842 lines
26 KiB
C
842 lines
26 KiB
C
/*!
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\file gd32f30x_usart.c
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\brief USART driver
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*/
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/*
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Copyright (C) 2017 GigaDevice
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2017-02-10, V1.0.1, firmware for GD32F30x
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*/
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#include "gd32f30x_usart.h"
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/*!
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\brief reset USART/UART
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_deinit(uint32_t usart_periph)
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{
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switch(usart_periph){
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case USART0:
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rcu_periph_reset_enable(RCU_USART0RST);
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rcu_periph_reset_disable(RCU_USART0RST);
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break;
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case USART1:
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rcu_periph_reset_enable(RCU_USART1RST);
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rcu_periph_reset_disable(RCU_USART1RST);
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break;
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case USART2:
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rcu_periph_reset_enable(RCU_USART2RST);
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rcu_periph_reset_disable(RCU_USART2RST);
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break;
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case UART3:
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rcu_periph_reset_enable(RCU_UART3RST);
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rcu_periph_reset_disable(RCU_UART3RST);
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break;
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case UART4:
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rcu_periph_reset_enable(RCU_UART4RST);
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rcu_periph_reset_disable(RCU_UART4RST);
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break;
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default:
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break;
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}
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}
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/*!
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\brief configure USART baud rate value
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] baudval: baud rate value
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\param[out] none
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\retval none
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*/
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void usart_baudrate_set(uint32_t usart_periph, uint32_t baudval)
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{
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uint32_t uclk=0U, intdiv=0U, fradiv=0U, udiv=0U;
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switch(usart_periph){
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/* get clock frequency */
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case USART0:
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uclk=rcu_clock_freq_get(CK_APB2);
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break;
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case USART1:
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uclk=rcu_clock_freq_get(CK_APB1);
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break;
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case USART2:
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uclk=rcu_clock_freq_get(CK_APB1);
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break;
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case UART3:
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uclk=rcu_clock_freq_get(CK_APB1);
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break;
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case UART4:
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uclk=rcu_clock_freq_get(CK_APB1);
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break;
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default:
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break;
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}
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/* oversampling by 16, configure the value of USART_BAUD */
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udiv = (uclk+baudval/2U)/baudval;
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intdiv = udiv & 0xfff0U;
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fradiv = udiv & 0xfU;
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USART_BAUD(usart_periph) |= ((USART_BAUD_FRADIV | USART_BAUD_INTDIV) & (intdiv | fradiv));
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}
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/*!
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\brief configure USART parity
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] paritycfg: configure USART parity
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\arg USART_PM_NONE: no parity
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\arg USART_PM_ODD: odd parity
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\arg USART_PM_EVEN: even parity
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\param[out] none
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\retval none
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*/
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void usart_parity_config(uint32_t usart_periph, uint32_t paritycfg)
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{
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/* clear USART_CTL0 PM,PCEN bits */
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USART_CTL0(usart_periph) &= ~(USART_CTL0_PM | USART_CTL0_PCEN);
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/* configure USART parity mode */
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USART_CTL0(usart_periph) |= paritycfg ;
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}
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/*!
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\brief configure USART word length
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] wlen: USART word length configure
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\arg USART_WL_8BIT: 8 bits
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\arg USART_WL_9BIT: 9 bits
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\param[out] none
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\retval none
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*/
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void usart_word_length_set(uint32_t usart_periph, uint32_t wlen)
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{
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/* clear USART_CTL0 WL bit */
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USART_CTL0(usart_periph) &= ~USART_CTL0_WL;
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/* configure USART word length */
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USART_CTL0(usart_periph) |= wlen;
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}
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/*!
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\brief configure USART stop bit length
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] stblen: USART stop bit configure
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\arg USART_STB_1BIT: 1 bit
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\arg USART_STB_0_5BIT: 0.5 bit, not available for UARTx(x=3,4)
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\arg USART_STB_2BIT: 2 bits
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\arg USART_STB_1_5BIT: 1.5 bits, not available for UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_stop_bit_set(uint32_t usart_periph, uint32_t stblen)
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{
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/* clear USART_CTL1 STB bits */
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USART_CTL1(usart_periph) &= ~USART_CTL1_STB;
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/* configure USART stop bits */
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USART_CTL1(usart_periph) |= stblen;
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}
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/*!
