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rt-thread-official/bsp/gd32350r-eval/Libraries/GD32F3x0_standard_peripheral/Source/gd32f3x0_usart.c

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/*!
\file gd32f3x0_usart.c
\brief USART driver
\version 2017-06-06 V1.0.0, firmware for GD32F3x0
\version 2019-06-01, V2.0.0, firmware for GD32F3x0
*/
/*
Copyright (c) 2019, GigaDevice Semiconductor Inc.
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.
*/
#include "gd32f3x0_usart.h"
/* USART register bit offset */
#define CTL1_ADDR_OFFSET ((uint32_t)24U) /* bit offset of ADDR in USART_CTL1 */
#define GP_GUAT_OFFSET ((uint32_t)8U) /* bit offset of GUAT in USART_GP */
#define CTL2_SCRTNUM_OFFSET ((uint32_t)17U) /* bit offset of SCRTNUM in USART_CTL2 */
#define RT_BL_OFFSET ((uint32_t)24U) /* bit offset of BL in USART_RT */
#define CTL0_DEA_OFFSET ((uint32_t)21U) /* bit offset of DEA in USART_CTL0 */
#define CTL0_DED_OFFSET ((uint32_t)16U) /* bit offset of DED in USART_CTL0 */
/*!
\brief reset USART
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_deinit(uint32_t usart_periph)
{
switch(usart_periph){
case USART0:
/* reset USART0 */
rcu_periph_reset_enable(RCU_USART0RST);
rcu_periph_reset_disable(RCU_USART0RST);
break;
case USART1:
/* reset USART1 */
rcu_periph_reset_enable(RCU_USART1RST);
rcu_periph_reset_disable(RCU_USART1RST);
break;
default:
break;
}
}
/*!
\brief configure USART baud rate value
\param[in] usart_periph: USARTx(x=0,1)
\param[in] baudval: baud rate value
\param[out] none
\retval none
*/
void usart_baudrate_set(uint32_t usart_periph, uint32_t baudval)
{
uint32_t uclk = 0U, intdiv = 0U, fradiv = 0U, udiv = 0U;
switch(usart_periph){
/* get clock frequency */
case USART0:
/* get USART0 clock */
uclk = rcu_clock_freq_get(CK_USART);
break;
case USART1:
/* get USART1 clock */
uclk = rcu_clock_freq_get(CK_APB1);
break;
default:
break;
}
if(USART_CTL0(usart_periph) & USART_CTL0_OVSMOD){
/* oversampling by 8, configure the value of USART_BAUD */
udiv = ((2U*uclk)+baudval/2U)/baudval;
intdiv = udiv & 0x0000fff0U;
fradiv = (udiv>>1U) & 0x00000007U;
USART_BAUD(usart_periph) = ((USART_BAUD_FRADIV | USART_BAUD_INTDIV) & (intdiv | fradiv));
}else{
/* oversampling by 16, configure the value of USART_BAUD */
udiv = (uclk+baudval/2U)/baudval;
intdiv = udiv & 0x0000fff0U;
fradiv = udiv & 0x0000000fU;
USART_BAUD(usart_periph) = ((USART_BAUD_FRADIV | USART_BAUD_INTDIV) & (intdiv | fradiv));
}
}
/*!
\brief configure USART parity
\param[in] usart_periph: USARTx(x=0,1)
\param[in] paritycfg: USART parity configure
only one parameter can be selected which is shown as below:
\arg USART_PM_NONE: no parity
\arg USART_PM_ODD: odd parity
\arg USART_PM_EVEN: even parity
\param[out] none
\retval none
*/
void usart_parity_config(uint32_t usart_periph, uint32_t paritycfg)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* clear USART_CTL0 PM,PCEN bits */
USART_CTL0(usart_periph) &= ~(USART_CTL0_PM | USART_CTL0_PCEN);
/* configure USART parity mode */
USART_CTL0(usart_periph) |= paritycfg;
}
/*!
\brief configure USART word length
\param[in] usart_periph: USARTx(x=0,1)
\param[in] wlen: USART word length configure
only one parameter can be selected which is shown as below:
\arg USART_WL_8BIT: 8 bits
\arg USART_WL_9BIT: 9 bits
\param[out] none
\retval none
*/
void usart_word_length_set(uint32_t usart_periph, uint32_t wlen)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* clear USART_CTL0 WL bit */
USART_CTL0(usart_periph) &= ~USART_CTL0_WL;
/* configure USART word length */
USART_CTL0(usart_periph) |= wlen;
}
/*!
