About markpow

markpow · 2025-01-27

I asked this question on the Seeed community forum, and I decided to ask the same question here.According to Viki, for this board, I have the following image:This image shows two rows of pin labels: one grayed and the second colored. In my infrastruc...

markpow · 2025-01-24

What does this error mean for the I2C interface? I have it on the connection between the LORA E5 Mini and the SI7021 sensor.The debugger stops here:Exactly at his method call: /* Wait until TXIS flag is set */ if (I2C_WaitOnTXISFlagUntilTimeout(hi...

markpow · 2025-01-15

Has anybody successfully attached one of the above sensors to this LORA device?I tried many times with different sources from GitHub but without success.

markpow · 2025-01-06

I think it is the most popular topic among STM32 programmers who use ST-LINK V2 programming devices.I have two devices: one is the Lora E5 MIni, and the second is the Lora E5Dev board. Both respond to the AT commands, so I expect they are healthy.A f...

markpow · 2025-01-03

I get this error when I try to add code for the BMO 280 sensor. I downloaded all the .h and .c files directly from GitHub.I can't find this header file.

markpow · 2025-01-27

I think this is the answer:Looks like there is one possible I2C interface on this board.

markpow · 2025-01-24

@TDKThis helped me to discover the real cause of my problem. I debugged the code and found that LORA couldn't find the sensor attached to it.

markpow · 2025-01-24

@TDK According to the MX documentation for this chip under the STMCubeIDE, these GPIOs (for I2C) don't need any pullups or pulldowns.I have several sensors attached to the LORA devices without those pulls.

markpow · 2025-01-24

@Karl Yamashita I choose I2C3, so PC0 and PB14 will the pins to connect. But I think my LORA was destroyed, and it caused my problem. I got another LORA, and SI7021 worked with this device.Thanks to all of you who tried to help me.

markpow · 2025-01-24

I2C doesn't see device:According to the MX configuration, I2C3 has the following GPIO:According to the WIO Lora E5 Mini wiki, I see that these pins arePCO => RX1PB14 => MISOThe Green LED on the SI7021 fires.I checked the connections between LORA and ...

User statistics

User Activity

How many I2Cs are on the Seeed Lora E5 Mini board?

I2C HAL Size Management error - STM32WL + Si7021

BMP280 or BME280 on the LORA E5 Mini board

Error: No STM32 target found!

../Core/Inc/stm32f0xx_hal_def.h:29:10: fatal error: stm32f0xx.h: No such file or directory

Re: How many I2Cs are on the Lora E5 Mini board?

Re: I2C HAL Size Management error

Re: I2C HAL Size Management error

Re: I2C HAL Size Management error

Re: I2C HAL Size Management error