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\brief enable USART
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_enable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) |= USART_CTL0_UEN;
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}
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/*!
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\brief disable USART
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_disable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_UEN);
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}
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/*!
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\brief configure USART transmitter
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] txconfig: enable or disable USART transmitter
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\arg USART_TRANSMIT_ENABLE: enable USART transmission
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\arg USART_TRANSMIT_DISABLE: enable USART transmission
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\param[out] none
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\retval none
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*/
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void usart_transmit_config(uint32_t usart_periph, uint32_t txconfig)
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{
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uint32_t ctl = 0U;
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ctl = USART_CTL0(usart_periph);
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ctl &= ~USART_CTL0_TEN;
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ctl |= txconfig;
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/* configure transfer mode */
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USART_CTL0(usart_periph) = ctl;
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}
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/*!
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\brief configure USART receiver
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] rxconfig: enable or disable USART receiver
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\arg USART_RECEIVE_ENABLE: enable USART reception
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\arg USART_RECEIVE_DISABLE: disable USART reception
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\param[out] none
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\retval none
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*/
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void usart_receive_config(uint32_t usart_periph, uint32_t rxconfig)
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{
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uint32_t ctl = 0U;
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ctl = USART_CTL0(usart_periph);
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ctl &= ~USART_CTL0_REN;
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ctl |= rxconfig;
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/* configure transfer mode */
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USART_CTL0(usart_periph) = ctl;
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}
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/*!
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\brief data is transmitted/received with the LSB/MSB first
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[in] msbf: LSB/MSB
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\arg USART_MSBF_LSB: LSB first
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\arg USART_MSBF_MSB: MSB first
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\param[out] none
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\retval none
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*/
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void usart_data_first_config(uint32_t usart_periph, uint32_t msbf)
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{
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USART_CTL3(usart_periph) &= ~(USART_CTL3_MSBF);
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USART_CTL3(usart_periph) |= msbf;
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}
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/*!
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\brief configure USART inversion
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[in] invertpara: refer to enum USART_INVERT_CONFIG
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\arg USART_DINV_ENABLE: data bit level inversion
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\arg USART_DINV_DISABLE: data bit level not inversion
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\arg USART_TXPIN_ENABLE: TX pin level inversion
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\arg USART_TXPIN_DISABLE: TX pin level not inversion
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\arg USART_RXPIN_ENABLE: RX pin level inversion
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\arg USART_RXPIN_DISABLE: RX pin level not inversion
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\param[out] none
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\retval none
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*/
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void usart_invert_config(uint32_t usart_periph, usart_invert_enum invertpara)
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{
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/* inverted or not the specified siginal */
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switch(invertpara){
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case USART_DINV_ENABLE:
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USART_CTL3(usart_periph) |= USART_CTL3_DINV;
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break;
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case USART_TXPIN_ENABLE:
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USART_CTL3(usart_periph) |= USART_CTL3_TINV;
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break;
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case USART_RXPIN_ENABLE:
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USART_CTL3(usart_periph) |= USART_CTL3_RINV;
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break;
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case USART_DINV_DISABLE:
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USART_CTL3(usart_periph) &= ~(USART_CTL3_DINV);
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break;
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case USART_TXPIN_DISABLE:
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USART_CTL3(usart_periph) &= ~(USART_CTL3_TINV);
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break;
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case USART_RXPIN_DISABLE:
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USART_CTL3(usart_periph) &= ~(USART_CTL3_RINV);
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break;
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default:
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break;
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}
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}
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/*!
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\brief enable receiver timeout of USART
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[out] none
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\retval none
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*/
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void usart_receiver_timeout_enable(uint32_t usart_periph)
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{
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USART_CTL3(usart_periph) |= USART_CTL3_RTEN;
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}
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/*!
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\brief disable receiver timeout of USART
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[out] none
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\retval none
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*/
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void usart_receiver_timeout_disable(uint32_t usart_periph)
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{
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USART_CTL3(usart_periph) &= ~(USART_CTL3_RTEN);
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}
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/*!
