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/**
******************************************************************************
* @file lib_u32k.c
* @author Application Team
* @version V1.1.0
* @date 2019-10-28
* @brief UART 32K library.
******************************************************************************
* @attention
*
******************************************************************************
*/
#include "lib_u32k.h"
#define U32K_STS_Msk (0x7UL)
#define U32K_CTRL0_RSTValue (0UL)
#define U32K_CTRL1_RSTValue (0UL)
#define U32K_PHASE_RSTValue (0x4B00UL)
/**
* @brief Initializes the U32Kx peripheral registers to their default reset values.
* @param U32Kx: U32K0~U32K1
* @retval None
*/
void U32K_DeInit(U32K_Type *U32Kx)
{
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
/* Disable U32K */
U32Kx->CTRL0 &= ~U32K_CTRL0_EN;
/* clear interrupt status */
U32Kx->STS = U32K_STS_Msk;
/* write default reset values */
U32Kx->CTRL0 = U32K_CTRL0_RSTValue;
U32Kx->CTRL1 = U32K_CTRL1_RSTValue;
U32Kx->BAUDDIV = U32K_PHASE_RSTValue;
}
/**
* @brief Initializes U32K.
* @param U32Kx:
U32K0~U32K1
InitStruct: U32K configuration
Debsel:
U32K_DEBSEL_0
U32K_DEBSEL_1
U32K_DEBSEL_2
U32K_DEBSEL_3
Parity:
U32K_PARITY_EVEN
U32K_PARITY_ODD
U32K_PARITY_0
U32K_PARITY_1
U32K_PARITY_NONE
FirstBit:
U32K_FIRSTBIT_LSB
U32K_FIRSTBIT_MSB
AutoCal:
U32K_AUTOCAL_ON
U32K_AUTOCAL_OFF
LineSel:
U32K_LINE_RX0
U32K_LINE_RX1
U32K_LINE_RX2
U32K_LINE_RX3
Baudrate: Baudrate value, 300UL ~ 14400UL
* @retval None
*/
void U32K_Init(U32K_Type *U32Kx, U32K_InitType *InitStruct)
{
uint32_t tmp_reg1, tmp_reg2;
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_DEBSEL(InitStruct->Debsel));
assert_parameters(IS_U32K_PARITY(InitStruct->Parity));
assert_parameters(IS_U32K_FIRSTBIT(InitStruct->FirstBit));
assert_parameters(IS_U32K_AUTOCAL(InitStruct->AutoCal));
assert_parameters(IS_U32K_LINE(InitStruct->LineSel));
assert_parameters(IS_U32K_BAUDRATE(InitStruct->Baudrate));
tmp_reg1 = U32Kx->CTRL0;
tmp_reg1 &= ~(U32K_CTRL0_DEBSEL\
|U32K_CTRL0_PMODE\
|U32K_CTRL0_MSB\
|U32K_CTRL0_ACOFF);
tmp_reg1 |= (InitStruct->Debsel\
|InitStruct->Parity\
|InitStruct->FirstBit\
|InitStruct->AutoCal);
U32Kx->CTRL0 = tmp_reg1;
if ((RTC->PSCA & RTC_PSCA_PSCA) == RTC_PSCA_PSCA_0) //RTCCLK 32768Hz
U32Kx->BAUDDIV = 65536*InitStruct->Baudrate/32768;
else if ((RTC->PSCA & RTC_PSCA_PSCA) == RTC_PSCA_PSCA_1) //RTCCLK 8192Hz
U32Kx->BAUDDIV = 65536*InitStruct->Baudrate/8192;
else
assert_parameters(0);
tmp_reg2 = U32Kx->CTRL1;
tmp_reg2 &= ~(U32K_CTRL1_RXSEL);
tmp_reg2 |= (InitStruct->LineSel);
U32Kx->CTRL1 = tmp_reg2;
}
/**
* @brief Fills each U32K_InitType member with its default value.
* @param InitStruct: pointer to an U32K_InitType structure which will be initialized.
* @retval None
*/
void U32K_StructInit(U32K_InitType *InitStruct)
{
/*-------------- Reset U32K init structure parameters values ---------------*/
/* Initialize the AutoCal member */
InitStruct->AutoCal = U32K_AUTOCAL_ON;
/* Initialize the Baudrate member */
InitStruct->Baudrate = 9600;
/* Initialize the Debsel member */
InitStruct->Debsel = U32K_DEBSEL_0;
/* Initialize the FirstBit member */
InitStruct->FirstBit = U32K_FIRSTBIT_LSB;
/* Initialize the LineSel member */
InitStruct->LineSel = U32K_LINE_RX0;
/* Initialize the Parity member */
InitStruct->Parity = U32K_PARITY_NONE;
}
/**
* @brief Enables or disables U32K interrupt.
