USART利用分数波特率发生器提供宽范围的波特率选择。 它支持同步单向通信和半双工单线通信,也支持LIN(局部互连网),智能卡协议和IrDA(红外数据 组织)SIR ENDEC规范,以及调制解调器(CTS/RTS)操作。它还允许多处理器通信。 使用多缓冲器配置的DMA方式,可以实现高速数据通信。
nRTS:请求以发送(Request To Send),n表示低电平有效。如果使能RTS流控制,当USART接收器准备好接收新数据时就会将nRTS变成低电平; 当接收寄存器已满时,nRTS将被设置为高电平。该引脚只适用于硬件流控制。 nCTS:清除以发送(Clear To Send),n表示低电平有效。如果使能CTS流控制,发送器在发送下一帧数据之前会检测...
usart_baudrate_set(USART0, 115200U);usart_word_length_set(USART0, USART_WL_8BIT);usart_stop_bit_set(USART0, USART_STB_1BIT);usart_parity_config(USART0, USART_PM_NONE);usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE);usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE...
usart_parity_config(USART0, USART_PM_NONE); usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE); usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE); usart_receive_config(USART0, USART_RECEIVE_ENABLE); usart_transmit_config(USART0, USART_TRANSMIT_ENABLE); usart_enable(USART0);...
LL_USART_HWCONTROL_RTS RTS LL_USART_HWCONTROL_CTS CTS LL_USART_HWCONTROL_RTS_CTS CTS&RTS */uint32_tOverSampling;/* 设置过采样。通过LL_USART_SetOverSampling()实现。※不要更改 @param OverSampling = LL_USART_OVERSAMPLING_16 LL_USART_OVERSAMPLING_8 ...
nRTS:请求以发送(Request To Send), n 表示低电平有效。如果使能 RTS 流控制,当USART 接收器准备好接收新数据时就会将 nRTS 变成低电平;当接收寄存器已满时,nRTS 将被设置为高电平。该引脚只适用于硬件流控制。 nCTS:清除以发送(Clear To Send), n 表示低电平有效。如果使能 CTS 流控制,发送器在发送下一...
rts_config(USART0, USART_RTS_DISABLE);usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE)...
usart_parity_config(USART0, USART_PM_NONE); usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE); usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE); usart_receive_config(USART0, USART_RECEIVE_ENABLE); usart_transmit_config(USART0, USART_TRANSMIT_ENABLE); usart_enable(USART0);...
48、T HardwareFlowCo ntrol No ne没有流量控制USART HardwareFlowC on trol RTS发送请求RTS使能USART HardwareFlowC on trol CTS清除发送CTS使能USART HardwareFlowCo ntrol RTS CTSRTS和CTS使能6USART_ModeUSART_Mode指定了使能或者失能发送和接收模式。表4-2-6给出了该参数可取的值。表4-2-6 USART Mode成员...
(USART0, USART_PM_NONE); usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE); usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE); usart_receive_config(USART0, USART_RECEIVE_ENABLE); usart_transmit_config(USART0, USART_TRANSMIT_ENABLE); usart_enable(USART0); } /* retarget ...