[Rawpixel RVB2601 development board trial experience] Breathing light and red and blue warning light

韵湖葱白

[Rawpixel RVB2601 development board trial experience] Breathing light and red and blue warning light [Copy link]

 

## Preface The reviewer said that I wrote it too simply, but in fact, I was scared by CDK. This article may be just to make up the numbers, but it can help beginners. # Breathing light Let me briefly explain the principle of breathing light. The brightness of the light is actually adjusted by the duty cycle. The so-called breathing light is controlled according to the cycle of off-gradually brighten-gradually dim-off. The code looks like this: (g_ctr_flag controls the direction flipping, g_ctr controls the duty cycle) ``` if (g_ctr_flag) { g_ctr--; } else { g_ctr++; } if (g_ctr >= 15) { g_ctr_flag = 1; } else if (g_ctr <= 0) { g_ctr_flag = 0; } csi_pwm_out_config(&r, 2 / 2, 30, g_ctr, PWM_POLARITY_LOW); csi_pwm_out_start(&r, 2 / 2); ``` # The red and blue warning lights periodically control the flashing of the red and blue lights. This is relatively simple. ``` g_ctr++; if (g_ctr > 1) { g_ctr = 0; } csi_pwm_out_stop(&r, 2 / 2); if (g_ctr == 0) { csi_pwm_out_start(&r, 7 / 2); csi_pwm_out_stop(&r, 4 / 2); } else { csi_pwm_out_stop(&r, 7 / 2); csi_pwm_out_start(&r, 4 / 2); } ```

led2015

I still like the feeling of programming