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\brief set the receiver timeout threshold of USART
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[in] rtimeout: 0-0xFFFFFF
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\param[out] none
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\retval none
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*/
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void usart_receiver_timeout_threshold_config(uint32_t usart_periph, uint32_t rtimeout)
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{
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USART_RT(usart_periph) &= ~(USART_RT_RT);
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USART_RT(usart_periph) |= rtimeout;
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}
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/*!
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\brief USART transmit data function
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] data: data of transmission
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\param[out] none
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\retval none
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*/
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void usart_data_transmit(uint32_t usart_periph, uint32_t data)
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{
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USART_DATA(usart_periph) = ((uint16_t)USART_DATA_DATA & data);
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}
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/*!
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\brief USART receive data function
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval data of received
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*/
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uint16_t usart_data_receive(uint32_t usart_periph)
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{
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return (uint16_t)(GET_BITS(USART_DATA(usart_periph), 0U, 8U));
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}
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/*!
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\brief configure the address of the USART in wake up by address match mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] addr: address of USART/UART
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\param[out] none
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\retval none
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*/
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void usart_address_config(uint32_t usart_periph, uint8_t addr)
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{
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USART_CTL1(usart_periph) &= ~(USART_CTL1_ADDR);
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USART_CTL1(usart_periph) |= (USART_CTL1_ADDR & addr);
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}
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/*!
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\brief receiver in mute mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_mute_mode_enable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) |= USART_CTL0_RWU;
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}
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/*!
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\brief receiver in active mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_mute_mode_disable(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_RWU);
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}
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/*!
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\brief configure wakeup method in mute mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] wmethod: two methods be used to enter or exit the mute mode
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\arg USART_WM_IDLE: idle line
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\arg USART_WM_ADDR: address mask
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\param[out] none
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\retval none
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*/
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void usart_mute_mode_wakeup_config(uint32_t usart_periph, uint32_t wmethod)
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{
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USART_CTL0(usart_periph) &= ~(USART_CTL0_WM);
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USART_CTL0(usart_periph) |= wmethod;
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}
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/*!
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\brief enable LIN mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_lin_mode_enable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) |= USART_CTL1_LMEN;
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}
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/*!
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\brief disable LIN mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_lin_mode_disable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) &= ~(USART_CTL1_LMEN);
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}
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/*!
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\brief configure lin break frame length
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[in] lblen: lin break frame length
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\arg USART_LBLEN_10B: 10 bits
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\arg USART_LBLEN_11B: 11 bits
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\param[out] none
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\retval none
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*/
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void usart_lin_break_dection_length_config(uint32_t usart_periph, uint32_t lblen)
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{
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USART_CTL1(usart_periph) &= ~(USART_CTL1_LBLEN);
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USART_CTL1(usart_periph) |= (USART_CTL1_LBLEN & lblen);
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}
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/*!
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\brief send break frame
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_send_break(uint32_t usart_periph)
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{
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USART_CTL0(usart_periph) |= USART_CTL0_SBKCMD;
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}
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/*!
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\brief enable half duplex mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_halfduplex_enable(uint32_t usart_periph)
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{
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USART_CTL2(usart_periph) |= USART_CTL2_HDEN;
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}
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/*!
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\brief disable half duplex mode
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\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
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\param[out] none
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\retval none
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*/
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void usart_halfduplex_disable(uint32_t usart_periph)
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{
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USART_CTL2(usart_periph) &= ~(USART_CTL2_HDEN);
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}
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/*!
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\brief enable CK pin in synchronous mode
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[out] none
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\retval none
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*/
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void usart_synchronous_clock_enable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) |= USART_CTL1_CKEN;
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}
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/*!
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\brief disable CK pin in synchronous mode
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[out] none
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\retval none
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*/
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void usart_synchronous_clock_disable(uint32_t usart_periph)
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{
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USART_CTL1(usart_periph) &= ~(USART_CTL1_CKEN);
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}
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/*!
