Hello
I have a hw configuration that uses mpu6050, lora chip, gps, and bluetooth using stm32f103 mcu. I use lithium polymer 3.7v 1300mah for power to board.
It doesn't make sense to me, but it's like this.
After downloading the firmware via stlink, mpu6050, lora, gps, and blueetooth work well. In this state, the mpu6050 and GPS will not work if the board is powered on for several hours after turning off power to the board.
1.GPS turns on the power in the form of a module and gets GPS data by itself after about a minute, but when the phenomenon occurs, you can't get gps data even if i turn it on for 10 minutes.
2. MPU6050 needs to get acceleration values using i2c, but if i read the values, they all read zero.
3.Other chips are operating normally.
4. When GPS and MPU6050 don't work, downloading the same firmware via st link can work well again, and sometimes it needs to be downloaded a few more times.
What I thought was that I was using the internal clock of the stm32 and the sw is still on/off, but when I first downloaded it, it worked well, then turned off, and then it didn't work, and I thought it was because the clock shook or didn't work well, but when GPS and MPU started not working, I turned it off. I don't know what to do with debugging.
Have you ever experienced this before?
Or is there a good way to debug to find the cause?
Please give me your opinion.ᅲᅲ
