About JGaby.1

JGaby.1 · 2025-03-11

I have set up a STM32F103 as a I2C master. I have found that calling the function HAL_I2C_Mem_Read sometimes disables all interrupts for more than 140us. Needless to say this causes significant problems with the timing of other external interrupts. T...

JGaby.1 · 2025-02-22

I am using an stm32F103 and have configured PB4 as a output pin and this works correctly. However when the chip is reset, this pin is automatically pulled high. It appears that this behavior exists because of the pin's dual use as NJTRST. Is there a ...

JGaby.1 · 2024-11-15

I am trying to use pin PA8 as a PWM output using timer 1 on channel 1 for a stm32f103rct6. I have successfully programmed pins PA9, PA10, and PA11 to provide PWM output on channels 2, 3, and 4, but when I do the same for PA8 on channel 1, I do not ge...

JGaby.1 · 2022-04-09

I was having a problem getting the ADC to work in DMA mode on a STM32F103C8 using the default project created by your STM32CubeIDE. As soon as I called HAL_ADC_Start_DMA to start the conversion, the program would crash. The DMA1_Channel1_IRQHandler i...

JGaby.1 · 2022-03-24

I am trying to understand the external interrupts for the STM32F103C8. It seems that I can attach an interrupt to any of the PA or PB pins. The first 5 pins (0-4) seem to have unique IRQ handlers, whereas pins 5-9 share a handler as does 10-13. When ...

JGaby.1 · 2025-03-11

So if I run the I2C at 100 kHz then my interrupts would have 80 us to complete?

JGaby.1 · 2025-02-22

Thanks all for your help.

JGaby.1 · 2025-02-22

I guess I was hoping there was a way to override that behavior but I guess not. I may need to reassign the pin but since I am using every single pin atm that may be difficult.Anyway, thanks for the help.

JGaby.1 · 2025-02-22

I am using Serial Wire for debugging, not JTAG. PB4 definitely goes high when I pull the reset low. It will also go high if I download a new program using STM32CubeMX with an ST Link V2. It will stay high until I run the program which configures PB4 ...

JGaby.1 · 2024-11-15

Ok, I found the problem (it is actually a wonder that it worked at all). In one part of the initialization I was using the structure TIM_OC_InitTypeDef and I was only setting some of it's members before calling HAL_TIM_PWM_ConfigChannel (note that I ...

User statistics

User Activity

HAL_I2C_Mem_Read disables interrupts

Pin PB4 is pulled high during reset for a stm32F103

PWM on PA8 for a stm32f103rct6 does not work

Problems with interrupt vectors for standard STM32F108 project.

Distinguish between PA and PB external interrupts

Re: HAL_I2C_Mem_Read disables interrupts

Re: Pin PB4 is pulled high during reset for a stm32F103

Re: Pin PB4 is pulled high during reset for a stm32F103

Re: Pin PB4 is pulled high during reset for a stm32F103

Re: PWM on PA8 for a stm32f103rct6 does not work