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\brief configure USART synchronous mode parameters
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\param[in] usart_periph: USARTx(x=0,1,2)
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\param[in] clen: CK length
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\arg USART_CLEN_NONE: there are 7 CK pulses for an 8 bit frame and 8 CK pulses for a 9 bit frame
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\arg USART_CLEN_EN: there are 8 CK pulses for an 8 bit frame and 9 CK pulses for a 9 bit frame
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\param[in] cph: clock phase
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\arg USART_CPH_1CK: first clock transition is the first data capture edge
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\arg USART_CPH_2CK: second clock transition is the first data capture edge
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\param[in] cpl: clock polarity
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\arg USART_CPL_LOW: steady low value on CK pin
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\arg USART_CPL_HIGH: steady high value on CK pin
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\param[out] none
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|
\retval none
|
|
*/
|
|
void usart_synchronous_clock_config(uint32_t usart_periph, uint32_t clen, uint32_t cph, uint32_t cpl)
|
|
{
|
|
uint32_t ctl = 0U;
|
|
|
|
/* read USART_CTL1 register */
|
|
ctl = USART_CTL1(usart_periph);
|
|
/* set CK length, CK phase, CK polarity */
|
|
ctl |= (USART_CTL1_CLEN & clen) | (USART_CTL1_CPH & cph) | (USART_CTL1_CPL & cpl);
|
|
|
|
USART_CTL1(usart_periph) |= ctl;
|
|
}
|
|
|
|
/*!
|
|
\brief configure guard time value in smartcard mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[in] guat: guard time value
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_guard_time_config(uint32_t usart_periph,uint32_t guat)
|
|
{
|
|
USART_GP(usart_periph) &= ~(USART_GP_GUAT);
|
|
USART_GP(usart_periph) |= (USART_GP_GUAT & ((guat)<<8));
|
|
}
|
|
|
|
/*!
|
|
\brief enable smartcard mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_smartcard_mode_enable(uint32_t usart_periph)
|
|
{
|
|
USART_CTL2(usart_periph) |= USART_CTL2_SCEN;
|
|
}
|
|
|
|
/*!
|
|
\brief disable smartcard mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_smartcard_mode_disable(uint32_t usart_periph)
|
|
{
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_SCEN);
|
|
}
|
|
|
|
/*!
|
|
\brief enable NACK in smartcard mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_smartcard_mode_nack_enable(uint32_t usart_periph)
|
|
{
|
|
USART_CTL2(usart_periph) |= USART_CTL2_NKEN;
|
|
}
|
|
|
|
/*!
|
|
\brief disable NACK in smartcard mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_smartcard_mode_nack_disable(uint32_t usart_periph)
|
|
{
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_NKEN);
|
|
}
|
|
|
|
/*!
|
|
\brief configure smartcard auto-retry number
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[in] scrtnum: smartcard auto-retry number
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_smartcard_autoretry_config(uint32_t usart_periph, uint32_t scrtnum)
|
|
{
|
|
USART_CTL3(usart_periph) &= ~(USART_CTL3_SCRTNUM);
|
|
USART_CTL3(usart_periph) |= (USART_CTL3_SCRTNUM & ((scrtnum)<<1));
|
|
}
|
|
|
|
/*!
|
|
\brief configure block length in Smartcard T=1 reception
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[in] bl: block length
|
|
\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)<<24));
|
|
}
|
|
|
|
/*!
|
|
\brief enable IrDA mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_irda_mode_enable(uint32_t usart_periph)
|
|
{
|
|
USART_CTL2(usart_periph) |= USART_CTL2_IREN;
|
|
}
|
|
|
|
/*!
|
|
\brief disable IrDA mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_irda_mode_disable(uint32_t usart_periph)
|
|
{
|
|
USART_CTL2(usart_periph) &= ~(USART_CTL2_IREN);
|
|
}
|
|
|
|
/*!
|
|
\brief configure the peripheral clock prescaler in USART IrDA low-power mode
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] psc: 0x00-0xFF
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_prescaler_config(uint32_t usart_periph, uint8_t psc)
|
|
{
|
|
USART_GP(usart_periph) &= ~(USART_GP_PSC);
|
|
USART_GP(usart_periph) |= psc;
|
|
}
|
|
|
|
/*!
