About Dim N

Dim N · 2021-11-23

I am trying to get a simple I2C connection running and the I2C1 peripheral on a STM32L052 is giving me hell. Here is what I have done so far:I have written a simple driver for STM32L053 using I2C2 with interrupts. I have tried it on a couple of diffe...

Dim N · 2019-11-19

Hello,I am developing a USB HID application on STM32L443. The HID communication works in both directions when I put the controller in Sleep mode with WFI and Sleep on Exit. I am currently experimenting on the suspend/resume capability of the USB. I h...

Dim N · 2017-11-29

Posted on November 29, 2017 at 10:16Hello,I am interested in the the STM32L063C8. In my application I will be using an USART in synchronous mode and there are some things about the clock signal that I do not understand. In the reference manual RM036...

Dim N · 2021-11-26

My guess would be that the difference comes from the way the peripherals are clocked. I2C2 is clocked directly by PCLK, while the clock for I2C1 goes through a MUX, as its clock source can be changed. I think that testing this by varying the core clo...

Dim N · 2021-11-24

The package is 48-pin LQFP (STM32L052C8T6). You are right - this code cannot set GPIOB->AFRH to 0x44. But there is a typo in the code I pasted - at the moment I copied this part I was restoring the code from tests with I2C2, which uses other pins and...

Dim N · 2021-11-24

Just a quick update - the communication on wake-up stops after the first byte because of my mistake. I have configured the RTC IRQ priority higher than the one for I2C. So I send the first byte, flags get updated in I2C1->ISR as you can see in my pre...

Dim N · 2021-11-24

Here is the code for I2C1:void I2C_Init() { ///Enable load switch RCC->IOPENR |= RCC_IOPENR_GPIOBEN; MODIFY_REG(GPIOB->MODER, GPIO_MODER_MODE11, GPIO_MODER_MODE11_0); GPIOB->BSRR = GPIO_BSRR_BS_11; msDelay(100); ///Enable I2C peripheral RCC...

Dim N · 2019-11-19

Thanks for the reply. It turned out to be a simple thing - I was using another EXTI channel, but instead of setting its bit in EXTI->IMR, I was overwriting the whole register, clearing the USB FS on line 17.

User statistics

User Activity

Differences between the I2C1 and I2C2 modules on STM32L0

STM32L4 USB wake up from Stop0/1

STM32 USART clock

Re: Differences between the I2C1 and I2C2 modules on STM32L0

Re: Differences between the I2C1 and I2C2 modules on STM32L0

Re: Differences between the I2C1 and I2C2 modules on STM32L0

Re: Differences between the I2C1 and I2C2 modules on STM32L0

Re: STM32L4 USB wake up from Stop0/1