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/********************************** (C) COPYRIGHT *******************************
* File Name : ch32f20x_SDIO.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/08/08
* Description : This file provides all the SDIO firmware functions.
*******************************************************************************/
#include "ch32f20x_sdio.h"
#include "ch32f20x_rcc.h"
#define SDIO_OFFSET (SDIO_BASE - PERIPH_BASE)
/* CLKCR register clear mask */
#define CLKCR_CLEAR_MASK ((uint32_t)0xFFFF8100)
/* SDIO PWRCTRL Mask */
#define PWR_PWRCTRL_MASK ((uint32_t)0xFFFFFFFC)
/* SDIO DCTRL Clear Mask */
#define DCTRL_CLEAR_MASK ((uint32_t)0xFFFFFF08)
/* CMD Register clear mask */
#define CMD_CLEAR_MASK ((uint32_t)0xFFFFF800)
/* SDIO RESP Registers Address */
#define SDIO_RESP_ADDR ((uint32_t)(SDIO_BASE + 0x14))
/*******************************************************************************
* Function Name : SDIO_DeInit
* Description : Deinitializes the SDIO peripheral registers to their default reset values.
* Input : None
* Return : None
*******************************************************************************/
void SDIO_DeInit(void)
{
SDIO->POWER = 0x00000000;
SDIO->CLKCR = 0x00000000;
SDIO->ARG = 0x00000000;
SDIO->CMD = 0x00000000;
SDIO->DTIMER = 0x00000000;
SDIO->DLEN = 0x00000000;
SDIO->DCTRL = 0x00000000;
SDIO->ICR = 0x00C007FF;
SDIO->MASK = 0x00000000;
}
/*******************************************************************************
* Function Name : SDIO_Init
* Description : Initializes the SDIO peripheral according to the specified
* parameters in the SDIO_InitStruct.
* Input : SDIO_InitStruct : pointer to a SDIO_InitTypeDef structure
* that contains the configuration information for the SDIO peripheral.
* Return : None
*******************************************************************************/
void SDIO_Init(SDIO_InitTypeDef* SDIO_InitStruct)
{
uint32_t tmpreg = 0;
tmpreg = SDIO->CLKCR;
tmpreg &= CLKCR_CLEAR_MASK;
tmpreg |= (SDIO_InitStruct->SDIO_ClockDiv | SDIO_InitStruct->SDIO_ClockPowerSave |
SDIO_InitStruct->SDIO_ClockBypass | SDIO_InitStruct->SDIO_BusWide |
SDIO_InitStruct->SDIO_ClockEdge | SDIO_InitStruct->SDIO_HardwareFlowControl);
SDIO->CLKCR = tmpreg;
}
/*******************************************************************************
* Function Name : SDIO_StructInit
* Description : Fills each SDIO_InitStruct member with its default value.
* Input : SDIO_InitStruct: pointer to an SDIO_InitTypeDef structure which
* will be initialized.
* Return : None
*******************************************************************************/
void SDIO_StructInit(SDIO_InitTypeDef* SDIO_InitStruct)
{
SDIO_InitStruct->SDIO_ClockDiv = 0x00;
SDIO_InitStruct->SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStruct->SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStruct->SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStruct->SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStruct->SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
}
/*******************************************************************************
* Function Name : SDIO_ClockCmd
* Description : Enables or disables the SDIO Clock.
* Input : SDIO_InitStruct: pointer to an SDIO_InitTypeDef structure which
* will be initialized.
* NewState��ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_ClockCmd(FunctionalState NewState)
{
if(NewState) SDIO->CLKCR |= ((uint32_t)1<<8);
else SDIO->CLKCR &= ~((uint32_t)1<<8);
}
/*******************************************************************************
* Function Name : SDIO_SetPowerState
* Description : Sets the power status of the controller.
* Input : SDIO_PowerState: new state of the Power state.
