copy from src/bare_test/stm32_key/fwlib/src/stm32f10x_cec.c
copy to src/bare_test/4.Systick/stdlib/src/stm32f10x_cec.c
File was copied from src/bare_test/stm32_key/fwlib/src/stm32f10x_cec.c |
| | |
| | | /**
|
| | | ******************************************************************************
|
| | | * @file stm32f10x_cec.c
|
| | | * @author MCD Application Team
|
| | | * @version V3.5.0
|
| | | * @date 11-March-2011
|
| | | * @brief This file provides all the CEC firmware functions.
|
| | | ******************************************************************************
|
| | | * @attention
|
| | | *
|
| | | * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
|
| | | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
|
| | | * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
|
| | | * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
|
| | | * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
|
| | | * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
|
| | | *
|
| | | * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
|
| | | ******************************************************************************
|
| | | */
|
| | |
|
| | | /* Includes ------------------------------------------------------------------*/
|
| | | #include "stm32f10x_cec.h"
|
| | | #include "stm32f10x_rcc.h"
|
| | |
|
| | | /** @addtogroup STM32F10x_StdPeriph_Driver
|
| | | * @{
|
| | | */
|
| | |
|
| | | /** @defgroup CEC |
| | | * @brief CEC driver modules
|
| | | * @{
|
| | | */
|
| | |
|
| | | /** @defgroup CEC_Private_TypesDefinitions
|
| | | * @{
|
| | | */
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */
|
| | |
|
| | |
|
| | | /** @defgroup CEC_Private_Defines
|
| | | * @{
|
| | | */ |
| | |
|
| | | /* ------------ CEC registers bit address in the alias region ----------- */
|
| | | #define CEC_OFFSET (CEC_BASE - PERIPH_BASE)
|
| | |
|
| | | /* --- CFGR Register ---*/
|
| | |
|
| | | /* Alias word address of PE bit */
|
| | | #define CFGR_OFFSET (CEC_OFFSET + 0x00)
|
| | | #define PE_BitNumber 0x00
|
| | | #define CFGR_PE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (PE_BitNumber * 4))
|
| | |
|
| | | /* Alias word address of IE bit */
|
| | | #define IE_BitNumber 0x01
|
| | | #define CFGR_IE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (IE_BitNumber * 4))
|
| | |
|
| | | /* --- CSR Register ---*/
|
| | |
|
| | | /* Alias word address of TSOM bit */
|
| | | #define CSR_OFFSET (CEC_OFFSET + 0x10)
|
| | | #define TSOM_BitNumber 0x00
|
| | | #define CSR_TSOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TSOM_BitNumber * 4))
|
| | |
|
| | | /* Alias word address of TEOM bit */
|
| | | #define TEOM_BitNumber 0x01
|
| | | #define CSR_TEOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TEOM_BitNumber * 4))
|
| | | |
| | | #define CFGR_CLEAR_Mask (uint8_t)(0xF3) /* CFGR register Mask */
|
| | | #define FLAG_Mask ((uint32_t)0x00FFFFFF) /* CEC FLAG mask */
|
| | | |
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | |
|
| | | /** @defgroup CEC_Private_Macros
|
| | | * @{
|
| | | */ |
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | |
|
| | | /** @defgroup CEC_Private_Variables
|
| | | * @{
|
| | | */ |
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | |
|
| | | /** @defgroup CEC_Private_FunctionPrototypes
|
| | | * @{
|
| | | */
|
| | | |
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | |
|
| | | /** @defgroup CEC_Private_Functions
|
| | | * @{
|
| | | */ |
| | |
|
| | | /**
|
| | | * @brief Deinitializes the CEC peripheral registers to their default reset |
| | | * values.
|
| | | * @param None
|
| | | * @retval None
|
| | | */
|
| | | void CEC_DeInit(void)
|
| | | {
|
| | | /* Enable CEC reset state */
|
| | | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, ENABLE); |
| | | /* Release CEC from reset state */
|
| | | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, DISABLE); |
| | | }
|
| | |
|
| | |
|
| | | /**
|
| | | * @brief Initializes the CEC peripheral according to the specified |
| | | * parameters in the CEC_InitStruct.
|
| | | * @param CEC_InitStruct: pointer to an CEC_InitTypeDef structure that
|
| | | * contains the configuration information for the specified
|
| | | * CEC peripheral.
