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3.2.2：HC32 connect failure

The HC32 chip requires an additional processing flow when programming due to some of the differences in the chip, as detailed below.

1：Offline programming​

If the option byte of the chip is set to primary or secondary protection, the chip will automatically turn off the SWD after programming, and can only be unlocked by pressing the key to enable the ISP method once before continuing to programming, even if the auto-programming enabled.

2：Online programming​

To unlock the chip, you need to set the option byte to unprotected and click on write.

3：Setting reference​

image-20240415141325824

4：Connection Diagram Reference​

image-20240415141425219