* SDIO_PowerState_OFF
* SDIO_PowerState_ON
* Return : None
*******************************************************************************/
void SDIO_SetPowerState(uint32_t SDIO_PowerState)
{
SDIO->POWER &= PWR_PWRCTRL_MASK;
SDIO->POWER |= SDIO_PowerState;
}
/*******************************************************************************
* Function Name : SDIO_GetPowerState
* Description : Gets the power status of the controller.
* Input : None
* Return :
* - 0x00: Power OFF
* - 0x02: Power UP
* - 0x03: Power ON
*******************************************************************************/
uint32_t SDIO_GetPowerState(void)
{
return (SDIO->POWER & (~PWR_PWRCTRL_MASK));
}
/*******************************************************************************
* Function Name : SDIO_ITConfig
* Description : Enables or disables the SDIO interrupts.
* Input : DIO_IT: specifies the SDIO interrupt sources to be enabled or disabled.
* SDIO_IT_CCRCFAIL
* SDIO_IT_DCRCFAIL
* SDIO_IT_CTIMEOUT
* SDIO_IT_DTIMEOUT
* SDIO_IT_TXUNDERR
* SDIO_IT_RXOVERR
* SDIO_IT_CMDREND
* SDIO_IT_CMDSENT
* SDIO_IT_DATAEND
* SDIO_IT_STBITERR
* SDIO_IT_DBCKEND
* SDIO_IT_CMDACT
* SDIO_IT_TXACT
* SDIO_IT_RXACT
* SDIO_IT_TXFIFOHE
* SDIO_IT_RXFIFOHF
* SDIO_IT_TXFIFOF
* SDIO_IT_RXFIFOF
* SDIO_IT_TXFIFOE
* SDIO_IT_RXFIFOE
* SDIO_IT_TXDAVL
* SDIO_IT_RXDAVL
* SDIO_IT_SDIOIT
* SDIO_IT_CEATAEND
* NewState:ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_ITConfig(uint32_t SDIO_IT, FunctionalState NewState)
{
if (NewState != DISABLE)
{
SDIO->MASK |= SDIO_IT;
}
else
{
SDIO->MASK &= ~SDIO_IT;
}
}
/*******************************************************************************
* Function Name : SDIO_DMACmd
* Description : Enables or disables the SDIO DMA request.
* Input : NewState:ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_DMACmd(FunctionalState NewState)
{
if(NewState) SDIO->DCTRL |= ((uint32_t)1<<3);
else SDIO->DCTRL &= ~((uint32_t)1<<3);
}
/*******************************************************************************
* Function Name : SDIO_SendCommand
* Description : Initializes the SDIO Command according to the specified
* parameters in the SDIO_CmdInitStruct and send the command.
* Input : SDIO_CmdInitStruct : pointer to a SDIO_CmdInitTypeDef
* structure that contains the configuration information for the SDIO command.
* Return : None
*******************************************************************************/
void SDIO_SendCommand(SDIO_CmdInitTypeDef *SDIO_CmdInitStruct)
{
uint32_t tmpreg = 0;
SDIO->ARG = SDIO_CmdInitStruct->SDIO_Argument;
tmpreg = SDIO->CMD;
tmpreg &= CMD_CLEAR_MASK;
tmpreg |= (uint32_t)SDIO_CmdInitStruct->SDIO_CmdIndex | SDIO_CmdInitStruct->SDIO_Response
| SDIO_CmdInitStruct->SDIO_Wait | SDIO_CmdInitStruct->SDIO_CPSM;
SDIO->CMD = tmpreg;
}
/*******************************************************************************
* Function Name : SDIO_CmdStructInit
* Description : Fills each SDIO_CmdInitStruct member with its default value.
* Input : SDIO_CmdInitStruct: pointer to an SDIO_CmdInitTypeDef
* structure which will be initialized.
