About dlkeng

dlkeng · 2023-12-01

In the AutoDevKit's AEK-MOT-TK200G1 SPC582Bxx_RLA_AEK-MOT-TK200G1_MotorControl_via_CAN - Test Application, the operation of the functions controlling the trunk lock and trunk unlock motor appears to be incorrect in that the PWM duty cycle has the opp...

dlkeng · 2023-11-28

I've recently evaluated the AEK-MOT-MR200G1 and AEK-MOT-TK200G1 evaluation boards to gain a better understanding of using the L99DZ200G device and have noticed that neither of those boards used the on-chip CAN transceiver in the L99DZ200G device but,...

dlkeng · 2020-09-15

In STM32CubeIDE V1.4.2, if the CubeMX Project Manager has the "Generate peripheral initialization as a pair of '.c/.h' files per peripheral" setting enabled after the project had been built with it previously disabled, when the project code is re-gen...

dlkeng · 2020-09-14

Using STM32CubeIDE version 1.4.2 on a Windows 7 64-Bit Home Premium Edition, Version 6.1 (Build 7600) laptop, I am unable to program and debug a project on a NUCLEO-F401RE board.When I attempt to debug to program the board and debug and run the firmw...

dlkeng · 2014-05-29

Posted on May 30, 2014 at 03:43The STM32CubeF4 __HAL_UART_CLEAR_FLAG( ) macro is incorrect because it does a read-modify-write. If a status bit becomes set in the USART_SR register by the hardware between the read and the write, that change will be ...

dlkeng · 2024-02-14

I recently reverse-engineered a USB multifunction tester device that had a similar unmarked MCU chip on it that had a similar pinout. From what I could find, this MCU appeared to be a CH32X033F8P6 Chinese device.See: https://www.wch-ic.com/products/C...

dlkeng · 2023-12-02

It is not very likely that the Power Liftgate system in the demo varied the speed of the lock/unlock motor, so this speed control issue would not have been easily noticed. I noticed it in my testing of my Arduino library for the L99DZ200G when I vari...

dlkeng · 2020-09-29

I have attached a .zip file with the .ioc, main.c, and freertos.c files of the before and after configurations changes with a ReadMe.txt file providing the step-by-step operations to reproduce this issue.

dlkeng · 2014-05-30

Posted on May 30, 2014 at 14:57No, that does not keep the underlying hardware from changing status bits as conditions occur. Instead, the following are proposed for these macros:#define __HAL_UART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->In...

dlkeng · 2014-05-29

Posted on May 30, 2014 at 02:28Thank you! That was the problem. The STM32F4xx HAL uses the following macro to clear TIMx interrupts: #define __HAL_TIM_CLEAR_IT(__HANDLE__, __INTERRUPT__) ((__HANDLE__)->Instance->SR &= ~(__INTERRUPT__)) As you can s...

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AEK-MOT-TK200G1 Test Application Lock/Unlock motor PWM speed control incorrect

CAN Transceiver usage in L99DZ200G

STM32CubeIDE does not retain user code in FreeRTOS tasks when regenerating with Project Manager Generated Files change

STM32CubeIDE, unable to program and debug on Windows 7

STM32CubeF4 __HAL_UART_CLEAR_FLAG macro is incorrect

Re: Unknown TSSOP-20 chip identification

Re: AEK-MOT-TK200G1 Test Application Lock/Unlock motor PWM speed control incorrect

Re: STM32CubeIDE does not retain user code in FreeRTOS tasks when regenerating with Project Manager Generated Files change

Re: STM32CubeF4 __HAL_UART_CLEAR_FLAG macro is incorrect

Re: STM32F4xx HAL_TIM_IRQHandler misses interrupts on nearly overlapping TIM interrupts