PIC24EP512GP806 hangs some time in startup

[n_vikranth]

system getting hangs at start up, if i change the initialize part it works but some time it gets hangs,kindly check my initialize part mentioned below and arrange the initialize part in order and also guide for required delay for all initializations.

void Init_Peripherals()
{
PLLPRE_0_bit = 0;
PLLPRE_1_bit = 0;
PLLPRE_2_bit = 0;
PLLPRE_3_bit = 0;
PLLPRE_4_bit = 0;
PLLFBD = 38; // PLL multiplier M=38
PLLPOST_0_bit = 0;
PLLPOST_1_bit = 0;


ANSELB = 0x00; // Convert all I/O pins to digital
ANSELC = 0x00;
ANSELD = 0x00;
ANSELE = 0x20;
ANSELG = 0x00;
TRISB = 0xC0C0;
TRISC = 0x00;
TRISD = 0x00;
TRISE = 0x20;
TRISF = 0x00;
TRISG = 0x00;
I2C1_Init(100000);//(121000); //Inicializar Bus I2C a 100kHz //I2C 1
PPS_Mapping_NoLock(102, _INPUT, _U1RX); // For Modbus Interfacing
PPS_Mapping_NoLock(99, _OUTPUT, _U1TX); // For Modbus Interfacing
PPS_Mapping_NoLock(96, _INPUT, _U2RX); // For USB Interfacing
PPS_Mapping_NoLock(97, _OUTPUT, _U2TX); // For USB Interfacing
PPS_Mapping(82, _OUTPUT, _SCK1OUT);
PPS_Mapping(84, _OUTPUT, _SDO1);
PPS_Mapping(83 ,_INPUT, _SDI1);
SPI1_Init_Advanced(_SPI_MASTER, _SPI_8_BIT, _SPI_PRESCALE_SEC_2, _SPI_PRESCALE_PRI_1, _SPI_SS_DISABLE, _SPI_DATA_SAMPLE_END, _SPI_CLK_IDLE_LOW, _SPI_IDLE_2_ACTIVE);
SerialFlash_init();
SerialFlash_WriteEnable(); //SPI 1
//IPC0 = IPC0 | 0x1000;
//IPC1 = IPC1 | 0x2000;
delay_ms(200);
}

void Init_Peripherals2()
{
ADC1_Init_Advanced(_ADC_12bit,_ADC_INTERNAL_REF);//ADC 1
SEL_A_Direction = 0;
SEL_B_Direction = 0;
PPS_Mapping(87, _OUTPUT, _OC1); // RG0 & RG1 as outputs
PWM_Init(5000 , 1, 1, 3); //PWM 1
PWM_Start(1);
PPS_Mapping(67, _OUTPUT, _SCK3OUT);
PPS_Mapping(65, _INPUT, _SDI3);
PPS_Mapping(66, _OUTPUT, _SDO3); // SPI configuration for Ethernet Controller
SPI3_Init_Advanced(_SPI_MASTER, _SPI_8_BIT, _SPI_PRESCALE_SEC_1, _SPI_PRESCALE_PRI_4, _SPI_SS_DISABLE, _SPI_DATA_SAMPLE_MIDDLE, _SPI_CLK_IDLE_LOW, _SPI_IDLE_2_ACTIVE);
SPI_Rd_Ptr = SPI3_Read;
SPI_Ethernet_Init(myMacAddr, myIpAddr, Spi_Ethernet_FULLDUPLEX) ;
SPI_Ethernet_confNetwork(ipMask, gwIpAddr, dnsIpAddr) ; //SPI 3
U1RXIE_bit = 1;
UART2_Init(9600); //UART 2
Modbus_init(); //UART 1
RTC_Init(); //I2C 2
InitTimer1(); //Timer 1
InitTimer2(); //Timer 2
delay_ms(50);
}

void Modbus_init()
{
/*U1MODEbits.STSEL = 0;// 1-stop bit
U1MODEbits.PDSEL = 0;// No Parity, 8-data bits
U1MODEbits.ABAUD = 0;// Auto-Baud disabled
U1MODEbits.BRGH = 1;// Standard-Speed mode */
//UART1_Init_Advanced(9600, 1, 0, 1);
UART1_Init(set_buadrate[Modbus_Data_Array[22]]);
U1STAbits.URXISEL = 0;// Interrupt after one RX character is received;
U1MODEbits.UARTEN = 1;// Enable UART
IFS0bits.U1RXIF = 0;// Clear RX Interrupt flag
IEC0bits.U1RXIE = 1; //Enable UART RX interrupt
//PC_ID=Modbus_Data_Array[21];
LATF2_bit = 0;
}

and also check image attached for configuration settings bits, i have doubt in configuration settings also.

[filip]

Hi,

I believe you have been answered on the other topic regarding the same issue.

Regards,
Filip.