rs485_get_freq(): 用 g_loop_acs_info.loop_capvd + loop1_LPCNT 直接算 freq = FREQ_SYS * LPCNT / capvd + 360 之前 g_loop_acs_info.frequent 只在 usart_packet_processing_acs_loop 里赋值,该路径被 g_dbn_ble_state_acs_enable.enable 门控, BLE 断开时 freq 永远为 0
rs485_get_freq(): 用 g_loop_acs_info.loop_capvd + loop1_LPCNT 直接算 freq = FREQ_SYS * LPCNT / capvd + 360 之前 g_loop_acs_info.frequent 只在 usart_packet_processing_acs_loop 里赋值,该路径被 g_dbn_ble_state_acs_enable.enable 门控, BLE 断开时 freq 永远为 0