Hai
I am doing project on modbus communication.I have a small doubt in this.
My objective is i want to monitor the slave device(socomec energy meter)data from my microcontroller for this i written the code like this but i am not getting any data reply back.please suggest me i am new with modbus communication whre i did wrong.
#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "driverlib/debug.h"
#include "driverlib/fpu.h"
#include "driverlib/gpio.h"
#include "driverlib/interrupt.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/rom.h"
#include "grlib/grlib.h"
#include "drivers/cfal96x64x16.h"
#include "driverlib/pin_map.h"
void tx(unsigned char);
void clearbuff(void);
void data(unsigned char *);
void Crc_cal(void);
unsigned char m[150],mess1[10];
unsigned char mess[10];
//unsigned char message[]={'0x05','0x03','0xc5','0x52','0x00','0x02','0x58','0x92','\0'};
//const char message[]={&H05,&H03,&Hc5,&H52,&H00,&H02,&H58,&H92};
unsigned int low_byte,high_byte;
int count=0,count10=0,count1=0;
int j;
unsigned short int crc,this_byte,i,shift,lastbit;
void
UARTIntHandler(void)
{
++count10;
SysCtlDelay(10000);
uint32_t ui32Status;
//
// Get the interrrupt status.
//
ui32Status = ROM_UARTIntStatus(UART0_BASE, true);
//
// Clear the asserted interrupts.
//
ROM_UARTIntClear(UART0_BASE, ui32Status);
//
// Loop while there are characters in the receive FIFO.
//
while(ROM_UARTCharsAvail(UART0_BASE))
{
/* while(!ADCIntStatus(ADC0_BASE, 1, false))
{
}*/
m[count]=ROM_UARTCharGetNonBlocking(UART0_BASE);
// ROM_UARTCharPutNonBlocking(UART0_BASE,m[count]);
count++;
if(count>=100)
{
//clearbuff();
// if(count==100)
count=0;
// clearbuff((unsigned char *)m);
}
}
// count10=0;
}
int
main(void)
{
//tRectangle sRect;
//tContext sContext;
//
// Enable lazy stacking for interrupt handlers. This allows floating-point
// instructions to be used within interrupt handlers, but at the expense of
// extra stack usage.
//
ROM_FPULazyStackingEnable();
//
// Set the clocking to run directly from the crystal.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(), 9600,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
UARTClockSourceSet(UART0_BASE, UART_CLOCK_PIOSC);
// UARTStdioConfig(0, 115200, 16000000);
UARTFIFOEnable(UART0_BASE);
UARTFIFOLevelSet(UART0_BASE, UART_FIFO_TX1_8, UART_FIFO_RX1_8);
UARTTxIntModeSet(UART0_BASE, UART_TXINT_MODE_FIFO);
// ROM_UARTIntDisable(UART0_BASE, UART_INT_TX);
ROM_UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
ROM_IntEnable(INT_UART0);
UARTEnable(UART0_BASE);
while(1)
{
data("0x05");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0x03");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0xC5");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0x52");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0x00");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0x02");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0x58");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
data("0x92");
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
SysCtlDelay(SysCtlClockGet() / 12);
}
}
void data(unsigned char *z)
{
while(*z!='\0')
{
ROM_UARTCharPutNonBlocking(UART0_BASE, *z++);
}
}
