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This commit is contained in:
JeroenSt 2022-08-17 19:55:41 +02:00
parent 2c2a73506d
commit 92319eedd2
1 changed files with 26 additions and 16 deletions
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38
tasmota/tasmota_xdrv_driver/xdrv_63_modbus_bridge.ino
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@ -102,7 +102,8 @@ enum class ModbusBridgeError
wrongstartaddress = 4,
wrongtype = 5,
wrongregistercount = 6,
wrongcount = 7
wrongcount = 7,
tomanydata = 8
};
enum class ModbusBridgeFunctionCode
@ -150,7 +151,6 @@ struct ModbusBridge
uint8_t deviceAddress = 0;
uint8_t count = 0;
bool raw = false;
};
ModbusBridge modbusBridge;
@ -161,8 +161,10 @@ ModbusBridge modbusBridge;
//
bool ModbusBridgeBegin(void)
{
if ((Settings->modbus_sbaudrate < 1) || (Settings->modbus_sbaudrate > (115200 / 300))) Settings->modbus_sbaudrate = (uint8_t)((uint32_t)MBR_BAUDRATE / 300);
if (Settings->modbus_sconfig > TS_SERIAL_8O2) Settings->modbus_sconfig = TS_SERIAL_8N1;
if ((Settings->modbus_sbaudrate < 1) || (Settings->modbus_sbaudrate > (115200 / 300)))
Settings->modbus_sbaudrate = (uint8_t)((uint32_t)MBR_BAUDRATE / 300);
if (Settings->modbus_sconfig > TS_SERIAL_8O2)
Settings->modbus_sconfig = TS_SERIAL_8N1;
int result = tasmotaModbus->Begin(Settings->modbus_sbaudrate * 300, ConvertSerialConfig(Settings->modbus_sconfig)); // Reinitialize modbus port with new baud rate
if (result)
@ -236,10 +238,10 @@ void ModbusBridgeHandle(void)
MBAP_Header[5] = (modbusBridge.registerCount * 2) + 3;
MBAP_Header[6] = buffer[0]; // Send slave address
client.write(MBAP_Header, 7);
client.write(buffer + 1, 1); // Send Functioncode
client.write(buffer + 1, 1); // Send Functioncode
uint8_t bytecount[1];
bytecount[0] = modbusBridge.registerCount * 2;
client.write(bytecount, 1); // Send length of rtu data
client.write(bytecount, 1); // Send length of rtu data
client.write(buffer + 3, (modbusBridge.registerCount * 2)); // Don't send CRC
client.flush();
AddLog(LOG_LEVEL_DEBUG, PSTR("MBS: MBRTCP from Modbus deviceAddress %d, writing %d bytes to client"), buffer[0], (modbusBridge.registerCount * 2) + 9);
@ -554,18 +556,25 @@ void CmndModbusBridgeSend(void)
JsonParserArray jsonDataArray = root[PSTR(D_JSON_MODBUS_DATA)].getArray();
if (jsonDataArray.isArray())
{
writeDataSize = jsonDataArray.size();
if (modbusBridge.registerCount != writeDataSize)
if (modbusBridge.registerCount > 40)
{
errorcode = ModbusBridgeError::wrongcount;
errorcode = ModbusBridgeError::tomanydata;
}
else
{
writeData = (uint16_t *)malloc(writeDataSize*2);
for (uint8_t jsonDataArrayPointer = 0; jsonDataArrayPointer < writeDataSize; jsonDataArrayPointer++)
writeDataSize = jsonDataArray.size();
if (modbusBridge.registerCount != writeDataSize)
{
writeData[jsonDataArrayPointer] = jsonDataArray[jsonDataArrayPointer].getUInt(0);
errorcode = ModbusBridgeError::wrongcount;
}
else
{
writeData = (uint16_t *)malloc(writeDataSize * 2);
for (uint8_t jsonDataArrayPointer = 0; jsonDataArrayPointer < writeDataSize; jsonDataArrayPointer++)
{
writeData[jsonDataArrayPointer] = jsonDataArray[jsonDataArrayPointer].getUInt(0);
}
}
}
}
@ -579,7 +588,8 @@ void CmndModbusBridgeSend(void)
}
// If writing a single coil or single register, the register count is always 1. We also prevent writing data out of range
if ((modbusBridge.functionCode == ModbusBridgeFunctionCode::mb_writeSingleCoil) || (modbusBridge.functionCode == ModbusBridgeFunctionCode::mb_writeSingleRegister)) modbusBridge.registerCount = 1;
if ((modbusBridge.functionCode == ModbusBridgeFunctionCode::mb_writeSingleCoil) || (modbusBridge.functionCode == ModbusBridgeFunctionCode::mb_writeSingleRegister))
modbusBridge.registerCount = 1;
tasmotaModbus->Send(modbusBridge.deviceAddress, (uint8_t)modbusBridge.functionCode, modbusBridge.startAddress, modbusBridge.registerCount, writeData);
free(writeData);