Erick / Mbed 2 deprecated ICE_BLE_TEST

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Dependencies:   NaturalTinyShell_ice libmDot-12Sept mbed-rtos mbed

Fork of ICE by Erick

src/ModbusMaster/ModbusMaster.cpp@31:4b1587034318, 2016-09-08 (annotated)

Committer:
davidjhoward
Date:
Thu Sep 08 21:15:11 2016 +0000
Revision:
31:4b1587034318
Parent:
23:03bf3d549002
Child:
39:9287c7d59016
file receiving capabilities in CloudDataHandler

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jmarkel44 0:65cfa4873284 1 /******************************************************************************
davidjhoward 4:c35db3946fd8 2 *
jmarkel44 0:65cfa4873284 3 * File: ModbusMaster.cpp
jmarkel44 0:65cfa4873284 4 * Desciption: source for the ICE Modbus Master
jmarkel44 0:65cfa4873284 5 *
jmarkel44 0:65cfa4873284 6 *****************************************************************************/
jmarkel44 0:65cfa4873284 7 #include "global.h"
jmarkel44 0:65cfa4873284 8 #include <stdio.h>
davidjhoward 31:4b1587034318 9 #include "MTSLog.h"
jmarkel44 0:65cfa4873284 10 #include "BLEDataHandler.h"
davidjhoward 4:c35db3946fd8 11 #include "ModbusMaster.h"
davidjhoward 8:abe51ae5ef8b 12 #include "MbedJSONValue.h"
jmarkel44 0:65cfa4873284 13
jmarkel44 0:65cfa4873284 14 /*****************************************************************************
jmarkel44 0:65cfa4873284 15 * Function: ModbusMaster
jmarkel44 0:65cfa4873284 16 * Description: entry point for the Modbus Master
jmarkel44 0:65cfa4873284 17 *
jmarkel44 0:65cfa4873284 18 * @param (IN) args (user-defined arguments)
jmarkel44 0:65cfa4873284 19 * @return none
jmarkel44 0:65cfa4873284 20 *****************************************************************************/
davidjhoward 7:c0c03193612d 21
jmarkel44 0:65cfa4873284 22 void ModbusMaster(void const *args)
jmarkel44 0:65cfa4873284 23 {
davidjhoward 31:4b1587034318 24 logInfo("%s ModbusMaster has started...", __func__);
davidjhoward 8:abe51ae5ef8b 25 char scratch_buf[1024];
davidjhoward 15:a6ee32969e8e 26 bool status;
davidjhoward 8:abe51ae5ef8b 27 MbedJSONValue json_value;
jmarkel44 0:65cfa4873284 28
davidjhoward 9:ef0ca2f8a8a6 29 // configure modbus registers based in all files that start with "input"
davidjhoward 8:abe51ae5ef8b 30 std::vector<mDot::mdot_file> file_list = GLOBAL_mdot->listUserFiles();
davidjhoward 8:abe51ae5ef8b 31 for (std::vector<mDot::mdot_file>::iterator i = file_list.begin(); i != file_list.end(); ++i) {
davidjhoward 8:abe51ae5ef8b 32 if( strncmp( i->name, "input", strlen("input")) == 0 ) {
davidjhoward 8:abe51ae5ef8b 33
davidjhoward 8:abe51ae5ef8b 34 printf("\r(%d)FOUND INPUT FILE: %s\n", __LINE__, i->name);
davidjhoward 8:abe51ae5ef8b 35