\brief configure USART stop bit length
\param[in] usart_periph: USARTx(x=0,1)
\param[in] stblen: USART stop bit configure
only one parameter can be selected which is shown as below:
\arg USART_STB_1BIT: 1 bit
\arg USART_STB_0_5BIT: 0.5bit
\arg USART_STB_2BIT: 2 bits
\arg USART_STB_1_5BIT: 1.5bit
\param[out] none
\retval none
*/
void usart_stop_bit_set(uint32_t usart_periph, uint32_t stblen)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* clear USART_CTL1 STB bits */
USART_CTL1(usart_periph) &= ~USART_CTL1_STB;
USART_CTL1(usart_periph) |= stblen;
}
/*!
\brief enable USART
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_enable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) |= USART_CTL0_UEN;
}
/*!
\brief disable USART
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_disable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
}
/*!
\brief configure USART transmitter
\param[in] usart_periph: USARTx(x=0,1)
\param[in] txconfig: enable or disable USART transmitter
only one parameter can be selected which is shown as below:
\arg USART_TRANSMIT_ENABLE: enable USART transmission
\arg USART_TRANSMIT_DISABLE: enable USART transmission
\param[out] none
\retval none
*/
void usart_transmit_config(uint32_t usart_periph, uint32_t txconfig)
{
USART_CTL0(usart_periph) &= ~USART_CTL0_TEN;
/* configure transfer mode */
USART_CTL0(usart_periph) |= txconfig;
}
/*!
\brief configure USART receiver
\param[in] usart_periph: USARTx(x=0,1)
\param[in] rxconfig: enable or disable USART receiver
only one parameter can be selected which is shown as below:
\arg USART_RECEIVE_ENABLE: enable USART reception
\arg USART_RECEIVE_DISABLE: disable USART reception
\param[out] none
\retval none
*/
void usart_receive_config(uint32_t usart_periph, uint32_t rxconfig)
{
USART_CTL0(usart_periph) &= ~USART_CTL0_REN;
/* configure receiver mode */
USART_CTL0(usart_periph) |= rxconfig;
}
/*!
\brief data is transmitted/received with the LSB/MSB first
\param[in] usart_periph: USARTx(x=0,1)
\param[in] msbf: LSB/MSB
only one parameter can be selected which is shown as below:
\arg USART_MSBF_LSB: LSB first
\arg USART_MSBF_MSB: MSB first
\param[out] none
\retval none
*/
void usart_data_first_config(uint32_t usart_periph, uint32_t msbf)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* configure LSB or MSB first */
USART_CTL1(usart_periph) &= ~(USART_CTL1_MSBF);
USART_CTL1(usart_periph) |= (USART_CTL1_MSBF & msbf);
}
/*!
\brief USART inverted configure
\param[in] usart_periph: USARTx(x=0,1)
\param[in] invertpara: refer to usart_invert_enum
only one parameter can be selected which is shown as below:
\arg USART_DINV_ENABLE: data bit level inversion
\arg USART_DINV_DISABLE: data bit level not inversion
\arg USART_TXPIN_ENABLE: TX pin level inversion
\arg USART_TXPIN_DISABLE: TX pin level not inversion
\arg USART_RXPIN_ENABLE: RX pin level inversion
\arg USART_RXPIN_DISABLE: RX pin level not inversion
\arg USART_SWAP_ENABLE: swap TX/RX pins
\arg USART_SWAP_DISABLE: not swap TX/RX pins
\param[out] none
\retval none
*/
void usart_invert_config(uint32_t usart_periph, usart_invert_enum invertpara)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* inverted or not the specified signal */
switch(invertpara){
case USART_DINV_ENABLE:
USART_CTL1(usart_periph) |= USART_CTL1_DINV;
break;
case USART_DINV_DISABLE:
USART_CTL1(usart_periph) &= ~(USART_CTL1_DINV);
break;
case USART_TXPIN_ENABLE:
USART_CTL1(usart_periph) |= USART_CTL1_TINV;
break;
case USART_TXPIN_DISABLE:
USART_CTL1(usart_periph) &= ~(USART_CTL1_TINV);
break;
case USART_RXPIN_ENABLE:
USART_CTL1(usart_periph) |= USART_CTL1_RINV;
break;
case USART_RXPIN_DISABLE:
USART_CTL1(usart_periph) &= ~(USART_CTL1_RINV);
break;
case USART_SWAP_ENABLE:
USART_CTL1(usart_periph) |= USART_CTL1_STRP;
break;
case USART_SWAP_DISABLE:
USART_CTL1(usart_periph) &= ~(USART_CTL1_STRP);
break;
default:
break;
}
}
/*!
\brief enable the USART overrun function
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_overrun_enable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* enable overrun function */
USART_CTL2(usart_periph) &= ~(USART_CTL2_OVRD);
}
/*!
