add ultrasonic sending interval constant macro definition
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		| @@ -13,6 +13,7 @@ | |||||||
| #include "ultrasonic_driver.h" | #include "ultrasonic_driver.h" | ||||||
|  |  | ||||||
| #define ULTRASONIC_CYCLES     0x05U | #define ULTRASONIC_CYCLES     0x05U | ||||||
|  | #define ULTRASONIC_TRAN_US    50  // (ms) | ||||||
|  |  | ||||||
| /*! | /*! | ||||||
|     \brief      main function |     \brief      main function | ||||||
| @@ -47,7 +48,7 @@ int main(void) | |||||||
|  |  | ||||||
|     while(1) |     while(1) | ||||||
|     { |     { | ||||||
|         delay_ms(50); |         delay_ms(ULTRASONIC_TRAN_US); | ||||||
|         ultrasonic_pwm_out_cycles(ULTRASONIC_CYCLES); |         ultrasonic_pwm_out_cycles(ULTRASONIC_CYCLES); | ||||||
|         // printf("Send ultra sonic driver signal!\r\n"); |         // printf("Send ultra sonic driver signal!\r\n"); | ||||||
|     } |     } | ||||||
|   | |||||||
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