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/**
*********************************************************************************************************
* Copyright(c) 2018, Realtek Semiconductor Corporation. All rights reserved.
*********************************************************************************************************
* @file io_keyscan.c
* @brief This file provides demo code of keyscan manual mode.
* @details
* @author yuan
* @date 2018-12-07
* @version v1.0
*********************************************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "io_keyscan.h"
#include "app_task.h"
/* Globals ------------------------------------------------------------------*/
/* Timer handle */
void *KeyScan_Timer_Handle = NULL;
KeyScan_Data_TypeDef Current_Key_Data;
bool Key_Pressed_Flag = false;
/**
* @brief Initialize keyscan global data.
* @param No parameter.
* @return void
*/
void global_data_keyscan_init(void)
{
/* Data struct init */
memset(&Current_Key_Data, 0, sizeof(KeyScan_Data_TypeDef));
// memset(&Pre_Key_Data, 0, sizeof(KeyScan_Data_TypeDef));
}
/**
* @brief Initialization of pinmux settings and pad settings.
* @param No parameter.
* @return Void
*/
void board_keyboard_init(void)
{
/* Keypad pad config */
Pad_Config(KEYBOARD_ROW_0, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_DISABLE,
PAD_OUT_LOW);
Pad_Config(KEYBOARD_ROW_1, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_UP, PAD_OUT_DISABLE,
PAD_OUT_LOW);
Pad_Config(KEYBOARD_COLUMN_0, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_NONE, PAD_OUT_ENABLE,
PAD_OUT_LOW);
Pad_Config(KEYBOARD_COLUMN_1, PAD_PINMUX_MODE, PAD_IS_PWRON, PAD_PULL_NONE, PAD_OUT_ENABLE,
PAD_OUT_LOW);
/* keypad pinmux config */
Pinmux_Config(KEYBOARD_ROW_0, KEY_ROW_0);
Pinmux_Config(KEYBOARD_ROW_1, KEY_ROW_1);
Pinmux_Config(KEYBOARD_COLUMN_0, KEY_COL_0);
Pinmux_Config(KEYBOARD_COLUMN_1, KEY_COL_1);
}
/**
* @brief Initialize keyboard peripheral.
* @param No parameter.
* @return Void
*/
void driver_keyboard_init(uint32_t vDebounce_En)
{
/* Turn on keyscan clock */
RCC_PeriphClockCmd(APBPeriph_KEYSCAN, APBPeriph_KEYSCAN_CLOCK, ENABLE);
KEYSCAN_InitTypeDef KEYSCAN_InitStruct;
KeyScan_StructInit(&KEYSCAN_InitStruct);
KEYSCAN_InitStruct.rowSize = KEYBOARD_ROW_SIZE;
KEYSCAN_InitStruct.colSize = KEYBOARD_COLUMN_SIZE;
KEYSCAN_InitStruct.scanmode = KeyScan_Manual_Scan_Mode;
KEYSCAN_InitStruct.debounceEn = vDebounce_En;
KeyScan_Init(KEYSCAN, &KEYSCAN_InitStruct);
KeyScan_INTConfig(KEYSCAN, KEYSCAN_INT_SCAN_END, ENABLE);
KeyScan_ClearINTPendingBit(KEYSCAN, KEYSCAN_INT_SCAN_END);
KeyScan_INTMask(KEYSCAN, KEYSCAN_INT_SCAN_END, DISABLE); /* Unmask keyscan interrupt */
KeyScan_Cmd(KEYSCAN, ENABLE);
/* Keyscan IRQ */
NVIC_InitTypeDef NVIC_InitStruct;
NVIC_InitStruct.NVIC_IRQChannel = KeyScan_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd = (FunctionalState)ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPriority = 3;
NVIC_Init(&NVIC_InitStruct);
}
/**
* @brief Calculate adc sample voltage.
* @param No parameter.
* @return void
*/
static void io_keyscan_handle_keys(T_IO_MSG *io_keyscan_msg)
{
uint16_t subtype = io_keyscan_msg->subtype;
if (subtype == IO_MSG_KEYSCAN_RX_PKT)
{
KeyScan_Data_TypeDef *p_key_data = (KeyScan_Data_TypeDef *)io_keyscan_msg->u.buf;
/* Single key press */
if (p_key_data->length == 1)
{
APP_PRINT_INFO2("[io_keyscan] io_keyscan_handle_keys: Single key press. key: (%d, %d)",
p_key_data->key[0].row, p_key_data->key[0].column);
}
/* two keys press */
if (p_key_data->length == 2)
{
APP_PRINT_INFO4("[io_keyscan] io_keyscan_handle_keys: Two key press. key0: (%d, %d), key1: (%d, %d)",
p_key_data->key[0].row, p_key_data->key[0].column, p_key_data->key[1].row,
p_key_data->key[1].column);
}
}
else if (subtype == IO_MSG_KEYSCAN_ALLKEYRELEASE)
{
APP_PRINT_INFO0("[io_keyscan] io_keyscan_handle_keys: All keys release.");
}
else
{
APP_PRINT_INFO0("[io_keyscan] io_keyscan_handle_keys: Wrong key event!");
}
}
/**
* @brief Handle keyscan data function.