|
|
\brief configure IrDA low-power
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] irlp: IrDA low-power or normal
|
|
\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)
|
|
{
|
|
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=0,1,2)
|
|
\param[in] hardwareflow: enable or disable RTS
|
|
\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)
|
|
{
|
|
uint32_t ctl = 0U;
|
|
|
|
ctl = USART_CTL2(usart_periph);
|
|
ctl &= ~USART_CTL2_RTSEN;
|
|
ctl |= rtsconfig;
|
|
/* configure RTS */
|
|
USART_CTL2(usart_periph) = ctl;
|
|
}
|
|
|
|
/*!
|
|
\brief configure hardware flow control CTS
|
|
\param[in] usart_periph: USARTx(x=0,1,2)
|
|
\param[in] hardwareflow: enable or disable CTS
|
|
\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)
|
|
{
|
|
uint32_t ctl = 0U;
|
|
|
|
ctl = USART_CTL2(usart_periph);
|
|
ctl &= ~USART_CTL2_CTSEN;
|
|
ctl |= ctsconfig;
|
|
/* configure CTS */
|
|
USART_CTL2(usart_periph) = ctl;
|
|
}
|
|
|
|
/*!
|
|
\brief configure USART DMA reception
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3)
|
|
\param[in] dmacmd: enable or disable DMA for reception
|
|
\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)
|
|
{
|
|
uint32_t ctl = 0U;
|
|
|
|
ctl = USART_CTL2(usart_periph);
|
|
ctl &= ~USART_CTL2_DENR;
|
|
ctl |= dmacmd;
|
|
/* configure DMA reception */
|
|
USART_CTL2(usart_periph) = ctl;
|
|
}
|
|
|
|
/*!
|
|
\brief configure USART DMA transmission
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3)
|
|
\param[in] dmacmd: enable or disable DMA for transmission
|
|
\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)
|
|
{
|
|
uint32_t ctl = 0U;
|
|
|
|
ctl = USART_CTL2(usart_periph);
|
|
ctl &= ~USART_CTL2_DENT;
|
|
ctl |= dmacmd;
|
|
/* configure DMA transmission */
|
|
USART_CTL2(usart_periph) = ctl;
|
|
}
|
|
|
|
/*!
|
|
\brief get flag in STAT0/STAT1 register
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] flag: USART flags, refer to usart_flag_enum
|
|
only one among these parameters can be selected
|
|
\arg USART_FLAG_CTS: CTS change flag
|
|
\arg USART_FLAG_LBD: LIN break detected flag
|
|
\arg USART_FLAG_TBE: transmit data buffer empty
|
|
\arg USART_FLAG_TC: transmission complete
|
|
\arg USART_FLAG_RBNE: read data buffer not empty
|
|
\arg USART_FLAG_IDLE: IDLE frame detected flag
|
|
\arg USART_FLAG_ORERR: overrun error
|
|
\arg USART_FLAG_NERR: noise error flag
|
|
\arg USART_FLAG_FERR: frame error flag
|
|
\arg USART_FLAG_PERR: parity error flag
|
|
\arg USART_FLAG_BSY: busy flag
|
|
\arg USART_FLAG_EB: end of block flag
|
|
\arg USART_FLAG_RT: receiver timeout 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 flag in STAT0/STAT1 register
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] flag: USART flags, refer to usart_flag_enum
|
|
only one among these parameters can be selected
|
|
\arg USART_FLAG_CTS: CTS change flag
|
|
\arg USART_FLAG_LBD: LIN break detected flag
|
|
\arg USART_FLAG_TC: transmission complete
|
|
\arg USART_FLAG_RBNE: read data buffer not empty
|
|
\arg USART_FLAG_EB: end of block flag
|
|
\arg USART_FLAG_RT: receiver timeout flag
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_flag_clear(uint32_t usart_periph, usart_flag_enum flag)
|
|
{
|
|
USART_REG_VAL(usart_periph, flag) &= ~BIT(USART_BIT_POS(flag));
|
|
}
|
|
|
|
/*!
