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alejoseb / Modbus-STM32-HAL-FreeRTOS

Modbus TCP and RTU, Master and Slave for STM32 using Cube HAL and FreeRTOS
GNU Lesser General Public License v2.1
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Demo for modbus TCP is wrong #84

Closed nadav-bariks closed 1 year ago

nadav-bariks commented 1 year ago

in ModbusH743TCP demo ModbusInit()/ModbusStart() are called in main before calling osKernelInitialize() and MX_FREERTOS_Init() the code fails because netconn_new() returns NULL in TCPinitserver() if you move the call to ModbusInit()/ModbusStart() to be executed in StartDefaultTask() after the call to MX_LWIP_Init() then netconn_new() returns a nerconn object

alejoseb commented 1 year ago

The example works without any issue. ModbusInit()/ModbusStart() only creates tasks but they are not executed till kernel is initialized. In fact TCPinitserver is only called here: https://github.com/alejoseb/Modbus-STM32-HAL-FreeRTOS/blob/5018a8db85919ff9439f8fd1a018de5543630161/MODBUS-LIB/Src/Modbus.c#L640

Which is only executed within a task that is executed only after the kernel is initialized. Maybe you did some changes to the example.

I am closing this issue since the example is working.