Chip related issues;¶ 1 GPIO相关 2 定时器相关 3 Middle;断相关 4 Watchdog;相关 5 RTC相关 6 ADC相关 7 I2C相关 8 低功耗相关 9 PWM 10 系统 11 Bluetooth; 12 USB相关 13 UART相关 14 双核相关 15 I2S;related; 13; SPI related issues;