\brief disable the USART overrun function
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_overrun_disable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* disable overrun function */
USART_CTL2(usart_periph) |= USART_CTL2_OVRD;
}
/*!
\brief configure the USART oversample mode
\param[in] usart_periph: USARTx(x=0,1)
\param[in] oversamp: oversample value
only one parameter can be selected which is shown as below:
\arg USART_OVSMOD_8: oversampling by 8
\arg USART_OVSMOD_16: oversampling by 16
\param[out] none
\retval none
*/
void usart_oversample_config(uint32_t usart_periph, uint32_t oversamp)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* clear OVSMOD bit */
USART_CTL0(usart_periph) &= ~(USART_CTL0_OVSMOD);
USART_CTL0(usart_periph) |= oversamp;
}
/*!
\brief configure the sample bit method
\param[in] usart_periph: USARTx(x=0,1)
\param[in] osb: sample bit
only one parameter can be selected which is shown as below:
\arg USART_OSB_1BIT: 1 bit
\arg USART_OSB_3BIT: 3 bits
\param[out] none
\retval none
*/
void usart_sample_bit_config(uint32_t usart_periph, uint32_t osb)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_OSB);
USART_CTL2(usart_periph) |= osb;
}
/*!
\brief enable receiver timeout
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_receiver_timeout_enable(uint32_t usart_periph)
{
USART_CTL1(usart_periph) |= USART_CTL1_RTEN;
}
/*!
\brief disable receiver timeout
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_receiver_timeout_disable(uint32_t usart_periph)
{
USART_CTL1(usart_periph) &= ~(USART_CTL1_RTEN);
}
/*!
\brief configure receiver timeout threshold
\param[in] usart_periph: USARTx(x=0)
\param[in] rtimeout: 0x00000000-0x00FFFFFF, receiver timeout value in terms of number of baud clocks
\param[out] none
\retval none
*/
void usart_receiver_timeout_threshold_config(uint32_t usart_periph, uint32_t rtimeout)
{
USART_RT(usart_periph) &= ~(USART_RT_RT);
USART_RT(usart_periph) |= rtimeout;
}
/*!
\brief USART transmit data function
\param[in] usart_periph: USARTx(x=0,1)
\param[in] data: data of transmission
\param[out] none
\retval none
*/
void usart_data_transmit(uint32_t usart_periph, uint32_t data)
{
USART_TDATA(usart_periph) = (USART_TDATA_TDATA & data);
}
/*!
\brief USART receive data function
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval data of received
*/
uint16_t usart_data_receive(uint32_t usart_periph)
{
return (uint16_t)(GET_BITS(USART_RDATA(usart_periph), 0U, 8U));
}
/*!
\brief enable auto baud rate detection
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_autobaud_detection_enable(uint32_t usart_periph)
{
USART_CTL1(usart_periph) |= USART_CTL1_ABDEN;
}
/*!
\brief disable auto baud rate detection
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_autobaud_detection_disable(uint32_t usart_periph)
{
USART_CTL1(usart_periph) &= ~(USART_CTL1_ABDEN);
}
/*!
\brief configure auto baud rate detection mode
\param[in] usart_periph: USARTx(x=0)
\param[in] abdmod: auto baud rate detection mode
only one parameter can be selected which is shown as below:
\arg USART_ABDM_FTOR: falling edge to rising edge measurement
\arg USART_ABDM_FTOF: falling edge to falling edge measurement
\param[out] none
\retval none
*/
void usart_autobaud_detection_mode_config(uint32_t usart_periph, uint32_t abdmod)
{
/* reset ABDM bits */
USART_CTL1(usart_periph) &= ~(USART_CTL1_ABDM);
USART_CTL1(usart_periph) |= abdmod;
}
/*!
\brief address of the USART terminal
\param[in] usart_periph: USARTx(x=0,1)
\param[in] addr: 0x00-0xFF, address of USART terminal
\param[out] none
\retval none
*/
void usart_address_config(uint32_t usart_periph, uint8_t addr)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) &= ~(USART_CTL1_ADDR);
USART_CTL1(usart_periph) |= (USART_CTL1_ADDR & (((uint32_t)addr) << CTL1_ADDR_OFFSET));
}
/*!
\brief configure the address of the USART in wake up by address match mode
\param[in] usart_periph: USARTx(x=0,1)
\param[in] addmod: address detection mode
only one parameter can be selected which is shown as below:
\arg USART_ADDM_4BIT: 4 bits
\arg USART_ADDM_FULLBIT: full bits
\param[out] none
\retval none
*/
void usart_address_detection_mode_config(uint32_t usart_periph, uint32_t addmod)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) &= ~(USART_CTL1_ADDM);
USART_CTL1(usart_periph) |= USART_CTL1_ADDM & (addmod);
}
/*!
