+
+#if AO_HSE
+#define AO_PLLSRC AO_HSE
+#else
+#define AO_PLLSRC STM_HSI_FREQ
+#endif
+
+#define AO_PLLVCO (AO_PLLSRC * AO_PLLMUL)
+#define AO_SYSCLK (AO_PLLVCO / AO_PLLDIV)
+#define AO_HCLK (AO_SYSCLK / AO_AHB_PRESCALER)
+#define AO_PCLK1 (AO_HCLK / AO_APB1_PRESCALER)
+#define AO_PCLK2 (AO_HCLK / AO_APB2_PRESCALER)
+
+#if AO_APB1_PRESCALER == 1
+#define AO_TIM23467_CLK AO_PCLK1
+#else
+#define AO_TIM23467_CLK (2 * AO_PCLK1)
+#endif
+
+#if AO_APB2_PRESCALER == 1
+#define AO_TIM91011_CLK AO_PCLK2
+#else
+#define AO_TIM91011_CLK (2 * AO_PCLK2)
+#endif
+
+#define AO_STM_NVIC_HIGH_PRIORITY 4
+#define AO_STM_NVIC_CLOCK_PRIORITY 6
+#define AO_STM_NVIC_MED_PRIORITY 8
+#define AO_STM_NVIC_LOW_PRIORITY 10
+
+void ao_lcd_stm_init(void);
+
+void ao_lcd_font_init(void);
+
+void ao_lcd_font_string(char *s);
+
+char
+ao_serial1_getchar(void);
+
+void
+ao_serial1_putchar(char c);
+
+char
+ao_serial1_pollchar(void);
+
+void
+ao_serial1_set_speed(uint8_t speed);
+
+char
+ao_serial2_getchar(void);
+
+void
+ao_serial2_putchar(char c);
+
+char
+ao_serial2_pollchar(void);
+
+void
+ao_serial2_set_speed(uint8_t speed);
+
+char
+ao_serial3_getchar(void);
+
+void
+ao_serial3_putchar(char c);
+
+char
+ao_serial3_pollchar(void);
+
+void
+ao_serial3_set_speed(uint8_t speed);
+
+extern const uint32_t ao_radio_cal;
+
+void
+ao_adc_init();