|
| | | * @retval None
|
| | | */
|
| | | void CEC_Init(CEC_InitTypeDef* CEC_InitStruct)
|
| | | {
|
| | | uint16_t tmpreg = 0;
|
| | | |
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_BIT_TIMING_ERROR_MODE(CEC_InitStruct->CEC_BitTimingMode)); |
| | | assert_param(IS_CEC_BIT_PERIOD_ERROR_MODE(CEC_InitStruct->CEC_BitPeriodMode));
|
| | | |
| | | /*---------------------------- CEC CFGR Configuration -----------------*/
|
| | | /* Get the CEC CFGR value */
|
| | | tmpreg = CEC->CFGR;
|
| | | |
| | | /* Clear BTEM and BPEM bits */
|
| | | tmpreg &= CFGR_CLEAR_Mask;
|
| | | |
| | | /* Configure CEC: Bit Timing Error and Bit Period Error */
|
| | | tmpreg |= (uint16_t)(CEC_InitStruct->CEC_BitTimingMode | CEC_InitStruct->CEC_BitPeriodMode);
|
| | |
|
| | | /* Write to CEC CFGR register*/
|
| | | CEC->CFGR = tmpreg;
|
| | | |
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the specified CEC peripheral.
|
| | | * @param NewState: new state of the CEC peripheral. |
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void CEC_Cmd(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | |
|
| | | *(__IO uint32_t *) CFGR_PE_BB = (uint32_t)NewState;
|
| | |
|
| | | if(NewState == DISABLE)
|
| | | {
|
| | | /* Wait until the PE bit is cleared by hardware (Idle Line detected) */
|
| | | while((CEC->CFGR & CEC_CFGR_PE) != (uint32_t)RESET)
|
| | | {
|
| | | } |
| | | } |
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Enables or disables the CEC interrupt.
|
| | | * @param NewState: new state of the CEC interrupt.
|
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void CEC_ITConfig(FunctionalState NewState)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | |
|
| | | *(__IO uint32_t *) CFGR_IE_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Defines the Own Address of the CEC device.
|
| | | * @param CEC_OwnAddress: The CEC own address
|
| | | * @retval None
|
| | | */
|
| | | void CEC_OwnAddressConfig(uint8_t CEC_OwnAddress)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_ADDRESS(CEC_OwnAddress));
|
| | |
|
| | | /* Set the CEC own address */
|
| | | CEC->OAR = CEC_OwnAddress;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Sets the CEC prescaler value.
|
| | | * @param CEC_Prescaler: CEC prescaler new value
|
| | | * @retval None
|
| | | */
|
| | | void CEC_SetPrescaler(uint16_t CEC_Prescaler)
|
| | | {
|
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_PRESCALER(CEC_Prescaler));
|
| | |
|
| | | /* Set the Prescaler value*/
|
| | | CEC->PRES = CEC_Prescaler;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Transmits single data through the CEC peripheral.
|
| | | * @param Data: the data to transmit.
|
| | | * @retval None
|
| | | */
|
| | | void CEC_SendDataByte(uint8_t Data)
|
| | | { |
| | | /* Transmit Data */
|
| | | CEC->TXD = Data ;
|
| | | }
|
| | |
|
| | |
|
| | | /**
|
| | | * @brief Returns the most recent received data by the CEC peripheral.
|
| | | * @param None
|
| | | * @retval The received data.
|
| | | */
|
| | | uint8_t CEC_ReceiveDataByte(void)
|
| | | {
|
| | | /* Receive Data */
|
| | | return (uint8_t)(CEC->RXD);
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Starts a new message.
|
| | | * @param None
|
| | | * @retval None
|
| | | */
|
| | | void CEC_StartOfMessage(void)
|
| | | { |
| | | /* Starts of new message */
|
| | | *(__IO uint32_t *) CSR_TSOM_BB = (uint32_t)0x1;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Transmits message with or without an EOM bit.
|
| | | * @param NewState: new state of the CEC Tx End Of Message. |
| | | * This parameter can be: ENABLE or DISABLE.