* @param No parameter.
* @return void
*/
void io_handle_keyscan_msg(T_IO_MSG *io_keyscan_msg)
{
io_keyscan_handle_keys(io_keyscan_msg);
}
void timer_keyscan_callback(void *p_xTimer)
{
if (true == Key_Pressed_Flag)
{
// APP_PRINT_INFO0("[io_keyscan] timer_keyscan_callback: start release timer");
Key_Pressed_Flag = false;
driver_keyboard_init(KeyScan_Debounce_Disable);
/* Start timer to check key status */
os_timer_restart(&p_xTimer, KEYSCAN_SW_RELEASE_TIMEOUT);
}
else
{
/* Keyscan release event detected */
// APP_PRINT_INFO0("[io_keyscan] timer_keyscan_callback: keyscan release event detected ");
T_IO_MSG int_keyscan_msg;
int_keyscan_msg.type = IO_MSG_TYPE_KEYSCAN;
int_keyscan_msg.subtype = IO_MSG_KEYSCAN_ALLKEYRELEASE;
if (false == app_send_msg_to_apptask(&int_keyscan_msg))
{
APP_PRINT_ERROR0("[io_keyscan] timer_keyscan_callback: Send IO_MSG_KEYSCAN_ALLKEYRELEASE failed!");
}
global_data_keyscan_init();
driver_keyboard_init(KeyScan_Debounce_Enable);
}
}
void timer_keyscan_init(void)
{
APP_PRINT_INFO0("[io_keyscan] timer_keyscan_init: keyscan timer init");
if (false == os_timer_create(&KeyScan_Timer_Handle, "keyscan_timer", 1, \
KEYSCAN_SW_INTERVAL, false, timer_keyscan_callback))
{
APP_PRINT_ERROR0("[io_keyscan] timer_keyscan_init: timer creat failed!");
}
}
/**
* @brief Keyscan interrupt handler function.
* @param No parameter.
* @return void
*/
void Keyscan_Handler(void)
{
uint32_t fifo_length;
T_IO_MSG int_keyscan_msg;
if (KeyScan_GetFlagState(KEYSCAN, KEYSCAN_INT_FLAG_SCAN_END) == SET)
{
/* Read current keyscan interrupt status and mask interrupt */
KeyScan_INTMask(KEYSCAN, KEYSCAN_INT_SCAN_END, ENABLE);
memset(&Current_Key_Data, 0, sizeof(KeyScan_Data_TypeDef));
/* KeyScan fifo not empty */
if (KeyScan_GetFlagState(KEYSCAN, KEYSCAN_FLAG_EMPTY) != SET)
{
fifo_length = (uint32_t)KeyScan_GetFifoDataNum(KEYSCAN);
KeyScan_Read(KEYSCAN, (uint16_t *)&Current_Key_Data.key[0], fifo_length);
Current_Key_Data.length = fifo_length;
Key_Pressed_Flag = true;
/* Start sw timer to check press status */
if (!os_timer_restart(&KeyScan_Timer_Handle, KEYSCAN_SW_INTERVAL))
{
APP_PRINT_ERROR0("[io_keyscan] Keyscan_Handler: Restart keyscan_timer failed!");
/* Set flag to default status and reinit keyscan module with debounce enabled */
global_data_keyscan_init();
driver_keyboard_init(KeyScan_Debounce_Enable);
return;
}
/* Send event to app task */
int_keyscan_msg.type = IO_MSG_TYPE_KEYSCAN;
int_keyscan_msg.subtype = IO_MSG_KEYSCAN_RX_PKT;
int_keyscan_msg.u.buf = (void *)&Current_Key_Data;
if (false == app_send_msg_to_apptask(&int_keyscan_msg))
{
APP_PRINT_ERROR0("[io_keyscan] Keyscan_Handler: Send IO_MSG_KEYSCAN_RX_PKT failed!");
//Add user code here!
return;
}
}
KeyScan_ClearINTPendingBit(KEYSCAN, KEYSCAN_INT_SCAN_END);
KeyScan_INTMask(KEYSCAN, KEYSCAN_INT_SCAN_END, DISABLE);
}
}
/******************* (C) COPYRIGHT 2018 Realtek Semiconductor Corporation *****END OF FILE****/
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