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Diffstat (limited to 'watch-library/hal/include/hpl_i2c_m_async.h')
| -rw-r--r-- | watch-library/hal/include/hpl_i2c_m_async.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/watch-library/hal/include/hpl_i2c_m_async.h b/watch-library/hal/include/hpl_i2c_m_async.h new file mode 100644 index 00000000..8a9491de --- /dev/null +++ b/watch-library/hal/include/hpl_i2c_m_async.h @@ -0,0 +1,205 @@ +/** + * \file + * + * \brief I2C Master Hardware Proxy Layer(HPL) declaration. + * + * Copyright (c) 2015-2018 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_I2C_M_ASYNC_H_INCLUDED +#define _HPL_I2C_M_ASYNC_H_INCLUDED + +#include "hpl_i2c_m_sync.h" +#include "hpl_irq.h" +#include "utils.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief i2c master callback names + */ +enum _i2c_m_async_callback_type { + I2C_M_ASYNC_DEVICE_ERROR, + I2C_M_ASYNC_DEVICE_TX_COMPLETE, + I2C_M_ASYNC_DEVICE_RX_COMPLETE +}; + +struct _i2c_m_async_device; + +typedef void (*_i2c_complete_cb_t)(struct _i2c_m_async_device *i2c_dev); +typedef void (*_i2c_error_cb_t)(struct _i2c_m_async_device *i2c_dev, int32_t errcode); + +/** + * \brief i2c callback pointers structure + */ +struct _i2c_m_async_callback { + _i2c_error_cb_t error; + _i2c_complete_cb_t tx_complete; + _i2c_complete_cb_t rx_complete; +}; + +/** + * \brief i2c device structure + */ +struct _i2c_m_async_device { + struct _i2c_m_service service; + void * hw; + struct _i2c_m_async_callback cb; + struct _irq_descriptor irq; +}; + +/** + * \name HPL functions + */ + +/** + * \brief Initialize I2C in interrupt mode + * + * This function does low level I2C configuration. + * + * \param[in] i2c_dev The pointer to i2c interrupt device structure + * \param[in] hw The pointer to hardware instance + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_init(struct _i2c_m_async_device *const i2c_dev, void *const hw); + +/** + * \brief Deinitialize I2C in interrupt mode + * + * \param[in] i2c_dev The pointer to i2c device structure + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_deinit(struct _i2c_m_async_device *const i2c_dev); + +/** + * \brief Enable I2C module + * + * This function does low level I2C enable. + * + * \param[in] i2c_dev The pointer to i2c device structure + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_enable(struct _i2c_m_async_device *const i2c_dev); + +/** + * \brief Disable I2C module + * + * This function does low level I2C disable. + * + * \param[in] i2c_dev The pointer to i2c device structure + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_disable(struct _i2c_m_async_device *const i2c_dev); + +/** + * \brief Transfer data by I2C + * + * This function does low level I2C data transfer. + * + * \param[in] i2c_dev The pointer to i2c device structure + * \param[in] msg The pointer to i2c msg structure + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_transfer(struct _i2c_m_async_device *const i2c_dev, struct _i2c_m_msg *msg); + +/** + * \brief Set baud rate of I2C + * + * This function does low level I2C set baud rate. + * + * \param[in] i2c_dev The pointer to i2c device structure + * \param[in] clkrate The clock rate(KHz) input to i2c module + * \param[in] baudrate The demand baud rate(KHz) of i2c module + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_set_baudrate(struct _i2c_m_async_device *const i2c_dev, uint32_t clkrate, uint32_t baudrate); + +/** + * \brief Register callback to I2C + * + * This function does low level I2C callback register. + * + * \param[in] i2c_dev The pointer to i2c device structure + * \param[in] cb_type The callback type request + * \param[in] func The callback function pointer + * + * \return Return 0 for success and negative value for error + */ +int32_t _i2c_m_async_register_callback(struct _i2c_m_async_device *i2c_dev, enum _i2c_m_async_callback_type cb_type, + FUNC_PTR func); + +/** + * \brief Generate stop condition on the I2C bus + * + * This function will generate a stop condition on the I2C bus + * + * \param[in] i2c_m_async_descriptor An i2c descriptor which is used to communicate through I2C + * + * \return Operation status + * \retval 0 Operation executed successfully + * \retval <0 Operation failed + */ +int32_t _i2c_m_async_send_stop(struct _i2c_m_async_device *const i2c_dev); + +/** + * \brief Returns the number of bytes left or not used in the I2C message buffer + * + * This function will return the number of bytes left (not written to the bus) or still free + * (not received from the bus) in the message buffer, depending on direction of transmission. + * + * \param[in] i2c_m_async_descriptor An i2c descriptor which is used to communicate through I2C + * + * \return Number of bytes or error code + * \retval >0 Positive number indicating bytes left + * \retval 0 Buffer is full/empty depending on direction + * \retval <0 Error code + */ +int32_t _i2c_m_async_get_bytes_left(struct _i2c_m_async_device *const i2c_dev); + +/** + * \brief Enable/disable I2C master interrupt + * + * param[in] device The pointer to I2C master device instance + * param[in] type The type of interrupt to disable/enable if applicable + * param[in] state Enable or disable + */ +void _i2c_m_async_set_irq_state(struct _i2c_m_async_device *const device, const enum _i2c_m_async_callback_type type, + const bool state); + +#ifdef __cplusplus +} +#endif + +#endif |