|
| | | * @retval None
|
| | | */
|
| | | void CEC_EndOfMessageCmd(FunctionalState NewState)
|
| | | { |
| | | /* Check the parameters */
|
| | | assert_param(IS_FUNCTIONAL_STATE(NewState));
|
| | | |
| | | /* The data byte will be transmitted with or without an EOM bit*/
|
| | | *(__IO uint32_t *) CSR_TEOM_BB = (uint32_t)NewState;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Gets the CEC flag status
|
| | | * @param CEC_FLAG: specifies the CEC flag to check. |
| | | * This parameter can be one of the following values:
|
| | | * @arg CEC_FLAG_BTE: Bit Timing Error
|
| | | * @arg CEC_FLAG_BPE: Bit Period Error
|
| | | * @arg CEC_FLAG_RBTFE: Rx Block Transfer Finished Error
|
| | | * @arg CEC_FLAG_SBE: Start Bit Error
|
| | | * @arg CEC_FLAG_ACKE: Block Acknowledge Error
|
| | | * @arg CEC_FLAG_LINE: Line Error
|
| | | * @arg CEC_FLAG_TBTFE: Tx Block Transfer Finished Error
|
| | | * @arg CEC_FLAG_TEOM: Tx End Of Message |
| | | * @arg CEC_FLAG_TERR: Tx Error
|
| | | * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished
|
| | | * @arg CEC_FLAG_RSOM: Rx Start Of Message
|
| | | * @arg CEC_FLAG_REOM: Rx End Of Message
|
| | | * @arg CEC_FLAG_RERR: Rx Error
|
| | | * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished
|
| | | * @retval The new state of CEC_FLAG (SET or RESET)
|
| | | */
|
| | | FlagStatus CEC_GetFlagStatus(uint32_t CEC_FLAG) |
| | | {
|
| | | FlagStatus bitstatus = RESET;
|
| | | uint32_t cecreg = 0, cecbase = 0;
|
| | | |
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_GET_FLAG(CEC_FLAG));
|
| | | |
| | | /* Get the CEC peripheral base address */
|
| | | cecbase = (uint32_t)(CEC_BASE);
|
| | | |
| | | /* Read flag register index */
|
| | | cecreg = CEC_FLAG >> 28;
|
| | | |
| | | /* Get bit[23:0] of the flag */
|
| | | CEC_FLAG &= FLAG_Mask;
|
| | | |
| | | if(cecreg != 0)
|
| | | {
|
| | | /* Flag in CEC ESR Register */
|
| | | CEC_FLAG = (uint32_t)(CEC_FLAG >> 16);
|
| | | |
| | | /* Get the CEC ESR register address */
|
| | | cecbase += 0xC;
|
| | | }
|
| | | else
|
| | | {
|
| | | /* Get the CEC CSR register address */
|
| | | cecbase += 0x10;
|
| | | }
|
| | | |
| | | if(((*(__IO uint32_t *)cecbase) & CEC_FLAG) != (uint32_t)RESET)
|
| | | {
|
| | | /* CEC_FLAG is set */
|
| | | bitstatus = SET;
|
| | | }
|
| | | else
|
| | | {
|
| | | /* CEC_FLAG is reset */
|
| | | bitstatus = RESET;
|
| | | }
|
| | | |
| | | /* Return the CEC_FLAG status */
|
| | | return bitstatus;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Clears the CEC's pending flags.
|
| | | * @param CEC_FLAG: specifies the flag to clear. |
| | | * This parameter can be any combination of the following values:
|
| | | * @arg CEC_FLAG_TERR: Tx Error
|
| | | * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished
|
| | | * @arg CEC_FLAG_RSOM: Rx Start Of Message
|
| | | * @arg CEC_FLAG_REOM: Rx End Of Message
|
| | | * @arg CEC_FLAG_RERR: Rx Error
|
| | | * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished
|
| | | * @retval None
|
| | | */
|
| | | void CEC_ClearFlag(uint32_t CEC_FLAG)
|
| | | { |
| | | uint32_t tmp = 0x0;
|
| | | |
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_CLEAR_FLAG(CEC_FLAG));
|
| | |
|
| | | tmp = CEC->CSR & 0x2;
|
| | | |
| | | /* Clear the selected CEC flags */
|
| | | CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_FLAG) & 0xFFFFFFFC) | tmp);
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Checks whether the specified CEC interrupt has occurred or not.