* Return : None
*******************************************************************************/
void SDIO_CmdStructInit(SDIO_CmdInitTypeDef* SDIO_CmdInitStruct)
{
SDIO_CmdInitStruct->SDIO_Argument = 0x00;
SDIO_CmdInitStruct->SDIO_CmdIndex = 0x00;
SDIO_CmdInitStruct->SDIO_Response = SDIO_Response_No;
SDIO_CmdInitStruct->SDIO_Wait = SDIO_Wait_No;
SDIO_CmdInitStruct->SDIO_CPSM = SDIO_CPSM_Disable;
}
/*******************************************************************************
* Function Name : SDIO_GetCommandResponse
* Description : Returns command index of last command for which response received.
* Input : None
* Return : Returns the command index of the last command response received.
*******************************************************************************/
uint8_t SDIO_GetCommandResponse(void)
{
return (uint8_t)(SDIO->RESPCMD);
}
/*******************************************************************************
* Function Name : SDIO_GetResponse
* Description : Returns response received from the card for the last command.
* Input : SDIO_RESP: Specifies the SDIO response register.
* SDIO_RESP1: Response Register 1
* SDIO_RESP2: Response Register 2
* SDIO_RESP3: Response Register 3
* SDIO_RESP4: Response Register 4
* Return : Returns the command index of the last command response received.
*******************************************************************************/
uint32_t SDIO_GetResponse(uint32_t SDIO_RESP)
{
__IO uint32_t tmp = 0;
tmp = SDIO_RESP_ADDR + SDIO_RESP;
return (*(__IO uint32_t *) tmp);
}
/*******************************************************************************
* Function Name : SDIO_DataConfig
* Description : Initializes the SDIO data path according to the specified
* Input : SDIO_DataInitStruct : pointer to a SDIO_DataInitTypeDef structure that
* contains the configuration information for the SDIO command.
* Return : None
*******************************************************************************/
void SDIO_DataConfig(SDIO_DataInitTypeDef* SDIO_DataInitStruct)
{
uint32_t tmpreg = 0;
SDIO->DTIMER = SDIO_DataInitStruct->SDIO_DataTimeOut;
SDIO->DLEN = SDIO_DataInitStruct->SDIO_DataLength;
tmpreg = SDIO->DCTRL;
tmpreg &= DCTRL_CLEAR_MASK;
tmpreg |= (uint32_t)SDIO_DataInitStruct->SDIO_DataBlockSize | SDIO_DataInitStruct->SDIO_TransferDir
| SDIO_DataInitStruct->SDIO_TransferMode | SDIO_DataInitStruct->SDIO_DPSM;
SDIO->DCTRL = tmpreg;
}
/*******************************************************************************
* Function Name : SDIO_DataStructInit
* Description : Fills each SDIO_DataInitStruct member with its default value.
* Input : SDIO_DataInitStruct: pointer to an SDIO_DataInitTypeDef structure which
* will be initialized.
* Return : None
*******************************************************************************/
void SDIO_DataStructInit(SDIO_DataInitTypeDef* SDIO_DataInitStruct)
{
SDIO_DataInitStruct->SDIO_DataTimeOut = 0xFFFFFFFF;
SDIO_DataInitStruct->SDIO_DataLength = 0x00;
SDIO_DataInitStruct->SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
SDIO_DataInitStruct->SDIO_TransferDir = SDIO_TransferDir_ToCard;
SDIO_DataInitStruct->SDIO_TransferMode = SDIO_TransferMode_Block;
SDIO_DataInitStruct->SDIO_DPSM = SDIO_DPSM_Disable;
}
/*******************************************************************************
* Function Name : SDIO_GetDataCounter
* Description : Returns number of remaining data bytes to be transferred.
* Input : None
* Return : Number of remaining data bytes to be transferred
*******************************************************************************/
uint32_t SDIO_GetDataCounter(void)
{
return SDIO->DCOUNT;
}
/*******************************************************************************
* Function Name : SDIO_ReadData
* Description : Read one data word from Rx FIFO.
