About Gavin Baker

Gavin Baker · 2018-08-31

A while back, I found a bug in the osTimer implementation (relating to the callback parameter), and reported it here:https://github.com/ARM-software/CMSIS-FreeRTOS/issues/9only to discover it has been fixed in v2 and the version that ships with the S...

Gavin Baker · 2018-06-14

Posted on June 15, 2018 at 05:37Working on an STM32F103, using PWM to generate waveforms. The timer is in One Pulse mode and uses the Repetition Count Register to clock out the required signals. Based on user selection, I am stopping and starting th...

Gavin Baker · 2018-03-19

Posted on March 20, 2018 at 03:21After upgrading to 4.25 and regenerating the project, I went through a diff of all the changes in generated code since the previous version. The majority were whitespace and comment changes which were fine.But I did ...

Gavin Baker · 2018-03-14

Posted on March 14, 2018 at 08:07When the attached ioc file (minimal test case, consistently reproducible) is generated using CubeMX 4.24, firmware package V1.6.0 and built with TrueStudio 9.0.0 the processor locks up when it reaches the call to __H...

Gavin Baker · 2018-02-14

Posted on February 15, 2018 at 04:53STM32CubeMX Version: 4.24.0Target MCU: STM32F103RFTx LQFP64Target IDE: Atollic TrueStudioSteps to reproduce: Start with a valid, working .ioc fileSelect Save and Generate CodeThe first time, it successfully gener...

Gavin Baker · 2019-02-24

I just checked the latest F1 firmware package version 1.7.0, and the CMSIS-FreeRTOS version still appears to be unchanged, at 1.02. Are there plans to upgrade the CMSIS support to v2?@STM32 MCUs

Gavin Baker · 2018-09-17

UVC is a relatively large and complex device class. And for a host, it requires considerable bandwidth for video streams, memory for buffering frames, and CPU power for running codecs. Unless you have a very low-resolution FS webcam, it is unlikely t...

Gavin Baker · 2018-07-08

Posted on July 09, 2018 at 02:51I have had some experience with LWIP, and in the past encountered similar performance problems with the default settings. The defaults are really all tuned to the most minimal settings, which suit systems with very me...

Gavin Baker · 2018-06-15

Posted on June 15, 2018 at 10:24Jan,I added the following code before restarting the timer PWM outputs and it worked: TIM1->EGR |= (1 << 0); // Bit 0: UGI was too focused on trying to modify/reset the state, and I didn't realise you could trigger ti...

Gavin Baker · 2018-06-14

Posted on June 15, 2018 at 03:47Did you ever find an answer to this question?In the reference manual (RM0008) in Section 14.4.13 describing TMx_RCR, it mentions REP_CNT, and 'Figure 52: Advanced control timer block diagram' has boxes showing the 'RE...

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When will CMSIS-FreeRTOS be upgraded to v2?

STM32 stopping and restarting PWM output has residual repetition count

Bug: CubeMX 4.25 path changes in Makefile

Bug: CubeMX TIM3 initialisation code causes lockup

Bug: STM32CubeMX code generation for TrueStudio

Re: When will CMSIS-FreeRTOS be upgraded to v2?

Re: USB Video Class Host (UVC) into STM32xx HAL

Re: UDP packet loss

Re: STM32 stopping and restarting PWM output has residual repetition count

Re: n-Pulse generation : REP_CNT register