|
| | | * @param CEC_IT: specifies the CEC interrupt source to check. |
| | | * This parameter can be one of the following values:
|
| | | * @arg CEC_IT_TERR: Tx Error
|
| | | * @arg CEC_IT_TBTF: Tx Block Transfer Finished
|
| | | * @arg CEC_IT_RERR: Rx Error
|
| | | * @arg CEC_IT_RBTF: Rx Block Transfer Finished
|
| | | * @retval The new state of CEC_IT (SET or RESET).
|
| | | */
|
| | | ITStatus CEC_GetITStatus(uint8_t CEC_IT)
|
| | | {
|
| | | ITStatus bitstatus = RESET;
|
| | | uint32_t enablestatus = 0;
|
| | | |
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_GET_IT(CEC_IT));
|
| | | |
| | | /* Get the CEC IT enable bit status */
|
| | | enablestatus = (CEC->CFGR & (uint8_t)CEC_CFGR_IE) ;
|
| | | |
| | | /* Check the status of the specified CEC interrupt */
|
| | | if (((CEC->CSR & CEC_IT) != (uint32_t)RESET) && enablestatus)
|
| | | {
|
| | | /* CEC_IT is set */
|
| | | bitstatus = SET;
|
| | | }
|
| | | else
|
| | | {
|
| | | /* CEC_IT is reset */
|
| | | bitstatus = RESET;
|
| | | }
|
| | | /* Return the CEC_IT status */
|
| | | return bitstatus;
|
| | | }
|
| | |
|
| | | /**
|
| | | * @brief Clears the CEC's interrupt pending bits.
|
| | | * @param CEC_IT: specifies the CEC interrupt pending bit to clear.
|
| | | * This parameter can be any combination of the following values:
|
| | | * @arg CEC_IT_TERR: Tx Error
|
| | | * @arg CEC_IT_TBTF: Tx Block Transfer Finished
|
| | | * @arg CEC_IT_RERR: Rx Error
|
| | | * @arg CEC_IT_RBTF: Rx Block Transfer Finished
|
| | | * @retval None
|
| | | */
|
| | | void CEC_ClearITPendingBit(uint16_t CEC_IT)
|
| | | {
|
| | | uint32_t tmp = 0x0;
|
| | | |
| | | /* Check the parameters */
|
| | | assert_param(IS_CEC_GET_IT(CEC_IT));
|
| | | |
| | | tmp = CEC->CSR & 0x2;
|
| | | |
| | | /* Clear the selected CEC interrupt pending bits */
|
| | | CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_IT) & 0xFFFFFFFC) | tmp);
|
| | | }
|
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | | /**
|
| | | * @}
|
| | | */ |
| | |
|
| | | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
|
| | | /** |
| | | ****************************************************************************** |
| | | * @file stm32f10x_cec.c |
| | | * @author MCD Application Team |
| | | * @version V3.5.0 |
| | | * @date 11-March-2011 |
| | | * @brief This file provides all the CEC firmware functions. |
| | | ****************************************************************************** |
| | | * @attention |
| | | * |
| | | * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
| | | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
| | | * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
| | | * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
| | | * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
| | | * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
| | | * |
| | | * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> |
| | | ****************************************************************************** |
| | | */ |
| | | |
| | | /* Includes ------------------------------------------------------------------*/ |
| | | #include "stm32f10x_cec.h" |
| | | #include "stm32f10x_rcc.h" |
| | | |
| | | /** @addtogroup STM32F10x_StdPeriph_Driver |
| | | * @{ |
| | | */ |
| | | |
| | | /** @defgroup CEC |
| | | * @brief CEC driver modules |
| | | * @{ |
| | | */ |
| | | |
| | | /** @defgroup CEC_Private_TypesDefinitions |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | |
| | | /** @defgroup CEC_Private_Defines |
| | | * @{ |
| | | */ |
| | | |
| | | /* ------------ CEC registers bit address in the alias region ----------- */ |
| | | #define CEC_OFFSET (CEC_BASE - PERIPH_BASE) |
| | | |
| | | /* --- CFGR Register ---*/ |