davidjhoward 8:abe51ae5ef8b 36 bool status = GLOBAL_mdot->readUserFile(i->name, (void *)scratch_buf, 1024);
davidjhoward 8:abe51ae5ef8b 37 if( status != true ) {
davidjhoward 8:abe51ae5ef8b 38 printf("\r(%d)read file failed, status=%d\n", __LINE__, status);
davidjhoward 8:abe51ae5ef8b 39 } else {
davidjhoward 8:abe51ae5ef8b 40 printf("\r(%d)Read File SUCCESS: %s\n", __LINE__, scratch_buf );
davidjhoward 8:abe51ae5ef8b 41 }
davidjhoward 8:abe51ae5ef8b 42
davidjhoward 8:abe51ae5ef8b 43 parse( json_value, scratch_buf );
davidjhoward 8:abe51ae5ef8b 44
davidjhoward 8:abe51ae5ef8b 45 std::string id = json_value["id"].get<std::string>().c_str();
davidjhoward 9:ef0ca2f8a8a6 46 ModbusRegisterMap[id].name = json_value["name"].get<std::string>().c_str();
davidjhoward 9:ef0ca2f8a8a6 47 ModbusRegisterMap[id].units = json_value["units"].get<std::string>().c_str();
davidjhoward 9:ef0ca2f8a8a6 48 ModbusRegisterMap[id].min = json_value["min"].get<double>();
davidjhoward 9:ef0ca2f8a8a6 49 ModbusRegisterMap[id].max = json_value["max"].get<double>();
davidjhoward 9:ef0ca2f8a8a6 50 ModbusRegisterMap[id].node = json_value["node"].get<int>();
davidjhoward 9:ef0ca2f8a8a6 51 ModbusRegisterMap[id].reg = json_value["reg"].get<int>();
davidjhoward 9:ef0ca2f8a8a6 52 ModbusRegisterMap[id].rtype = json_value["rtype"].get<int>();
davidjhoward 9:ef0ca2f8a8a6 53 ModbusRegisterMap[id].type = json_value["type"].get<int>();
davidjhoward 15:a6ee32969e8e 54 ModbusRegisterMap[id].size = json_value["size"].get<int>();
davidjhoward 15:a6ee32969e8e 55 ModbusRegisterMap[id].order = json_value["order"].get<int>();
davidjhoward 9:ef0ca2f8a8a6 56 ModbusRegisterMap[id].fmt = json_value["fmt"].get<std::string>().c_str();
davidjhoward 8:abe51ae5ef8b 57 }
davidjhoward 7:c0c03193612d 58 }
davidjhoward 7:c0c03193612d 59
davidjhoward 9:ef0ca2f8a8a6 60 // read modbus registers that have been configured.
jmarkel44 0:65cfa4873284 61 while ( true ) {
davidjhoward 9:ef0ca2f8a8a6 62
davidjhoward 9:ef0ca2f8a8a6 63 std::map<std::string, ModbusRegister>::iterator iter;
davidjhoward 9:ef0ca2f8a8a6 64 for (iter = ModbusRegisterMap.begin(); iter != ModbusRegisterMap.end(); ++iter) {
davidjhoward 15:a6ee32969e8e 65 printf("\rReading node=%d, reg=%d, size=%d, order=%d\n", iter->second.node, iter->second.reg, iter->second.size, iter->second.order );
davidjhoward 15:a6ee32969e8e 66 SendModbusCommand(iter->second.node, iter->second.reg, iter->second.size);
davidjhoward 15:a6ee32969e8e 67 osDelay(30);
davidjhoward 15:a6ee32969e8e 68
davidjhoward 15:a6ee32969e8e 69 switch( iter->second.type ) {
davidjhoward 15:a6ee32969e8e 70 case TYPE_32BIT_FLOAT:
davidjhoward 15:a6ee32969e8e 71 float float_value;
davidjhoward 15:a6ee32969e8e 72 status = ReadModbus_32bit_float( &float_value, iter->second.order );