* Input : None
* Return : Data received
*******************************************************************************/
uint32_t SDIO_ReadData(void)
{
return SDIO->FIFO;
}
/*******************************************************************************
* Function Name : SDIO_WriteData
* Description : Write one data word to Tx FIFO.
* Input : Data: 32-bit data word to write.
* Return : None
*******************************************************************************/
void SDIO_WriteData(uint32_t Data)
{
SDIO->FIFO = Data;
}
/*******************************************************************************
* Function Name : SDIO_GetFIFOCount
* Description : Returns the number of words left to be written to or read from FIFO.
* Input : None
* Return : Remaining number of words.
*******************************************************************************/
uint32_t SDIO_GetFIFOCount(void)
{
return SDIO->FIFOCNT;
}
/*******************************************************************************
* Function Name : SDIO_StartSDIOReadWait
* Description : Starts the SD I/O Read Wait operation.
* Input : NewState��ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_StartSDIOReadWait(FunctionalState NewState)
{
if(NewState) SDIO->DCTRL |= ((uint32_t)1<<8);
else SDIO->DCTRL &= ~((uint32_t)1<<8);
}
/*******************************************************************************
* Function Name : SDIO_StopSDIOReadWait
* Description : Stops the SD I/O Read Wait operation.
* Input : NewState��ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_StopSDIOReadWait(FunctionalState NewState)
{
if(NewState) SDIO->DCTRL |= ((uint32_t)1<<9);
else SDIO->DCTRL &= ~((uint32_t)1<<9);
}
/*******************************************************************************
* Function Name : SDIO_SetSDIOReadWaitMode
* Description : Sets one of the two options of inserting read wait interval.
* Input : SDIO_ReadWaitMode: SD I/O Read Wait operation mode.
* SDIO_ReadWaitMode_CLK: Read Wait control by stopping SDIOCLK
* SDIO_ReadWaitMode_DATA2: Read Wait control using SDIO_DATA2
* Return : None
*******************************************************************************/
void SDIO_SetSDIOReadWaitMode(uint32_t SDIO_ReadWaitMode)
{
if(SDIO_ReadWaitMode) SDIO->DCTRL |= ((uint32_t)1<<10);
else SDIO->DCTRL &= ~((uint32_t)1<<10);
}
/*******************************************************************************
* Function Name : SDIO_SetSDIOOperation
* Description : Enables or disables the SD I/O Mode Operation.
* Input : NewState: ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_SetSDIOOperation(FunctionalState NewState)
{
if(NewState) SDIO->DCTRL |= ((uint32_t)1<<11);
else SDIO->DCTRL &= ~((uint32_t)1<<11);
}
/*******************************************************************************
* Function Name : SDIO_SendSDIOSuspendCmd
* Description : Enables or disables the SD I/O Mode suspend command sending.
* Input : NewState: ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_SendSDIOSuspendCmd(FunctionalState NewState)
{
if(NewState) SDIO->CMD |= ((uint32_t)1<<11);
else SDIO->CMD &= ~((uint32_t)1<<11);
}
/*******************************************************************************
* Function Name : SDIO_CommandCompletionCmd
* Description : Enables or disables the command completion signal.
* Input : NewState: ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_CommandCompletionCmd(FunctionalState NewState)
{
if(NewState) SDIO->CMD |= ((uint32_t)1<<12);
else SDIO->CMD &= ~((uint32_t)1<<12);
}
/*******************************************************************************
* Function Name : SDIO_CEATAITCmd
* Description : Enables or disables the CE-ATA interrupt.
* Input : NewState: ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_CEATAITCmd(FunctionalState NewState)
{
if(NewState) SDIO->CMD |= ((uint32_t)1<<13);
else SDIO->CMD &= ~((uint32_t)1<<13);
}
/*******************************************************************************
* Function Name : SDIO_SendCEATACmd
* Description : Sends CE-ATA command (CMD61).
* Input : NewState: ENABLE or DISABLE.