| | | |
| | | /* Alias word address of PE bit */ |
| | | #define CFGR_OFFSET (CEC_OFFSET + 0x00) |
| | | #define PE_BitNumber 0x00 |
| | | #define CFGR_PE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (PE_BitNumber * 4)) |
| | | |
| | | /* Alias word address of IE bit */ |
| | | #define IE_BitNumber 0x01 |
| | | #define CFGR_IE_BB (PERIPH_BB_BASE + (CFGR_OFFSET * 32) + (IE_BitNumber * 4)) |
| | | |
| | | /* --- CSR Register ---*/ |
| | | |
| | | /* Alias word address of TSOM bit */ |
| | | #define CSR_OFFSET (CEC_OFFSET + 0x10) |
| | | #define TSOM_BitNumber 0x00 |
| | | #define CSR_TSOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TSOM_BitNumber * 4)) |
| | | |
| | | /* Alias word address of TEOM bit */ |
| | | #define TEOM_BitNumber 0x01 |
| | | #define CSR_TEOM_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TEOM_BitNumber * 4)) |
| | | |
| | | #define CFGR_CLEAR_Mask (uint8_t)(0xF3) /* CFGR register Mask */ |
| | | #define FLAG_Mask ((uint32_t)0x00FFFFFF) /* CEC FLAG mask */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | |
| | | /** @defgroup CEC_Private_Macros |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | |
| | | /** @defgroup CEC_Private_Variables |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | |
| | | /** @defgroup CEC_Private_FunctionPrototypes |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | |
| | | /** @defgroup CEC_Private_Functions |
| | | * @{ |
| | | */ |
| | | |
| | | /** |
| | | * @brief Deinitializes the CEC peripheral registers to their default reset |
| | | * values. |
| | | * @param None |
| | | * @retval None |
| | | */ |
| | | void CEC_DeInit(void) |
| | | { |
| | | /* Enable CEC reset state */ |
| | | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, ENABLE); |
| | | /* Release CEC from reset state */ |
| | | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CEC, DISABLE); |
| | | } |
| | | |
| | | |
| | | /** |
| | | * @brief Initializes the CEC peripheral according to the specified |
| | | * parameters in the CEC_InitStruct. |
| | | * @param CEC_InitStruct: pointer to an CEC_InitTypeDef structure that |
| | | * contains the configuration information for the specified |
| | | * CEC peripheral. |
| | | * @retval None |
| | | */ |
| | | void CEC_Init(CEC_InitTypeDef* CEC_InitStruct) |
| | | { |
| | | uint16_t tmpreg = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_BIT_TIMING_ERROR_MODE(CEC_InitStruct->CEC_BitTimingMode)); |
| | | assert_param(IS_CEC_BIT_PERIOD_ERROR_MODE(CEC_InitStruct->CEC_BitPeriodMode)); |
| | | |
| | | /*---------------------------- CEC CFGR Configuration -----------------*/ |
| | | /* Get the CEC CFGR value */ |
| | | tmpreg = CEC->CFGR; |
| | | |
| | | /* Clear BTEM and BPEM bits */ |
| | | tmpreg &= CFGR_CLEAR_Mask; |
| | | |
| | | /* Configure CEC: Bit Timing Error and Bit Period Error */ |
| | | tmpreg |= (uint16_t)(CEC_InitStruct->CEC_BitTimingMode | CEC_InitStruct->CEC_BitPeriodMode); |
| | | |
| | | /* Write to CEC CFGR register*/ |
| | | CEC->CFGR = tmpreg; |
| | | |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the specified CEC peripheral. |
| | | * @param NewState: new state of the CEC peripheral. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void CEC_Cmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | *(__IO uint32_t *) CFGR_PE_BB = (uint32_t)NewState; |
| | | |
| | | if(NewState == DISABLE) |
| | | { |
| | | /* Wait until the PE bit is cleared by hardware (Idle Line detected) */ |
| | | while((CEC->CFGR & CEC_CFGR_PE) != (uint32_t)RESET) |
| | | { |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * @brief Enables or disables the CEC interrupt. |
