About Mark5918

Mark5918 · 2024-02-20

My project use STM32U595 chip. It will use HS USB to send large amount data to computer.I use NUCLEO-U5A5ZJ-Q for testing.The project use Ux_Device_CDC_ACM in NUCLEO-U5A5ZJ-Q of STM32Cube_FW_U5_V1.4.0.I reference this post https://community.st.com/t5...

Mark5918 · 2024-02-22

I try to build the project with no blocking write. When I comment out"#define UX_DEVICE_CLASS_CDC_ACM_TRANSMISSION_DISABLE" in ux_user.h,the code always fail at _ux_utility_memory_free_block_best_get() function called by" cdc_acm -> ux_slave_class_cd...

Mark5918 · 2024-02-22

Thank you @tjaekel for reply.I do check the receiving content in computer side. the Byte number and content is good as MCU sending.For CDC_ACM IN (MCU to computer), The USB will not let MCU to sending if host is busy in blocking write. So It should n...

Mark5918 · 2024-02-21

I use SysTick or HAL tick depend on how quick of one cycle:if #define TOTALBYTE APP_TX_DATA_SIZE*10, I use SysTick. more than 10, I use HAL 1ms ticks.See the function:#define MAX_PKT_SIZE 2048 //512 /* 200 */ /* 512 */ /* 1024 */ #define TOTALBYTE A...

Mark5918 · 2024-02-20

I find the problem:I use Realterm on windows10 as serial port terminal. This software has issue for receiving no ASCII character.When I write C++ code to handle the virtual serial port. The STM32U5A5 can complete all data at 4MBPS rate.

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