Part Number: TMS320F28027
Other Parts Discussed in Thread: MOTORWARE, C2000WARE
Tool/software:
//###########################################################################
//
// FILE: Example_2802xSci_Echoback.c
//
// TITLE: f2802x Device SCI Echoback.
//
// ASSUMPTIONS:
//
// This program requires the f2802x header files.
// As supplied, this project is configured for "boot to SARAM" operation.
//
// Connect the SCI-A port to a PC via a transciever and cable.
// The PC application 'hypterterminal' can be used to view the data
// from the SCI and to send information to the SCI. Characters received
// by the SCI port are sent back to the host.
//
// As supplied, this project is configured for "boot to SARAM"
// operation. The 2802x Boot Mode table is shown below.
// For information on configuring the boot mode of an eZdsp,
// please refer to the documentation included with the eZdsp,
//
// $Boot_Table
// While an emulator is connected to your device, the TRSTn pin = 1,
// which sets the device into EMU_BOOT boot mode. In this mode, the
// peripheral boot modes are as follows:
//
// Boot Mode: EMU_KEY EMU_BMODE
// (0xD00) (0xD01)
// ---------------------------------------
// Wait !=0x55AA X
// I/O 0x55AA 0x0000
// SCI 0x55AA 0x0001
// Wait 0x55AA 0x0002
// Get_Mode 0x55AA 0x0003
// SPI 0x55AA 0x0004
// I2C 0x55AA 0x0005
// OTP 0x55AA 0x0006
// Wait 0x55AA 0x0007
// Wait 0x55AA 0x0008
// SARAM 0x55AA 0x000A <-- "Boot to SARAM"
// Flash 0x55AA 0x000B
// Wait 0x55AA Other
//
// Write EMU_KEY to 0xD00 and EMU_BMODE to 0xD01 via the debugger
// according to the Boot Mode Table above. Build/Load project,
// Reset the device, and Run example
//
// $End_Boot_Table
//
// DESCRIPTION:
//
//
// This test receives and echo-backs data through the SCI-A port.
//
// 1) Configure hyperterminal:
// Use the included hyperterminal configuration file SCI_96.ht.
// To load this configuration in hyperterminal: file->open
// and then select the SCI_96.ht file.
// 2) Check the COM port.
// The configuration file is currently setup for COM1.
// If this is not correct, disconnect Call->Disconnect
// Open the File-Properties dialog and select the correct COM port.
// 3) Connect hyperterminal Call->Call
// and then start the 2802x SCI echoback program execution.
// 4) The program will print out a greeting and then ask you to
// enter a character which it will echo back to hyperterminal.
//
//
// Watch Variables:
// LoopCount for the number of characters sent
// ErrorCount
//
//
//###########################################################################
// $TI Release: $
// $Release Date: $
// $Copyright:
// Copyright (C) 2009-2023 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 "DSP28x_Project.h" // Device Headerfile and Examples Include File
//
// Function Prototypes
//
void scia_echoback_init(void);
void scia_fifo_init(void);
void scia_xmit(int a);
void scia_msg(char *msg);
//
// Globals
//
uint16_t LoopCount;
uint16_t ErrorCount;
//
// Main
//
void main(void)
{
Uint16 ReceivedChar;
char *msg;
//
// WARNING: Always ensure you call memcpy before running any functions from
// RAM InitSysCtrl includes a call to a RAM based function and without a
// call to memcpy first, the processor will go "into the weeds"
//
#ifdef _FLASH
memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);
#endif
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the f2802x_SysCtrl.c file.
//
InitSysCtrl();
//
// Step 2. Initialize GPIO:
// This example function is found in the f2802x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
//
//InitGpio(); Skipped for this example
//
// For this example, only init the pins for the SCI-A port.
// This function is found in the f2802x_Sci.c file.
//
InitSciaGpio();
//
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
//
DINT;
//
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the f2802x_PieCtrl.c file.
//
InitPieCtrl();
//
// Disable CPU interrupts and clear all CPU interrupt flags
//
IER = 0x0000;
IFR = 0x0000;
//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in f2802x_DefaultIsr.c.
