/** * @file xmc_uart.h * @date 2016-05-20 * * @cond ********************************************************************************************************************* * XMClib v2.1.16 - XMC Peripheral Driver Library * * Copyright (c) 2015-2017, Infineon Technologies AG * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification,are permitted provided that the * following conditions are met: * * Redistributions of source code must retain the above copyright notice, this list of conditions and the following * disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided with the distribution. * * Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote * products derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * To improve the quality of the software, users are encouraged to share modifications, enhancements or bug fixes with * Infineon Technologies AG dave@infineon.com). ********************************************************************************************************************* * * Change History * -------------- * * 2015-02-20: * - Initial * * 2015-05-20: * - Description updated
* - Added XMC_UART_CH_TriggerServiceRequest() and XMC_UART_CH_SelectInterruptNodePointer
* * 2015-06-20: * - Removed version macros and declaration of GetDriverVersion API
* * 2015-09-01: * - Modified XMC_UART_CH_SetInputSource() for avoiding complete DXCR register overwriting.
* - Modified XMC_UART_CH_EVENT_t enum for supporting XMC_UART_CH_EnableEvent() and XMC_UART_CH_DisableEvent() * for supporting multiple events configuration
* * 2016-05-20: * - Added XMC_UART_CH_EnableDataTransmission() and XMC_UART_CH_DisableDataTransmission() * * @endcond * */ #ifndef XMC_UART_H #define XMC_UART_H /********************************************************************************************************************* * HEADER FILES *********************************************************************************************************************/ #include "xmc_usic.h" /** * @addtogroup XMClib XMC Peripheral Library * @{ */ /** * @addtogroup UART * @brief Universal Asynchronous Receiver/Transmitter (UART) driver for XMC microcontroller family. * * The UART driver uses Universal Serial Interface Channel(USIC) module to implement UART protocol. * It provides APIs to configure USIC channel for UART communication. The driver enables the user * in getting the status of UART protocol events, configuring interrupt service requests, protocol * related parameter configuration etc. * * UART driver features: * -# Configuration structure XMC_UART_CH_CONFIG_t and initialization function XMC_UART_CH_Init() * -# Enumeration of events with their bit masks @ref XMC_UART_CH_EVENT_t, @ref XMC_UART_CH_STATUS_FLAG_t * -# Allows the selection of input source for the DX0 input stage using the API XMC_UART_CH_SetInputSource() * -# Allows configuration of baudrate using XMC_UART_CH_SetBaudrate() and configuration of data length using XMC_UART_CH_SetWordLength() and XMC_UART_CH_SetFrameLength() * -# Provides the status of UART protocol events, XMC_UART_CH_GetStatusFlag() * -# Allows transmission of data using XMC_UART_CH_Transmit() and gets received data using XMC_UART_CH_GetReceivedData() * * @{ */ /********************************************************************************************************************* * MACROS *********************************************************************************************************************/ #if defined(USIC0) #define XMC_UART0_CH0 XMC_USIC0_CH0 /**< USIC0 channel 0 base address */ #define XMC_UART0_CH1 XMC_USIC0_CH1 /**< USIC0 channel 1 base address */ #endif #if defined(USIC1) #define XMC_UART1_CH0 XMC_USIC1_CH0 /**< USIC1 channel 0 base address */ #define XMC_UART1_CH1 XMC_USIC1_CH1 /**< USIC1 channel 1 base address */ #endif #if defined(USIC2) #define XMC_UART2_CH0 XMC_USIC2_CH0 /**< USIC2 channel 0 base address */ #define XMC_UART2_CH1 XMC_USIC2_CH1 /**< USIC2 channel 1 base address */ #endif /********************************************************************************************************************* * ENUMS *********************************************************************************************************************/ /** * UART driver status */ typedef enum XMC_UART_CH_STATUS { XMC_UART_CH_STATUS_OK, /**< UART driver status : OK*/ XMC_UART_CH_STATUS_ERROR, /**< UART driver status : ERROR */ XMC_UART_CH_STATUS_BUSY /**< UART driver status : BUSY */ } XMC_UART_CH_STATUS_t; /** * UART portocol status. The enum values can be used for getting the status of UART channel. * */ typedef enum XMC_UART_CH_STATUS_FLAG { XMC_UART_CH_STATUS_FLAG_TRANSMISSION_IDLE = USIC_CH_PSR_ASCMode_TXIDLE_Msk, /**< UART Protocol Status transmit IDLE*/ XMC_UART_CH_STATUS_FLAG_RECEPTION_IDLE = USIC_CH_PSR_ASCMode_RXIDLE_Msk, /**< UART Protocol Status receive IDLE*/ XMC_UART_CH_STATUS_FLAG_SYNCHRONIZATION_BREAK_DETECTED = USIC_CH_PSR_ASCMode_SBD_Msk, /**< UART Protocol Status synchronization break detected*/ XMC_UART_CH_STATUS_FLAG_COLLISION_DETECTED = USIC_CH_PSR_ASCMode_COL_Msk, /**< UART Protocol Status collision detected*/ XMC_UART_CH_STATUS_FLAG_RECEIVER_NOISE_DETECTED = USIC_CH_PSR_ASCMode_RNS_Msk, /**< UART Protocol Status receiver noise detected */ XMC_UART_CH_STATUS_FLAG_FORMAT_ERROR_IN_STOP_BIT_0 = USIC_CH_PSR_ASCMode_FER0_Msk, /**< UART Protocol Status format error in stop bit 0 */ XMC_UART_CH_STATUS_FLAG_FORMAT_ERROR_IN_STOP_BIT_1 = USIC_CH_PSR_ASCMode_FER1_Msk, /**< UART Protocol Status format error in stop bit 1 */ XMC_UART_CH_STATUS_FLAG_RECEIVE_FRAME_FINISHED = USIC_CH_PSR_ASCMode_RFF_Msk, /**< UART Protocol Status receive frame finished */ XMC_UART_CH_STATUS_FLAG_TRANSMITTER_FRAME_FINISHED = USIC_CH_PSR_ASCMode_TFF_Msk, /**< UART Protocol Status transmit frame finished */ XMC_UART_CH_STATUS_FLAG_TRANSFER_STATUS_BUSY = USIC_CH_PSR_ASCMode_BUSY_Msk, /**< UART Protocol Status transfer status busy */ XMC_UART_CH_STATUS_FLAG_RECEIVER_START_INDICATION = USIC_CH_PSR_ASCMode_RSIF_Msk, /**< UART Protocol Status receive start indication flag*/ XMC_UART_CH_STATUS_FLAG_DATA_LOST_INDICATION = USIC_CH_PSR_ASCMode_DLIF_Msk, /**< UART Protocol Status data lost indication flag*/ XMC_UART_CH_STATUS_FLAG_TRANSMIT_SHIFT_INDICATION = USIC_CH_PSR_ASCMode_TSIF_Msk, /**< UART Protocol Status transmit shift indication flag*/ XMC_UART_CH_STATUS_FLAG_TRANSMIT_BUFFER_INDICATION = USIC_CH_PSR_ASCMode_TBIF_Msk, /**< UART Protocol Status transmit buffer indication flag*/ XMC_UART_CH_STATUS_FLAG_RECEIVE_INDICATION = USIC_CH_PSR_ASCMode_RIF_Msk, /**< UART Protocol Status receive indication flag*/ XMC_UART_CH_STATUS_FLAG_ALTERNATIVE_RECEIVE_INDICATION = USIC_CH_PSR_ASCMode_AIF_Msk, /**< UART Protocol Status alternative receive indication flag*/ XMC_UART_CH_STATUS_FLAG_BAUD_RATE_GENERATOR_INDICATION = USIC_CH_PSR_ASCMode_BRGIF_Msk /**< UART Protocol Status baudrate generator indication flag*/ } XMC_UART_CH_STATUS_FLAG_t; /** * UART configuration events. The enums can be used for configuring events using the CCR register. */ typedef enum XMC_CH_UART_EVENT { XMC_UART_CH_EVENT_RECEIVE_START = USIC_CH_CCR_RSIEN_Msk, /**< Receive start event */ XMC_UART_CH_EVENT_DATA_LOST = USIC_CH_CCR_DLIEN_Msk, /**< Data lost event */ XMC_UART_CH_EVENT_TRANSMIT_SHIFT = USIC_CH_CCR_TSIEN_Msk, /**< Transmit shift event */ XMC_UART_CH_EVENT_TRANSMIT_BUFFER = USIC_CH_CCR_TBIEN_Msk, /**< Transmit buffer event */ XMC_UART_CH_EVENT_STANDARD_RECEIVE = USIC_CH_CCR_RIEN_Msk, /**< Receive event */ XMC_UART_CH_EVENT_ALTERNATIVE_RECEIVE = USIC_CH_CCR_AIEN_Msk, /**< Alternate receive event */ XMC_UART_CH_EVENT_BAUD_RATE_GENERATOR = USIC_CH_CCR_BRGIEN_Msk, /**< Baudrate generator event */ XMC_UART_CH_EVENT_SYNCHRONIZATION_BREAK = USIC_CH_PCR_ASCMode_SBIEN_Msk, /**< Event synchronization break */ XMC_UART_CH_EVENT_COLLISION = USIC_CH_PCR_ASCMode_CDEN_Msk, /**< Event collision */ XMC_UART_CH_EVENT_RECEIVER_NOISE = USIC_CH_PCR_ASCMode_RNIEN_Msk, /**< Event receiver noise */ XMC_UART_CH_EVENT_FORMAT_ERROR = USIC_CH_PCR_ASCMode_FEIEN_Msk, /**< Event format error */ XMC_UART_CH_EVENT_FRAME_FINISHED = USIC_CH_PCR_ASCMode_FFIEN_Msk /**< Event frame finished */ } XMC_UART_CH_EVENT_t; /** * UART Input sampling frequency options */ typedef enum XMC_UART_CH_INPUT_SAMPLING_FREQ { XMC_UART_CH_INPUT_SAMPLING_FREQ_FPERIPH = XMC_USIC_CH_INPUT_SAMPLING_FREQ_FPERIPH, /**< Sampling frequency input fperiph*/ XMC_UART_CH_INPUT_SAMPLING_FREQ_FRACTIONAL_DIVIDER = XMC_USIC_CH_INPUT_SAMPLING_FREQ_FRACTIONAL_DIVIDER /**< Sampling frequency input fractional divider*/ } XMC_UART_CH_INPUT_SAMPLING_FREQ_t; /** * UART input stages */ typedef enum XMC_UART_CH_INPUT { XMC_UART_CH_INPUT_RXD = 0UL /**< UART input stage DX0*/ #if UC_FAMILY == XMC1 , XMC_UART_CH_INPUT_RXD1 = 3UL, /**< UART input stage DX3*/ XMC_UART_CH_INPUT_RXD2 = 5UL /**< UART input stage DX5*/ #endif } XMC_UART_CH_INPUT_t; /** * UART channel interrupt node pointers */ typedef enum XMC_UART_CH_INTERRUPT_NODE_POINTER { XMC_UART_CH_INTERRUPT_NODE_POINTER_TRANSMIT_SHIFT = XMC_USIC_CH_INTERRUPT_NODE_POINTER_TRANSMIT_SHIFT, /**< Node pointer for transmit shift interrupt */ XMC_UART_CH_INTERRUPT_NODE_POINTER_TRANSMIT_BUFFER = XMC_USIC_CH_INTERRUPT_NODE_POINTER_TRANSMIT_BUFFER, /**< Node pointer for transmit buffer interrupt */ XMC_UART_CH_INTERRUPT_NODE_POINTER_RECEIVE = XMC_USIC_CH_INTERRUPT_NODE_POINTER_RECEIVE, /**< Node pointer for receive interrupt */ XMC_UART_CH_INTERRUPT_NODE_POINTER_ALTERNATE_RECEIVE = XMC_USIC_CH_INTERRUPT_NODE_POINTER_ALTERNATE_RECEIVE, /**< Node pointer for alternate receive interrupt */ XMC_UART_CH_INTERRUPT_NODE_POINTER_PROTOCOL = XMC_USIC_CH_INTERRUPT_NODE_POINTER_PROTOCOL /**< Node pointer for protocol related interrupts */ } XMC_UART_CH_INTERRUPT_NODE_POINTER_t; /********************************************************************************************************************* * DATA STRUCTURES *********************************************************************************************************************/ /** * UART initialization structure */ typedef struct XMC_UART_CH_CONFIG { uint32_t baudrate; /**< Desired baudrate. \b Range: minimum= 100, maximum= (fPERIPH * 1023)/(1024 * oversampling) */ uint8_t data_bits; /**< Number of bits for the data field. Value configured as USIC channel word length. \n \b Range: minimum= 1, maximum= 16*/ uint8_t frame_length; /**< Indicates nmber of bits in a frame. Configured as USIC channel frame length. \n \b Range: minimum= 1, maximum= 63*/ uint8_t stop_bits; /**< Number of stop bits. \b Range: minimum= 1, maximum= 2 */ uint8_t oversampling; /**< Number of samples for a symbol(DCTQ).\b Range: minimum= 1, maximum= 32*/ XMC_USIC_CH_PARITY_MODE_t parity_mode; /**< Parity mode. \b Range: @ref XMC_USIC_CH_PARITY_MODE_NONE, @ref XMC_USIC_CH_PARITY_MODE_EVEN, \n @ref XMC_USIC_CH_PARITY_MODE_ODD*/ } XMC_UART_CH_CONFIG_t; /********************************************************************************************************************* * API PROTOTYPES *********************************************************************************************************************/ #ifdef __cplusplus extern "C" { #endif /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, XMC_UART0_CH1,XMC_UART1_CH0, XMC_UART1_CH1,XMC_UART2_CH0, XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param config Constant pointer to UART configuration structure of type @ref XMC_UART_CH_CONFIG_t. * @return XMC_UART_CH_STATUS_t Status of initializing the USIC channel for UART protocol.\n * \b Range: @ref XMC_UART_CH_STATUS_OK if initialization is successful.\n * @ref XMC_UART_CH_STATUS_ERROR if configuration of baudrate failed. * * \parDescription
* Initializes the USIC channel for UART protocol.\n\n * During the initialization, USIC channel is enabled, baudrate is configured with the defined oversampling value * in the intialization structure. If the oversampling value is set to 0 in the structure, the default oversampling of 16 * is considered. Sampling point for each symbol is configured at the half of sampling period. Symbol value is decided by the * majority decision among 3 samples. * Word length is configured with the number of data bits. If the value of \a frame_length is 0, then USIC channel frame length * is set to the same value as word length. If \a frame_length is greater than 0, it is set as the USIC channel frame length. * Parity mode is set to the value configured for \a parity_mode. * The USIC channel should be set to UART mode by calling the XMC_UART_CH_Start() API after the initialization. * * \parRelated APIs:
