TI中文支持网Part Number:TMS320F28388D
//#############################################################################
//
// FILE:UART_ex1_echoback.c
//
// TITLE: UART echoback example.
//
//! \addtogroup driver_example_cm_list
//! <h1>UART Echoback</h1>
//!
//! This test receives and echo-backs data through the UART0 port.
//!
//! A terminal such as 'putty' can be used to view the data from
//! the CM-UART and to send information to the CM-UART. Characters
//! received by the CM-UART port are sent back to the host.
//!
//! \b Running \b the \b Application
//! Open a COM port with the following settings using a terminal:
//! - Find correct COM port
//! - Bits per second = 115200
//! - Data Bits = 8
//! - Parity = None
//! - Stop Bits = 1
//! - Hardware Control = None
//!
//! The program will print out a greeting and then ask you to
//! enter a character which it will echo back to the terminal.
//!
//! \b Watch \b Variables \n
//! - None
//!
//! \b External \b Connections \n
//! Connect the UART0 port to a PC via a transceiver and cable.
//! - GPIO85 is UART0RX/CMUARTRXA(Connect to Pin3, PC-TX, of serial DB9 cable)
//! - GPIO84 is UART0TX/CMUARTTXA(Connect to Pin2, PC-RX, of serial DB9 cable)
//!
//! \note The pin muxing for the UART0 port needs to be done by the master
//! CPU1. The common configuration example provided in the C28x folder can be
//! used for making GPIO85 as the UART Rx pin and GPIO84 as the UART Tx pin.
//
//#############################################################################
// $TI Release: F2838x Support Library v3.03.00.00 $
// $Release Date: Sun Oct 4 16:00:36 IST 2020 $
// $Copyright:
// Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
//Redistributions of source code must retain the above copyright
//notice, this list of conditions and the following disclaimer.
//
//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.
//
//Neither the name of Texas Instruments Incorporated 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
// OWNER 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.
// $
//#############################################################################
//
// Included Files
//
#include <stdint.h>
#include <stdbool.h>
#include "cm.h"
//
// Defines
//
#define NUM_UART_DATA4
uint16_t count,i,Data[100];
__interrupt void UART_RX_IntHandler(void);
//
// Main
//
void main(void)
{//// disable WD, enable peripheral clocks.//CM_init();//// Configure UART0 for echoback.Set up to transfer data at 115200 baud.//UART_setConfig(UART0_BASE,UART_CLK_FREQ , 115200,(UART_CONFIG_WLEN_8 |UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));//// Put a character to show start of example. This will display on the// terminal.//UART_writeChar(UART0_BASE, '!');//// Enable the UART0 interrupt on the processor (NVIC).//UART_registerInterrupt(INT_UART0,UART_RX_IntHandler);//// FIFO enable//UART_enableFIFO(UART0_BASE);//// FIFO interrupt levels are set to generate an interrupt// when the TX FIFO is less than or equal to 7/8 empty and the// RX FIFO is greater than or equal to 1/8 full.//UART_setFIFOLevel(UART0_BASE, UART_FIFO_TX1_8, UART_FIFO_RX1_8);//// FIFO receive interrupt configuration//UART_clearInterruptStatus(UART0_BASE,UART_INT_RX | UART_INT_RT);UART_enableInterrupt(UART0_BASE,UART_INT_RX);UART_enableLoopback(UART0_BASE);//// Loop forever echoing data through the UART.for(i=0;i<9;i++){UART_writeChar(UART0_BASE, i);}while(1){}
}
__interrupt void UART_RX_IntHandler(void)
{uint32_t ui32Status;//// Get the interrupt status.//ui32Status = UART_getInterruptStatus(UART0_BASE, UART_RAW_INT);//// Clear the asserted interrupts.//UART_clearInterruptStatus(UART0_BASE, ui32Status);//// Loop while there are characters in the receive FIFO.//while(UART_isDataAvailable(UART0_BASE)){//
//// Read the next character from the UART and write it back to the UART.
////
//UART_writeCharNonBlocking(UART0_BASE,
//UART_readCharNonBlocking(UART0_BASE));Data[count] = UART_readChar(UART0_BASE);}count++;
}
//
// End of File
//
DSP应用：
//#############################################################################
//
// FILE:UART_ex1_echoback.c
//
// TITLE:UART echoback example.
//
//! \addtogroup driver_example_cm_list
//! <h1>UART Echoback</h1>
//!
//!This test receives and echo-backs data through the UART0 port.
//!
//!A terminal such as 'putty' can be used to view the data from
//!the CM-UART and to send information to the CM-UART. Characters//!received by the CM-UART port are sent back to the host.
//!
