usart.h

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/*****************************************************************************
 *   Copyright(C)2009-2022 by VSF Team                                       *
 *                                                                           *
 *  Licensed under the Apache License, Version 2.0 (the "License");          *
 *  you may not use this file except in compliance with the License.         *
 *  You may obtain a copy of the License at                                  *
 *                                                                           *
 *     http://www.apache.org/licenses/LICENSE-2.0                            *
 *                                                                           *
 *  Unless required by applicable law or agreed to in writing, software      *
 *  distributed under the License is distributed on an "AS IS" BASIS,        *
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
 *  See the License for the specific language governing permissions and      *
 *  limitations under the License.                                           *
 *                                                                           *
 ****************************************************************************/
 
#ifndef __HAL_DRIVER_${SERIES/USART_IP}_USART_H__
#define __HAL_DRIVER_${SERIES/USART_IP}_USART_H__
 
/*============================ INCLUDES ======================================*/
 
#include "hal/vsf_hal_cfg.h"
 
#if VSF_HAL_USE_USART == ENABLED
 
// HW/IPCore
#include "hal/driver/common/template/vsf_template_hal_driver.h"
// HW/IPCore end
 
/*\note Refer to template/README.md for usage cases.
 *      For peripheral drivers, blackbox mode is recommended but not required, reimplementation part MUST be open.
 *      For IPCore drivers, class structure, MULTI_CLASS configuration, reimplementation and class APIs should be open to user.
 *      For emulated drivers, **** No reimplementation ****.
 */
 
/*\note Includes CAN ONLY be put here. */
/*\note If current header is for a peripheral driver(hw driver), and inherit from an IPCore driver, include IPCore header here. */
 
// IPCore
#if     defined(__VSF_HAL_${USART_IP}_USART_CLASS_IMPLEMENT)
#   define __VSF_CLASS_IMPLEMENT__
#elif   defined(__VSF_HAL_${USART_IP}_USART_CLASS_INHERIT__)
#   define __VSF_CLASS_INHERIT__
#endif
 
#include "utilities/ooc_class.h"
// IPCore end
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*============================ MACROS ========================================*/
 
/*\note VSF_${USART_IP}_USART_CFG_MULTI_CLASS should be implemented for IP drives and open to user,
 *          while VSF_HW_USART_CFG_MULTI_CLASS should be in usart.c.
 */
 
// IPCore
#ifndef VSF_${USART_IP}_USART_CFG_MULTI_CLASS
#   define VSF_${USART_IP}_USART_CFG_MULTI_CLASS    VSF_USART_CFG_MULTI_CLASS
#endif
// IPCore end
 
// HW
/*\note hw USART driver can reimplement following types:
 *      To enable reimplementation, please enable macro below:
 *          VSF_USART_CFG_REIMPLEMENT_TYPE_MODE for vsf_usart_mode_t
 *          VSF_USART_CFG_REIMPLEMENT_TYPE_STATUS for vsf_usart_status_t
 *          VSF_USART_CFG_REIMPLEMENT_TYPE_IRQ_MASK for vsf_usart_irq_mask_t
 *          VSF_USART_CFG_REIMPLEMENT_TYPE_CTRL for vsf_usart_ctrl_t
 *          VSF_USART_CFG_REIMPLEMENT_TYPE_CFG for vsf_usart_cfg_t
 *          VSF_USART_CFG_REIMPLEMENT_TYPE_CAPABILITY for vsf_usart_capability_t
 *      Reimplementation is used for optimization hw/IPCore drivers, reimplement the bit mask according to hw registers.
 *      *** DO NOT reimplement these in emulated drivers. ***
 */
 
