |
| uint8_t UI2C_ReadByteTwoRegs(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr) | |
| { | |
| uint8_t u8Xfering = 1U, u8Err = 0U, rdata = 0U, u8Addr = 1U, u8Ctrl = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| if(eEvent == MASTER_SEND_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| } | |
| else if(eEvent == MASTER_SEND_REPEAT_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x01U); /* Write SLA+R to Register TXDAT */ | |
| eEvent = MASTER_SEND_H_RD_ADDRESS; | |
| } | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFF00U) >> 8U); /* Write Hi byte address of register */ | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else if(eEvent == MASTER_SEND_DATA) | |
| { | |
| if(u8Addr) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFFU)); /* Write Lo byte address of register */ | |
| u8Addr = 0; | |
| } | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STA); /* Send repeat START signal */ | |
| eEvent = MASTER_SEND_REPEAT_START; | |
| } | |
| } | |
| else | |
| { | |
| /* SLA+R ACK */ | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| eEvent = MASTER_READ_DATA; | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| if(eEvent == MASTER_READ_DATA) | |
| { | |
| rdata = (uint8_t) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| } | |
| else | |
| { | |
| u8Err = 1U; | |
| } | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| u8Err = 1U; | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| if(u8Err) | |
| rdata = 0U; /* If occurs error, return 0 */ | |
| return rdata; /* Return read data */ | |
| } | |
| /** | |
| * @brief Specify two bytes register address and read multi bytes from Slave | |
| * | |
| * @param[in] *ui2c The pointer of the specified USCI_I2C module. | |
| * @param[in] u8SlaveAddr Access Slave address(7-bit) | |
| * @param[in] u16DataAddr Specify a address (2 bytes) of data read from | |
| * @param[out] *rdata Point to array to store data from Slave | |
| * @param[in] u32rLen How many bytes need to read from Slave | |
| * | |
| * @return A length of how many bytes have been received | |
| * | |
| * @details The function is used for USCI_I2C Master specify two bytes address that multi data bytes read from Slave. | |
| * | |
| * | |
| */ | |
| uint32_t UI2C_ReadMultiBytesTwoRegs(UI2C_T *ui2c, uint8_t u8SlaveAddr, uint16_t u16DataAddr, uint8_t *rdata, uint32_t u32rLen) | |
| { | |
| uint8_t u8Xfering = 1U, u8Addr = 1U, u8Ctrl = 0U; | |
| uint32_t u32rxLen = 0U; | |
| enum UI2C_MASTER_EVENT eEvent = MASTER_SEND_START; | |
| UI2C_START(ui2c); /* Send START */ | |
| while(u8Xfering) | |
| { | |
| while(!(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U)); /* Wait UI2C new status occur */ | |
| switch(UI2C_GET_PROT_STATUS(ui2c) & 0x3F00U) | |
| { | |
| case UI2C_PROTSTS_STARIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STARIF_Msk); /* Clear START INT Flag */ | |
| if(eEvent == MASTER_SEND_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x00U); /* Write SLA+W to Register UI2C_TXDAT */ | |
| eEvent = MASTER_SEND_ADDRESS; | |
| } | |
| else if(eEvent == MASTER_SEND_REPEAT_START) | |
| { | |
| UI2C_SET_DATA(ui2c, (u8SlaveAddr << 1U) | 0x01U); /* Write SLA+R to Register TXDAT */ | |
| eEvent = MASTER_SEND_H_RD_ADDRESS; | |
| } | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| break; | |
| case UI2C_PROTSTS_ACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_ACKIF_Msk); /* Clear ACK INT Flag */ | |
| if(eEvent == MASTER_SEND_ADDRESS) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFF00U) >> 8U); /* Write Hi byte address of register */ | |
| eEvent = MASTER_SEND_DATA; | |
| } | |
| else if(eEvent == MASTER_SEND_DATA) | |
| { | |
| if(u8Addr) | |
| { | |
| UI2C_SET_DATA(ui2c, (uint8_t)(u16DataAddr & 0xFFU)); /* Write Lo byte address of register */ | |
| u8Addr = 0; | |
| } | |
| else | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STA); /* Send repeat START signal */ | |
| eEvent = MASTER_SEND_REPEAT_START; | |
| } | |
| } | |
| else if(eEvent == MASTER_SEND_H_RD_ADDRESS) | |
| { | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_AA); | |
| eEvent = MASTER_READ_DATA; | |
| } | |
| else | |
| { | |
| rdata[u32rxLen++] = (uint8_t) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| if(u32rxLen < u32rLen - 1U) | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_AA); | |
| else | |
| u8Ctrl = UI2C_CTL_PTRG; | |
| } | |
| break; | |
| case UI2C_PROTSTS_NACKIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_NACKIF_Msk); /* Clear NACK INT Flag */ | |
| if(eEvent == MASTER_READ_DATA) | |
| rdata[u32rxLen++] = (uint8_t) UI2C_GET_DATA(ui2c); /* Receive Data */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| case UI2C_PROTSTS_STORIF_Msk: | |
| UI2C_CLR_PROT_INT_FLAG(ui2c, UI2C_PROTSTS_STORIF_Msk); /* Clear STOP INT Flag */ | |
| u8Ctrl = UI2C_CTL_PTRG; /* Clear SI */ | |
| u8Xfering = 0U; | |
| break; | |
| case UI2C_PROTSTS_ARBLOIF_Msk: /* Arbitration Lost */ | |
| default: /* Unknow status */ | |
| u8Ctrl = (UI2C_CTL_PTRG | UI2C_CTL_STO); /* Clear SI and send STOP */ | |
| break; | |
| } | |
| UI2C_SET_CONTROL_REG(ui2c, u8Ctrl); /* Write controlbit to UI2C_PROTCTL register */ | |
| } | |
| return u32rxLen; /* Return bytes length that have been received */ | |
| } | |
| /*@}*/ /* end of group USCI_I2C_EXPORTED_FUNCTIONS */ | |
| /*@}*/ /* end of group USCI_I2C_Driver */ | |
| /*@}*/ /* end of group Standard_Driver */ | |
| /*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/ |