* XMC_UART_CH_Start(), XMC_UART_CH_Stop(), XMC_UART_CH_Transmit()\n\n\n */ void XMC_UART_CH_Init(XMC_USIC_CH_t *const channel, const XMC_UART_CH_CONFIG_t *const config); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @return None * * \parDescription
* Sets the USIC channel operation mode to UART mode.\n\n * CCR register bitfield \a Mode is set to 2(UART mode). This API should be called after configuring * the USIC channel. Transmission and reception can happen only when the UART mode is set. * This is an inline function. * * \parRelated APIs:
* XMC_UART_CH_Stop(), XMC_UART_CH_Transmit()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_Start(XMC_USIC_CH_t *const channel) { channel->CCR = (uint32_t)(((channel->CCR) & (~USIC_CH_CCR_MODE_Msk)) | (uint32_t)XMC_USIC_CH_OPERATING_MODE_UART); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @return XMC_UART_CH_STATUS_t Status to indicate if the communication channel is stopped successfully.\n * @ref XMC_UART_CH_STATUS_OK if the communication channel is stopped. * @ref XMC_UART_CH_STATUS_BUSY if the communication channel is busy. * * \parDescription
* Stops the UART communication.\n\n * CCR register bitfield \a Mode is reset. This disables the communication. * Before starting the communication again, the channel has to be reconfigured. * * \parRelated APIs:
* XMC_UART_CH_Init() \n\n\n */ XMC_UART_CH_STATUS_t XMC_UART_CH_Stop(XMC_USIC_CH_t *const channel); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, XMC_UART0_CH1 ,XMC_UART1_CH0, XMC_UART1_CH1, XMC_UART2_CH0, XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param rate Desired baudrate. \n * \b Range: minimum value = 100, maximum value depends on the peripheral clock frequency\n * and \a oversampling. Maximum baudrate can be derived using the formula: (fperiph * 1023)/(1024 * oversampling) * @param oversampling Required oversampling. The value indicates the number of time quanta for one symbol of data.\n * This can be related to the number of samples for each logic state of the data signal.\n * \b Range: 4 to 32. Value should be chosen based on the protocol used. * @return XMC_UART_CH_STATUS_t Status indicating the baudrate configuration.\n * \b Range: @ref XMC_USIC_CH_STATUS_OK if baudrate is successfully configured, * @ref XMC_USIC_CH_STATUS_ERROR if desired baudrate or oversampling is invalid. * * \parDescription:
* Sets the bus speed in bits per second.\n\n * Derives the values of \a STEP and PDIV to arrive at the optimum realistic speed possible. * \a oversampling is the number of samples to be taken for each symbol of UART protocol. * Default \a oversampling of 16 is considered if the input \a oversampling is less than 4. It is recommended to keep * a minimum oversampling of 4 for UART. * * \parRelated APIs:
* XMC_UART_CH_Init(), XMC_UART_CH_Stop() */ XMC_UART_CH_STATUS_t XMC_UART_CH_SetBaudrate(XMC_USIC_CH_t *const channel, uint32_t rate, uint32_t oversampling); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param data Data to be transmitted. \n * \b Range: 16 bit unsigned data within the range 0 to 65535. Actual size of * data transmitted depends on the configured number of bits for the UART protocol in the register SCTR. * @return None * * \parDescription
* Transmits data over serial communication channel using UART protocol.\n\n * Based on the channel configuration, data is either put to the transmit FIFO or to TBUF register. * Before putting data to TBUF, the API waits for TBUF to finish shifting its contents to shift register. * So user can continuously execute the API without checking for TBUF busy status. Based on the number of * data bits configured, the lower significant bits will be extracted for transmission. * * Note: When FIFO is not configured, the API waits for the TBUF to be available. * This makes the execution a blocking call. * * \parRelated APIs:
