STM32CubeMX is driving me crazy, experts please help!

bigbat

STM32CubeMX is driving me crazy, experts please help! [Copy link]

In STM32CubeMX, I plan the STM32F407VG chip, which is a LQFP100-pin chip. According to the data, the USART1 port (PA9, PA10 pins) and (PB6, PB7) have this function. STM32CubeMX plans PA10=USART1_RX, PB6=USART1_TX. These two pins are far away. Have I used the function of the PA9 pin? And I can't change it from the software. Can anyone who knows tell me why? Should I trust the settings of STM32CubeMX?

littleshrimp

What can't be modified?

wenyangzeng

This should not be blamed on CubeMX. It may be that the OP has pre-configured PA9 for other purposes. Click PA9 with the left mouse button to reconfigure it

bigbat

wenyangzeng posted on 2019-2-14 19:19 This should not be blamed on CubeMX. It may be that the host has pre-configured PA9 for other purposes. Click on PA9 with the left mouse button to reconfigure it back.

Thank you. This is my first time using CubeMX and I am not familiar with this software. Can I set up the pin planning for a long distance like this in this way?

wenyangzeng

bigbat posted on 2019-2-14 19:35 Thank you, this is my first time using CubeMX and I am not familiar with this software. Can I set up the pins for this long distance like this?

Yes, you should configure USART1 first, it will automatically configure PA9 and PA10, then click PB6 to set it as USART-TX pin

y909334873

You have selected other functions for A9 in advance, and then when you select uart, the software will assign other pins. If you are sure that A9 is used as a serial port, you can modify it manually. Before you see what function A9 is configured for, just remember to modify it to other places. If you are afraid of the distance, you can change it to B6B7. However, the distance of the serial port does not affect the

常见泽1

STM32CUBEMX is pretty good. It can be basically configured. I usually use it to see the pin functions.

bigbat

Actually, my first impression of stm32 was not good. About ten years ago, I saw its demonstration and bought a stm32f103 board for the first time. Later, I made a board , but because I didn't use the ADC function, I didn't connect the VDDA pin, and the result was tragic! There was no way to fly a "wire". The board finally worked, so I started to debug I2C, using the function library. As a result, it didn't work after a long time, so I talked to my friends: "This ARM M3's I2C really doesn't work!" As a result, my friend said that not all M3's I2C didn't work, but ST's M3 I2C didn't work. You can look at their errata. Later, I didn't feel like studying this matter, so I changed to the NXP LPC1758 chip. Because my project has a lot of I2C functions, I haven't used the STM32 series chips for a long time. Until recently, I saw that many people use STM32 chips, and I felt confident. Please give me more suggestions from all the masters, because I really don't understand the STM32 series.

辛昕

I'm even worse.

There is no way to update the firmware library