#define VSF_USART_CFG_REIMPLEMENT_TYPE_MODE         ENABLED
#define VSF_USART_CFG_REIMPLEMENT_TYPE_STATUS       ENABLED
#define VSF_USART_CFG_REIMPLEMENT_TYPE_IRQ_MASK     ENABLED
#define VSF_USART_CFG_REIMPLEMENT_TYPE_CTRL         ENABLED
#define VSF_USART_CFG_REIMPLEMENT_TYPE_CFG          ENABLED
#define VSF_USART_CFG_REIMPLEMENT_TYPE_CAPABILITY   ENABLED
// HW end
 
// TODO: add comments about fifo2req
 
/*============================ TYPES =========================================*/
 
// IPCore
vsf_class(vsf_${usart_ip}_usart_t) {
#if VSF_${USART_IP}_CFG_MULTI_CLASS == ENABLED
    public_member(
        vsf_usart_t                 vsf_usart;
    )
#endif
 
/*\note You can add more member in vsf_${usart_ip}_usart_t instance.
 *      For members accessible from child, put in protected_member.
 *      Else, put in private_member.
 */
 
    protected_member(
        vsf_${usart_ip}_iwc_reg_t  *reg;
        vsf_usart_isr_t             isr;
    )
};
// IPCore end
 
// HW/IPCore, not for emulated drivers
#if VSF_USART_CFG_REIMPLEMENT_TYPE_MODE == ENABLED
typedef enum vsf_usart_mode_t {
    VSF_USART_NO_PARITY                 = (0x0ul << 0),
    VSF_USART_EVEN_PARITY               = (0x1ul << 0),
    VSF_USART_ODD_PARITY                = (0x2ul << 0),
    VSF_USART_FORCE_0_PARITY            = (0x3ul << 0),
    VSF_USART_FORCE_1_PARITY            = (0x4ul << 0),
 
    VSF_USART_1_STOPBIT                 = (0x0ul << 3),
    VSF_USART_1_5_STOPBIT               = (0x1ul << 3),
    VSF_USART_0_5_STOPBIT               = (0x2ul << 3),
    VSF_USART_2_STOPBIT                 = (0x3ul << 3),
 
    VSF_USART_5_BIT_LENGTH              = (0x0ul << 5),
    VSF_USART_6_BIT_LENGTH              = (0x1ul << 5),
    VSF_USART_7_BIT_LENGTH              = (0x2ul << 5),
    VSF_USART_8_BIT_LENGTH              = (0x3ul << 5),
    VSF_USART_9_BIT_LENGTH              = (0x4ul << 5),
    VSF_USART_10_BIT_LENGTH             = (0x5ul << 5),
 
    VSF_USART_NO_HWCONTROL              = (0x0ul << 8),
    VSF_USART_RTS_HWCONTROL             = (0x1ul << 8),
    VSF_USART_CTS_HWCONTROL             = (0x2ul << 8),
    VSF_USART_RTS_CTS_HWCONTROL         = (0x3ul << 8),
 
    VSF_USART_TX_ENABLE                 = (0x0ul << 9),
    VSF_USART_TX_DISABLE                = (0x1ul << 9),
 
    VSF_USART_RX_ENABLE                 = (0x0ul << 10),
    VSF_USART_RX_DISABLE                = (0x1ul << 10),
 
    VSF_USART_SYNC_CLOCK_ENABLE         = (0x0ul << 11),
    VSF_USART_SYNC_CLOCK_DISABLE        = (0x1ul << 11),
 
    VSF_USART_HALF_DUPLEX_DISABLE       = (0x0ul << 12),
    VSF_USART_HALF_DUPLEX_ENABLE        = (0x1ul << 12),
 
    VSF_USART_TX_FIFO_THRESHOLD_EMPTY   = (0x0ul << 13),
    VSF_USART_TX_FIFO_THRESHOLD_HALF_EMPTY
                                        = (0x1ul << 13),
    VSF_USART_TX_FIFO_THRESHOLD_NOT_FULL
                                        = (0x2ul << 15),
 