* XMC_UART_CH_GetReceivedData() \n\n\n */ void XMC_UART_CH_Transmit(XMC_USIC_CH_t *const channel, const uint16_t data); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @return uint16_t Received data over UART communication channel. * \parDescription
* Provides one word of data received over UART communication channel.\n\n * Based on the channel configuration, data is either read from the receive FIFO or RBUF register. * Before returning the value, there is no check for data validity. User should check the appropriate * data receive flags(standard receive/alternative receive/FIFO standard receive/FIFO alternative receive) * before executing the API. Reading from an empty receive FIFO can generate a receive error event. * * \parRelated APIs:
* XMC_UART_CH_GetStatusFlag(), XMC_UART_CH_Transmit() \n\n\n */ uint16_t XMC_UART_CH_GetReceivedData(XMC_USIC_CH_t *const channel); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param word_length Data word length. \n * \b Range: minimum= 1, maximum= 16. * @return None * * \parDescription
* Sets the data word length in number of bits.\n\n * Word length can range from 1 to 16. It indicates the number of data bits in a data word. * The value of \a word_length will be decremented by 1 before setting the value to \a SCTR register. * If the UART data bits is more than 16, then the frame length should be set to the actual number of bits and * word length should be configured with the number of bits expected in each transaction. For example, if number of data bits * for UART communication is 20 bits, then the frame length should be set as 20. Word length can be set based on the * transmit and receive handling. If data is stored as 8bit array, then the word length can be set to 8. In this case, * a full message of UART data should be transmitted/ received as 3 data words. * * \parRelated APIs:
* XMC_UART_CH_SetFrameLength() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_SetWordLength(XMC_USIC_CH_t *const channel, const uint8_t word_length) { XMC_USIC_CH_SetWordLength(channel, word_length); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param frame_length Number of data bits in each UART frame. \n * \b Range: minimum= 1, maximum= 64. * @return None * * \parDescription
* Sets the number of data bits for UART communication.\n\n * The frame length is configured by setting the input value to \a SCTR register. * The value of \a frame_length will be decremented by 1, before setting it to the register. * Frame length should not be set to 64 for UART communication. * * \parRelated APIs:
* XMC_UART_CH_SetWordLength() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_SetFrameLength(XMC_USIC_CH_t *const channel, const uint8_t frame_length) { XMC_USIC_CH_SetFrameLength(channel, frame_length); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param event Event bitmasks to enable. Use the type @ref XMC_UART_CH_EVENT_t for naming events. \n * \b Range: @ref XMC_UART_CH_EVENT_RECEIVE_START, @ref XMC_UART_CH_EVENT_DATA_LOST, * @ref XMC_UART_CH_EVENT_TRANSMIT_SHIFT, @ref XMC_UART_CH_EVENT_TRANSMIT_BUFFER, * etc. * @return None * * \parDescription
* Enables interrupt events for UART communication.\n\n * Multiple events can be combined using the bitwise OR operation and configured in one function call. * @ref XMC_UART_CH_EVENT_t enumerates multiple event bitmasks. These enumerations can be used as input to the API. * Events are configured by setting bits in the CCR register. * \parRelated APIs:
* XMC_UART_CH_DisableEvent(), XMC_UART_CH_SetInterruptNodePointer(), XMC_UART_CH_GetStatusFlag() \n\n\n */ void XMC_UART_CH_EnableEvent(XMC_USIC_CH_t *const channel, const uint32_t event); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param event Bitmask of events to disable. Use the type @ref XMC_UART_CH_EVENT_t for naming events.\n * \b Range: @ref XMC_UART_CH_EVENT_RECEIVE_START, @ref XMC_UART_CH_EVENT_DATA_LOST, * @ref XMC_UART_CH_EVENT_TRANSMIT_SHIFT, @ref XMC_UART_CH_EVENT_TRANSMIT_BUFFER, * etc. * @return None * * \parDescription
* Disables the interrupt events by clearing the bits in CCR register.\n\n * Multiple events can be combined using the bitwise OR operation and configured in one function call. * XMC_UART_CH_EVENT_FLAG_t enumerates multiple event bitmasks. These enumerations can be used as input to the API. * * \parRelated APIs:
