Posted on July 02, 2018 at 11:00Hello,I am using an STM32F042 controller. I have to send a wake-up pattern followed immediately by 5 bytes (@10400 baud) from my device. Wakeup pattern: 25msec LOW followed by 25msec HIGH5 byte sequence: 0xC1, 0x11, 0...
Dear all,for my application I need to store some user settings in the internal Flash and be able to modify/read them during execution. I have been succesfully familiarising with the Erase/write ans read functions with no particular struggle. Now I wa...
Posted on January 09, 2018 at 17:38The original post was too long to process during our migration. Please click on the attachment to read the original post.
While preparing slides for students about timers in STM32F7 microcontrollers, I came across several inaccuracies in the description of their work presented in the STM32F7 reference manual RM0410 rev 4. The following sentence can be found in the menti...
I have been told that the STM32F103C8T6 has 4 SPI peripherals, including the 2 SPI peripherals and the USART peripherals. Though upon browsing the reference manual in the USART section, it seems as if it has to use start/stop bits, and therefore can'...
Very strange behavior, the instruction:uint32_t xid; xid = rand();cause hard fault due to unaligned address.I am using Atollic TrueSTUDIO Version: 9.3.0
In RM0008 Technical Reference Chapter 15, TIMx_ARR was introduced in counting mode. Meanwhile, two other registers: preloaded and shadow register, were also mentioned. However, in the TIMx register Map, Preloaded and shadow registers were not mention...
I'm trying to perform signal filtering with STM32F407VGT. I've set up the ADC and DAC to work synchronously, triggered by a timer at 42kHz, and using DMA. The idea is to process half of the buffer while ADC is filling the other half. However, even wi...
In the RM0008, Figure 120 on page 379, it says "as soon as the CEN bit is written to 1, the prescaler is clocked by the internal clock, CK_INT. " as shown below. However in the figure, the CK_CNT appears 2 cycles after the CEN bit became 1. Given t...
Could anybody help me to figure out the exact meaning of PWREN bit in register RCC_APB1ENR?I could not find any comments in the STM32 programming reference mannual.Thanks,Troy
