📄 comm.c
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#include "modbus.h"
#include "p18f87j10.h"
#include "public.h"
#include "dwt_lcd_config.h"
#include "eeprom.h"
//modbus
uchar ex_modbus_start_timer; //定时标识
uchar ex_modbus_timer_count; //定时器
uchar ex_modbus_r_count; //接收计数器
uchar ex_modbus_r_head_flag; //接收帧头
uchar modbus_packet_len; //接收报文总长度
uchar rs485_rx1_buf[MODBUS_RS485_RX_BUF_LEN];
uchar rs485_tx1_buf[MODBUS_RS485_TX_BUF_LEN];
uchar result_485[MODBUS_FUN_BIT_LEN];
uchar modbus_proc_flag; //帧处理标志
uchar modbus_r_over; //接收完毕
//ifr
uchar ex_ifr_r_count;//接收计数器
uchar ex_ifr_start_timer;//定时标识
uchar ex_ifr_timer_count;//定时器
uchar ex_ifr_r_head_flag;//接收帧头
uchar ex_ifr_timer_snd_flag;//定时发送标志
int ex_ifr_timer_snd_count;//定时发送计数器
float ifr_To[SENSORS_NUM]; //6路温度
uchar ifr_s_no;//发送通道号
uchar rs485_rx_buf[12];
uchar rs485_tx_buf[11];
//
uchar ex_key_start_timer;//定时标识
uint ex_key_timer_count;//定时器
//* CRC 高位字节值表 */
const rom uchar auchCRCHi[] =
{
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40
};
//* CRC低位字节值表*/
const rom uchar auchCRCLo[] =
{
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
0x41, 0x81, 0x80, 0x40
};
//-------------------------------------------------------------------------
//
//-------------------------------------------------------------------------
void Ifr_uart_init(void)
{
TXSTA1 = 0x40; //9位发送，8异步模式，高速，BRGH=0，SYNC=0
RCSTA1 = 0xc0;
BAUDCON1 = 0x00; //BRG16=0； 9600KBPS
BAUDCON1bits.WUE = 1;
TRISCbits.TRISC6 = 0;
TRISCbits.TRISC7 = 1;
TRISCbits.TRISC3 = 0;
TRISCbits.TRISC2 = 0;
TRISJbits.TRISJ7 = 0;
TRISJbits.TRISJ6 = 0;
SPBRG1 = 17; //17/9600/11.0592
PIR1 = 0x00;
PIE1bits.RC1IE = 1;
PIE1bits.TX1IE = 0;
IPR1bits.RC1IP = 1;
RCSTA1bits.CREN = 1;
TXSTA1bits.TXEN = 1;
}
//-------------------------------------------------------------------------
//
//-------------------------------------------------------------------------
void Modus_uart_init(void)
{
TXSTA2 = 0x00;
RCSTA2 = 0x80;
BAUDCON2 = 0x00;
BAUDCON2bits.WUE = 1;
TRISGbits.TRISG1 = 0;
TRISGbits.TRISG2 = 1;
switch (eepara.speed)
{
case 12:
SPBRG2 = 143;
break;
case 24:
SPBRG2 = 71;
break;
case 48:
SPBRG2 = 35;
break;
case 96:
SPBRG2 = 17;
break;
default:
SPBRG2 = 35;
break;
}
//SPBRG2 = eepara.speed; //103 143/1200/11.0592
PIR3 = 0x00;
PIE3bits.RC2IE = 1;
PIE3bits.TX2IE = 0;
IPR3bits.RC2IP = 1;
//RCSTA2bits.SREN=1;
RCSTA2bits.CREN = 1;
TXSTA2bits.TXEN = 1;
}
unsigned char CRC16(unsigned char *puchMsg, unsigned short usDataLen)
//unsigned char *puchMsg ; //* 要进行CRC校验的消息 */
//unsigned short usDataLen ; //* 消息中字节数 */
{
unsigned char uchCRCHi = 0xFF; //* 高CRC字节初始化 */
unsigned char uchCRCLo = 0xFF; //* 低CRC 字节初始化 */
unsigned int uIndex; //* CRC循环中的索引 */
while (usDataLen--)
//* 传输消息缓冲区 */
{
uIndex = uchCRCHi ^ *puchMsg++; //* 计算CRC */
uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
uchCRCLo = auchCRCLo[uIndex];
}
return (uchCRCLo);
}
//-------------------------------------------------------------------------
//
//-------------------------------------------------------------------------
unsigned char CRC16_1(unsigned char *puchMsg1, unsigned short usDataLen1)
//unsigned char *puchMsg1 ; //* 要进行CRC校验的消息 */
//unsigned short usDataLen1 ; //* 消息中字节数 */
{
unsigned char uchCRCHi1 = 0xFF; //* 高CRC字节初始化 */
unsigned char uchCRCLo1 = 0xFF; //* 低CRC 字节初始化 */
unsigned uIndex1; //* CRC循环中的索引 */
while (usDataLen1--)
//* 传输消息缓冲区 */
{
uIndex1 = uchCRCHi1 ^ *puchMsg1++; //* 计算CRC */
uchCRCHi1 = uchCRCLo1 ^ auchCRCHi[uIndex1];
uchCRCLo1 = auchCRCLo[uIndex1];
}
return (uchCRCHi1);
}
void Modbus_Init(void)
{
uchar i;
TRISGbits.TRISG0 = IO_OUTPUT;
MODBUS_RS485_EN = RS_485_RCV;
Modus_uart_init();
ex_modbus_start_timer = 0;
ex_modbus_timer_count = 0;
ex_modbus_r_count = 0;
ex_modbus_r_head_flag = 0;
modbus_packet_len = 0;
for( i =0; i < MODBUS_FUN_BIT_LEN; i++)
result_485[i] = 0;
modbus_proc_flag = 0;
modbus_r_over = 0;
}
//-------------------------------------------------------------------------
//
//-------------------------------------------------------------------------
