PCA9865/main.c at master · bitmarker/PCA9865 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
#include "general.h"
#include "chip.h"
#include "i2c.h"
#include "pca9685.h"

/* System oscillator rate and clock rate on the CLKIN pin */
const uint32_t OscRateIn = 12000000;
const uint32_t ExtRateIn = 0;


volatile float dc = 1;
float add = 0.5;

void SysTick_Handler()
{
  if(dc >= 100 || dc <= 0)
  {
    add = add * -1;
  }

  PCA9685_SetPWM(0, 0, dc / 100.0);
  PCA9685_SetPWM(1, 0, 1 - dc / 100.0);
  PCA9685_SetPWM(2, 0, 1 - 2 * dc / 100.0);

  dc += add;
}


int main()
{
  SystemCoreClockUpdate();


  Chip_GPIO_Init(LPC_GPIO);
  Chip_GPIO_SetPinDIROutput(LPC_GPIO, 1, 10);
  Chip_GPIO_SetPinDIROutput(LPC_GPIO, 1, 11);

  SysTick_Config(SystemCoreClock / 100);

  I2C_Init();

  PCA9685_SetAddress(0x40);

  if(PCA9685_Init() == NO_ERROR)
  {


    if(PCA9685_SetPWM(0, 0, 0.5) == NO_ERROR)
    {
      Chip_GPIO_SetPinState(LPC_GPIO, 1, 11, false);
    }
    else
    {
      Chip_GPIO_SetPinState(LPC_GPIO, 1, 10, false);
    }
  }
  else
  {
    Chip_GPIO_SetPinState(LPC_GPIO, 1, 10, false);
  }


  while(1)
  {
    PCA9685_Idle();
  }
}