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/**************************************************************************//**
* @file kpi.c
* @brief KPI driver source file
*
* SPDX-License-Identifier: Apache-2.0
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include <stdio.h>
#include "NuMicro.h"
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup KPI_Driver KPI Driver
@{
*/
/** @addtogroup KPI_EXPORTED_FUNCTIONS KPI Exported Functions
@{
*/
/// @cond HIDDEN_SYMBOLS
#define KPICONF_VALUE 0x00288059
/// @endcond HIDDEN_SYMBOLS
/**
* @brief Open KPI function.
*
* @return TRUE: Success \n
* FALSE: KPI function already open
*
*/
void KPI_Open(KPI_T *kpi, uint32_t u32Row, uint32_t u32Col)
{
uint32_t u32Reg;
kpi->KPICONF = 0x0;
kpi->KPI3KCONF = 0x0;
kpi->KPIRSTC = 0x0;
if (u32Row < 2)
u32Row = 1;
else if (u32Row > 6)
u32Row = 6;
else
u32Row = u32Row - 1;
if (u32Col < 2)
u32Col = 1;
else if (u32Col > 8)
u32Col = 8;
else
u32Col = u32Col - 1;
u32Reg = (KPICONF_VALUE | (u32Row << 28) | (u32Col << 24));
kpi->KPICONF = u32Reg;
}
/**
* @brief Close KPI function.
*
* @return Successful: Success \n
* kpiNotOpen: KPI function not open
*/
void KPI_Close(KPI_T *kpi)
{
kpi->KPICONF &= ~KPI_KPICONF_ENKP_Msk;
}
/**
* @brief Config KPI scan key timing.
*
* @param[in] u32PreScale: Row Scan Cycle Pre-scale Value. The divided number is from 1 to 256
* @param[in] u32Debounce: De-bounce Sampling Cycle. The value is from 3 to 13
* @param[in] u32ScanDelay: Setting delay cycle when row change:
* \ref KPI_ROW_SCAN_DELAY4CLK
* \ref KPI_ROW_SCAN_DELAY8CLK
* \ref KPI_ROW_SCAN_DELAY16CLK
* \ref KPI_ROW_SCAN_DELAY32CLK
*
* @return None
*
*/
void KPI_ConfigKeyScanTiming(KPI_T *kpi, uint32_t u32PreScale, uint32_t u32Debounce, uint32_t u32ScanDelay)
{
if (u32Debounce < 3) u32Debounce = 3;
if (u32Debounce > 13) u32Debounce = 13;
kpi->KPICONF &= ~(KPI_KPICONF_PRESCALE_Msk | KPI_KPICONF_DBCLKSEL_Msk | KPI_KPICONF_SCANROWD_Msk);
kpi->KPICONF |= (u32PreScale << KPI_KPICONF_PRESCALE_Pos) | (u32Debounce << KPI_KPICONF_DBCLKSEL_Pos) |
(u32ScanDelay << KPI_KPICONF_SCANROWD_Pos);
}
/**
* @brief Read KPI Release key Status.
*
* @param[in] u32Key1: \ref KPI_KEY00 ~ \ref KPI_KEY58
* @param[in] u32Key2: \ref KPI_KEY00 ~ \ref KPI_KEY58
* @param[in] u32Key3: \ref KPI_KEY00 ~ \ref KPI_KEY58
* @param[in] u32RSTC: Reset Period Count. The value is from 0 ~ 255.
*
* @return None
*/
void KPI_Set3KeyReset(KPI_T *kpi, uint32_t u32Key1, uint32_t u32Key2, uint32_t u32Key3, uint32_t u32RstCnt)
{
kpi->KPI3KCONF &= ~(KPI_KPI3KCONF_K30C_Msk | KPI_KPI3KCONF_K30R_Msk |
KPI_KPI3KCONF_K31C_Msk | KPI_KPI3KCONF_K31R_Msk |
KPI_KPI3KCONF_K32C_Msk | KPI_KPI3KCONF_K32R_Msk);
// Set Key
kpi->KPI3KCONF |= ((u32Key1 / 8) << 3) | (u32Key1 % 8);
kpi->KPI3KCONF |= ((((u32Key1 / 8) << 3) | (u32Key1 % 8)) << 8);
kpi->KPI3KCONF |= ((((u32Key1 / 8) << 3) | (u32Key1 % 16)) << 8);
// Set Reset Period Count
kpi->KPIRSTC = u32RstCnt;
// Enable 3Key Reset
kpi->KPI3KCONF |= KPI_KPI3KCONF_EN3KYRST_Msk;
}
/*@}*/ /* end of group KPI_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group KPI_Driver */
/*@}*/ /* end of group Standard_Driver */
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