void Modbus_Packetpro(void)
{
int i, j, j1, tmr;
unsigned char crc_h, crc_l;
//new add
int b_len, p_addr;
uint tmp_int;
uchar tmp_char, tmp_exit, tmp_speed;
uchar count_485; //报文发送计数器
if ((modbus_proc_flag) && (ex_modbus_r_count != 0))
//new add end
{
ex_modbus_start_timer = 1;
ex_modbus_timer_count = 0;
crc_l = CRC16(rs485_rx1_buf, modbus_packet_len - 2);
crc_h = CRC16_1(rs485_rx1_buf, modbus_packet_len - 2);
p_addr = rs485_rx1_buf[L_ADDR_H] *256+rs485_rx1_buf[L_ADDR_L];
if ((crc_h == rs485_rx1_buf[modbus_packet_len - 2]) && (crc_l ==
rs485_rx1_buf[modbus_packet_len - 1]))
{
count_485 = 0;
tmp_speed = 0;
switch (rs485_rx1_buf[1])
{
//=====================FUN_01===============================
// case FUN_01:
// b_len = rs485_rx1_buf[L_NUM_H] *256+rs485_rx1_buf[L_NUM_L];
// //
// if ((b_len > FUN_01_NUM) || ((p_addr + b_len) > FUN_01_NUM))
// {
// //长度不符合规范
// rs485_tx1_buf[0] = rs485_rx1_buf[0]; //ADDR
// rs485_tx1_buf[1] = rs485_rx1_buf[1] | 0x80; //FUN
// rs485_tx1_buf[2] = MODBUS_ERR_NOSUP;
// count_485 = 3;
// break;
// }
// rs485_tx1_buf[0] = rs485_rx1_buf[0]; //ADDR
// rs485_tx1_buf[1] = FUN_01; //FUN
// rs485_tx1_buf[2] = (b_len + 7) / 8;
// result_485[0] = 0;
// for (i = b_len, j = 8, tmr = - 1; i > 0; i--, j++)
// {
// if (((i % 8) == 0) || (i == b_len))
// {
// tmr++;
// result_485[tmr] = 0;
// }
// switch (i + p_addr - 1)
// {
// case FUN_01_JA:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = SW_INVALID;
// if (!JA)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //end
// case FUN_01_FA:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = SW_INVALID;
// if (!FA)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //
// case FUN_01_JB:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = SW_INVALID;
// if (!JB)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// //
// break; //
// case FUN_01_FB:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = SW_INVALID;
// if (!FB)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //
// default:
// break;
// }
// }
// for (i = 0; i <= tmr; i++)
// {
// rs485_tx1_buf[i + 3] = result_485[tmr - i]; //
// }
// count_485 = 3+tmr + 1; //
// break; //
//=============================FUN_02================================
// case FUN_02:
// b_len = rs485_rx1_buf[L_NUM_H] *256+rs485_rx1_buf[L_NUM_L];
// //
// if ((b_len > FUN_02_NUM) || ((p_addr + b_len) > FUN_02_NUM))
// {
// //长度不符合规范
// rs485_tx1_buf[0] = rs485_rx1_buf[0]; //ADDR
// rs485_tx1_buf[1] = rs485_rx1_buf[1] | 0x80; //FUN
// rs485_tx1_buf[2] = MODBUS_ERR_NOSUP;
// count_485 = 3;
// break;
// }
// rs485_tx1_buf[0] = rs485_rx1_buf[0]; //
// rs485_tx1_buf[1] = FUN_02; //
// rs485_tx1_buf[2] = (b_len + 7) / 8;
// result_485[0] = 0;
// for (i = b_len, j = 8, tmr = - 1; i > 0; i--, j++)
// {
// if (((i % 8) == 0) || (i == b_len))
// {
// tmr++;
// result_485[tmr] = 0;
// }
// switch (i + p_addr - 1)
// {
// case FUN_02_DUANLUQI_CLOSE:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = ST_INVALID;
// if (!DUANLUQI_CLOSE)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //
// case FUN_02_DUANLUQI_OPEN:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = ST_INVALID;
// if (!DUANLUQI_OPEN)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //
// case FUN_02_SHOUCHE_WORK:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = ST_INVALID;
// if (!SHOUCHE_WORK)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //
// case FUN_02_SHOUCHE_TEST:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = ST_INVALID;
// if (!SHOUCHE_TEST)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// break; //
// case FUN_02_CHUNENG:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = ST_INVALID;
// if (!CHUNENG)
// {
// tmp_char = SW_VALID;
// }
// result_485[tmr] += tmp_char;
// //
// break; //
// case FUN_02_DIDAO:
// result_485[tmr] = result_485[tmr] << 1; //
// tmp_char = ST_INVALID;
// if (!DIDAO)
// {
// tmp_char = SW_VALID;
// }
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