346 lines
13 KiB
C
346 lines
13 KiB
C
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// am_hal_uart.h
|
||
|
|
//! @file
|
||
|
|
//!
|
||
|
|
//! @brief Functions for accessing and configuring the UART.
|
||
|
|
//!
|
||
|
|
//! @addtogroup uart2 UART
|
||
|
|
//! @ingroup apollo2hal
|
||
|
|
//! @{
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Copyright (c) 2017, Ambiq Micro
|
||
|
|
// All rights reserved.
|
||
|
|
//
|
||
|
|
// Redistribution and use in source and binary forms, with or without
|
||
|
|
// modification, are permitted provided that the following conditions are met:
|
||
|
|
//
|
||
|
|
// 1. Redistributions of source code must retain the above copyright notice,
|
||
|
|
// this list of conditions and the following disclaimer.
|
||
|
|
//
|
||
|
|
// 2. 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.
|
||
|
|
//
|
||
|
|
// 3. Neither the name of the copyright holder 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.
|
||
|
|
//
|
||
|
|
// This is part of revision 1.2.9 of the AmbiqSuite Development Package.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
#ifndef AM_HAL_UART_H
|
||
|
|
#define AM_HAL_UART_H
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C"
|
||
|
|
{
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @name UART Interrupts
|
||
|
|
//! @brief Macro definitions for UART FIFO levels.
|
||
|
|
//!
|
||
|
|
//! They may be used with the \e am_hal_uart_fifo_config() function.
|
||
|
|
//!
|
||
|
|
//! @{
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
#define AM_HAL_UART_INT_OVER_RUN AM_REG_UART_IER_OEIM_M
|
||
|
|
#define AM_HAL_UART_INT_BREAK_ERR AM_REG_UART_IER_BEIM_M
|
||
|
|
#define AM_HAL_UART_INT_PARITY_ERR AM_REG_UART_IER_PEIM_M
|
||
|
|
#define AM_HAL_UART_INT_FRAME_ERR AM_REG_UART_IER_FEIM_M
|
||
|
|
#define AM_HAL_UART_INT_RX_TMOUT AM_REG_UART_IER_RTIM_M
|
||
|
|
#define AM_HAL_UART_INT_TX AM_REG_UART_IER_TXIM_M
|
||
|
|
#define AM_HAL_UART_INT_RX AM_REG_UART_IER_RXIM_M
|
||
|
|
#define AM_HAL_UART_INT_DSRM AM_REG_UART_IER_DSRMIM_M
|
||
|
|
#define AM_HAL_UART_INT_DCDM AM_REG_UART_IER_DCDMIM_M
|
||
|
|
#define AM_HAL_UART_INT_CTSM AM_REG_UART_IER_CTSMIM_M
|
||
|
|
#define AM_HAL_UART_INT_TXCMP AM_REG_UART_IER_TXCMPMIM_M
|
||
|
|
//! @}
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @name UART FIFO Levels
|
||
|
|
//! @brief Macro definitions for RTV interrupt status bits.
|
||
|
|
//!
|
||
|
|
//! These macros correspond to the bits in the UART interrupt status register.
|
||
|
|
//! They may be used with any of the \e am_hal_uart_int_x() functions.
|
||
|
|
//!