\brief enable mute mode
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_mute_mode_enable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) |= USART_CTL0_MEN;
}
/*!
\brief disable mute mode
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_mute_mode_disable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_MEN);
}
/*!
\brief configure wakeup method in mute mode
\param[in] usart_periph: USARTx(x=0,1)
\param[in] wmethod: two methods be used to enter or exit the mute mode
only one parameter can be selected which is shown as below:
\arg USART_WM_IDLE: idle line
\arg USART_WM_ADDR: address mark
\param[out] none
\retval none
*/
void usart_mute_mode_wakeup_config(uint32_t usart_periph, uint32_t wmethod)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL0(usart_periph) &= ~(USART_CTL0_WM);
USART_CTL0(usart_periph) |= wmethod;
}
/*!
\brief enable LIN mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_lin_mode_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) |= USART_CTL1_LMEN;
}
/*!
\brief disable LIN mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_lin_mode_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) &= ~(USART_CTL1_LMEN);
}
/*!
\brief configure LIN break frame length
\param[in] usart_periph: USARTx(x=0)
\param[in] lblen: LIN break detection length
only one parameter can be selected which is shown as below:
\arg USART_LBLEN_10B: 10 bits break detection
\arg USART_LBLEN_11B: 11 bits break detection
\param[out] none
\retval none
*/
void usart_lin_break_detection_length_config(uint32_t usart_periph, uint32_t lblen)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) &= ~(USART_CTL1_LBLEN);
USART_CTL1(usart_periph) |= USART_CTL1_LBLEN & (lblen);
}
/*!
\brief enable half-duplex mode
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_halfduplex_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) |= USART_CTL2_HDEN;
}
/*!
\brief disable half-duplex mode
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_halfduplex_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_HDEN);
}
/*!
\brief enable USART clock
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_clock_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) |= USART_CTL1_CKEN;
}
/*!
\brief disable USART clock
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_clock_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL1(usart_periph) &= ~(USART_CTL1_CKEN);
}
/*!
\brief configure USART synchronous mode parameters
\param[in] usart_periph: USARTx(x=0,1)
\param[in] clen: last bit clock pulse
only one parameter can be selected which is shown as below:
\arg USART_CLEN_NONE: clock pulse of the last data bit (MSB) is not output to the CK pin
\arg USART_CLEN_EN: clock pulse of the last data bit (MSB) is output to the CK pin
\param[in] cph: clock phase
only one parameter can be selected which is shown as below:
\arg USART_CPH_1CK: first clock transition is the first data capture edge
\arg USART_CPH_2CK: second clock transition is the first data capture edge
\param[in] cpl: clock polarity
only one parameter can be selected which is shown as below:
\arg USART_CPL_LOW: steady low value on CK pin
\arg USART_CPL_HIGH: steady high value on CK pin
\param[out] none
\retval none
*/
void usart_synchronous_clock_config(uint32_t usart_periph, uint32_t clen, uint32_t cph, uint32_t cpl)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* reset USART_CTL1 CLEN,CPH,CPL bits */
USART_CTL1(usart_periph) &= ~(USART_CTL1_CLEN | USART_CTL1_CPH | USART_CTL1_CPL);
USART_CTL1(usart_periph) |= (USART_CTL1_CLEN & clen);
USART_CTL1(usart_periph) |= (USART_CTL1_CPH & cph);
USART_CTL1(usart_periph) |= (USART_CTL1_CPL & cpl);
}
/*!
\brief configure guard time value in smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[in] guat: 0x00-0xFF
\param[out] none
\retval none
*/
void usart_guard_time_config(uint32_t usart_periph, uint32_t guat)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_GP(usart_periph) &= ~(USART_GP_GUAT);
USART_GP(usart_periph) |= (USART_GP_GUAT & ((guat) << GP_GUAT_OFFSET));
}
/*!
\brief enable smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_smartcard_mode_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) |= USART_CTL2_SCEN;
}
/*!
\brief disable smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_smartcard_mode_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_SCEN);
}
/*!
\brief enable NACK in smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_smartcard_mode_nack_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) |= USART_CTL2_NKEN;
}
/*!
\brief disable NACK in smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_smartcard_mode_nack_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_NKEN);
}
/*!
\brief enable early NACK in smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_smartcard_mode_early_nack_enable(uint32_t usart_periph)
{
USART_RFCS(usart_periph) |= USART_RFCS_ELNACK;
}
/*!
\brief disable early NACK in smartcard mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_smartcard_mode_early_nack_disable(uint32_t usart_periph)
{
USART_RFCS(usart_periph) &= ~USART_RFCS_ELNACK;
}
/*!