* Return : None
*******************************************************************************/
void SDIO_SendCEATACmd(FunctionalState NewState)
{
if(NewState) SDIO->CMD |= ((uint32_t)1<<14);
else SDIO->CMD &= ~((uint32_t)1<<14);
}
/*******************************************************************************
* Function Name : SDIO_GetFlagStatus
* Description : Checks whether the specified SDIO flag is set or not.
* Input : SDIO_FLAG: specifies the flag to check.
* SDIO_FLAG_CCRCFAIL: Command response received (CRC check failed)
* SDIO_FLAG_DCRCFAIL: Data block sent/received (CRC check failed)
* SDIO_FLAG_CTIMEOUT: Command response timeout
* SDIO_FLAG_DTIMEOUT: Data timeout
* SDIO_FLAG_TXUNDERR: Transmit FIFO underrun error
* SDIO_FLAG_RXOVERR: Received FIFO overrun error
* SDIO_FLAG_CMDREND: Command response received (CRC check passed)
* SDIO_FLAG_CMDSENT: Command sent (no response required)
* SDIO_FLAG_DATAEND: Data end (data counter, SDIDCOUNT, is zero)
* SDIO_FLAG_STBITERR: Start bit not detected on all data signals in wide
* bus mode.
* SDIO_FLAG_DBCKEND: Data block sent/received (CRC check passed)
* SDIO_FLAG_CMDACT: Command transfer in progress
* SDIO_FLAG_TXACT: Data transmit in progress
* SDIO_FLAG_RXACT: Data receive in progress
* SDIO_FLAG_TXFIFOHE: Transmit FIFO Half Empty
* SDIO_FLAG_RXFIFOHF: Receive FIFO Half Full
* SDIO_FLAG_TXFIFOF: Transmit FIFO full
* SDIO_FLAG_RXFIFOF: Receive FIFO full
* SDIO_FLAG_TXFIFOE: Transmit FIFO empty
* SDIO_FLAG_RXFIFOE: Receive FIFO empty
* SDIO_FLAG_TXDAVL: Data available in transmit FIFO
* SDIO_FLAG_RXDAVL: Data available in receive FIFO
* SDIO_FLAG_SDIOIT: SD I/O interrupt received
* SDIO_FLAG_CEATAEND: CE-ATA command completion signal received for CMD61
* Return : ITStatus��SET or RESET
*******************************************************************************/
FlagStatus SDIO_GetFlagStatus(uint32_t SDIO_FLAG)
{
FlagStatus bitstatus = RESET;
if ((SDIO->STA & SDIO_FLAG) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
return bitstatus;
}
/*******************************************************************************
* Function Name : SDIO_ClearFlag
* Description : Clears the SDIO's pending flags.
* Input : SDIO_FLAG: specifies the flag to clear.
* SDIO_FLAG_CCRCFAIL: Command response received (CRC check failed)
* SDIO_FLAG_DCRCFAIL: Data block sent/received (CRC check failed)
* SDIO_FLAG_CTIMEOUT: Command response timeout
* SDIO_FLAG_DTIMEOUT: Data timeout
* SDIO_FLAG_TXUNDERR: Transmit FIFO underrun error
* SDIO_FLAG_RXOVERR: Received FIFO overrun error
* SDIO_FLAG_CMDREND: Command response received (CRC check passed)
* SDIO_FLAG_CMDSENT: Command sent (no response required)
* SDIO_FLAG_DATAEND: Data end (data counter, SDIDCOUNT, is zero)
* SDIO_FLAG_STBITERR: Start bit not detected on all data signals in wide
* bus mode
* SDIO_FLAG_DBCKEND: Data block sent/received (CRC check passed)
* SDIO_FLAG_SDIOIT: SD I/O interrupt received
* SDIO_FLAG_CEATAEND: CE-ATA command completion signal received for CMD61
* Return : None
*******************************************************************************/
void SDIO_ClearFlag(uint32_t SDIO_FLAG)
{
SDIO->ICR = SDIO_FLAG;
}
/*******************************************************************************
* Function Name : SDIO_GetITStatus
* Description : Checks whether the specified SDIO interrupt has occurred or not.