|
||
|
|
//! @{
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
//TX
|
||
|
|
#define AM_HAL_UART_TX_FIFO_1_8 AM_REG_UART_IFLS_TXIFLSEL(0)
|
||
|
|
#define AM_HAL_UART_TX_FIFO_1_4 AM_REG_UART_IFLS_TXIFLSEL(1)
|
||
|
|
#define AM_HAL_UART_TX_FIFO_1_2 AM_REG_UART_IFLS_TXIFLSEL(2)
|
||
|
|
#define AM_HAL_UART_TX_FIFO_3_4 AM_REG_UART_IFLS_TXIFLSEL(3)
|
||
|
|
#define AM_HAL_UART_TX_FIFO_7_8 AM_REG_UART_IFLS_TXIFLSEL(4)
|
||
|
|
// RX
|
||
|
|
#define AM_HAL_UART_RX_FIFO_1_8 AM_REG_UART_IFLS_RXIFLSEL(0)
|
||
|
|
#define AM_HAL_UART_RX_FIFO_1_4 AM_REG_UART_IFLS_RXIFLSEL(1)
|
||
|
|
#define AM_HAL_UART_RX_FIFO_1_2 AM_REG_UART_IFLS_RXIFLSEL(2)
|
||
|
|
#define AM_HAL_UART_RX_FIFO_3_4 AM_REG_UART_IFLS_RXIFLSEL(3)
|
||
|
|
#define AM_HAL_UART_RX_FIFO_7_8 AM_REG_UART_IFLS_RXIFLSEL(4)
|
||
|
|
//! @}
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @name UART Status Register
|
||
|
|
//! @brief Macro definitions for UART Status Register Bits.
|
||
|
|
//!
|
||
|
|
//! They may be used with the \e am_hal_uart_status_get() function.
|
||
|
|
//!
|
||
|
|
//! @{
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
// This is the overrun error indicator.
|
||
|
|
#define AM_HAL_UART_RSR_OVERRUN_NOERR AM_REG_UART_RSR_OESTAT_NOERR
|
||
|
|
#define AM_HAL_UART_RSR_OVERRUN_ERROR AM_REG_UART_RSR_OESTAT_ERR
|
||
|
|
|
||
|
|
// This is the break error indicator.
|
||
|
|
#define AM_HAL_UART_RSR_BREAK_NOERR AM_REG_UART_RSR_BESTAT_NOERR
|
||
|
|
#define AM_HAL_UART_RSR_BREAK_ERROR AM_REG_UART_RSR_BESTAT_ERR
|
||
|
|
|
||
|
|
// This is the parity error indicator.
|
||
|
|
#define AM_HAL_UART_RSR_PARITY_NOERR AM_REG_UART_RSR_PESTAT_NOERR
|
||
|
|
#define AM_HAL_UART_RSR_PARITY_ERROR AM_REG_UART_RSR_PESTAT_ERR
|
||
|
|
|
||
|
|
// This is the framing error indicator.
|
||
|
|
#define AM_HAL_UART_RSR_FRAME_ERROR_NOERR AM_REG_UART_RSR_FESTAT_NOERR
|
||
|
|
#define AM_HAL_UART_RSR_FRAME_ERROR_ERROR AM_REG_UART_RSR_FESTAT_ERR
|
||
|
|
//! @}
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @name UART Flag Register
|
||
|
|
//! @brief Macro definitions for UART Flag Register Bits.
|
||
|
|
//!
|
||
|
|
//! They may be used with the \e am_hal_uart_flags_get() function.
|
||
|
|
//!
|
||
|
|
//! @{
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
#define AM_HAL_UART_FR_RING AM_REG_UART_FR_RI_M
|
||
|
|
#define AM_HAL_UART_FR_TX_EMPTY AM_REG_UART_FR_TXFE_XMTFIFO_EMPTY
|
||
|
|
#define AM_HAL_UART_FR_RX_FULL AM_REG_UART_FR_RXFF_RCVFIFO_FULL
|
||
|
|
#define AM_HAL_UART_FR_TX_FULL AM_REG_UART_FR_TXFF_XMTFIFO_FULL
|
||
|
|
#define AM_HAL_UART_FR_RX_EMPTY AM_REG_UART_FR_RXFE_RCVFIFO_EMPTY
|
||
|
|
#define AM_HAL_UART_FR_BUSY AM_REG_UART_FR_BUSY_BUSY
|
||
|
|
#define AM_HAL_UART_FR_DCD_DETECTED AM_REG_UART_FR_DCD_DETECTED
|
||
|
|
#define AM_HAL_UART_FR_DSR_READY AM_REG_UART_FR_DSR_READY
|
||
|
|
#define AM_HAL_UART_FR_CTS AM_REG_UART_FR_CTS_M
|
||
|
|
//! @}
|
||
|
|
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! @name UART Config Macros
|
||
|
|
//! @brief Macro definitions for available Data bits.