| | | * @param NewState: new state of the CEC interrupt. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void CEC_ITConfig(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | *(__IO uint32_t *) CFGR_IE_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Defines the Own Address of the CEC device. |
| | | * @param CEC_OwnAddress: The CEC own address |
| | | * @retval None |
| | | */ |
| | | void CEC_OwnAddressConfig(uint8_t CEC_OwnAddress) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_ADDRESS(CEC_OwnAddress)); |
| | | |
| | | /* Set the CEC own address */ |
| | | CEC->OAR = CEC_OwnAddress; |
| | | } |
| | | |
| | | /** |
| | | * @brief Sets the CEC prescaler value. |
| | | * @param CEC_Prescaler: CEC prescaler new value |
| | | * @retval None |
| | | */ |
| | | void CEC_SetPrescaler(uint16_t CEC_Prescaler) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_PRESCALER(CEC_Prescaler)); |
| | | |
| | | /* Set the Prescaler value*/ |
| | | CEC->PRES = CEC_Prescaler; |
| | | } |
| | | |
| | | /** |
| | | * @brief Transmits single data through the CEC peripheral. |
| | | * @param Data: the data to transmit. |
| | | * @retval None |
| | | */ |
| | | void CEC_SendDataByte(uint8_t Data) |
| | | { |
| | | /* Transmit Data */ |
| | | CEC->TXD = Data ; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * @brief Returns the most recent received data by the CEC peripheral. |
| | | * @param None |
| | | * @retval The received data. |
| | | */ |
| | | uint8_t CEC_ReceiveDataByte(void) |
| | | { |
| | | /* Receive Data */ |
| | | return (uint8_t)(CEC->RXD); |
| | | } |
| | | |
| | | /** |
| | | * @brief Starts a new message. |
| | | * @param None |
| | | * @retval None |
| | | */ |
| | | void CEC_StartOfMessage(void) |
| | | { |
| | | /* Starts of new message */ |
| | | *(__IO uint32_t *) CSR_TSOM_BB = (uint32_t)0x1; |
| | | } |
| | | |
| | | /** |
| | | * @brief Transmits message with or without an EOM bit. |
| | | * @param NewState: new state of the CEC Tx End Of Message. |
| | | * This parameter can be: ENABLE or DISABLE. |
| | | * @retval None |
| | | */ |
| | | void CEC_EndOfMessageCmd(FunctionalState NewState) |
| | | { |
| | | /* Check the parameters */ |
| | | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| | | |
| | | /* The data byte will be transmitted with or without an EOM bit*/ |
| | | *(__IO uint32_t *) CSR_TEOM_BB = (uint32_t)NewState; |
| | | } |
| | | |
| | | /** |
| | | * @brief Gets the CEC flag status |
| | | * @param CEC_FLAG: specifies the CEC flag to check. |
| | | * This parameter can be one of the following values: |
| | | * @arg CEC_FLAG_BTE: Bit Timing Error |
| | | * @arg CEC_FLAG_BPE: Bit Period Error |
| | | * @arg CEC_FLAG_RBTFE: Rx Block Transfer Finished Error |
| | | * @arg CEC_FLAG_SBE: Start Bit Error |
| | | * @arg CEC_FLAG_ACKE: Block Acknowledge Error |
| | | * @arg CEC_FLAG_LINE: Line Error |
| | | * @arg CEC_FLAG_TBTFE: Tx Block Transfer Finished Error |
| | | * @arg CEC_FLAG_TEOM: Tx End Of Message |
| | | * @arg CEC_FLAG_TERR: Tx Error |
| | | * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished |
| | | * @arg CEC_FLAG_RSOM: Rx Start Of Message |
| | | * @arg CEC_FLAG_REOM: Rx End Of Message |
| | | * @arg CEC_FLAG_RERR: Rx Error |
| | | * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished |
| | | * @retval The new state of CEC_FLAG (SET or RESET) |
| | | */ |
| | | FlagStatus CEC_GetFlagStatus(uint32_t CEC_FLAG) |
| | | { |
| | | FlagStatus bitstatus = RESET; |
| | | uint32_t cecreg = 0, cecbase = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_GET_FLAG(CEC_FLAG)); |
| | | |
| | | /* Get the CEC peripheral base address */ |
| | | cecbase = (uint32_t)(CEC_BASE); |
| | | |
| | | /* Read flag register index */ |
| | | cecreg = CEC_FLAG >> 28; |
| | | |
