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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-12-09 onelife Initial creation for EFM32
*/
#ifndef __DRV_LEUSART_H__
#define __DRV_LEUSART_H__
/* Includes ------------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
struct efm32_leuart_int_mode_t
{
rt_uint8_t *data_ptr;
rt_uint8_t data_size;
rt_uint32_t read_index, save_index;
};
struct efm32_leuart_dma_mode_t
{
/* DMA Channel */
rt_uint32_t dma_channel;
/* buffer info */
rt_uint32_t *data_ptr;
rt_uint8_t data_size;
};
struct efm32_leuart_device_t
{
/* Counter */
rt_uint32_t counter;
/* Lock */
struct rt_semaphore *lock;
/* Unit number */
rt_uint8_t unit;
/* State */
volatile rt_uint8_t state;
/* Pointer to LEUART device structure */
LEUART_TypeDef *leuart_device;
/* Pointer to RX structure */
void *rx_mode;
/* Pointer to TX structure */
void *tx_mode;
};
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
#define LEUART_WAIT_TIME_TX (RT_TICK_PER_SECOND / 100 * 3)
#define LEUART_STATE_CONSOLE (1 << 0)
#define LEUART_STATE_SYNC (1 << 1)
#define LEUART_STATE_MASTER (1 << 2)
#define LEUART_STATE_AUTOCS (1 << 3)
#define LEUART_STATE_TX_BUSY (1 << 4)
#define LEUART_STATE_RX_BUSY (1 << 5)
/* Exported functions ------------------------------------------------------- */
void rt_hw_leuart_init(void);
#endif /* __DRV_LEUSART_H__ */
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