    VSF_USART_RX_FIFO_THRESHOLD_NOT_EMPTY
                                        = (0x0ul << 15),
    VSF_USART_RX_FIFO_THRESHOLD_HALF_FULL
                                        = (0x1ul << 15),
    VSF_USART_RX_FIFO_THRESHOLD_FULL    = (0x2ul << 15),
 
    VSF_USART_SYNC_CLOCK_POLARITY_LOW   = (0x0ul << 16),
    VSF_USART_SYNC_CLOCK_POLARITY_HIGH  = (0x1ul << 16),
    VSF_USART_SYNC_CLOCK_PHASE_1_EDGE   = (0x0ul << 17),
    VSF_USART_SYNC_CLOCK_PHASE_2_EDGE   = (0x1ul << 17),
 
    // more vendor specified modes can be added here
} vsf_usart_mode_t;
#endif
 
#if VSF_USART_CFG_REIMPLEMENT_TYPE_IRQ_MASK == ENABLED
typedef enum vsf_usart_irq_mask_t {
    // request_rx/request_tx complete
    VSF_USART_IRQ_MASK_TX_CPL           = (0x1ul << 0),
    VSF_USART_IRQ_MASK_RX_CPL           = (0x1ul << 1),
 
    // TX/RX reach fifo threshold, threshold on some devices is bound to 1
    VSF_USART_IRQ_MASK_TX               = (0x1ul << 2),
    VSF_USART_IRQ_MASK_RX               = (0x1ul << 3),
    VSF_USART_IRQ_MASK_RX_TIMEOUT       = (0x1ul << 4),
 
    // clear to send interrupt
    VSF_USART_IRQ_MASK_CTS              = (0x1ul << 5),
 
    // Error interrupt
    VSF_USART_IRQ_MASK_FRAME_ERR        = (0x1ul << 6),
    VSF_USART_IRQ_MASK_PARITY_ERR       = (0x1ul << 7),
    VSF_USART_IRQ_MASK_BREAK_ERR        = (0x1ul << 8),
    VSF_USART_IRQ_MASK_RX_OVERFLOW_ERR  = (0x1ul << 9),
 
    // only include VSF_USART_IRQ_MASK_TX_OVERFLOW_ERR if hardware supports TX_OVERFLOW_ERR interrupt
    //VSF_USART_IRQ_MASK_TX_OVERFLOW_ERR  = (0x1ul << 10),
    //#define VSF_USART_IRQ_MASK_TX_OVERFLOW_ERR VSF_USART_IRQ_MASK_TX_OVERFLOW_ERR
 
    // only include VSF_USART_IRQ_MASK_TX_IDLE if hardware supports TX_IDLE interrupt
    //VSF_USART_IRQ_MASK_TX_IDLE          = (0x1ul << 11),
    //#define VSF_USART_IRQ_MASK_TX_IDLE      VSF_USART_IRQ_MASK_TX_IDLE
 
    // only include VSF_USART_IRQ_MASK_RX_IDLE if hardware supports configurable RX_IDLE count and RX_IDLE interrupt
    // or VSF_USART_IRQ_MASK_RX_IDLE will be mapped to VSF_USART_IRQ_MASK_RX_TIMEOUT
    //VSF_USART_IRQ_MASK_RX_IDLE          = (0x1ul << 12),
    //#define VSF_USART_IRQ_MASK_RX_IDLE      VSF_USART_IRQ_MASK_RX_IDLE
 
    // more vendor specified irq_masks can be added here
} vsf_usart_irq_mask_t;
#endif
 
#if VSF_USART_CFG_REIMPLEMENT_TYPE_CTRL == ENABLED
// By default, the template contains two control commands:
// - send BREAK signal (self-clearing)
// - set and clear BREAK signal
// The driver needs to select and implement according to the hardware support situation.
typedef enum vsf_usart_ctrl_t {
    // usart default command
    VSF_USART_CTRL_SEND_BREAK           = (0x01ul << 0),
    #define VSF_USART_CTRL_SEND_BREAK VSF_USART_CTRL_SEND_BREAK
 