|
||
|
|
//!
|
||
|
|
//! They may be used with the \e am_hal_uart_config_t structure used by \e
|
||
|
|
//! am_hal_uart_config().
|
||
|
|
//!
|
||
|
|
//! @{
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Data bits defines.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
#define AM_HAL_UART_DATA_BITS_8 AM_REG_UART_LCRH_WLEN(3)
|
||
|
|
#define AM_HAL_UART_DATA_BITS_7 AM_REG_UART_LCRH_WLEN(2)
|
||
|
|
#define AM_HAL_UART_DATA_BITS_6 AM_REG_UART_LCRH_WLEN(1)
|
||
|
|
#define AM_HAL_UART_DATA_BITS_5 0
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Parity defines.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
#define AM_HAL_UART_PARITY_NONE 0
|
||
|
|
#define AM_HAL_UART_PARITY_ODD AM_REG_UART_LCRH_PEN_M
|
||
|
|
#define AM_HAL_UART_PARITY_EVEN AM_REG_UART_LCRH_PEN_M | \
|
||
|
|
AM_REG_UART_LCRH_EPS_M
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Flow control defines.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
#define AM_HAL_UART_FLOW_CTRL_NONE 0
|
||
|
|
#define AM_HAL_UART_FLOW_CTRL_RTS_CTS AM_REG_UART_CR_CTSEN_M | \
|
||
|
|
AM_REG_UART_CR_RTSEN_M
|
||
|
|
//! @}
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
//! UART configuration structure
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
//
|
||
|
|
//! Desired Baudrate for the UART.
|
||
|
|
//
|
||
|
|
uint32_t ui32BaudRate;
|
||
|
|
|
||
|
|
//
|
||
|
|
//! Number of data bits.
|
||
|
|
//!
|
||
|
|
//! Valid values for ui32DataBits are:
|
||
|
|
//!
|
||
|
|
//! AM_HAL_UART_DATA_BITS_8
|
||
|
|
//! AM_HAL_UART_DATA_BITS_7
|
||
|
|
//! AM_HAL_UART_DATA_BITS_6
|
||
|
|
//! AM_HAL_UART_DATA_BITS_5
|
||
|
|
//
|
||
|
|
uint32_t ui32DataBits;
|
||
|
|
|
||
|
|
//
|
||
|
|
//! Use two stop bits.
|
||
|
|
//
|
||
|
|
bool bTwoStopBits;
|
||
|
|
|
||
|
|
//
|
||
|
|
//! Parity.
|
||
|
|
//!
|
||
|
|
//! Valid values for ui32Parity are:
|
||
|
|
//!
|
||
|
|
//! AM_HAL_UART_PARITY_NONE
|
||
|
|
//! AM_HAL_UART_PARITY_ODD
|
||
|
|
//! AM_HAL_UART_PARITY_EVEN
|
||
|
|
//
|
||
|
|
uint32_t ui32Parity;
|
||
|
|
|
||
|
|
//
|
||
|
|
//! Flow control.
|
||
|
|
//!
|
||
|
|
//! Valid values for ui32FlowCtrl are:
|
||
|
|
//!
|
||
|
|
//! AM_HAL_UART_FLOW_CTRL_NONE
|
||
|
|
//! AM_HAL_UART_FLOW_CTRL_RTS_CTS
|
||
|
|
//
|
||
|
|
uint32_t ui32FlowCtrl;
|
||
|
|
}
|
||
|
|
am_hal_uart_config_t;
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Structure for containing information about the UART's configuration while
|
||
|
|
// it is powered down.