//!\b Running \b the \b Application
//!Open a COM port with the following settings using a terminal:
//!-Find correct COM port
//!-Bits per second = 115200
//!-Data Bits = 8
//!-Parity = None
//!-Stop Bits = 1
//!-Hardware Control = None
//!
//!The program will print out a greeting and then ask you to
//!enter a character which it will echo back to the terminal.
//!
//!\b Watch \b Variables \n
//!- None
//!
//! \b External \b Connections \n
//!Connect the UART0 port to a PC via a transceiver and cable.
//!- GPIO85 is UART0RX/CMUARTRXA(Connect to Pin3, PC-TX, of serial DB9 cable)
//!- GPIO84 is UART0TX/CMUARTTXA(Connect to Pin2, PC-RX, of serial DB9 cable)
//!//!\note The pin muxing for the UART0 port needs to be done by the master//!CPU1. The common configuration example provided in the C28x folder can be//!used for making GPIO85 as the UART Rx pin and GPIO84 as the UART Tx pin.
//
//#############################################################################
// $TI Release: F2838x Support Library v3.03.00.00 $
// $Release Date: Sun Oct4 16:00:36 IST 2020 $
// $Copyright:
// Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without// modification, are permitted provided that the following conditions// are met:
////Redistributions of source code must retain the above copyright//notice, this list of conditions and the following disclaimer.
////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.
////Neither the name of Texas Instruments Incorporated 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// OWNER 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.
// $
//#############################################################################//
// Included Files
//
#include <stdint.h>
#include <stdbool.h>#include "cm.h"//
// Defines
//
#define NUM_UART_DATA4uint16_t count,i,Data[100];
__interrupt void UART_RX_IntHandler(void);//
// Main
//
void main(void)
{//// disable WD, enable peripheral clocks.//CM_init();//// Configure UART0 for echoback.Set up to transfer data at 115200 baud.//UART_setConfig(UART0_BASE,UART_CLK_FREQ , 115200,(UART_CONFIG_WLEN_8 |UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));//// Put a character to show start of example.This will display on the// terminal.////UART_writeChar(UART0_BASE, '!');//// Enable the UART0 interrupt on the processor (NVIC).//UART_registerInterrupt(INT_UART0,UART_RX_IntHandler);//// FIFO enable//UART_enableFIFO(UART0_BASE);//// FIFO interrupt levels are set to generate an interrupt// when the TX FIFO is less than or equal to 7/8 empty and the// RX FIFO is greater than or equal to 1/8 full.//UART_setFIFOLevel(UART0_BASE, UART_FIFO_TX1_8, UART_FIFO_RX1_8);//// FIFO receive interrupt configuration//UART_clearInterruptStatus(UART0_BASE,UART_INT_RX | UART_INT_RT);UART_enableInterrupt(UART0_BASE,UART_INT_RX);UART_enableLoopback(UART0_BASE);//// Loop forever echoing data through the UART.for(i=0;i<9;i++){UART_writeChar(UART0_BASE, i);}while(1){}
}__interrupt void UART_RX_IntHandler(void)
{uint32_t ui32Status;//// Get the interrupt status.//ui32Status = UART_getInterruptStatus(UART0_BASE, UART_RAW_INT);//// Clear the asserted interrupts.//UART_clearInterruptStatus(UART0_BASE, ui32Status);//// Loop while there are characters in the receive FIFO.//
//while(UART_isDataAvailable(UART0_BASE))
//{//
//// Read the next character from the UART and write it back to the UART.
////
//UART_writeCharNonBlocking(UART0_BASE,
//UART_readCharNonBlocking(UART0_BASE));Data[count] = UART_readChar(UART0_BASE);
//}count++;
}//
// End of File
//
,
DSP应用：
取消 while(UART_isDataAvailable(UART0_BASE))后变奇数但最后一次发送为什么不触发中断？实际测试过程也是少接收一个字节数据
,
Susan Yang：
DSP应用 说：取消 while(UART_isDataAvailable(UART0_BASE))后变奇数但最后一次发送为什么不触发中断？
您现在使用的是controlcard？直接测试例程是测试成功了？
对于controlcard，可以将 GPIO 84 连接到 GPIO 29，将 GPIO 85 连接到 GPIO 28，以便您可以使用控制卡的内部 ftdi 转换器并尝试运行串行终端。请注意，您可以运行相同的引脚复用器配置（84,85）和示例，因为 GPIO 28、29 硬连线到内部 ftdi。
您也可以在CCS Debug Session -> View -> Terminal -> Connect Serial Terminal 中打开串口终端（设置波特率参数，点击确定）。
这是一个字符回显的例程。不太理解您所说的偶次是什么意思
,
Susan Yang：
光标放在CCS的 Terminal 内，在键盘上输入 12345
而后，如下面视频所示
uart.zip