    VSF_USART_CTRL_SET_BREAK            = (0x01ul << 1),
    #define VSF_USART_CTRL_SET_BREAK VSF_USART_CTRL_SET_BREAK
    VSF_USART_CTRL_CLEAR_BREAK          = (0x01ul << 2),
    #define VSF_USART_CTRL_CLEAR_BREAK VSF_USART_CTRL_CLEAR_BREAK
 
    // more vendor specified command can be added here
} vsf_usart_ctrl_t;
#endif
 
#if VSF_USART_CFG_REIMPLEMENT_TYPE_STATUS == ENABLED
typedef struct vsf_usart_status_t {
    union {
        inherit(vsf_peripheral_status_t)
        uint32_t value;
        struct {
            uint32_t is_busy         : 1;
            uint32_t is_tx_busy      : 1;
            uint32_t is_rx_busy      : 1;
            uint32_t tx_fifo_thresh  : 8;
            uint32_t rx_fifo_thresh  : 8;
        };
    };
} vsf_usart_status_t;
#endif
 
#if VSF_USART_CFG_REIMPLEMENT_TYPE_CFG == ENABLED
typedef struct vsf_usart_t vsf_usart_t;
typedef void vsf_usart_isr_handler_t(void *target_ptr,
                                     vsf_usart_t *usart_ptr,
                                     vsf_usart_irq_mask_t irq_mask);
typedef struct vsf_usart_isr_t {
    vsf_usart_isr_handler_t *handler_fn;
    void                    *target_ptr;
    vsf_arch_prio_t         prio;
} vsf_usart_isr_t;
typedef struct vsf_usart_cfg_t {
    uint32_t                mode;
    uint32_t                baudrate;
    uint32_t                rx_timeout;
#   ifdef VSF_USART_IRQ_MASK_RX_IDLE
    uint32_t                rx_idle_cnt;
#   endif
    vsf_usart_isr_t         isr;
 
    // more vendor specified cfg can be added here
} vsf_usart_cfg_t;
#endif
 
#if VSF_USART_CFG_REIMPLEMENT_TYPE_CAPABILITY == ENABLED
typedef struct vsf_usart_capability_t {
    vsf_usart_irq_mask_t irq_mask;
 
    uint32_t max_baudrate;
    uint32_t min_baudrate;
 
    uint8_t txfifo_depth;
    uint8_t rxfifo_depth;
 
    uint8_t max_data_bits;
    uint8_t min_data_bits;
 
    uint8_t support_rx_timeout          : 1;
    uint8_t support_send_break          : 1;
    uint8_t support_set_and_clear_break : 1;
    uint8_t support_sync_clock          : 1;
#   ifdef VSF_USART_IRQ_MASK_TX_IDLE
    uint8_t support_tx_idle             : 1;
#   endif
#   ifdef VSF_USART_IRQ_MASK_RX_IDLE
    uint8_t support_rx_idle             : 1;
#   endif
 
    // more vendor specified capability can be added here
} vsf_usart_capability_t;
#endif
// HW/IPCore end
 
/*============================ GLOBAL VARIABLES ==============================*/
/*============================ PROTOTYPES ====================================*/
 
// IPCore
/*\note Extern APIs for ip core diriver.
 *      There is no requirement about how APIs of IPCore drivers should be implemented.
 *      Just consider the simplicity for actual peripheral drivers.
 */
// IPCore end
 
#ifdef __cplusplus
}
#endif
 
// IPCore
#undef __VSF_HAL_${USART_IP}_USART_CLASS_IMPLEMENT
#undef __VSF_HAL_${USART_IP}_USART_CLASS_INHERIT__
// IPCore end
 
#endif      // VSF_HAL_USE_USART
#endif      // __HAL_DRIVER_${SERIES/USART_IP}_USART_H__
/* EOF */