Revision bbeeceaf source/TLC5947/v1/alld_TLC5947_v1.c

View differences:

source/TLC5947/v1/alld_TLC5947_v1.c
62 62 
{
63 63 
  apalDbgAssert(tlc5947 != NULL);
64 64 

  		




  65
  
  
    
  // set the output value of the GPIO pin depending on the activation property


  		




  66
  
  
    
  return apalControlGpioSet(tlc5947->blank_gpio, blank == TLC5947_LLD_BLANK_ENABLE ? APAL_GPIO_ON : APAL_GPIO_OFF);


  		




  
  65
  
    
  // BLANK signal is optional


  		




  
  66
  
    
  if (tlc5947->blank_gpio == NULL) {


  		




  
  67
  
    
    return APAL_STATUS_WARNING;


  		




  
  68
  
    
  } else {


  		




  
  69
  
    
    // set the output value of the GPIO pin depending on the activation property


  		




  
  70
  
    
    return apalControlGpioSet(tlc5947->blank_gpio, blank == TLC5947_LLD_BLANK_ENABLE ? APAL_GPIO_ON : APAL_GPIO_OFF);


  		




  
  71
  
    
  }


  		




  67
  72
  
    
}


  		




  68
  73
  
    

  		




  69
  74
  
    
/**


  		




  ......




  77
  82
  
    
  apalDbgAssert(tlc5947 != NULL);


  		




  78
  83
  
    
  apalDbgAssert(blank != NULL);


  		




  79
  84
  
    

  		




  80
  
  
    
  apalControlGpioState_t gpio_state;


  		




  81
  
  
    
  apalExitStatus_t status = apalControlGpioGet(tlc5947->blank_gpio, &gpio_state);


  		




  82
  
  
    
  *blank = gpio_state == APAL_GPIO_ON ? TLC5947_LLD_BLANK_ENABLE : TLC5947_LLD_BLANK_DISABLE;


  		




  83
  
  
    
  return status;


  		




  
  85
  
    
  // BLANK signal is optional


  		




  
  86
  
    
  if (tlc5947->blank_gpio == NULL) {


  		




  
  87
  
    
    return APAL_STATUS_WARNING;


  		




  
  88
  
    
  } else {


  		




  
  89
  
    
    apalControlGpioState_t gpio_state;


  		




  
  90
  
    
    apalExitStatus_t status = apalControlGpioGet(tlc5947->blank_gpio, &gpio_state);


  		




  
  91
  
    
    *blank = gpio_state == APAL_GPIO_ON ? TLC5947_LLD_BLANK_ENABLE : TLC5947_LLD_BLANK_DISABLE;


  		




  
  92
  
    
    return status;


  		




  
  93
  
    
  }


  		




  84
  94
  
    
}


  		




  85
  95
  
    

  		




  86
  96
  
    
/**


  		




  ......




  93
  103
  
    
{


  		




  94
  104
  
    
  apalDbgAssert(tlc5947 != NULL);


  		




  95
  105
  
    

  		




  96
  
  
    
  apalExitStatus_t status = apalControlGpioSet(tlc5947->xlat_gpio, APAL_GPIO_ON);


  		




  97
  
  
    
  // The XLAT signal has to be active for at least 30 ns.


  		




  98
  
  
    
  // It is assumed that that these function calls satisfy this requirement even without explicit delay.


  		




  99
  
  
    
  if (apalControlGpioSet(tlc5947->xlat_gpio, APAL_GPIO_OFF) == APAL_STATUS_OK && status == APAL_STATUS_OK) {


  		




  100
  
  
    
    return APAL_STATUS_OK;


  		




  
  106
  
    
  // XLAT signal GPIO is optional


  		




  
  107
  
    
  if (tlc5947->xlat_gpio == NULL) {


  		




  
  108
  
    
    return APAL_STATUS_WARNING;


  		




  101
  109
  
    
  } else {


  		




  102
  
  
    
    return APAL_STATUS_ERROR;


  		




  
  110
  
    
    apalExitStatus_t status = apalGpioWrite(tlc5947->xlat_gpio->gpio, (tlc5947->xlat_gpio->meta.edge == APAL_GPIO_EDGE_RISING) ? APAL_GPIO_LOW : APAL_GPIO_HIGH);


  		




  
  111
  
    
    // The XLAT signal has to be active for at least 30 ns.


  		




  
  112
  
    
    // It is assumed that that these function calls satisfy this requirement even without explicit delay.


  		




  
  113
  
    
    status |= apalGpioWrite(tlc5947->xlat_gpio->gpio, (tlc5947->xlat_gpio->meta.edge == APAL_GPIO_EDGE_RISING) ? APAL_GPIO_HIGH : APAL_GPIO_LOW);


  		




  
  114
  
    
    return status;


  		




  103
  115
  
    
  }


  		




  104
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}


  		




  105
  117
  
    

  		












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