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
uint32_t ILPR;
|
||
|
|
uint32_t IBRD;
|
||
|
|
uint32_t FBRD;
|
||
|
|
uint32_t LCRH;
|
||
|
|
uint32_t CR;
|
||
|
|
uint32_t IFLS;
|
||
|
|
uint32_t IER;
|
||
|
|
uint32_t UARTEN;
|
||
|
|
uint32_t bValid;
|
||
|
|
}
|
||
|
|
am_hal_uart_pwrsave_t;
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// Global Variables
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
extern am_hal_uart_pwrsave_t am_hal_uart_pwrsave[AM_REG_UART_NUM_MODULES];
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// External function definitions
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|
||
|
|
extern void am_hal_uart_pwrctrl_enable(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_pwrctrl_disable(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_power_on_restore(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_power_off_save(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_config(uint32_t ui32Module,
|
||
|
|
am_hal_uart_config_t *psConfig);
|
||
|
|
extern uint32_t am_hal_uart_status_get(uint32_t ui32Module);
|
||
|
|
extern uint32_t am_hal_uart_int_status_get(uint32_t ui32Module,
|
||
|
|
bool bEnabledOnly);
|
||
|
|
extern void am_hal_uart_int_clear(uint32_t ui32Module,
|
||
|
|
uint32_t ui32Interrupt);
|
||
|
|
extern void am_hal_uart_int_disable(uint32_t ui32Module,
|
||
|
|
uint32_t ui32Interrupt);
|
||
|
|
extern void am_hal_uart_int_enable(uint32_t ui32Module,
|
||
|
|
uint32_t ui32Interrupt);
|
||
|
|
extern uint32_t am_hal_uart_int_enable_get(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_enable(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_disable(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_clock_enable(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_clock_disable(uint32_t ui32Module);
|
||
|
|
extern void am_hal_uart_fifo_config(uint32_t ui32Module, uint32_t ui32LvlCfg);
|
||
|
|
extern uint32_t am_hal_uart_flags_get(uint32_t ui32Module);
|
||
|
|
|
||
|
|
// rx/tx polled
|
||
|
|
extern void am_hal_uart_char_transmit_polled(uint32_t ui32Module,
|
||
|
|
char cChar);
|
||
|
|
extern void am_hal_uart_string_transmit_polled(uint32_t ui32Module,
|
||
|
|
char *pcString);
|
||
|
|
extern void am_hal_uart_char_receive_polled(uint32_t ui32Module,
|
||
|
|
char *pcChar);
|
||
|
|
extern void am_hal_uart_line_receive_polled(uint32_t ui32Module,
|
||
|
|
uint32_t ui32MaxChars,
|
||
|
|
char *pcChar);
|
||
|
|
|
||
|
|
// rx/tx buffered
|
||
|
|
extern void am_hal_uart_init_buffered(uint32_t ui32Module,
|
||
|
|
uint8_t *pui8RxArray,
|
||
|
|
uint32_t ui32RxSize,
|
||
|
|
uint8_t *pui8TxArray,
|
||
|
|
uint32_t ui32TxSize);
|
||
|
|
extern void am_hal_uart_get_status_buffered(uint32_t ui32Module,
|
||
|
|
uint32_t *pui32RxSize,
|
||
|
|
uint32_t *pui32TxSize);
|
||
|
|
extern void am_hal_uart_service_buffered(uint32_t ui32Module,
|
||
|
|
uint32_t ui32Status);
|
||
|
|
|
||
|
|
extern void am_hal_uart_service_buffered_timeout_save(uint32_t ui32Module,
|
||
|
|
uint32_t ui32Status);
|
||
|
|
extern void am_hal_uart_char_transmit_buffered(uint32_t ui32Module,
|
||
|
|
char cChar);
|
||
|
|
extern void am_hal_uart_string_transmit_buffered(uint32_t ui32Module,
|
||
|
|
char *pcString);
|
||
|
|
extern uint32_t am_hal_uart_char_receive_buffered(uint32_t ui32Module,
|
||
|
|
char *pcString,
|
||
|
|
uint32_t ui32MaxChars);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // AM_HAL_UART_H
|
||
|
|
|
||
|
|
//*****************************************************************************
|
||
|
|
//
|
||
|
|
// End Doxygen group.
|
||
|
|
//! @}
|
||
|
|
//
|
||
|
|
//*****************************************************************************
|