HW board is stm32f429I-Discovery (MCU: stm32f429ZIT6).
I use STM32Cube MX V4.9 and stm32f429 firmware package V1.7 to generate source code of USB CDC function. GUI select device_only mode, and HSE to external 8MHz crystal, and configure USB clock to 48MHz, CPU: 168MH.
After I increase the heap size in stm32f4xxx_icf, then I can enumerate CDC successfully and TX(device to PC) characters continuously.
But, the issue I met is RX(PC to device) only can do once. RX IRQ won't come again, even TX still works after that.
anyone met some issue? any thought to figure it out?
I check some internal control variables, such hpcd_USB_OTG_HS (Lock is HAL_UNLOCK, state is HAL_PCD_STATE_READY)
==RX call stack==