STM32F401RCT6/STM32F401CCU6 core board system board development board Micropython

Link: https://pan.baidu.com/s/1osbqveqx1qi4rijs16068q?pwd=1234

Extract code: 1234

ISP mode download

Method 1: In the power -on state, hold down the boot0 key and reset key, then release the reset key, and then open the boot0 key after 0.5 seconds
Method 2: When the power is turned off, press and hold the BOOT0 key, and release the boot0 0.5s after power on

USB data cable connects the Type-C interface of MCU, connects PA9 and PA10 serial port, download software Recommend STM32CUBEPROG

Serial port download

USB reaches (EX.:ch340) TX -PA10, RX -PA9, do not connect the Type -C of MCU to the computer, you must use external power supply, otherwise it will affect the MCU download

Use STM32CubeProgammer to download the serial port

MCU enters the ISP mode and connects the computer with USB data cable
Select firmware, the rest of the operation is consistent with the serial port download

设备管理器->STM32 Bootloader or DFU In FS Mode device appears

If the device that appears is STM Device in DFU Mode, you need to right -click to uninstall the device and check the driver software driver that deletes this device.

USB download may have a certain unstable affected by weather. If the following error or device cannot be recognized repeatedly, please use serial port download and disconnect the USB connection.

1 2 Error: FAILED to Download Segment [0] Error: Failed to download the file

The reason for the above error: the room temperature is low, the HSI has a deviation, the USB download uses an external high -speed crystal, and the ISP program (ST's self -lifting program) measures the external crystal HSE frequency through HSI and then configures the clock.The HSE measurement frequency is incorrect, so that the USB timing is wrong, causing download errors.For specific details, we can see the self -lifting mode of the network disk /universal document /an2606 STM32 microcontroller system memory .PDF
Solution: Appropriate heating MCU to above 25 ° C (covering heat with your hands)

St-link/j-link download

SW interface connected to STM32:

SW interface
GND
SCK
DIO
3.3V

Click the download button in the MDK software or select ST-LINK in Stm32CubePROG to operate according to the prompts.

Cubemx projects or standard library projects must enable the SW debugging interface, otherwise the debugger cannot identify the MCU
Code engineering crystal settings are incorrect or other abnormalities cause the debugger to recognize the MCU. At this time, manually set MCU to enter the ISP mode, the debugger can identify the MCU, and then click to download.
The ISP mode is just a section of the ST company's solidification in the MCU. Check the bootx settings. The running mode is transferred at 0x080000 to run. The download mode is waiting for the download command. At this time, the SW debugging download interface is open.MCU code.

JTAG interface conversion SW interface
TMS SWDIO
TCK SWCLK
VTEST 1 foot some Jlink needs to receive 3.3V to recognize MCU 3.3V
3.3V 3.3V
GND

Debug interface SW interface and JTAG interface, ARM's debugger basically supports the SW interface
Jlink can connect to the chip, but it cannot be downloaded, please upgrade Jlink to the new version, V6.50A test available