* XMC_UART_CH_ClearStatusFlag(), XMC_UART_CH_EnableEvent() \n\n\n */ void XMC_UART_CH_DisableEvent(XMC_USIC_CH_t *const channel, const uint32_t event); /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param service_request Service request number for generating protocol interrupts.\n * \b Range: 0 to 5. * @return None * * \parDescription
* Sets the interrupt node for UART channel protocol events.\n\n * For all the protocol events enlisted in the enumeration XMC_UART_CH_EVENT_t, one common * interrupt gets generated. The service request connects the interrupt node to the UART * protocol events. * Note: NVIC node should be separately enabled to generate the interrupt. * * \parRelated APIs:
* XMC_UART_CH_EnableEvent() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_SetInterruptNodePointer(XMC_USIC_CH_t *const channel, const uint8_t service_request) { XMC_USIC_CH_SetInterruptNodePointer(channel, XMC_USIC_CH_INTERRUPT_NODE_POINTER_PROTOCOL, (uint32_t)service_request); } /** * @param channel Pointer to USIC channel handler of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param interrupt_node Interrupt node pointer to be configured. \n * \b Range: @ref XMC_UART_CH_INTERRUPT_NODE_POINTER_TRANSMIT_SHIFT, * @ref XMC_UART_CH_INTERRUPT_NODE_POINTER_TRANSMIT_BUFFER etc. * @param service_request Service request number.\n * \b Range: 0 to 5. * @return None * * \parDescription
* Sets the interrupt node for USIC channel events. \n\n * For an event to generate interrupt, node pointer should be configured with service request(SR0, SR1..SR5). * The NVIC node gets linked to the interrupt event by doing so.
* Note: NVIC node should be separately enabled to generate the interrupt. * * \parRelated APIs:
* XMC_UART_CH_EnableEvent() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_SelectInterruptNodePointer(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INTERRUPT_NODE_POINTER_t interrupt_node, const uint32_t service_request) { XMC_USIC_CH_SetInterruptNodePointer(channel, (XMC_USIC_CH_INTERRUPT_NODE_POINTER_t)interrupt_node, (uint32_t)service_request); } /** * @param channel Pointer to USIC channel handler of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param service_request_line service request number of the event to be triggered. \n * \b Range: 0 to 5. * @return None * * \parDescription
* Trigger a UART interrupt service request.\n\n * When the UART service request is triggered, the NVIC interrupt associated with it will be * generated if enabled. * * \parRelated APIs:
* XMC_UART_CH_SelectInterruptNodePointer() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_TriggerServiceRequest(XMC_USIC_CH_t *const channel, const uint32_t service_request_line) { XMC_USIC_CH_TriggerServiceRequest(channel, (uint32_t)service_request_line); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @return Status of UART channel events. \n * \b Range: Use @ref XMC_UART_CH_STATUS_FLAG_t enumerations for * event bitmasks. @ref XMC_UART_CH_STATUS_FLAG_TRANSMISSION_IDLE, @ref XMC_UART_CH_STATUS_FLAG_RECEPTION_IDLE, * @ref XMC_UART_CH_STATUS_FLAG_SYNCHRONIZATION_BREAK_DETECTED etc. * * \parDescription
* Provides the status of UART channel events.\n\n * Status provided by the API represents the status of multiple events at their bit positions. The bitmasks can be * obtained using the enumeration XMC_UART_CH_STATUS_FLAG_t. Event status is obtained by reading * the register PSR_ASCMode. * * \parRelated APIs:
* XMC_UART_CH_EnableEvent(), XMC_UART_CH_ClearStatusFlag()\n\n\n */ __STATIC_INLINE uint32_t XMC_UART_CH_GetStatusFlag(XMC_USIC_CH_t *const channel) { return channel->PSR_ASCMode; } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param flag UART events to be cleared. \n * \b Range: Use @ref XMC_UART_CH_STATUS_FLAG_t enumerations for * event bitmasks. @ref XMC_UART_CH_STATUS_FLAG_TRANSMISSION_IDLE, @ref XMC_UART_CH_STATUS_FLAG_RECEPTION_IDLE, * @ref XMC_UART_CH_STATUS_FLAG_SYNCHRONIZATION_BREAK_DETECTED etc. * @return None * * \parDescription
* Clears the status of UART channel events.\n\n * Multiple events can be combined using the bitwise OR operation and configured in one function call. * XMC_UART_CH_STATUS_FLAG_t enumerates multiple event bitmasks. These enumerations can be used as input to the API. * Events are cleared by setting the bitmask to the PSCR register. * * \parRelated APIs:
* XMC_UART_CH_DisableEvent(), XMC_UART_CH_GetStatusFlag()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_ClearStatusFlag(XMC_USIC_CH_t *const channel, const uint32_t flag) { channel->PSCR = flag; } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @param source Input source select for the input stage. The table provided below maps the decimal value with the input source. * * *
0DXnA
1DXnB
2DXnC
3DXnD
4DXnE
5DXnF
6DXnG
7Always 1
* @return None * * \parDescription
* Sets input soource for the UART communication.\n\n * It is used for configuring the input stage for data reception. * Selects the input data signal source among DXnA, DXnB.. DXnG for the input stage. * The API can be used for the input stages DX0, DX3 and DX5. * * \parRelated APIs:
* XMC_UART_CH_EnableInputInversion() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_SetInputSource(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input, const uint8_t source) { channel->DXCR[input] = (uint32_t)(channel->DXCR[input] & (~(USIC_CH_DX0CR_INSW_Msk|USIC_CH_DX0CR_DSEN_Msk))); XMC_USIC_CH_SetInputSource(channel, (XMC_USIC_CH_INPUT_t)input, source); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param pulse_length Length of the zero pulse in number of time quanta. \n * \b Range: 0 to 7. * @return None * * \parDescription
* Sets the length of zero pulse in number of time quanta. Value 0 indicates one time quanta.\n\n * Maximum possible is 8 time quanta with the value configured as 7.\n * The value is set to PCR_ASCMode register. * \parRelated APIs:
* XMC_UART_CH_EnableInputInversion(), XMC_UART_CH_SetSamplePoint() \n\n\n * */ __STATIC_INLINE void XMC_UART_CH_SetPulseLength(XMC_USIC_CH_t *const channel, const uint8_t pulse_length) { channel->PCR_ASCMode = (uint32_t)(channel->PCR_ASCMode & (~USIC_CH_PCR_ASCMode_PL_Msk)) | ((uint32_t)pulse_length << USIC_CH_PCR_ASCMode_PL_Pos); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param sample_point Sample point among the number of samples. \n * \b Range: minimum= 0, maximum= \a oversampling (DCTQ). * @return None * * \parDescription
* Sets the sample point among the multiple samples for each UART symbol.\n\n * The sample point is the one sample among number of samples set as oversampling. The value should be less than * the oversampling value. XMC_UART_CH_Init() sets the sample point to the sample at the centre. For * example if the oversampling is 16, then the sample point is set to 9. * \parRelated APIs:
* XMC_UART_CH_EnableInputInversion(), XMC_UART_CH_SetSamplePoint() \n\n\n */ __STATIC_INLINE void XMC_UART_CH_SetSamplePoint(XMC_USIC_CH_t *const channel, const uint32_t sample_point) { channel->PCR_ASCMode = (uint32_t)((channel->PCR_ASCMode & (uint32_t)(~USIC_CH_PCR_ASCMode_SP_Msk)) | (sample_point << USIC_CH_PCR_ASCMode_SP_Pos)); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @return None * * \parDescription
* Enables input inversion for UART input data signal.\n\n * Polarity of the input source can be changed to provide inverted data input. * \parRelated APIs:
* XMC_UART_CH_DisableInputInversion()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_EnableInputInversion(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input) { XMC_USIC_CH_EnableInputInversion(channel, (XMC_USIC_CH_INPUT_t)input); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @return None * * \parDescription
* Disables input inversion for UART input data signal.\n\n * Resets the input data polarity for the UART input data signal. * \parRelated APIs:
* XMC_UART_CH_EnableInputInversion()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_DisableInputInversion(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input) { XMC_USIC_CH_DisableInputInversion(channel, (XMC_USIC_CH_INPUT_t)input); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @return None * * \parDescription
