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When CLK_CFG_EXT_EN is DEF_DISABLED and CLK_CFG_SIGNAL_EN is DEF_ENABLED in clk_cfg.h (see section 3-1-1 Module Configuration), this function must be periodically called by application/BSP functions in order to increment the internal clock ticker. CLK_CFG_SIGNAL_FREQ_HZ must be configured to the number of times this function gets called every second.
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