About JMora.2

JMora.2 · 2020-06-12

Hello all, I'm designing a num pad using the STMF103 MCUs you can find on the Blue Pill board. However, I am having issues uploading the code to my board via SWD. I get this classic error: Error in initializing ST-LINK device.Reason: (4) No device fo...

JMora.2 · 2020-05-13

I am trying to send a shift + U keypress to the screen every two seconds but it is just printing U's nonstop. Why isn't it delaying for two seconds? How do I properly debug stuff like this in the future? while (1) { hid_report_buffer[0] = 0x02;...

JMora.2 · 2020-01-25

I am using the code provided in the TN1218 sheet, and I've attached a screenshot of my variables.

JMora.2 · 2020-06-13

Thank you clive1. It was indeed the chip and not the routing. You are a hero! 8)

JMora.2 · 2020-06-13

Thanks for the recommendation, I will check it out for sure, but for now I have a couple of F103 MCUs that I would like to use and I would rather try to solve the problem instead of discarding it and switching over, unless it really is the MCUs fault...

JMora.2 · 2020-06-13

Why do I need NRST and VBAT connected? The datasheet shows an active internal pullup on NRST, and states that VBAT is a backup voltage pin when VCC is not present. I don't see how that is relevant to the SWD interface not working. And yes I've looke...

JMora.2 · 2020-05-13

I think it is because of the polling interval on the host. It works when I insert a delay larger than the polling interval. But I am still confused as why the delay is not being hit at all in the first case.

JMora.2 · 2020-01-31

To add a bit more clarity to my question - Sometimes my T_OUT value doesn't update at all, and other times it updates but produces very sporadic values. Since I am using the code provided in TN1218, I am unsure how to proceed. I've also tried using a...

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STM32F103 SWD Design Problems

STM32 delay not working as expected with USB HID

I have a X-NUCLEO-IKS01A2 board connected to a stm32 nucleo and I'm trying to read the temperature from the HTS221. However, I get really wrong values. Does something need to be set in the control registers before reading? Thanks.

Re: STM32F103 SWD Design Problems

Re: STM32F103 SWD Design Problems

Re: STM32F103 SWD Design Problems

Re: STM32 delay not working as expected with USB HID

Re: I have a X-NUCLEO-IKS01A2 board connected to a stm32 nucleo and I'm trying to read the temperature from the HTS221. However, I get really wrong values. Does something need to be set in the control registers before reading? Thanks.