lh7a400_gpio_driver.c

sharp flash blob 的烧写代码

*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_debounce_enable(UNS_8 port_f_bit)
{
   GPIO->gpiodb |= _BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_debounce_disable
*
* Purpose:
*  disable debounce for a port F interrupt bit
*
* Processing:
*  Clear the appropriate bit in the gpiodb register
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_debounce_disable(UNS_8 port_f_bit)
{
   GPIO->gpiodb &= ~_BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_clear
*
* Purpose:
*
* Processing:
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_clear(UNS_8 port_f_bit)
{
   GPIO->gpiofeoi = _BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_pending
*
* Purpose:
*  return 1 if there is a pending interrupt on the specified 
*  port F bit.
*
* Processing:
*  AND the intstatus register with 1 << port_f_bit and return
*  the result.
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns: 
*  0 if there is not a raw interrupt pending on the specified port bit.
*  non-0 if there is a raw interrupt pending on the specified port bit.
*
* Notes:
*
**********************************************************************/
INT_32 gpio_interrupt_pending(UNS_8 port_f_bit)
{
   return GPIO->intstatus & _BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_raw_interrupt_pending
*
* Purpose:
*  return 1 if there is a pending raw interrupt on the specified 
*  port F bit.
*
* Processing:
*  AND the rawintstatus register with 1 << port_f_bit and return
*  the result.
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns:
*  0 if there is not a raw interrupt pending on the specified port bit.
*  non-0 if there is a raw interrupt pending on the specified port bit.
*
* Notes:
*  This function ignores the interrupt mask that is set up by
*  the port_f_bit_is_interrupt()/port_f_bit_is_gpio() functions
*
**********************************************************************/
INT_32 gpio_raw_interrupt_pending(UNS_8 port_f_bit)
{
   return GPIO->rawintstatus & _BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_edge_triggered
*
* Purpose:
*  set the port F interrupt bit to edge triggered
*
* Processing:
*  Set the specified bit in the inttype1 register
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_edge_triggered(UNS_8 port_f_bit)
{
   GPIO->inttype1 |= _BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_level_triggered
*
* Purpose:
*  set the port F interrupt bit to level triggered
*
* Processing:
*  Clear the specified bit in the inttype1 register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_level_triggered(UNS_8 port_f_bit)
{
   GPIO->inttype1 &= ~_BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_active_high
*
* Purpose:
*  Make the port F interrupt bit active high
*
* Processing:
*  Set the specified bit in the inttype2 register
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_active_high(UNS_8 port_f_bit)
{
   GPIO->inttype2 |= _BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_interrupt_active_low
*
* Purpose:
*  Make the port F interrupt bit active low
*
* Processing:
*  Clear the specified bit in the inttype2 register
*
* Parameters:
*  port_f_bit: The bit number of the port F bit. For example, for
*              PORTF2, use port_f_bit == 2.
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_interrupt_active_low(UNS_8 port_f_bit)
{
   GPIO->inttype2 &= ~_BIT(port_f_bit);
}

/**********************************************************************
*
* Function: gpio_keyscan_set
*
* Purpose:
*  set the 4-bit keyscan value
*
* Processing:
*  set the keyscan register to value
*
* Parameters:
*  value: the 4-bit value to set.
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*  If value is greater than 15 (0xf), then only least significant
*  four bits of value will be used.
*
**********************************************************************/
void gpio_keyscan_set(UNS_8 value)
{
   GPIO->kscan = value;
}

/**********************************************************************
*
* Function: gpio_keyscan_get
*
* Purpose:
*  get the 4-bit keyscan value
*
* Processing:
*  read the keyscan register and return it.
*
* Parameters: None
*
* Outputs: None
*
* Returns:
*  the current contents of the key scan register.
*
* Notes:
*
**********************************************************************/
UNS_8 gpio_keyscan_get(void)
{
   return (UNS_8)GPIO->kscan;
}

/**********************************************************************
*
* Function: gpio_port_e_is_gpio
*
* Purpose:
*  configure the lower 4 bits of port E as gpio
*
* Processing:
*  Set up pinmux register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_port_e_is_gpio(void)
{
   GPIO->pinmux &= ~GPIO_PINMUX_PEOCON;
}

/**********************************************************************
*
* Function: gpio_port_e_is_lcd
*
* Purpose:
*  configure the lower 4 bits of port E as lcd data[7:4]
*
* Processing:
*  Set up pinmux register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_port_e_is_lcd(void)
{
   GPIO->pinmux |= GPIO_PINMUX_PEOCON;
}

/**********************************************************************
*
* Function: gpio_port_d_is_gpio
*
* Purpose:
*  configure all of port D as gpio
*
* Processing:
*  Set up pinmux register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_port_d_is_gpio(void)
{
   GPIO->pinmux &= ~GPIO_PINMUX_PDOCON;
}

/**********************************************************************
*
* Function: gpio_port_d_is_lcd
*
* Purpose:
*  configure all of port D as LCD data[15:8]
*
* Processing:
*  Set up pinmux register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_port_d_is_lcd(void)
{
   GPIO->pinmux |= GPIO_PINMUX_PDOCON;
}

/**********************************************************************
*
* Function: gpio_port_b_has_gpio
*
* Purpose:
*  configure port B[5:1] as gpio
*
* Processing:
*  Set up pinmux register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_port_b_has_gpio(void)
{
   GPIO->pinmux &= ~GPIO_PINMUX_UART3ON;
}

/**********************************************************************
*
* Function: gpio_port_b_has_uart3
*
* Purpose:
*  configure port B[5:1] as UART3 pins
*
* Processing:
*  Set up pinmux register
*
* Parameters: None
*
* Outputs: None
*
* Returns: Nothing
*
* Notes:
*
**********************************************************************/
void gpio_port_b_has_uart3(void)
{
   GPIO->pinmux |= GPIO_PINMUX_UART3ON;
}