| | | /* Get bit[23:0] of the flag */ |
| | | CEC_FLAG &= FLAG_Mask; |
| | | |
| | | if(cecreg != 0) |
| | | { |
| | | /* Flag in CEC ESR Register */ |
| | | CEC_FLAG = (uint32_t)(CEC_FLAG >> 16); |
| | | |
| | | /* Get the CEC ESR register address */ |
| | | cecbase += 0xC; |
| | | } |
| | | else |
| | | { |
| | | /* Get the CEC CSR register address */ |
| | | cecbase += 0x10; |
| | | } |
| | | |
| | | if(((*(__IO uint32_t *)cecbase) & CEC_FLAG) != (uint32_t)RESET) |
| | | { |
| | | /* CEC_FLAG is set */ |
| | | bitstatus = SET; |
| | | } |
| | | else |
| | | { |
| | | /* CEC_FLAG is reset */ |
| | | bitstatus = RESET; |
| | | } |
| | | |
| | | /* Return the CEC_FLAG status */ |
| | | return bitstatus; |
| | | } |
| | | |
| | | /** |
| | | * @brief Clears the CEC's pending flags. |
| | | * @param CEC_FLAG: specifies the flag to clear. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg CEC_FLAG_TERR: Tx Error |
| | | * @arg CEC_FLAG_TBTRF: Tx Byte Transfer Request or Block Transfer Finished |
| | | * @arg CEC_FLAG_RSOM: Rx Start Of Message |
| | | * @arg CEC_FLAG_REOM: Rx End Of Message |
| | | * @arg CEC_FLAG_RERR: Rx Error |
| | | * @arg CEC_FLAG_RBTF: Rx Byte/Block Transfer Finished |
| | | * @retval None |
| | | */ |
| | | void CEC_ClearFlag(uint32_t CEC_FLAG) |
| | | { |
| | | uint32_t tmp = 0x0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_CLEAR_FLAG(CEC_FLAG)); |
| | | |
| | | tmp = CEC->CSR & 0x2; |
| | | |
| | | /* Clear the selected CEC flags */ |
| | | CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_FLAG) & 0xFFFFFFFC) | tmp); |
| | | } |
| | | |
| | | /** |
| | | * @brief Checks whether the specified CEC interrupt has occurred or not. |
| | | * @param CEC_IT: specifies the CEC interrupt source to check. |
| | | * This parameter can be one of the following values: |
| | | * @arg CEC_IT_TERR: Tx Error |
| | | * @arg CEC_IT_TBTF: Tx Block Transfer Finished |
| | | * @arg CEC_IT_RERR: Rx Error |
| | | * @arg CEC_IT_RBTF: Rx Block Transfer Finished |
| | | * @retval The new state of CEC_IT (SET or RESET). |
| | | */ |
| | | ITStatus CEC_GetITStatus(uint8_t CEC_IT) |
| | | { |
| | | ITStatus bitstatus = RESET; |
| | | uint32_t enablestatus = 0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_GET_IT(CEC_IT)); |
| | | |
| | | /* Get the CEC IT enable bit status */ |
| | | enablestatus = (CEC->CFGR & (uint8_t)CEC_CFGR_IE) ; |
| | | |
| | | /* Check the status of the specified CEC interrupt */ |
| | | if (((CEC->CSR & CEC_IT) != (uint32_t)RESET) && enablestatus) |
| | | { |
| | | /* CEC_IT is set */ |
| | | bitstatus = SET; |
| | | } |
| | | else |
| | | { |
| | | /* CEC_IT is reset */ |
| | | bitstatus = RESET; |
| | | } |
| | | /* Return the CEC_IT status */ |
| | | return bitstatus; |
| | | } |
| | | |
| | | /** |
| | | * @brief Clears the CEC's interrupt pending bits. |
| | | * @param CEC_IT: specifies the CEC interrupt pending bit to clear. |
| | | * This parameter can be any combination of the following values: |
| | | * @arg CEC_IT_TERR: Tx Error |
| | | * @arg CEC_IT_TBTF: Tx Block Transfer Finished |
| | | * @arg CEC_IT_RERR: Rx Error |
| | | * @arg CEC_IT_RBTF: Rx Block Transfer Finished |
| | | * @retval None |
| | | */ |
| | | void CEC_ClearITPendingBit(uint16_t CEC_IT) |
| | | { |
| | | uint32_t tmp = 0x0; |
| | | |
| | | /* Check the parameters */ |
| | | assert_param(IS_CEC_GET_IT(CEC_IT)); |
| | | |
| | | tmp = CEC->CSR & 0x2; |
| | | |
| | | /* Clear the selected CEC interrupt pending bits */ |
| | | CEC->CSR &= (uint32_t)(((~(uint32_t)CEC_IT) & 0xFFFFFFFC) | tmp); |
| | | } |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /** |
| | | * @} |
| | | */ |
| | | |
| | | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |