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Diffstat (limited to 'watch-library/hal/include/hpl_usart_sync.h')
-rw-r--r-- | watch-library/hal/include/hpl_usart_sync.h | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/watch-library/hal/include/hpl_usart_sync.h b/watch-library/hal/include/hpl_usart_sync.h new file mode 100644 index 00000000..abc7264f --- /dev/null +++ b/watch-library/hal/include/hpl_usart_sync.h @@ -0,0 +1,254 @@ +/** + * \file + * + * \brief USART related functionality declaration. + * + * Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries. + * + * \asf_license_start + * + * \page License + * + * Subject to your compliance with these terms, you may use Microchip + * software and any derivatives exclusively with Microchip products. + * It is your responsibility to comply with third party license terms applicable + * to your use of third party software (including open source software) that + * may accompany Microchip software. + * + * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, + * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, + * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, + * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE + * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL + * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE + * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE + * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT + * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY + * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, + * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. + * + * \asf_license_stop + * + */ + +#ifndef _HPL_SYNC_USART_H_INCLUDED +#define _HPL_SYNC_USART_H_INCLUDED + +/** + * \addtogroup HPL USART SYNC + * + * \section hpl_usart_sync_rev Revision History + * - v1.0.0 Initial Release + * + *@{ + */ + +#include <hpl_usart.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief USART descriptor device structure + */ +struct _usart_sync_device { + void *hw; +}; + +/** + * \name HPL functions + */ +//@{ +/** + * \brief Initialize synchronous USART + * + * This function does low level USART configuration. + * + * \param[in] device The pointer to USART device instance + * \param[in] hw The pointer to hardware instance + * + * \return Initialization status + */ +int32_t _usart_sync_init(struct _usart_sync_device *const device, void *const hw); + +/** + * \brief Deinitialize USART + * + * This function closes the given USART by disabling its clock. + * + * \param[in] device The pointer to USART device instance + */ +void _usart_sync_deinit(struct _usart_sync_device *const device); + +/** + * \brief Enable usart module + * + * This function will enable the usart module + * + * \param[in] device The pointer to USART device instance + */ +void _usart_sync_enable(struct _usart_sync_device *const device); + +/** + * \brief Disable usart module + * + * This function will disable the usart module + * + * \param[in] device The pointer to USART device instance + */ +void _usart_sync_disable(struct _usart_sync_device *const device); + +/** + * \brief Calculate baud rate register value + * + * \param[in] baud Required baud rate + * \param[in] clock_rate clock frequency + * \param[in] samples The number of samples + * \param[in] mode USART mode + * \param[in] fraction A fraction value + * + * \return Calculated baud rate register value + */ +uint16_t _usart_sync_calculate_baud_rate(const uint32_t baud, const uint32_t clock_rate, const uint8_t samples, + const enum usart_baud_rate_mode mode, const uint8_t fraction); + +/** + * \brief Set baud rate + * + * \param[in] device The pointer to USART device instance + * \param[in] baud_rate A baud rate to set + */ +void _usart_sync_set_baud_rate(struct _usart_sync_device *const device, const uint32_t baud_rate); + +/** + * \brief Set data order + * + * \param[in] device The pointer to USART device instance + * \param[in] order A data order to set + */ +void _usart_sync_set_data_order(struct _usart_sync_device *const device, const enum usart_data_order order); + +/** + * \brief Set mode + * + * \param[in] device The pointer to USART device instance + * \param[in] mode A mode to set + */ +void _usart_sync_set_mode(struct _usart_sync_device *const device, const enum usart_mode mode); + +/** + * \brief Set parity + * + * \param[in] device The pointer to USART device instance + * \param[in] parity A parity to set + */ +void _usart_sync_set_parity(struct _usart_sync_device *const device, const enum usart_parity parity); + +/** + * \brief Set stop bits mode + * + * \param[in] device The pointer to USART device instance + * \param[in] stop_bits A stop bits mode to set + */ +void _usart_sync_set_stop_bits(struct _usart_sync_device *const device, const enum usart_stop_bits stop_bits); + +/** + * \brief Set character size + * + * \param[in] device The pointer to USART device instance + * \param[in] size A character size to set + */ +void _usart_sync_set_character_size(struct _usart_sync_device *const device, const enum usart_character_size size); + +/** + * \brief Retrieve usart status + * + * \param[in] device The pointer to USART device instance + */ +uint32_t _usart_sync_get_status(const struct _usart_sync_device *const device); + +/** + * \brief Write a byte to the given USART instance + * + * \param[in] device The pointer to USART device instance + * \param[in] data Data to write + */ +void _usart_sync_write_byte(struct _usart_sync_device *const device, uint8_t data); + +/** + * \brief Read a byte from the given USART instance + * + * \param[in] device The pointer to USART device instance + * \param[in] data Data to write + * + * \return Data received via USART interface. + */ +uint8_t _usart_sync_read_byte(const struct _usart_sync_device *const device); + +/** + * \brief Check if USART is ready to send next byte + * + * \param[in] device The pointer to USART device instance + * + * \return Status of the ready check. + * \retval true if the USART is ready to send next byte + * \retval false if the USART is not ready to send next byte + */ +bool _usart_sync_is_ready_to_send(const struct _usart_sync_device *const device); + +/** + * \brief Check if USART transmitter has sent the byte + * + * \param[in] device The pointer to USART device instance + * + * \return Status of the ready check. + * \retval true if the USART transmitter has sent the byte + * \retval false if the USART transmitter has not send the byte + */ +bool _usart_sync_is_transmit_done(const struct _usart_sync_device *const device); + +/** + * \brief Check if there is data received by USART + * + * \param[in] device The pointer to USART device instance + * + * \return Status of the data received check. + * \retval true if the USART has received a byte + * \retval false if the USART has not received a byte + */ +bool _usart_sync_is_byte_received(const struct _usart_sync_device *const device); + +/** + * \brief Set the state of flow control pins + * + * \param[in] device The pointer to USART device instance + * \param[in] state - A state of flow control pins to set + */ +void _usart_sync_set_flow_control_state(struct _usart_sync_device *const device, + const union usart_flow_control_state state); + +/** + * \brief Retrieve the state of flow control pins + * + * This function retrieves the of flow control pins. + * + * \return USART_FLOW_CONTROL_STATE_UNAVAILABLE. + */ +union usart_flow_control_state _usart_sync_get_flow_control_state(const struct _usart_sync_device *const device); + +/** + * \brief Retrieve ordinal number of the given USART hardware instance + * + * \param[in] device The pointer to USART device instance + * + * \return The ordinal number of the given USART hardware instance + */ +uint8_t _usart_sync_get_hardware_index(const struct _usart_sync_device *const device); +//@} + +#ifdef __cplusplus +} +#endif +/**@}*/ +#endif /* _HPL_SYNC_USART_H_INCLUDED */ |