About JAlle.2

JAlle.2 · 2021-01-05

Upon reading the user manual for the STM32F072, it seems like it is only possible for the slave and master to both read on the first edge or both read on the second edge. However, I am trying to interface with an ASIC in which the ASIC(slave) reads o...

JAlle.2 · 2020-12-31

I am trying to code SPI functionality to connect with an external 16-bit ADC. The STM32 only receives data from the ADC, so only a MISO and SCLK line, along with a Conversion/CS line is required. I am currently using the 32F072BDISCOVERY board to te...

JAlle.2 · 2020-12-22

I'm using the STM32F072RB MCU and I am trying to increase the SPI baud rate. The HSI48 Clock is 48MHz and the minimum SPI clock prescaler is 2 which comes out to be 24Mbit/s. However, it gives me an error stating that the baud rate is more than 18MB...

JAlle.2 · 2020-12-16

I am implementing the conversion complete callback function for the ADC and am trying to send a message over UART when this completes. However, it does not seem to want to work. I have independently verified that both the callback function is being c...

JAlle.2 · 2020-11-17

I am using a current sense amplifier (INA190) to measure current. The output of the current sense amplifier will go to the input of the ADC on the STM32. The output range will (ideally) be between (0-VREF). From working with an external 16 bit ADC, I...

JAlle.2 · 2021-01-05

Seems like the only thing I can do then is to bit bang it in software by toggling GPIOS and not use the SPI peripheral at all. Not ideal but the person who designed the ASIC created the slave SPI this way - I have to be able to communicate with it s...

JAlle.2 · 2020-12-31

Ah well that'll do it. Pretty frustrating how hidden that detail seems to be. I feel like something like that be made more visible and clear in the user manual. I mean now it makes sense that its located in the solder bridge section and I'll know to ...

JAlle.2 · 2020-12-31

The "not working" pin is PA6. I'm not entirely sure what else it's wired up to. If it is wired to something else that's preventing me from using it, why would they break out that pin to a header on the board in the first place?

JAlle.2 · 2020-12-31

AHHH. I switched to using SPI2 and it is working now. Is it possible that my SPI1 is broken? The amount of time I spent trying to debug this - so frustrating. Thanks for all your help!

JAlle.2 · 2020-12-31

I am using the STM32CUBEIDE with the MX perspective to generate the code for me. Wouldn't this automatically set the pin and GPIO clocks? I just double checked however and the pins are set to be SCLK and MISO functions. I am not quite sure how to ena...

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User Activity

Is it possible for slave to read on 1st clock edge and master to read on the 2nd clock edge for SPI?

SPI not working with MISO connected to 3V and 0V

Why is SPI clock baud rate limited to 18Mbit/s?

Can you send a message over UART in a callback function?

Is there any required external circuitry for the ADC?

Re: Is it possible for slave to read on 1st clock edge and master to read on the 2nd clock edge for SPI?

Re: SPI not working with MISO connected to 3V and 0V

Re: SPI not working with MISO connected to 3V and 0V

Re: SPI not working with MISO connected to 3V and 0V

Re: SPI not working with MISO connected to 3V and 0V