\brief configure smartcard auto-retry number
\param[in] usart_periph: USARTx(x=0)
\param[in] scrtnum: 0x00000000-0x00000007, smartcard auto-retry number
\param[out] none
\retval none
*/
void usart_smartcard_autoretry_config(uint32_t usart_periph, uint32_t scrtnum)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_SCRTNUM);
USART_CTL2(usart_periph) |= (USART_CTL2_SCRTNUM & (scrtnum << CTL2_SCRTNUM_OFFSET));
}
/*!
\brief configure block length
\param[in] usart_periph: USARTx(x=0)
\param[in] bl: 0x00000000-0x000000FF
\param[out] none
\retval none
*/
void usart_block_length_config(uint32_t usart_periph, uint32_t bl)
{
USART_RT(usart_periph) &= ~(USART_RT_BL);
USART_RT(usart_periph) |= (USART_RT_BL & ((bl) << RT_BL_OFFSET));
}
/*!
\brief enable IrDA mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_irda_mode_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) |= USART_CTL2_IREN;
}
/*!
\brief disable IrDA mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_irda_mode_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_IREN);
}
/*!
\brief configure the peripheral clock prescaler in USART IrDA low-power or SmartCard mode
\param[in] usart_periph: USARTx(x=0)
\param[in] psc: 0x00000000-0x000000FF
\param[out] none
\retval none
*/
void usart_prescaler_config(uint32_t usart_periph, uint32_t psc)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_GP(usart_periph) &= ~(USART_GP_PSC);
USART_GP(usart_periph) |= psc;
}
/*!
\brief configure IrDA low-power
\param[in] usart_periph: USARTx(x=0)
\param[in] irlp: IrDA low-power or normal
only one parameter can be selected which is shown as below:
\arg USART_IRLP_LOW: low-power
\arg USART_IRLP_NORMAL: normal
\param[out] none
\retval none
*/
void usart_irda_lowpower_config(uint32_t usart_periph, uint32_t irlp)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_IRLP);
USART_CTL2(usart_periph) |= (USART_CTL2_IRLP & irlp);
}
/*!
\brief configure hardware flow control RTS
\param[in] usart_periph: USARTx(x=0,1)
\param[in] rtsconfig: enable or disable RTS
only one parameter can be selected which is shown as below:
\arg USART_RTS_ENABLE: enable RTS
\arg USART_RTS_DISABLE: disable RTS
\param[out] none
\retval none
*/
void usart_hardware_flow_rts_config(uint32_t usart_periph, uint32_t rtsconfig)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_RTSEN);
USART_CTL2(usart_periph) |= rtsconfig;
}
/*!
\brief configure hardware flow control CTS
\param[in] usart_periph: USARTx(x=0,1)
\param[in] ctsconfig: enable or disable CTS
only one parameter can be selected which is shown as below:
\arg USART_CTS_ENABLE: enable CTS
\arg USART_CTS_DISABLE: disable CTS
\param[out] none
\retval none
*/
void usart_hardware_flow_cts_config(uint32_t usart_periph, uint32_t ctsconfig)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~USART_CTL2_CTSEN;
USART_CTL2(usart_periph) |= ctsconfig;
}
/*!
\brief enable RS485 driver
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_rs485_driver_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) |= USART_CTL2_DEM;
}
/*!
\brief disable RS485 driver
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_rs485_driver_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_DEM);
}
/*!
\brief configure driver enable assertion time
\param[in] usart_periph: USARTx(x=0,1)
\param[in] deatime: 0x00000000-0x0000001F
\param[out] none
\retval none
*/
void usart_driver_assertime_config(uint32_t usart_periph, uint32_t deatime)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL0(usart_periph) &= ~(USART_CTL0_DEA);
USART_CTL0(usart_periph) |= (USART_CTL0_DEA & ((deatime) << CTL0_DEA_OFFSET));
}
/*!
\brief configure driver enable de-assertion time
\param[in] usart_periph: USARTx(x=0,1)
\param[in] dedtime: 0x00000000-0x0000001F
\param[out] none
\retval none
*/
void usart_driver_deassertime_config(uint32_t usart_periph, uint32_t dedtime)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL0(usart_periph) &= ~(USART_CTL0_DED);
USART_CTL0(usart_periph) |= (USART_CTL0_DED & ((dedtime) << CTL0_DED_OFFSET));
}
/*!