// This function is found in f2802x_PieVect.c.
//
InitPieVectTable();
//
// Step 4. Initialize all the Device Peripherals
// Not required for this example
//
//
// Step 5. User specific code
//
LoopCount = 0;
ErrorCount = 0;
scia_fifo_init(); // Initialize the SCI FIFO
scia_echoback_init(); // Initialize SCI for echoback
msg = "\r\n\n\nHello World!\0";
scia_msg(msg);
msg = "\r\nYou will enter a character, and the DSP will echo it back!\n\0";
scia_msg(msg);
for(;;)
{
msg = "\r\nEnter a character: \0";
scia_msg(msg);
//
// Wait for inc character
//
while(SciaRegs.SCIFFTX.bit.TXFFST !=1)
{
//
// wait for XRDY =1 for empty state
//
}
//
// Get character
//
ReceivedChar = SciaRegs.SCIRXBUF.all;
//
// Echo character back
//
msg = " You sent: \0";
scia_msg(msg);
scia_xmit(ReceivedChar);
LoopCount++;
}
}
//
// scia_echoback_init - Test 1,SCIA DLB, 8-bit word, baud rate 0x000F, default
// 1 STOP bit, no parity
//
void
scia_echoback_init()
{
//
// Note: Clocks were turned on to the SCIA peripheral
// in the InitSysCtrl() function
//
//
// 1 stop bit, No loopback, No parity, 8 char bits, async mode,
// idle-line protocol
//
SciaRegs.SCICCR.all =0x0007;
//
// enable TX, RX, internal SCICLK, Disable RX ERR, SLEEP, TXWAKE
//
SciaRegs.SCICTL1.all =0x0003;
SciaRegs.SCICTL2.all =0x0003;
SciaRegs.SCICTL2.bit.TXINTENA =1;
SciaRegs.SCICTL2.bit.RXBKINTENA =1;
//
// SCI BRR = LSPCLK/(SCI BAUDx8) - 1
//
#if (CPU_FRQ_60MHZ)
SciaRegs.SCIHBAUD = 0x0000; // 9600 baud @LSPCLK = 15MHz(60 MHz SYSCLK)
SciaRegs.SCILBAUD = 0x00C2;
#elif (CPU_FRQ_50MHZ)
SciaRegs.SCIHBAUD = 0x0000; // 9600 baud @LSPCLK = 12.5 MHz(50 MHz SYSCLK)
SciaRegs.SCILBAUD = 0x00A1;
#elif (CPU_FRQ_40MHZ)
SciaRegs.SCIHBAUD = 0x0000; // 9600 baud @LSPCLK = 10MHz(40 MHz SYSCLK)
SciaRegs.SCILBAUD = 0x0081;
#endif
SciaRegs.SCICTL1.all =0x0023; // Relinquish SCI from Reset
}
//
// scia_xmit - Transmit a character from the SCI
//
void
scia_xmit(int a)
{
while (SciaRegs.SCIFFTX.bit.TXFFST != 0)
{
}
SciaRegs.SCITXBUF=a;
}
//
// scia_msg -
//
void
scia_msg(char * msg)
{
int i;
i = 0;
while(msg[i] != '\0')
{
scia_xmit(msg[i]);
i++;
}
}
//
// scia_fifo_init - Initialize the SCI FIFO
//
void
scia_fifo_init()
{
SciaRegs.SCIFFTX.all=0xE040;
SciaRegs.SCIFFRX.all=0x2044;
SciaRegs.SCIFFCT.all=0x0;
}
//
// End of File
//
Hello,
E:\ti\motorware\motorware_1_01_00_18\sw\solutions\instaspin_foc\boards\boostxldrv8305_revA\f28x\f2802xF\projects\ccs\proj_lab11a
I use official serial port routines, Example_2802xScia_FFDLB.c ， The code is as follows
I found that only 5 characters can be printed. Assuming 123456 is sent, only 13456 will be received. After reading the manual, can only 4 bytes be printed at a time? Or are there other settings available