* Input : SDIO_IT: specifies the SDIO interrupt source to check.
* SDIO_IT_CCRCFAIL: Command response received (CRC check failed) interrupt
* SDIO_IT_DCRCFAIL: Data block sent/received (CRC check failed) interrupt
* SDIO_IT_CTIMEOUT: Command response timeout interrupt
* SDIO_IT_DTIMEOUT: Data timeout interrupt
* SDIO_IT_TXUNDERR: Transmit FIFO underrun error interrupt
* SDIO_IT_RXOVERR: Received FIFO overrun error interrupt
* SDIO_IT_CMDREND: Command response received (CRC check passed) interrupt
* SDIO_IT_CMDSENT: Command sent (no response required) interrupt
* SDIO_IT_DATAEND: Data end (data counter, SDIDCOUNT, is zero) interrupt
* SDIO_IT_STBITERR: Start bit not detected on all data signals in wide
* bus mode interrupt
* SDIO_IT_DBCKEND: Data block sent/received (CRC check passed) interrupt
* SDIO_IT_CMDACT: Command transfer in progress interrupt
* SDIO_IT_TXACT: Data transmit in progress interrupt
* SDIO_IT_RXACT: Data receive in progress interrupt
* SDIO_IT_TXFIFOHE: Transmit FIFO Half Empty interrupt
* SDIO_IT_RXFIFOHF: Receive FIFO Half Full interrupt
* SDIO_IT_TXFIFOF: Transmit FIFO full interrupt
* SDIO_IT_RXFIFOF: Receive FIFO full interrupt
* SDIO_IT_TXFIFOE: Transmit FIFO empty interrupt
* SDIO_IT_RXFIFOE: Receive FIFO empty interrupt
* SDIO_IT_TXDAVL: Data available in transmit FIFO interrupt
* SDIO_IT_RXDAVL: Data available in receive FIFO interrupt
* SDIO_IT_SDIOIT: SD I/O interrupt received interrupt
* SDIO_IT_CEATAEND: CE-ATA command completion signal received for CMD61 interrupt
* Return : ITStatus��SET or RESET
*******************************************************************************/
ITStatus SDIO_GetITStatus(uint32_t SDIO_IT)
{
ITStatus bitstatus = RESET;
if ((SDIO->STA & SDIO_IT) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
return bitstatus;
}
/*******************************************************************************
* Function Name : SDIO_ClearITPendingBit
* Description : Clears the SDIO's interrupt pending bits.
* Input : SDIO_IT: specifies the interrupt pending bit to clear.
* SDIO_IT_CCRCFAIL: Command response received (CRC check failed) interrupt
* SDIO_IT_DCRCFAIL: Data block sent/received (CRC check failed) interrupt
* SDIO_IT_CTIMEOUT: Command response timeout interrupt
* SDIO_IT_DTIMEOUT: Data timeout interrupt
* SDIO_IT_TXUNDERR: Transmit FIFO underrun error interrupt
* SDIO_IT_RXOVERR: Received FIFO overrun error interrupt
* SDIO_IT_CMDREND: Command response received (CRC check passed) interrupt
* SDIO_IT_CMDSENT: Command sent (no response required) interrupt
* SDIO_IT_DATAEND: Data end (data counter, SDIDCOUNT, is zero) interrupt
* SDIO_IT_STBITERR: Start bit not detected on all data signals in wide
* bus mode interrupt
* SDIO_IT_SDIOIT: SD I/O interrupt received interrupt
* SDIO_IT_CEATAEND: CE-ATA command completion signal received for CMD61
* Return : None
*******************************************************************************/
void SDIO_ClearITPendingBit(uint32_t SDIO_IT)
{
SDIO->ICR = SDIO_IT;
}
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