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/******************************************************************************
*
* @brief providing APIs for configuring KBI.
*
*******************************************************************************
*
* provide APIs for configuring KBI
******************************************************************************/
#include "common.h"
#include "kbi.h"
/******************************************************************************
* External objects
******************************************************************************/
/******************************************************************************
* Global variables
******************************************************************************/
KBI_CallbackType KBI_Callback[KBI_MAX_NO] = {(KBI_CallbackType)NULL};
/******************************************************************************
* Constants and macros
******************************************************************************/
/******************************************************************************
* Local types
******************************************************************************/
/******************************************************************************
* Local function prototypes
******************************************************************************/
/******************************************************************************
* Local variables
******************************************************************************/
/******************************************************************************
* Local functions
******************************************************************************/
/******************************************************************************
* KBI api list
*
*//*! @addtogroup kbi_api_list
* @{
*******************************************************************************/
/******************************************************************************
* Global functions
******************************************************************************/
/*****************************************************************************//*!
*
* @brief initialize KBI module.
*
* @param[in] pKBI pointer to KBI module.
* @param[in] pConfig pointer to KBI configuration structure.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see KBI_DeInit.
*
*****************************************************************************/
void KBI_Init(KBI_Type *pKBI, KBI_ConfigType *pConfig)
{
#if defined(CPU_NV32)
uint16_t i;
uint8_t sc = 0;
uint8_t u8Port;
uint8_t u8PinPos;
uint16_t u16PinMapping[KBI_MAX_NO][8] =
{
{
0, 1, 2, 3, 8, 9, 10, 11 /* KBI0 pins position in GPIOA register */
},
{
24, 25, 26, 27, 28, 29, 30, 31 /* KBI1 pins position in GPIOA register */
}
};
#elif defined(CPU_NV32M3)
uint16_t i;
uint8_t sc = 0;
uint8_t u8Port;
uint8_t u8PinPos;
uint16_t u16PinMapping[KBI_MAX_NO][8] =
{
{
0, 1, 2, 3, 8, 9, 10, 11 /* KBI0 pins position in GPIOA register */
},
{
20, 21, 16, 17, 18, 19, 12, 13 /* KBI1 pins position in GPIOA register */
}
};
#elif defined(CPU_NV32M4)
uint32_t i;
uint32_t sc = 0;
uint32_t u8Port;
uint32_t u8PinPos;
uint32_t u16PinMapping[KBI_MAX_NO][KBI_MAX_PINS_PER_PORT] =
{
{/* KBI0P0~KBI0P31 pins position in GPIOA register */
0, 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
},
{/* KBI1P0~KBI1P31 pins position in GPIOB register */
0, 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
}
};
#endif
if(KBI0 == pKBI)
{
SIM->SCGC |= SIM_SCGC_KBI0_MASK; /* enable clock to KBI0 */\
u8Port = 0;
}
else if (KBI1 == pKBI)
{
SIM->SCGC |= SIM_SCGC_KBI1_MASK; /* enable clock to KBI1 */
u8Port = 1;
}
/* mask keyboard interrupts first */
sc = pConfig->sBits.bMode;
pKBI->SC = sc;
/* configure KBI pin polarity and others */
for (i = 0; i < KBI_MAX_PINS_PER_PORT; i++)
{
if(pConfig->sPin[i].bEn)
{
pKBI->PE |= (1<<i); /* enable this KBI pin */
pKBI->ES = (pKBI->ES & ~(1<<i)) | (pConfig->sPin[i].bEdge << i);
u8PinPos = u16PinMapping[u8Port][i];
ASSERT(!(u8PinPos & 0x80));
#if defined(CPU_NV32)|| defined(CPU_NV32M3)
FGPIOA->PIDR &= ~(1<<u8PinPos); /* enable GPIO input */
FGPIOA->PDDR &= ~(1<<u8PinPos); /* configure pin as input */
PORT->PUEL |= (1<<u8PinPos); /* enable pullup for the pin */
#elif defined(CPU_NV32M4)
if (u8Port == 0) /* KBI0 */
{
FGPIOA->PIDR &= ~(1<<u8PinPos); /* enable GPIO input */
FGPIOA->PDDR &= ~(1<<u8PinPos); /* configure pin as input */
PORT->PUE0 |= (1<<u8PinPos); /*enable pullup for the pin */
}
else if (u8Port == 1) /* KBI1 */
{
FGPIOB->PIDR &= ~(1<<u8PinPos); /* enable GPIO input */
FGPIOB->PDDR &= ~(1<<u8PinPos); /* configure pin as input */
PORT->PUE1 |= (1<<u8PinPos); /*enable pullup for the pin */
}
#endif
}
}
#if defined(CPU_NV32M4)
/*Reset KBI_SP register*/
sc = pConfig->sBits.bRstKbsp<<KBI_SC_RSTKBSP_SHIFT;
pKBI->SC |= sc;
/*Real KBI_SP register enable*/
sc = pConfig->sBits.bKbspEn<<KBI_SC_KBSPEN_SHIFT;
pKBI->SC |= sc;
#endif
/* write to KBACK to clear any false interrupts */
pKBI->SC = sc;
/* enable interrupt if needed */
if(pConfig->sBits.bIntEn)
{
pKBI->SC |= KBI_SC_KBIE_MASK;
if(KBI0 == pKBI)
{
NVIC_EnableIRQ(KBI0_IRQn);
}
else
{
NVIC_EnableIRQ(KBI1_IRQn);
}
}
}
/*****************************************************************************//*!
*
* @brief set up KBI callback routine.
*
* @param[in] pKBI pointer to KBI module.
* @param[in] pfnCallback pointer to callback routine.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void KBI_SetCallback(KBI_Type *pKBI, KBI_CallbackType pfnCallback)
{
if(KBI0 == pKBI)
{
KBI_Callback[0] = pfnCallback;
}
else
{
KBI_Callback[1] = pfnCallback;
}
}
/*****************************************************************************//*!
*
* @brief deinit the kbi module.
*
* @param[in] pKBI pointer to KBI module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see KBI_Init.
*
*****************************************************************************/
void KBI_DeInit(KBI_Type *pKBI)
{
if(KBI0 == pKBI)
{
NVIC_DisableIRQ(KBI0_IRQn);
}
else
{
NVIC_DisableIRQ(KBI1_IRQn);
}
pKBI->PE = 0;
pKBI->SC = 0;
pKBI->ES = 0;
if(KBI0 == pKBI)
{
SIM->SCGC &= ~SIM_SCGC_KBI0_MASK; /* disable clock to KBI0 */
}
else
{
SIM->SCGC &= ~SIM_SCGC_KBI1_MASK; /* disable clock to KBI1 */
}
}
/*! @} End of acmp_api_list */
/*****************************************************************************//*!
*
* @brief button group 0 (KBI0) interrupt service routine.
*
* @param none.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void KBI0_Isr(void)
{
KBI0->SC |= KBI_SC_KBACK_MASK; /* clear interrupt flag */
if(KBI_Callback[0])
{
KBI_Callback[0]();
}
}
/*****************************************************************************//*!
*
* @brief button group 0 (KBI0) interrupt service routine.
*
* @param none.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void KBI1_Isr(void)
{
KBI1->SC |= KBI_SC_KBACK_MASK; /* clear interrupt flag */
if(KBI_Callback[1])
{
KBI_Callback[1]();
}
}
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