* @param U32Kx:
U32K0~U32K1
INTMask: can use the '|' operator
U32K_INT_RXOV
U32K_INT_RXPE
U32K_INT_RX
NewState:
ENABLE
DISABLE
* @retval None
*/
void U32K_INTConfig(U32K_Type *U32Kx, uint32_t INTMask, uint8_t NewState)
{
uint32_t tmp;
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_INT(INTMask));
assert_parameters(IS_FUNCTIONAL_STATE(NewState));
tmp = U32Kx->CTRL1;
tmp &= ~INTMask;
if (NewState == ENABLE)
{
tmp |= INTMask;
}
U32Kx->CTRL1 = tmp;
}
/**
* @brief Gets interrupt flag status.
* @param U32Kx:
U32K0~U32K1
INTMask:
U32K_INTSTS_RXOV
U32K_INTSTS_RXPE
U32K_INTSTS_RX
* @retval Flag status
*/
uint8_t U32K_GetINTStatus(U32K_Type *U32Kx, uint32_t INTMask)
{
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_INTFLAGR(INTMask));
if (U32Kx->STS&INTMask)
return 1;
else
return 0;
}
/**
* @brief Clears flag status.
* @param U32Kx:
U32K0~U32K1
INTMask: can use the '|' operator
U32K_INTSTS_RXOV
U32K_INTSTS_RXPE
U32K_INTSTS_RX
* @retval None
*/
void U32K_ClearINTStatus(U32K_Type *U32Kx, uint32_t INTMask)
{
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_INTFLAGC(INTMask));
U32Kx->STS = INTMask;
}
/**
* @brief Reads receive data register.
* @param U32Kx:
U32K0~U32K1
* @retval Receive data value
*/
uint8_t U32K_ReceiveData(U32K_Type *U32Kx)
{
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
return (U32Kx->DATA);
}
/**
* @brief Configures U32K baudrate.
* @param U32Kx: U32K0~U32K1
BaudRate: Baudrate value
* @retval None
*/
void U32K_BaudrateConfig(U32K_Type *U32Kx, uint32_t BaudRate)
{
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_BAUDRATE(BaudRate));
if ((RTC->PSCA & RTC_PSCA_PSCA) == RTC_PSCA_PSCA_0) //RTCCLK 32768Hz
U32Kx->BAUDDIV = 65536*BaudRate/32768;
else if ((RTC->PSCA & RTC_PSCA_PSCA) == RTC_PSCA_PSCA_1) //RTCCLK 8192Hz
U32Kx->BAUDDIV = 65536*BaudRate/8192;
else
assert_parameters(0);
}
/**
* @brief Enables or disables U32K controlller.
* @param U32Kx:
U32K0~U32K1
NewState:
ENABLE
DISABLE
* @retval None
*/
void U32K_Cmd(U32K_Type *U32Kx, uint32_t NewState)
{
uint32_t tmp;
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_FUNCTIONAL_STATE(NewState));
tmp = U32Kx->CTRL0;
tmp &= ~(U32K_CTRL0_EN);
if (NewState == ENABLE)
{
tmp |= U32K_CTRL0_EN;
}
U32Kx->CTRL0 = tmp;
}
/**
* @brief Configures U32K receive line.
* @param U32Kx:
U32K0~U32K1
Line:
U32K_LINE_RX0
U32K_LINE_RX1
U32K_LINE_RX2
U32K_LINE_RX3
* @retval None
*/
void U32K_LineConfig(U32K_Type *U32Kx, uint32_t Line)
{
uint32_t tmp;
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_LINE(Line));
tmp = U32Kx->CTRL1;
tmp &= ~U32K_CTRL1_RXSEL_Msk;
tmp |= Line;
U32Kx->CTRL1 = tmp;
}
/**
* @brief Configures Wake-up mode.
* @param U32Kx:
U32K0~U32K1
WKUMode:
U32K_WKUMOD_RX
U32K_WKUMOD_PC
* @retval None
*/
void U32K_WKUModeConfig(U32K_Type *U32Kx, uint32_t WKUMode)
{
uint32_t tmp;
/* Check parameters */
assert_parameters(IS_U32K_ALL_INSTANCE(U32Kx));
assert_parameters(IS_U32K_WKUMODE(WKUMode));
tmp = U32Kx->CTRL0;
tmp &= ~U32K_CTRL0_WKUMODE_Msk;
tmp |= WKUMode;
U32Kx->CTRL0 = tmp;
}
/*********************************** END OF FILE ******************************/
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