\brief configure driver enable polarity mode
\param[in] usart_periph: USARTx(x=0,1)
\param[in] dep: DE signal
only one parameter can be selected which is shown as below:
\arg USART_DEP_HIGH: DE signal is active high
\arg USART_DEP_LOW: DE signal is active low
\param[out] none
\retval none
*/
void usart_depolarity_config(uint32_t usart_periph, uint32_t dep)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* reset DEP bit */
USART_CTL2(usart_periph) &= ~(USART_CTL2_DEP);
USART_CTL2(usart_periph) |= (USART_CTL2_DEP & dep);
}
/*!
\brief configure USART DMA reception
\param[in] usart_periph: USARTx(x=0,1)
\param[in] dmacmd: enable or disable DMA for reception
only one parameter can be selected which is shown as below:
\arg USART_DENR_ENABLE: DMA enable for reception
\arg USART_DENR_DISABLE: DMA disable for reception
\param[out] none
\retval none
*/
void usart_dma_receive_config(uint32_t usart_periph, uint32_t dmacmd)
{
USART_CTL2(usart_periph) &= ~USART_CTL2_DENR;
/* configure DMA reception */
USART_CTL2(usart_periph) |= dmacmd;
}
/*!
\brief configure USART DMA transmission
\param[in] usart_periph: USARTx(x=0,1)
\param[in] dmacmd: enable or disable DMA for transmission
only one parameter can be selected which is shown as below:
\arg USART_DENT_ENABLE: DMA enable for transmission
\arg USART_DENT_DISABLE: DMA disable for transmission
\param[out] none
\retval none
*/
void usart_dma_transmit_config(uint32_t usart_periph, uint32_t dmacmd)
{
USART_CTL2(usart_periph) &= ~USART_CTL2_DENT;
/* configure DMA transmission */
USART_CTL2(usart_periph) |= dmacmd;
}
/*!
\brief disable DMA on reception error
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_reception_error_dma_disable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) |= USART_CTL2_DDRE;
}
/*!
\brief enable DMA on reception error
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_reception_error_dma_enable(uint32_t usart_periph)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
USART_CTL2(usart_periph) &= ~(USART_CTL2_DDRE);
}
/*!
\brief enable USART to wakeup the mcu from deep-sleep mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_wakeup_enable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) |= USART_CTL0_UESM;
}
/*!
\brief disable USART to wakeup the mcu from deep-sleep mode
\param[in] usart_periph: USARTx(x=0)
\param[out] none
\retval none
*/
void usart_wakeup_disable(uint32_t usart_periph)
{
USART_CTL0(usart_periph) &= ~(USART_CTL0_UESM);
}
/*!
\brief configure the USART wakeup mode from deep-sleep mode
\param[in] usart_periph: USARTx(x=0)
\param[in] wum: wakeup mode
only one parameter can be selected which is shown as below:
\arg USART_WUM_ADDR: WUF active on address match
\arg USART_WUM_STARTB: WUF active on start bit
\arg USART_WUM_RBNE: WUF active on RBNE
\param[out] none
\retval none
*/
void usart_wakeup_mode_config(uint32_t usart_periph, uint32_t wum)
{
/* disable USART */
USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
/* reset WUM bit */
USART_CTL2(usart_periph) &= ~(USART_CTL2_WUM);
USART_CTL2(usart_periph) |= USART_CTL2_WUM & (wum);
}
/*!
\brief enable USART command
\param[in] usart_periph: USARTx(x=0,1)
\param[in] cmdtype: command type
only one parameter can be selected which is shown as below:
\arg USART_CMD_ABDCMD: auto baudrate detection command
\arg USART_CMD_SBKCMD: send break command
\arg USART_CMD_MMCMD: mute mode command
\arg USART_CMD_RXFCMD: receive data flush command
\arg USART_CMD_TXFCMD: transmit data flush request
\param[out] none
\retval none
*/
void usart_command_enable(uint32_t usart_periph, uint32_t cmdtype)
{
USART_CMD(usart_periph) |= (cmdtype);
}
/*!
\brief enable receive FIFO
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_receive_fifo_enable(uint32_t usart_periph)
{
USART_RFCS(usart_periph) |= USART_RFCS_RFEN;
}
/*!
\brief disable receive FIFO
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval none
*/
void usart_receive_fifo_disable(uint32_t usart_periph)
{
USART_RFCS(usart_periph) &= ~(USART_RFCS_RFEN);
}
/*!
\brief read receive FIFO counter number
\param[in] usart_periph: USARTx(x=0,1)
\param[out] none
\retval receive FIFO counter number
*/
uint8_t usart_receive_fifo_counter_number(uint32_t usart_periph)
{
return (uint8_t)(GET_BITS(USART_RFCS(usart_periph), 12U, 14U));
}
/*!