davidjhoward 31:4b1587034318 73 if( status == true ) {
davidjhoward 15:a6ee32969e8e 74 ModbusRegisterMap[iter->first].float_value = float_value;
davidjhoward 15:a6ee32969e8e 75 }
davidjhoward 15:a6ee32969e8e 76 break;
davidjhoward 15:a6ee32969e8e 77 case TYPE_32BIT_INT:
davidjhoward 15:a6ee32969e8e 78 break;
davidjhoward 15:a6ee32969e8e 79 case TYPE_32BIT_UINT:
davidjhoward 15:a6ee32969e8e 80 break;
davidjhoward 15:a6ee32969e8e 81 case TYPE_16BIT_INT:
davidjhoward 15:a6ee32969e8e 82 break;
davidjhoward 15:a6ee32969e8e 83 case TYPE_16BIT_UINT:
davidjhoward 15:a6ee32969e8e 84 break;
davidjhoward 15:a6ee32969e8e 85 default:
davidjhoward 15:a6ee32969e8e 86 break;
davidjhoward 15:a6ee32969e8e 87 }
davidjhoward 4:c35db3946fd8 88 }
davidjhoward 31:4b1587034318 89
davidjhoward 31:4b1587034318 90 logInfo("Checking for MAIL");
davidjhoward 31:4b1587034318 91 osEvent evt = ModbusMasterMailBox.get(50);
davidjhoward 31:4b1587034318 92 if (evt.status == osEventMail) {
davidjhoward 31:4b1587034318 93 Message_t *mail = (Message_t*)evt.value.p;
davidjhoward 31:4b1587034318 94 logInfo("Mail Received: Action: %d, New Input File: %s", mail->action, mail->controlFile);
davidjhoward 31:4b1587034318 95 ModbusMasterMailBox.free(mail);
davidjhoward 31:4b1587034318 96 } else {
davidjhoward 31:4b1587034318 97 logInfo("No Mail");
davidjhoward 31:4b1587034318 98 }
davidjhoward 31:4b1587034318 99 osDelay(1000);
jmarkel44 0:65cfa4873284 100 }
davidjhoward 4:c35db3946fd8 101 }
davidjhoward 4:c35db3946fd8 102
davidjhoward 4:c35db3946fd8 103
davidjhoward 4:c35db3946fd8 104 volatile char modbus_buffer_char;
davidjhoward 4:c35db3946fd8 105 volatile bool modbus_interrupt_complete = false;
davidjhoward 4:c35db3946fd8 106
davidjhoward 4:c35db3946fd8 107 uint8_t modbus_input_buffer[SIZE_MB_BUFFER];// 1byte address + 1 byte function +1 byte number of regs + 12 bytes of data + 2 bytes for crc response frame from slave
davidjhoward 4:c35db3946fd8 108 volatile uint8_t modbus_input_buffer_counter = 0;
davidjhoward 4:c35db3946fd8 109
davidjhoward 4:c35db3946fd8 110 //Frame crc calucation
davidjhoward 4:c35db3946fd8 111 uint16_t modbus_crc(uint8_t* buf, int len)
davidjhoward 4:c35db3946fd8 112 {
davidjhoward 4:c35db3946fd8 113 uint16_t crc = 0xFFFF;
davidjhoward 4:c35db3946fd8 114
davidjhoward 4:c35db3946fd8 115 for (int pos = 0; pos < len; pos++) {
davidjhoward 4:c35db3946fd8 116 crc ^= (uint16_t)buf[pos]; // XOR byte into least sig. byte of crc
davidjhoward 4:c35db3946fd8 117
davidjhoward 4:c35db3946fd8 118 for (int i = 8; i != 0; i--) {
davidjhoward 4:c35db3946fd8 119 // Loop over each bit
davidjhoward 4:c35db3946fd8 120 if ((crc & 0x0001) != 0) {
davidjhoward 4:c35db3946fd8 121 // If the LSB is set
