Tool/software: Code Composer Studio
Hi..
The last time i ask a question on this forum , i was think that my program is going well. But, it wasn't. I try o send data from Arduino Uno to TI through SCI-A. I hope that the serial monitor of TI (i'm using PuTTY) can show the arduino data. If I use the default program, specially this part :
void
scia_msg(char * msg)
{
int i;
i = 0;
while (msg[i] != '\0')
{
scia_xmit(msg[i]);
i++;
}
}
the PuTTY can show the main MESSAGE (Hello World,etc) , but the data that i send from arduino is not sent completely. For example, if i send "123456", PuTTY only shows :
Hello World
You will enter a character, and the DSP will echo it back!
Enter a charachter : Data A': 1
Enter a charachter : Data A': 0
Enter a charachter : Data A':
Enter a charachter : Data A':
Enter a charachter : Data A':
Enter a charachter :
But, if i change the program like this :
void
scia_msg(char * msg)
{
int i;
i = 0;
while (msg[i] =='#') //because i'm using '#' for enter operation in arduino program
{
scia_xmit(msg[i]);
i++;
}
}
serial monitor of TI (PuTTY) can shows the data that i send from arduino completely. But the main MESSAGE (Hello World, etc) of CCS program is not show on the PuTTY.
The point is, i wanna show the main MESSAGE (Hello World, etc) and the data that i send from arduino (keypad) completely.
Here my CCS code (I'm using sci_echoback example code):
//###########################################################################
//
// FILE: Example_2806xScia_Echoback.c
//
// TITLE: SCI Echo Back Example
//
//! \addtogroup f2806x_example_list
//! <h1>SCI Echo Back(sci_echoback)</h1>
//!
//! This test receives and echo-backs data through the SCI-A port.
//!
//! 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.
//!
//! \b Running \b the \b Application
//! -# Configure hyperterminal:
//! Use the included hyperterminal configuration file SCI_96.ht.
//! To load this configuration in hyperterminal
//! -# Open hyperterminal
//! -# Go to file->open
//! -# Browse to the location of the project and
//! select the SCI_96.ht file.
//! -# 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.
//! -# Connect hyperterminal Call->Call
//! and then start the 2806x SCI echoback program execution.
//! -# The program will print out a greeting and then ask you to
//! enter a character which it will echo back to hyperterminal.
//!
//! \note If you are unable to open the .ht file, you can create
//! a new one with the following settings
//! - Find correct COM port
//! - Bits per second = 9600
//! - Date Bits = 8
//! - Parity = None
//! - Stop Bits = 1
//! - Hardware Control = None
//!
//! \b Watch \b Variables \n
//! - \b LoopCount, for the number of characters sent
//! - ErrorCount
//!
//! \b External \b Connections \n
//! Connect the SCI-A port to a PC via a transceiver and cable.
//! - GPIO28 is SCI_A-RXD (Connect to Pin3, PC-TX, of serial DB9 cable)
//! - GPIO29 is SCI_A-TXD (Connect to Pin2, PC-RX, of serial DB9 cable)
//
//###########################################################################
// $TI Release: F2806x Support Library v2.04.00.00 $
// $Release Date: Tue Jun 26 03:13:59 CDT 2018 $
// $Copyright:
// Copyright (C) 2009-2018 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 LoopCount;
Uint16 ErrorCount;
Uint16 ReceivedChar;
//
// Main
//
void main(void)
{
char *msg;
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2806x_SysCtrl.c file.
//
InitSysCtrl();
//
// Step 2. Initalize GPIO:
// This example function is found in the F2806x_Gpio.c file and
// illustrates how to set the GPIO to its 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 F2806x_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 F2806x_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 F2806x_DefaultIsr.c.
// This function is found in F2806x_PieVect.c.
//
InitPieVectTable();
//
// Step 4. Initialize all the Device Peripherals:
// This function is found in F2806x_InitPeripherals.c
//
//InitPeripherals(); // Not required for this example
//
// Step 5. User specific code
//
LoopCount = 0;
ErrorCount = 0;
scia_fifo_init(); // Initialize the SCI FIFO
scia_echoback_init(); // Initalize 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.SCIFFRX.bit.RXFFST < 1)
{
//
// wait for XRDY =1 for empty state
//
}
//
// Get character
//
ReceivedChar = SciaRegs.SCIRXBUF.all;
//
// Echo character back
//
msg = " Data A': \0";
scia_msg(msg);
scia_xmit(ReceivedChar);
LoopCount++;
}
}
//
// scia_echoback_init - Test 1,SCIA DLB, 8-bit word, baud rate 0x0103,
// 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.bit.TXINTENA = 1;
SciaRegs.SCICTL2.bit.RXBKINTENA = 1;
//
// 9600 baud @LSPCLK = 22.5MHz (90 MHz SYSCLK)
//
SciaRegs.SCIHBAUD =0x0001;
SciaRegs.SCILBAUD =0x0024;
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 - Initalize the SCI FIFO
//
void
scia_fifo_init()
{
SciaRegs.SCIFFTX.all=0xE040;
SciaRegs.SCIFFRX.all=0x2044;
SciaRegs.SCIFFCT.all=0x0;
}
void
Scia_gpio()
{
#if DSP28_SCIA
InitSciaGpio();
#endif // endif DSP28_SCIA
EALLOW;
/* Enable internal pull-up for the selected pins */
// Pull-ups can be enabled or disabled disabled by the user.
// This will enable the pullups for the specified pins.
GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0; // Enable pull-up for GPIO28 (SCIRXDA)
// GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; // Enable pull-up for GPIO7 (SCIRXDA)
GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0; // Enable pull-up for GPIO29 (SCITXDA)
// GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0; // Enable pull-up for GPIO12 (SCITXDA)
/* Set qualification for selected pins to asynch only */
// Inputs are synchronized to SYSCLKOUT by default.
// This will select asynch (no qualification) for the selected pins.
GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3; // Asynch input GPIO28 (SCIRXDA)
// GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 3; // Asynch input GPIO7 (SCIRXDA)
/* Configure SCI-A pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be SCI functional pins.
GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 1; // Configure GPIO28 for SCIRXDA operation
// GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 2; // Configure GPIO7 for SCIRXDA operation
GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 1; // Configure GPIO29 for SCITXDA operation
// GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 2; // Configure GPIO12 for SCITXDA operation
EDIS;
}
//#endif
//===========================================================================
// No more.
//===========================================================================
//
// End of File
//
Anyone, do you know something about my problem?
- Amir
