Working mode switching method and device for GNSS (Global Navigation Satellite System) navigation chip

The invention discloses a GNSS (Global Navigation Satellite System) navigation chip working mode switching method, which comprises the following steps that: when a first switching instruction is received, a GNSS navigation chip is switched to a function safety mode, and in the function safety mode, hardware circuit fault detection on an analog radio frequency circuit and/or a digital baseband circuit of the GNSS navigation chip is executed; and when a second switching instruction is received, the GNSS navigation chip is switched to a non-functional safety mode, and in the non-functional safety mode, hardware circuit fault detection of an analog radio frequency circuit and/or a digital baseband circuit of the GNSS navigation chip is not executed. 本发明公开一种GNSS导航芯片工作模式切换方法，包括：当接收第一切换指令时，所述GNSS导航芯片切换至功能安全模式，在功能安全模式下，执行对所述GNSS导航芯片的模拟射频电路和/或数字基带电路的硬件电路故障检测；当接收第二切换指令时，所述GNSS导航芯片切换至非功能安全模式，在非功能安全模式下，不执行对所述GNSS导航芯片的模拟射频电路和/或数字基带电路的硬件电路故障检测。