\brief get flag in STAT/CHC/RFCS register
\param[in] usart_periph: USARTx(x=0,1)
\param[in] flag: flag type
only one parameter can be selected which is shown as below:
\arg USART_FLAG_PERR: parity error flag
\arg USART_FLAG_FERR: frame error flag
\arg USART_FLAG_NERR: noise error flag
\arg USART_FLAG_ORERR: overrun error
\arg USART_FLAG_IDLE: idle line detected flag
\arg USART_FLAG_RBNE: read data buffer not empty
\arg USART_FLAG_TC: transmission completed
\arg USART_FLAG_TBE: transmit data register empty
\arg USART_FLAG_LBD: LIN break detected flag
\arg USART_FLAG_CTSF: CTS change flag
\arg USART_FLAG_CTS: CTS level
\arg USART_FLAG_RT: receiver timeout flag
\arg USART_FLAG_EB: end of block flag
\arg USART_FLAG_ABDE: auto baudrate detection error
\arg USART_FLAG_ABD: auto baudrate detection flag
\arg USART_FLAG_BSY: busy flag
\arg USART_FLAG_AM: address match flag
\arg USART_FLAG_SB: send break flag
\arg USART_FLAG_RWU: receiver wakeup from mute mode.
\arg USART_FLAG_WU: wakeup from deep-sleep mode flag
\arg USART_FLAG_TEA: transmit enable acknowledge flag
\arg USART_FLAG_REA: receive enable acknowledge flag
\arg USART_FLAG_EPERR: early parity error flag
\arg USART_FLAG_RFE: receive FIFO empty flag
\arg USART_FLAG_RFF: receive FIFO full flag
\param[out] none
\retval FlagStatus: SET or RESET
*/
FlagStatus usart_flag_get(uint32_t usart_periph, usart_flag_enum flag)
{
if(RESET != (USART_REG_VAL(usart_periph, flag) & BIT(USART_BIT_POS(flag)))){
return SET;
}else{
return RESET;
}
}
/*!
\brief clear USART status
\param[in] usart_periph: USARTx(x=0,1)
\param[in] flag: flag type
only one parameter can be selected which is shown as below:
\arg USART_FLAG_PERR: parity error flag
\arg USART_FLAG_FERR: frame error flag
\arg USART_FLAG_NERR: noise detected flag
\arg USART_FLAG_ORERR: overrun error flag
\arg USART_FLAG_IDLE: idle line detected flag
\arg USART_FLAG_TC: transmission complete flag
\arg USART_FLAG_LBD: LIN break detected flag
\arg USART_FLAG_CTSF: CTS change flag
\arg USART_FLAG_RT: receiver timeout flag
\arg USART_FLAG_EB: end of block flag
\arg USART_FLAG_AM: address match flag
\arg USART_FLAG_WU: wakeup from deep-sleep mode flag
\arg USART_FLAG_EPERR: early parity error flag
\param[out] none
\retval none
*/
void usart_flag_clear(uint32_t usart_periph, usart_flag_enum flag)
{
USART_INTC(usart_periph) |= BIT(USART_BIT_POS(flag));
}
/*!
\brief enable USART interrupt
\param[in] usart_periph: USARTx(x=0,1)
\param[in] interrupt: interrupt
only one parameter can be selected which is shown as below:
\arg USART_INT_IDLE: idle interrupt
\arg USART_INT_RBNE: read data buffer not empty interrupt and
overrun error interrupt enable interrupt
\arg USART_INT_TC: transmission complete interrupt
\arg USART_INT_TBE: transmit data register empty interrupt
\arg USART_INT_PERR: parity error interrupt
\arg USART_INT_AM: address match interrupt
\arg USART_INT_RT: receiver timeout interrupt
\arg USART_INT_EB: end of block interrupt
\arg USART_INT_LBD: LIN break detection interrupt
\arg USART_INT_ERR: error interrupt enable in multibuffer communication
\arg USART_INT_CTS: CTS interrupt
\arg USART_INT_WU: wakeup from deep-sleep mode interrupt
\arg USART_INT_RFF: receive FIFO full interrupt enable
\param[out] none
\retval none
*/
void usart_interrupt_enable(uint32_t usart_periph, usart_interrupt_enum interrupt)
{
USART_REG_VAL(usart_periph, interrupt) |= BIT(USART_BIT_POS(interrupt));
}
/*!