davidjhoward 4:c35db3946fd8 122 crc >>= 1; // Shift right and XOR 0xA001
davidjhoward 4:c35db3946fd8 123 crc ^= 0xA001;
davidjhoward 4:c35db3946fd8 124 } else // Else LSB is not set
davidjhoward 4:c35db3946fd8 125 crc >>= 1; // Just shift right
davidjhoward 4:c35db3946fd8 126 }
davidjhoward 4:c35db3946fd8 127 }
davidjhoward 4:c35db3946fd8 128 // Note, this number has low and high bytes swapped, so use it accordingly (or swap bytes)
davidjhoward 4:c35db3946fd8 129 return crc;
davidjhoward 4:c35db3946fd8 130 }
davidjhoward 4:c35db3946fd8 131
davidjhoward 4:c35db3946fd8 132 RawSerial modbus(PA_2, PA_3);
davidjhoward 4:c35db3946fd8 133 DigitalOut modbus_enable0(PB_0);
davidjhoward 4:c35db3946fd8 134 DigitalOut modbus_enable1(PB_1);
davidjhoward 4:c35db3946fd8 135
davidjhoward 4:c35db3946fd8 136 void modbus_init( uint16_t baudRate )
davidjhoward 4:c35db3946fd8 137 {
davidjhoward 4:c35db3946fd8 138 modbus.baud(baudRate);
davidjhoward 4:c35db3946fd8 139 modbus.attach(&modbus_recv, RawSerial::RxIrq);
davidjhoward 4:c35db3946fd8 140 }
davidjhoward 4:c35db3946fd8 141
davidjhoward 4:c35db3946fd8 142 //call back when character goes into RX buffer for RS485 modbus
davidjhoward 4:c35db3946fd8 143 void modbus_recv()
davidjhoward 4:c35db3946fd8 144 {
davidjhoward 4:c35db3946fd8 145
davidjhoward 4:c35db3946fd8 146 if (modbus.readable()) {
davidjhoward 4:c35db3946fd8 147 modbus_buffer_char = modbus.getc();
davidjhoward 4:c35db3946fd8 148 if (modbus_input_buffer_counter == 0 && modbus_buffer_char == 0x00) {
davidjhoward 4:c35db3946fd8 149 modbus_input_buffer_counter = 0;
davidjhoward 4:c35db3946fd8 150 } else {
davidjhoward 4:c35db3946fd8 151 modbus_input_buffer[modbus_input_buffer_counter] = modbus_buffer_char;
davidjhoward 4:c35db3946fd8 152 modbus_input_buffer_counter++;
davidjhoward 4:c35db3946fd8 153 }
davidjhoward 4:c35db3946fd8 154 }
davidjhoward 4:c35db3946fd8 155
davidjhoward 4:c35db3946fd8 156 if (modbus_input_buffer_counter > modbus_input_buffer[2] + 4) {
davidjhoward 4:c35db3946fd8 157 modbus_interrupt_complete = true;
davidjhoward 4:c35db3946fd8 158 modbus_input_buffer_counter = 0;
davidjhoward 4:c35db3946fd8 159 }
davidjhoward 4:c35db3946fd8 160 }
davidjhoward 4:c35db3946fd8 161
davidjhoward 4:c35db3946fd8 162 // Read modbus master frame
davidjhoward 9:ef0ca2f8a8a6 163 void SendModbusCommand(uint8_t slave_address, uint16_t firstReg, uint16_t noRegs)
davidjhoward 4:c35db3946fd8 164 {
davidjhoward 4:c35db3946fd8 165 uint8_t L1V[8] = {slave_address, 0x04, 0x00, 0x02, 0x00, 0x02, 0xD1, 0x16};
davidjhoward 4:c35db3946fd8 166
davidjhoward 4:c35db3946fd8 167 L1V[2] = (firstReg >> 8) & 0xFF;
davidjhoward 4:c35db3946fd8 168 L1V[3] = firstReg & 0xFF;
davidjhoward 4:c35db3946fd8 169 L1V[4] = (noRegs >> 8) & 0xFF;