* Enables the digital filter for UART input stage.\n\n * * \parRelated APIs:
* XMC_UART_CH_DisableInputDigitalFilter()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_EnableInputDigitalFilter(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input) { XMC_USIC_CH_EnableInputDigitalFilter(channel, (XMC_USIC_CH_INPUT_t)input); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @return None * * \parDescription
* Disables the digital filter for UART input stage.\n\n * * \parRelated APIs:
* XMC_UART_CH_EnableInputDigitalFilter()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_DisableInputDigitalFilter(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input) { XMC_USIC_CH_DisableInputDigitalFilter(channel, (XMC_USIC_CH_INPUT_t)input); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @return None * \parDescription
* Enables synchronous input for the UART input stage.\n\n * * \parRelated APIs:
* XMC_UART_CH_DisableInputSync(), XMC_UART_CH_EnableInputDigitalFilter()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_EnableInputSync(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input) { XMC_USIC_CH_EnableInputSync(channel, (XMC_USIC_CH_INPUT_t)input); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @return None * * \parDescription
* Disables synchronous input for the UART input stage.\n\n * * \parRelated APIs:
* XMC_UART_CH_EnableInputSync(), XMC_UART_CH_EnableInputDigitalFilter()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_DisableInputSync(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input) { XMC_USIC_CH_DisableInputSync(channel, (XMC_USIC_CH_INPUT_t)input); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @param input UART channel input stage of type @ref XMC_UART_CH_INPUT_t. \n * \b Range: @ref XMC_UART_CH_INPUT_RXD (for DX0), * @ref XMC_UART_CH_INPUT_RXD1 (for DX3), @ref XMC_UART_CH_INPUT_RXD2 (for DX5). * @param sampling_freq Input sampling frequency. \n * \b Range: @ref XMC_UART_CH_INPUT_SAMPLING_FREQ_FPERIPH, @ref XMC_UART_CH_INPUT_SAMPLING_FREQ_FRACTIONAL_DIVIDER. * @return None * * \parDescription
* Sets the sampling frequency for the UART input stage.\n\n * * \parRelated APIs:
* XMC_UART_CH_EnableInputSync(), XMC_UART_CH_EnableInputDigitalFilter()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_SetInputSamplingFreq(XMC_USIC_CH_t *const channel, const XMC_UART_CH_INPUT_t input, const XMC_UART_CH_INPUT_SAMPLING_FREQ_t sampling_freq) { XMC_USIC_CH_SetInputSamplingFreq(channel, (XMC_USIC_CH_INPUT_t)input, (XMC_USIC_CH_INPUT_SAMPLING_FREQ_t)sampling_freq); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @return None * * \parDescription
* Enable data transmission.\n\n * Use this function in combination with XMC_UART_CH_DisableDataTransmission() to fill the FIFO and send the FIFO content without gaps in the transmission. * FIFO is filled using XMC_USIC_CH_TXFIFO_PutData(). * @note If you need more control over the start of transmission use XMC_USIC_CH_SetStartTransmisionMode() * * \parRelated APIs:
* XMC_UART_CH_DisableDataTransmission()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_EnableDataTransmission(XMC_USIC_CH_t *const channel) { XMC_USIC_CH_SetStartTransmisionMode(channel, XMC_USIC_CH_START_TRANSMISION_ON_TDV); } /** * @param channel Constant pointer to USIC channel handle of type @ref XMC_USIC_CH_t \n * \b Range: @ref XMC_UART0_CH0, @ref XMC_UART0_CH1,@ref XMC_UART1_CH0,@ref XMC_UART1_CH1,@ref XMC_UART2_CH0,@ref XMC_UART2_CH1 @note Availability of UART1 and UART2 depends on device selection * @return None * * \parDescription
* Disable data transmission.\n\n * Use this function in combination with XMC_UART_CH_EnableDataTransmission() to fill the FIFO and send the FIFO content without gaps in the transmission. * FIFO is filled using XMC_USIC_CH_TXFIFO_PutData(). * * \parRelated APIs:
* XMC_UART_CH_EnableDataTransmission()\n\n\n */ __STATIC_INLINE void XMC_UART_CH_DisableDataTransmission(XMC_USIC_CH_t *const channel) { XMC_USIC_CH_SetStartTransmisionMode(channel, XMC_USIC_CH_START_TRANSMISION_DISABLED); } #ifdef __cplusplus } #endif /** * @} */ /** * @} */ #endif