\brief disable USART interrupt
\param[in] usart_periph: USARTx(x=0,1)
\param[in] interrupt: interrupt
only one parameter can be selected which is shown as below:
\arg USART_INT_IDLE: idle interrupt
\arg USART_INT_RBNE: read data buffer not empty interrupt and
overrun error interrupt
\arg USART_INT_TC: transmission complete interrupt
\arg USART_INT_TBE: transmit data register empty interrupt
\arg USART_INT_PERR: parity error interrupt
\arg USART_INT_AM: address match interrupt
\arg USART_INT_RT: receiver timeout interrupt
\arg USART_INT_EB: end of block interrupt
\arg USART_INT_LBD: LIN break detection interrupt
\arg USART_INT_ERR: error interrupt enable in multibuffer communication
\arg USART_INT_CTS: CTS interrupt
\arg USART_INT_WU: wakeup from deep-sleep mode interrupt
\arg USART_INT_RFF: receive FIFO full interrupt enable
\param[out] none
\retval none
*/
void usart_interrupt_disable(uint32_t usart_periph, usart_interrupt_enum interrupt)
{
USART_REG_VAL(usart_periph, interrupt) &= ~BIT(USART_BIT_POS(interrupt));
}
/*!
\brief get USART interrupt and flag status
\param[in] usart_periph: USARTx(x=0,1)
\param[in] int_flag: interrupt and flag type, refer to usart_interrupt_flag_enum
only one parameter can be selected which is shown as below:
\arg USART_INT_FLAG_EB: end of block interrupt and interrupt flag
\arg USART_INT_FLAG_RT: receiver timeout interrupt flag
\arg USART_INT_FLAG_AM: address match interrupt flag
\arg USART_INT_FLAG_PERR: parity error interrupt flag
\arg USART_INT_FLAG_TBE: transmitter buffer empty interrupt flag
\arg USART_INT_FLAG_TC: transmission complete interrupt flag
\arg USART_INT_FLAG_RBNE: read data buffer not empty interrupt flag
\arg USART_INT_FLAG_RBNE_ORERR: overrun error interrupt flag
\arg USART_INT_FLAG_IDLE: IDLE line detected interrupt flag
\arg USART_INT_FLAG_LBD: LIN break detected interrupt flag
\arg USART_INT_FLAG_WU: wakeup from deep-sleep mode interrupt flag
\arg USART_INT_FLAG_CTS: CTS interrupt flag
\arg USART_INT_FLAG_ERR_NERR: noise error interrupt flag
\arg USART_INT_FLAG_ERR_ORERR: overrun error interrupt flag
\arg USART_INT_FLAG_ERR_FERR: frame error interrupt flag
\arg USART_INT_FLAG_RFFINT: receive FIFO full interrupt flag
\param[out] none
\retval FlagStatus: SET or RESET
*/
FlagStatus usart_interrupt_flag_get(uint32_t usart_periph, usart_interrupt_flag_enum int_flag)
{
uint32_t intenable = 0U, flagstatus = 0U;
/* get the interrupt enable bit status */
intenable = (USART_REG_VAL(usart_periph, int_flag) & BIT(USART_BIT_POS(int_flag)));
/* get the corresponding flag bit status */
flagstatus = (USART_REG_VAL2(usart_periph, int_flag) & BIT(USART_BIT_POS2(int_flag)));
if(flagstatus && intenable){
return SET;
}else{
return RESET;
}
}
/*!
\brief clear USART interrupt flag
\param[in] usart_periph: USARTx(x=0,1)
\param[in] flag: USART interrupt flag
only one parameter can be selected which is shown as below:
\arg USART_INT_FLAG_PERR: parity error interrupt flag
\arg USART_INT_FLAG_ERR_FERR: frame error interrupt flag
\arg USART_INT_FLAG_ERR_NERR: noise detected interrupt flag
\arg USART_INT_FLAG_RBNE_ORERR: overrun error interrupt flag
\arg USART_INT_FLAG_ERR_ORERR: overrun error interrupt flag
\arg USART_INT_FLAG_IDLE: idle line detected interrupt flag
\arg USART_INT_FLAG_TC: transmission complete interrupt flag
\arg USART_INT_FLAG_LBD: LIN break detected interrupt flag
\arg USART_INT_FLAG_CTS: CTS change interrupt flag
\arg USART_INT_FLAG_RT: receiver timeout interrupt flag
\arg USART_INT_FLAG_EB: end of block interrupt flag
\arg USART_INT_FLAG_AM: address match interrupt flag
\arg USART_INT_FLAG_WU: wakeup from deep-sleep mode interrupt flag
\arg USART_INT_FLAG_RFFINT: receive FIFO full interrupt flag
\param[out] none
\retval none
*/
void usart_interrupt_flag_clear(uint32_t usart_periph, usart_interrupt_flag_enum int_flag)
{
if(USART_INT_FLAG_RFFINT == int_flag){
USART_RFCS(usart_periph) &= (uint32_t)(~USART_RFCS_RFFINT);
}else{
USART_INTC(usart_periph) |= BIT(USART_BIT_POS2(int_flag));
}
}
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