|
|
\brief enable USART interrupt
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] int_flag
|
|
only one among these parameters can be selected
|
|
\arg USART_INT_PERR: parity error interrupt
|
|
\arg USART_INT_TBE: transmitter buffer empty interrupt
|
|
\arg USART_INT_TC: transmission complete interrupt
|
|
\arg USART_INT_RBNE: read data buffer not empty interrupt and overrun error interrupt
|
|
\arg USART_INT_IDLE: IDLE line detected interrupt
|
|
\arg USART_INT_LBD: LIN break detected interrupt
|
|
\arg USART_INT_ERR: error interrupt
|
|
\arg USART_INT_CTS: CTS interrupt
|
|
\arg USART_INT_RT: interrupt enable bit of receive timeout event
|
|
\arg USART_INT_EB: interrupt enable bit of end of block event
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_interrupt_enable(uint32_t usart_periph, uint32_t int_flag)
|
|
{
|
|
USART_REG_VAL(usart_periph, int_flag) |= BIT(USART_BIT_POS(int_flag));
|
|
}
|
|
|
|
/*!
|
|
\brief disable USART interrupt
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] int_flag
|
|
only one among these parameters can be selected
|
|
\arg USART_INT_PERR: parity error interrupt
|
|
\arg USART_INT_TBE: transmitter buffer empty interrupt
|
|
\arg USART_INT_TC: transmission complete interrupt
|
|
\arg USART_INT_RBNE: read data buffer not empty interrupt and overrun error interrupt
|
|
\arg USART_INT_IDLE: IDLE line detected interrupt
|
|
\arg USART_INT_LBD: LIN break detected interrupt
|
|
\arg USART_INT_ERR: error interrupt
|
|
\arg USART_INT_CTS: CTS interrupt
|
|
\arg USART_INT_RT: interrupt enable bit of receive timeout event
|
|
\arg USART_INT_EB: interrupt enable bit of end of block event
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_interrupt_disable(uint32_t usart_periph, uint32_t int_flag)
|
|
{
|
|
USART_REG_VAL(usart_periph, int_flag) &= ~BIT(USART_BIT_POS(int_flag));
|
|
}
|
|
|
|
/*!
|
|
\brief get USART interrupt and flag status
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] int_flag
|
|
\arg USART_INT_FLAG_PERR: parity error interrupt and flag
|
|
\arg USART_INT_FLAG_TBE: transmitter buffer empty interrupt and flag
|
|
\arg USART_INT_FLAG_TC: transmission complete interrupt and flag
|
|
\arg USART_INT_FLAG_RBNE: read data buffer not empty interrupt and flag
|
|
\arg USART_INT_FLAG_RBNE_ORERR: read data buffer not empty interrupt and overrun error flag
|
|
\arg USART_INT_FLAG_IDLE: IDLE line detected interrupt and flag
|
|
\arg USART_INT_FLAG_LBD: LIN break detected interrupt and flag
|
|
\arg USART_INT_FLAG_CTS: CTS interrupt and flag
|
|
\arg USART_INT_FLAG_ERR_ORERR: error interrupt and overrun error
|
|
\arg USART_INT_FLAG_ERR_NERR: error interrupt and noise error flag
|
|
\arg USART_INT_FLAG_ERR_FERR: error interrupt and frame error flag
|
|
\arg USART_INT_FLAG_EB: interrupt enable bit of end of block event and flag
|
|
\arg USART_INT_FLAG_RT: interrupt enable bit of receive timeout event and flag
|
|
\param[out] none
|
|
\retval FlagStatus
|
|
*/
|
|
FlagStatus usart_interrupt_flag_get(uint32_t usart_periph, uint32_t 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 in STAT0/STAT1 register
|
|
\param[in] usart_periph: USARTx(x=0,1,2)/UARTx(x=3,4)
|
|
\param[in] flag: USART interrupt flag
|
|
\arg USART_INT_FLAG_CTS: CTS change flag
|
|
\arg USART_INT_FLAG_LBD: LIN break detected flag
|
|
\arg USART_INT_FLAG_TC: transmission complete
|
|
\arg USART_INT_FLAG_RBNE: read data buffer not empty
|
|
\arg USART_INT_FLAG_EB: end of block flag
|
|
\arg USART_INT_FLAG_RT: receiver timeout flag
|
|
\param[out] none
|
|
\retval none
|
|
*/
|
|
void usart_interrupt_flag_clear(uint32_t usart_periph, uint32_t flag)
|
|
{
|
|
USART_REG_VAL2(usart_periph, flag) &= ~BIT(USART_BIT_POS2(flag));
|
|
}
|