Notes on software writing:
Clock Distribution
Whether the main clock starts oscillating normally and is stable, and whether the clocks of various peripherals are turned on
Option bytes configuration
Is the I/O remapping function status consistent with the actual project?
If the watchdog is enabled using the hardware method, the watchdog becomes effective immediately after reset and the main program must feed the watchdog.
If the MCU main frequency is higher than 16MHz, the MCU wait period of the option byte needs to be configured as 1
Some bits of the status register are cleared by reading the register, so the consequences of such register operations must be clear.
It is recommended to allocate frequently used variables in Zero page, which can improve the access speed of these variables. For infrequently used variables, @near can be used to define them in the area outside 0xFF (relatively speaking, the access speed is slightly slower). Users can decide according to actual conditions.
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