davidjhoward 4:c35db3946fd8 170 L1V[5] = noRegs & 0xFF;
davidjhoward 4:c35db3946fd8 171 L1V[6] = modbus_crc(L1V,6) & 0xFF;
davidjhoward 4:c35db3946fd8 172 L1V[7] = (modbus_crc(L1V,6)>>8) & 0xFF;
davidjhoward 4:c35db3946fd8 173
davidjhoward 4:c35db3946fd8 174 modbus_enable0 = 1;
davidjhoward 4:c35db3946fd8 175 modbus_enable1 = 1;
davidjhoward 4:c35db3946fd8 176
davidjhoward 4:c35db3946fd8 177 for (uint8_t i = 0; i < 8; i++)
davidjhoward 4:c35db3946fd8 178 modbus.putc(L1V[i]);
davidjhoward 4:c35db3946fd8 179
davidjhoward 4:c35db3946fd8 180 wait_ms(2);
davidjhoward 4:c35db3946fd8 181 modbus_enable0 = 0;
davidjhoward 4:c35db3946fd8 182 modbus_enable1 = 0;
davidjhoward 4:c35db3946fd8 183
davidjhoward 4:c35db3946fd8 184 }
davidjhoward 4:c35db3946fd8 185
davidjhoward 4:c35db3946fd8 186 bool mbInterruptComplete()
davidjhoward 4:c35db3946fd8 187 {
davidjhoward 4:c35db3946fd8 188 if (modbus_interrupt_complete) {
davidjhoward 4:c35db3946fd8 189 modbus_interrupt_complete = false;
davidjhoward 4:c35db3946fd8 190 return true;
davidjhoward 4:c35db3946fd8 191 } else {
davidjhoward 4:c35db3946fd8 192 return false;
davidjhoward 4:c35db3946fd8 193 }
davidjhoward 4:c35db3946fd8 194 }
davidjhoward 4:c35db3946fd8 195
davidjhoward 15:a6ee32969e8e 196 bool ReadModbus_32bit_float( float *float_value, int order )
davidjhoward 4:c35db3946fd8 197 {
davidjhoward 15:a6ee32969e8e 198 MR_REGISTER_32_BIT_FLOAT value;
davidjhoward 31:4b1587034318 199
davidjhoward 4:c35db3946fd8 200 if (mbInterruptComplete() != true ) {
davidjhoward 4:c35db3946fd8 201 return false;
davidjhoward 4:c35db3946fd8 202 }
davidjhoward 4:c35db3946fd8 203
davidjhoward 15:a6ee32969e8e 204 switch( order ) {
davidjhoward 31:4b1587034318 205 case BigEndian:
davidjhoward 15:a6ee32969e8e 206 value.b.lo_lo = modbus_input_buffer[6];
davidjhoward 15:a6ee32969e8e 207 value.b.lo_hi = modbus_input_buffer[5];
davidjhoward 15:a6ee32969e8e 208 value.b.hi_lo = modbus_input_buffer[4];
davidjhoward 15:a6ee32969e8e 209 value.b.hi_hi = modbus_input_buffer[3];
davidjhoward 15:a6ee32969e8e 210 break;
davidjhoward 15:a6ee32969e8e 211 case BigEndianReverseWord:
davidjhoward 15:a6ee32969e8e 212 value.b.lo_lo = modbus_input_buffer[4];
davidjhoward 15:a6ee32969e8e 213 value.b.lo_hi = modbus_input_buffer[3];
davidjhoward 15:a6ee32969e8e 214 value.b.hi_lo = modbus_input_buffer[6];
davidjhoward 15:a6ee32969e8e 215 value.b.hi_hi = modbus_input_buffer[5];
davidjhoward 15:a6ee32969e8e 216 break;
davidjhoward 15:a6ee32969e8e 217 default:
davidjhoward 15:a6ee32969e8e 218 return false;
davidjhoward 15:a6ee32969e8e 219 }
davidjhoward 15:a6ee32969e8e 220 *float_value = value.f;
davidjhoward 4:c35db3946fd8 221 return true;
davidjhoward 4:c35db3946fd8 222 }